Import Gnulib floorf and base64 and removed our old base64 library.

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1926 f882894a-f735-0410-b71e-b25c423dba1c

20 files changed, 3288 insertions, 3 deletions

diff --git a/gl/Makefile.am b/gl/Makefile.am
index 92c675ea..1eefee9d 100644
--- a/gl/Makefile.am
+++ b/gl/Makefile.am
@@ -9,7 +9,7 @@
 # the same distribution terms as the rest of that program.
 #
 # Generated by gnulib-tool.
-# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=gl --m4-base=gl/m4 --doc-base=doc --aux-dir=build-aux --no-libtool --macro-prefix=gl dirname fsusage getaddrinfo gethostname getloadavg getopt gettext mountlist regex vasprintf vsnprintf
+# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=gl --m4-base=gl/m4 --doc-base=doc --aux-dir=build-aux --no-libtool --macro-prefix=gl base64 dirname floorf fsusage getaddrinfo gethostname getloadavg getopt gettext mountlist regex vasprintf vsnprintf
 
 AUTOMAKE_OPTIONS = 1.5 gnits
 
@@ -89,6 +89,12 @@ MOSTLYCLEANDIRS += arpa
 
 ## end   gnulib module arpa_inet
 
+## begin gnulib module base64
+
+libgnu_a_SOURCES += base64.h base64.c
+
+## end   gnulib module base64
+
 ## begin gnulib module c-strtod
 
 
@@ -219,6 +225,15 @@ EXTRA_DIST += float.in.h
 
 ## end   gnulib module float
 
+## begin gnulib module floorf
+
+
+EXTRA_DIST += floor.c floorf.c
+
+EXTRA_libgnu_a_SOURCES += floor.c floorf.c
+
+## end   gnulib module floorf
+
 ## begin gnulib module fsusage
 
 
@@ -415,6 +430,70 @@ EXTRA_libgnu_a_SOURCES += malloc.c
 
 ## end   gnulib module malloc-posix
 
+## begin gnulib module math
+
+BUILT_SOURCES += math.h
+
+# We need the following in order to create <math.h> when the system
+# doesn't have one that works with the given compiler.
+math.h: math.in.h
+	rm -f $@-t $@
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
+	  sed -e 's/@''INCLUDE_NEXT''@/$(INCLUDE_NEXT)/g' \
+	      -e 's|@''NEXT_MATH_H''@|$(NEXT_MATH_H)|g' \
+	      -e 's|@''GNULIB_CEILF''@|$(GNULIB_CEILF)|g' \
+	      -e 's|@''GNULIB_CEILL''@|$(GNULIB_CEILL)|g' \
+	      -e 's|@''GNULIB_FLOORF''@|$(GNULIB_FLOORF)|g' \
+	      -e 's|@''GNULIB_FLOORL''@|$(GNULIB_FLOORL)|g' \
+	      -e 's|@''GNULIB_FREXP''@|$(GNULIB_FREXP)|g' \
+	      -e 's|@''GNULIB_FREXPL''@|$(GNULIB_FREXPL)|g' \
+	      -e 's|@''GNULIB_ISFINITE''@|$(GNULIB_ISFINITE)|g' \
+	      -e 's|@''GNULIB_LDEXPL''@|$(GNULIB_LDEXPL)|g' \
+	      -e 's|@''GNULIB_MATHL''@|$(GNULIB_MATHL)|g' \
+	      -e 's|@''GNULIB_ROUND''@|$(GNULIB_ROUND)|g' \
+	      -e 's|@''GNULIB_ROUNDF''@|$(GNULIB_ROUNDF)|g' \
+	      -e 's|@''GNULIB_ROUNDL''@|$(GNULIB_ROUNDL)|g' \
+	      -e 's|@''GNULIB_SIGNBIT''@|$(GNULIB_SIGNBIT)|g' \
+	      -e 's|@''GNULIB_TRUNC''@|$(GNULIB_TRUNC)|g' \
+	      -e 's|@''GNULIB_TRUNCF''@|$(GNULIB_TRUNCF)|g' \
+	      -e 's|@''GNULIB_TRUNCL''@|$(GNULIB_TRUNCL)|g' \
+	      -e 's|@''HAVE_DECL_ACOSL''@|$(HAVE_DECL_ACOSL)|g' \
+	      -e 's|@''HAVE_DECL_ASINL''@|$(HAVE_DECL_ASINL)|g' \
+	      -e 's|@''HAVE_DECL_ATANL''@|$(HAVE_DECL_ATANL)|g' \
+	      -e 's|@''HAVE_DECL_COSL''@|$(HAVE_DECL_COSL)|g' \
+	      -e 's|@''HAVE_DECL_EXPL''@|$(HAVE_DECL_EXPL)|g' \
+	      -e 's|@''HAVE_DECL_FREXPL''@|$(HAVE_DECL_FREXPL)|g' \
+	      -e 's|@''HAVE_DECL_LDEXPL''@|$(HAVE_DECL_LDEXPL)|g' \
+	      -e 's|@''HAVE_DECL_LOGL''@|$(HAVE_DECL_LOGL)|g' \
+	      -e 's|@''HAVE_DECL_SINL''@|$(HAVE_DECL_SINL)|g' \
+	      -e 's|@''HAVE_DECL_SQRTL''@|$(HAVE_DECL_SQRTL)|g' \
+	      -e 's|@''HAVE_DECL_TANL''@|$(HAVE_DECL_TANL)|g' \
+	      -e 's|@''HAVE_DECL_TRUNC''@|$(HAVE_DECL_TRUNC)|g' \
+	      -e 's|@''HAVE_DECL_TRUNCF''@|$(HAVE_DECL_TRUNCF)|g' \
+	      -e 's|@''HAVE_DECL_TRUNCL''@|$(HAVE_DECL_TRUNCL)|g' \
+	      -e 's|@''REPLACE_CEILF''@|$(REPLACE_CEILF)|g' \
+	      -e 's|@''REPLACE_CEILL''@|$(REPLACE_CEILL)|g' \
+	      -e 's|@''REPLACE_FLOORF''@|$(REPLACE_FLOORF)|g' \
+	      -e 's|@''REPLACE_FLOORL''@|$(REPLACE_FLOORL)|g' \
+	      -e 's|@''REPLACE_FREXP''@|$(REPLACE_FREXP)|g' \
+	      -e 's|@''REPLACE_FREXPL''@|$(REPLACE_FREXPL)|g' \
+	      -e 's|@''REPLACE_ISFINITE''@|$(REPLACE_ISFINITE)|g' \
+	      -e 's|@''REPLACE_LDEXPL''@|$(REPLACE_LDEXPL)|g' \
+	      -e 's|@''REPLACE_ROUND''@|$(REPLACE_ROUND)|g' \
+	      -e 's|@''REPLACE_ROUNDF''@|$(REPLACE_ROUNDF)|g' \
+	      -e 's|@''REPLACE_ROUNDL''@|$(REPLACE_ROUNDL)|g' \
+	      -e 's|@''REPLACE_SIGNBIT''@|$(REPLACE_SIGNBIT)|g' \
+	      -e 's|@''REPLACE_SIGNBIT_USING_GCC''@|$(REPLACE_SIGNBIT_USING_GCC)|g' \
+	      -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \
+	      < $(srcdir)/math.in.h; \
+	} > $@-t
+	mv $@-t $@
+MOSTLYCLEANFILES += math.h math.h-t
+
+EXTRA_DIST += math.in.h
+
+## end   gnulib module math
+
 ## begin gnulib module mountlist
 
 
diff --git a/gl/base64.c b/gl/base64.c
new file mode 100644
index 00000000..e67075d1
--- /dev/null
+++ b/gl/base64.c
@@ -0,0 +1,425 @@
+/* base64.c -- Encode binary data using printable characters.
+   Copyright (C) 1999, 2000, 2001, 2004, 2005, 2006 Free Software
+   Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+/* Written by Simon Josefsson.  Partially adapted from GNU MailUtils
+ * (mailbox/filter_trans.c, as of 2004-11-28).  Improved by review
+ * from Paul Eggert, Bruno Haible, and Stepan Kasal.
+ *
+ * See also RFC 3548 <http://www.ietf.org/rfc/rfc3548.txt>.
+ *
+ * Be careful with error checking.  Here is how you would typically
+ * use these functions:
+ *
+ * bool ok = base64_decode_alloc (in, inlen, &out, &outlen);
+ * if (!ok)
+ *   FAIL: input was not valid base64
+ * if (out == NULL)
+ *   FAIL: memory allocation error
+ * OK: data in OUT/OUTLEN
+ *
+ * size_t outlen = base64_encode_alloc (in, inlen, &out);
+ * if (out == NULL && outlen == 0 && inlen != 0)
+ *   FAIL: input too long
+ * if (out == NULL)
+ *   FAIL: memory allocation error
+ * OK: data in OUT/OUTLEN.
+ *
+ */
+
+#include <config.h>
+
+/* Get prototype. */
+#include "base64.h"
+
+/* Get malloc. */
+#include <stdlib.h>
+
+/* Get UCHAR_MAX. */
+#include <limits.h>
+
+/* C89 compliant way to cast 'char' to 'unsigned char'. */
+static inline unsigned char
+to_uchar (char ch)
+{
+  return ch;
+}
+
+/* Base64 encode IN array of size INLEN into OUT array of size OUTLEN.
+   If OUTLEN is less than BASE64_LENGTH(INLEN), write as many bytes as
+   possible.  If OUTLEN is larger than BASE64_LENGTH(INLEN), also zero
+   terminate the output buffer. */
+void
+base64_encode (const char *restrict in, size_t inlen,
+	       char *restrict out, size_t outlen)
+{
+  static const char b64str[64] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+  while (inlen && outlen)
+    {
+      *out++ = b64str[(to_uchar (in[0]) >> 2) & 0x3f];
+      if (!--outlen)
+	break;
+      *out++ = b64str[((to_uchar (in[0]) << 4)
+		       + (--inlen ? to_uchar (in[1]) >> 4 : 0))
+		      & 0x3f];
+      if (!--outlen)
+	break;
+      *out++ =
+	(inlen
+	 ? b64str[((to_uchar (in[1]) << 2)
+		   + (--inlen ? to_uchar (in[2]) >> 6 : 0))
+		  & 0x3f]
+	 : '=');
+      if (!--outlen)
+	break;
+      *out++ = inlen ? b64str[to_uchar (in[2]) & 0x3f] : '=';
+      if (!--outlen)
+	break;
+      if (inlen)
+	inlen--;
+      if (inlen)
+	in += 3;
+    }
+
+  if (outlen)
+    *out = '\0';
+}
+
+/* Allocate a buffer and store zero terminated base64 encoded data
+   from array IN of size INLEN, returning BASE64_LENGTH(INLEN), i.e.,
+   the length of the encoded data, excluding the terminating zero.  On
+   return, the OUT variable will hold a pointer to newly allocated
+   memory that must be deallocated by the caller.  If output string
+   length would overflow, 0 is returned and OUT is set to NULL.  If
+   memory allocation failed, OUT is set to NULL, and the return value
+   indicates length of the requested memory block, i.e.,
+   BASE64_LENGTH(inlen) + 1. */
+size_t
+base64_encode_alloc (const char *in, size_t inlen, char **out)
+{
+  size_t outlen = 1 + BASE64_LENGTH (inlen);
+
+  /* Check for overflow in outlen computation.
+   *
+   * If there is no overflow, outlen >= inlen.
+   *
+   * If the operation (inlen + 2) overflows then it yields at most +1, so
+   * outlen is 0.
+   *
+   * If the multiplication overflows, we lose at least half of the
+   * correct value, so the result is < ((inlen + 2) / 3) * 2, which is
+   * less than (inlen + 2) * 0.66667, which is less than inlen as soon as
+   * (inlen > 4).
+   */
+  if (inlen > outlen)
+    {
+      *out = NULL;
+      return 0;
+    }
+
+  *out = malloc (outlen);
+  if (!*out)
+    return outlen;
+
+  base64_encode (in, inlen, *out, outlen);
+
+  return outlen - 1;
+}
+
+/* With this approach this file works independent of the charset used
+   (think EBCDIC).  However, it does assume that the characters in the
+   Base64 alphabet (A-Za-z0-9+/) are encoded in 0..255.  POSIX
+   1003.1-2001 require that char and unsigned char are 8-bit
+   quantities, though, taking care of that problem.  But this may be a
+   potential problem on non-POSIX C99 platforms.
+
+   IBM C V6 for AIX mishandles "#define B64(x) ...'x'...", so use "_"
+   as the formal parameter rather than "x".  */
+#define B64(_)					\
+  ((_) == 'A' ? 0				\
+   : (_) == 'B' ? 1				\
+   : (_) == 'C' ? 2				\
+   : (_) == 'D' ? 3				\
+   : (_) == 'E' ? 4				\
+   : (_) == 'F' ? 5				\
+   : (_) == 'G' ? 6				\
+   : (_) == 'H' ? 7				\
+   : (_) == 'I' ? 8				\
+   : (_) == 'J' ? 9				\
+   : (_) == 'K' ? 10				\
+   : (_) == 'L' ? 11				\
+   : (_) == 'M' ? 12				\
+   : (_) == 'N' ? 13				\
+   : (_) == 'O' ? 14				\
+   : (_) == 'P' ? 15				\
+   : (_) == 'Q' ? 16				\
+   : (_) == 'R' ? 17				\
+   : (_) == 'S' ? 18				\
+   : (_) == 'T' ? 19				\
+   : (_) == 'U' ? 20				\
+   : (_) == 'V' ? 21				\
+   : (_) == 'W' ? 22				\
+   : (_) == 'X' ? 23				\
+   : (_) == 'Y' ? 24				\
+   : (_) == 'Z' ? 25				\
+   : (_) == 'a' ? 26				\
+   : (_) == 'b' ? 27				\
+   : (_) == 'c' ? 28				\
+   : (_) == 'd' ? 29				\
+   : (_) == 'e' ? 30				\
+   : (_) == 'f' ? 31				\
+   : (_) == 'g' ? 32				\
+   : (_) == 'h' ? 33				\
+   : (_) == 'i' ? 34				\
+   : (_) == 'j' ? 35				\
+   : (_) == 'k' ? 36				\
+   : (_) == 'l' ? 37				\
+   : (_) == 'm' ? 38				\
+   : (_) == 'n' ? 39				\
+   : (_) == 'o' ? 40				\
+   : (_) == 'p' ? 41				\
+   : (_) == 'q' ? 42				\
+   : (_) == 'r' ? 43				\
+   : (_) == 's' ? 44				\
+   : (_) == 't' ? 45				\
+   : (_) == 'u' ? 46				\
+   : (_) == 'v' ? 47				\
+   : (_) == 'w' ? 48				\
+   : (_) == 'x' ? 49				\
+   : (_) == 'y' ? 50				\
+   : (_) == 'z' ? 51				\
+   : (_) == '0' ? 52				\
+   : (_) == '1' ? 53				\
+   : (_) == '2' ? 54				\
+   : (_) == '3' ? 55				\
+   : (_) == '4' ? 56				\
+   : (_) == '5' ? 57				\
+   : (_) == '6' ? 58				\
+   : (_) == '7' ? 59				\
+   : (_) == '8' ? 60				\
+   : (_) == '9' ? 61				\
+   : (_) == '+' ? 62				\
+   : (_) == '/' ? 63				\
+   : -1)
+
+static const signed char b64[0x100] = {
+  B64 (0), B64 (1), B64 (2), B64 (3),
+  B64 (4), B64 (5), B64 (6), B64 (7),
+  B64 (8), B64 (9), B64 (10), B64 (11),
+  B64 (12), B64 (13), B64 (14), B64 (15),
+  B64 (16), B64 (17), B64 (18), B64 (19),
+  B64 (20), B64 (21), B64 (22), B64 (23),
+  B64 (24), B64 (25), B64 (26), B64 (27),
+  B64 (28), B64 (29), B64 (30), B64 (31),
+  B64 (32), B64 (33), B64 (34), B64 (35),
+  B64 (36), B64 (37), B64 (38), B64 (39),
+  B64 (40), B64 (41), B64 (42), B64 (43),
+  B64 (44), B64 (45), B64 (46), B64 (47),
+  B64 (48), B64 (49), B64 (50), B64 (51),
+  B64 (52), B64 (53), B64 (54), B64 (55),
+  B64 (56), B64 (57), B64 (58), B64 (59),
+  B64 (60), B64 (61), B64 (62), B64 (63),
+  B64 (64), B64 (65), B64 (66), B64 (67),
+  B64 (68), B64 (69), B64 (70), B64 (71),
+  B64 (72), B64 (73), B64 (74), B64 (75),
+  B64 (76), B64 (77), B64 (78), B64 (79),
+  B64 (80), B64 (81), B64 (82), B64 (83),
+  B64 (84), B64 (85), B64 (86), B64 (87),
+  B64 (88), B64 (89), B64 (90), B64 (91),
+  B64 (92), B64 (93), B64 (94), B64 (95),
+  B64 (96), B64 (97), B64 (98), B64 (99),
+  B64 (100), B64 (101), B64 (102), B64 (103),
+  B64 (104), B64 (105), B64 (106), B64 (107),
+  B64 (108), B64 (109), B64 (110), B64 (111),
+  B64 (112), B64 (113), B64 (114), B64 (115),
+  B64 (116), B64 (117), B64 (118), B64 (119),
+  B64 (120), B64 (121), B64 (122), B64 (123),
+  B64 (124), B64 (125), B64 (126), B64 (127),
+  B64 (128), B64 (129), B64 (130), B64 (131),
+  B64 (132), B64 (133), B64 (134), B64 (135),
+  B64 (136), B64 (137), B64 (138), B64 (139),
+  B64 (140), B64 (141), B64 (142), B64 (143),
+  B64 (144), B64 (145), B64 (146), B64 (147),
+  B64 (148), B64 (149), B64 (150), B64 (151),
+  B64 (152), B64 (153), B64 (154), B64 (155),
+  B64 (156), B64 (157), B64 (158), B64 (159),
+  B64 (160), B64 (161), B64 (162), B64 (163),
+  B64 (164), B64 (165), B64 (166), B64 (167),
+  B64 (168), B64 (169), B64 (170), B64 (171),
+  B64 (172), B64 (173), B64 (174), B64 (175),
+  B64 (176), B64 (177), B64 (178), B64 (179),
+  B64 (180), B64 (181), B64 (182), B64 (183),
+  B64 (184), B64 (185), B64 (186), B64 (187),
+  B64 (188), B64 (189), B64 (190), B64 (191),
+  B64 (192), B64 (193), B64 (194), B64 (195),
+  B64 (196), B64 (197), B64 (198), B64 (199),
+  B64 (200), B64 (201), B64 (202), B64 (203),
+  B64 (204), B64 (205), B64 (206), B64 (207),
+  B64 (208), B64 (209), B64 (210), B64 (211),
+  B64 (212), B64 (213), B64 (214), B64 (215),
+  B64 (216), B64 (217), B64 (218), B64 (219),
+  B64 (220), B64 (221), B64 (222), B64 (223),
+  B64 (224), B64 (225), B64 (226), B64 (227),
+  B64 (228), B64 (229), B64 (230), B64 (231),
+  B64 (232), B64 (233), B64 (234), B64 (235),
+  B64 (236), B64 (237), B64 (238), B64 (239),
+  B64 (240), B64 (241), B64 (242), B64 (243),
+  B64 (244), B64 (245), B64 (246), B64 (247),
+  B64 (248), B64 (249), B64 (250), B64 (251),
+  B64 (252), B64 (253), B64 (254), B64 (255)
+};
+
+#if UCHAR_MAX == 255
+# define uchar_in_range(c) true
+#else
+# define uchar_in_range(c) ((c) <= 255)
+#endif
+
+/* Return true if CH is a character from the Base64 alphabet, and
+   false otherwise.  Note that '=' is padding and not considered to be
+   part of the alphabet.  */
+bool
+isbase64 (char ch)
+{
+  return uchar_in_range (to_uchar (ch)) && 0 <= b64[to_uchar (ch)];
+}
+
+/* Decode base64 encoded input array IN of length INLEN to output
+   array OUT that can hold *OUTLEN bytes.  Return true if decoding was
+   successful, i.e. if the input was valid base64 data, false
+   otherwise.  If *OUTLEN is too small, as many bytes as possible will
+   be written to OUT.  On return, *OUTLEN holds the length of decoded
+   bytes in OUT.  Note that as soon as any non-alphabet characters are
+   encountered, decoding is stopped and false is returned.  This means
+   that, when applicable, you must remove any line terminators that is
+   part of the data stream before calling this function.  */
+bool
+base64_decode (const char *restrict in, size_t inlen,
+	       char *restrict out, size_t *outlen)
+{
+  size_t outleft = *outlen;
+
+  while (inlen >= 2)
+    {
+      if (!isbase64 (in[0]) || !isbase64 (in[1]))
+	break;
+
+      if (outleft)
+	{
+	  *out++ = ((b64[to_uchar (in[0])] << 2)
+		    | (b64[to_uchar (in[1])] >> 4));
+	  outleft--;
+	}
+
+      if (inlen == 2)
+	break;
+
+      if (in[2] == '=')
+	{
+	  if (inlen != 4)
+	    break;
+
+	  if (in[3] != '=')
+	    break;
+
+	}
+      else
+	{
+	  if (!isbase64 (in[2]))
+	    break;
+
+	  if (outleft)
+	    {
+	      *out++ = (((b64[to_uchar (in[1])] << 4) & 0xf0)
+			| (b64[to_uchar (in[2])] >> 2));
+	      outleft--;
+	    }
+
+	  if (inlen == 3)
+	    break;
+
+	  if (in[3] == '=')
+	    {
+	      if (inlen != 4)
+		break;
+	    }
+	  else
+	    {
+	      if (!isbase64 (in[3]))
+		break;
+
+	      if (outleft)
+		{
+		  *out++ = (((b64[to_uchar (in[2])] << 6) & 0xc0)
+			    | b64[to_uchar (in[3])]);
+		  outleft--;
+		}
+	    }
+	}
+
+      in += 4;
+      inlen -= 4;
+    }
+
+  *outlen -= outleft;
+
+  if (inlen != 0)
+    return false;
+
+  return true;
+}
+
+/* Allocate an output buffer in *OUT, and decode the base64 encoded
+   data stored in IN of size INLEN to the *OUT buffer.  On return, the
+   size of the decoded data is stored in *OUTLEN.  OUTLEN may be NULL,
+   if the caller is not interested in the decoded length.  *OUT may be
+   NULL to indicate an out of memory error, in which case *OUTLEN
+   contains the size of the memory block needed.  The function returns
+   true on successful decoding and memory allocation errors.  (Use the
+   *OUT and *OUTLEN parameters to differentiate between successful
+   decoding and memory error.)  The function returns false if the
+   input was invalid, in which case *OUT is NULL and *OUTLEN is
+   undefined. */
+bool
+base64_decode_alloc (const char *in, size_t inlen, char **out,
+		     size_t *outlen)
+{
+  /* This may allocate a few bytes too much, depending on input,
+     but it's not worth the extra CPU time to compute the exact amount.
+     The exact amount is 3 * inlen / 4, minus 1 if the input ends
+     with "=" and minus another 1 if the input ends with "==".
+     Dividing before multiplying avoids the possibility of overflow.  */
+  size_t needlen = 3 * (inlen / 4) + 2;
+
+  *out = malloc (needlen);
+  if (!*out)
+    return true;
+
+  if (!base64_decode (in, inlen, *out, &needlen))
+    {
+      free (*out);
+      *out = NULL;
+      return false;
+    }
+
+  if (outlen)
+    *outlen = needlen;
+
+  return true;
+}
diff --git a/gl/base64.h b/gl/base64.h
new file mode 100644
index 00000000..1f9b203e
--- /dev/null
+++ b/gl/base64.h
@@ -0,0 +1,45 @@
+/* base64.h -- Encode binary data using printable characters.
+   Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
+   Written by Simon Josefsson.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef BASE64_H
+# define BASE64_H
+
+/* Get size_t. */
+# include <stddef.h>
+
+/* Get bool. */
+# include <stdbool.h>
+
+/* This uses that the expression (n+(k-1))/k means the smallest
+   integer >= n/k, i.e., the ceiling of n/k.  */
+# define BASE64_LENGTH(inlen) ((((inlen) + 2) / 3) * 4)
+
+extern bool isbase64 (char ch);
+
+extern void base64_encode (const char *restrict in, size_t inlen,
+			   char *restrict out, size_t outlen);
+
+extern size_t base64_encode_alloc (const char *in, size_t inlen, char **out);
+
+extern bool base64_decode (const char *restrict in, size_t inlen,
+			   char *restrict out, size_t *outlen);
+
+extern bool base64_decode_alloc (const char *in, size_t inlen,
+				 char **out, size_t *outlen);
+
+#endif /* BASE64_H */
diff --git a/gl/charset.alias b/gl/charset.alias
new file mode 100644
index 00000000..d9501e2b
--- /dev/null
+++ b/gl/charset.alias
@@ -0,0 +1,5 @@
+# This file contains a table of character encoding aliases,
+# suitable for operating system 'linux-gnu'.
+# It was automatically generated from config.charset.
+# Packages using this file: 
+ISO_646.IRV:1983 ASCII
diff --git a/gl/configmake.h b/gl/configmake.h
new file mode 100644
index 00000000..f73bc381
--- /dev/null
+++ b/gl/configmake.h
@@ -0,0 +1,25 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+#define PREFIX "/usr/local/nagios"
+#define EXEC_PREFIX "/usr/local/nagios"
+#define BINDIR "/usr/local/nagios/bin"
+#define SBINDIR "/usr/local/nagios/sbin"
+#define LIBEXECDIR "/usr/local/nagios/libexec"
+#define DATAROOTDIR "/usr/local/nagios/share"
+#define DATADIR "/usr/local/nagios/share"
+#define SYSCONFDIR "/usr/local/nagios/etc"
+#define SHAREDSTATEDIR "/usr/local/nagios/com"
+#define LOCALSTATEDIR "/usr/local/nagios/var"
+#define INCLUDEDIR "/usr/local/nagios/include"
+#define OLDINCLUDEDIR "/usr/include"
+#define DOCDIR "/usr/local/nagios/share/doc/nagios-plugins"
+#define INFODIR "/usr/local/nagios/share/info"
+#define HTMLDIR "/usr/local/nagios/share/doc/nagios-plugins"
+#define DVIDIR "/usr/local/nagios/share/doc/nagios-plugins"
+#define PDFDIR "/usr/local/nagios/share/doc/nagios-plugins"
+#define PSDIR "/usr/local/nagios/share/doc/nagios-plugins"
+#define LIBDIR "/usr/local/nagios/lib"
+#define LOCALEDIR "/usr/local/nagios/share/locale"
+#define MANDIR "/usr/local/nagios/share/man"
+#define PKGDATADIR "/usr/local/nagios/share/nagios-plugins"
+#define PKGINCLUDEDIR "/usr/local/nagios/include/nagios-plugins"
+#define PKGLIBDIR "/usr/local/nagios/lib/nagios-plugins"
diff --git a/gl/floor.c b/gl/floor.c
new file mode 100644
index 00000000..05a6591a
--- /dev/null
+++ b/gl/floor.c
@@ -0,0 +1,93 @@
+/* Round towards negative infinity.
+   Copyright (C) 2007 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <math.h>
+
+#include <float.h>
+
+#ifdef USE_LONG_DOUBLE
+# define FUNC floorl
+# define DOUBLE long double
+# define MANT_DIG LDBL_MANT_DIG
+# define L_(literal) literal##L
+#elif ! defined USE_FLOAT
+# define FUNC floor
+# define DOUBLE double
+# define MANT_DIG DBL_MANT_DIG
+# define L_(literal) literal
+#else /* defined USE_FLOAT */
+# define FUNC floorf
+# define DOUBLE float
+# define MANT_DIG FLT_MANT_DIG
+# define L_(literal) literal##f
+#endif
+
+/* 2^(MANT_DIG-1).  */
+static const DOUBLE TWO_MANT_DIG =
+  /* Assume MANT_DIG <= 5 * 31.
+     Use the identity
+       n = floor(n/5) + floor((n+1)/5) + ... + floor((n+4)/5).  */
+  (DOUBLE) (1U << ((MANT_DIG - 1) / 5))
+  * (DOUBLE) (1U << ((MANT_DIG - 1 + 1) / 5))
+  * (DOUBLE) (1U << ((MANT_DIG - 1 + 2) / 5))
+  * (DOUBLE) (1U << ((MANT_DIG - 1 + 3) / 5))
+  * (DOUBLE) (1U << ((MANT_DIG - 1 + 4) / 5));
+
+DOUBLE
+FUNC (DOUBLE x)
+{
+  /* The use of 'volatile' guarantees that excess precision bits are dropped
+     at each addition step and before the following comparison at the caller's
+     site.  It is necessary on x86 systems where double-floats are not IEEE
+     compliant by default, to avoid that the results become platform and compiler
+     option dependent.  'volatile' is a portable alternative to gcc's
+     -ffloat-store option.  */
+  volatile DOUBLE y = x;
+  volatile DOUBLE z = y;
+
+  if (z > L_(0.0))
+    {
+      /* Avoid rounding errors for values near 2^k, where k >= MANT_DIG-1.  */
+      if (z < TWO_MANT_DIG)
+	{
+	  /* Round to the next integer (nearest or up or down, doesn't matter).  */
+	  z += TWO_MANT_DIG;
+	  z -= TWO_MANT_DIG;
+	  /* Enforce rounding down.  */
+	  if (z > y)
+	    z -= L_(1.0);
+	}
+    }
+  else if (z < L_(0.0))
+    {
+      /* Avoid rounding errors for values near -2^k, where k >= MANT_DIG-1.  */
+      if (z > - TWO_MANT_DIG)
+	{
+	  /* Round to the next integer (nearest or up or down, doesn't matter).  */
+	  z -= TWO_MANT_DIG;
+	  z += TWO_MANT_DIG;
+	  /* Enforce rounding down.  */
+	  if (z > y)
+	    z -= L_(1.0);
+	}
+    }
+  return z;
+}
diff --git a/gl/floorf.c b/gl/floorf.c
new file mode 100644
index 00000000..f0aff338
--- /dev/null
+++ b/gl/floorf.c
@@ -0,0 +1,20 @@
+/* Round towards negative infinity.
+   Copyright (C) 2007 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#define USE_FLOAT
+#include "floor.c"
diff --git a/gl/m4/base64.m4 b/gl/m4/base64.m4
new file mode 100644
index 00000000..24801efa
--- /dev/null
+++ b/gl/m4/base64.m4
@@ -0,0 +1,16 @@
+# base64.m4 serial 3
+dnl Copyright (C) 2004, 2006 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_BASE64],
+[
+  gl_PREREQ_BASE64
+])
+
+# Prerequisites of lib/base64.c.
+AC_DEFUN([gl_PREREQ_BASE64], [
+  AC_REQUIRE([AC_C_INLINE])
+  AC_REQUIRE([AC_C_RESTRICT])
+])
diff --git a/gl/m4/floorf.m4 b/gl/m4/floorf.m4
new file mode 100644
index 00000000..8cdaa946
--- /dev/null
+++ b/gl/m4/floorf.m4
@@ -0,0 +1,62 @@
+# floorf.m4 serial 3
+dnl Copyright (C) 2007 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_FLOORF],
+[
+  AC_REQUIRE([gl_MATH_H_DEFAULTS])
+  dnl Persuade glibc <math.h> to declare floorf().
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  dnl Test whether floorf() is declared.
+  AC_CHECK_DECLS([floorf], , , [#include <math.h>])
+  if test "$ac_cv_have_decl_floorf" = yes; then
+    dnl Test whether floorf() can be used without libm.
+    gl_FUNC_FLOORF_LIBS
+    if test "$FLOORF_LIBM" = "?"; then
+      dnl Sun C 5.0 on Solaris declares floorf() and has it in the system-wide
+      dnl libm.so, but not in the libm.so that the compiler uses.
+      REPLACE_FLOORF=1
+    fi
+  else
+    REPLACE_FLOORF=1
+  fi
+  if test $REPLACE_FLOORF = 1; then
+    AC_LIBOBJ([floorf])
+    FLOORF_LIBM=
+  fi
+  AC_SUBST([REPLACE_FLOORF])
+  AC_SUBST([FLOORF_LIBM])
+])
+
+# Determines the libraries needed to get the floorf() function.
+# Sets FLOORF_LIBM.
+AC_DEFUN([gl_FUNC_FLOORF_LIBS],
+[
+  AC_CACHE_VAL([gl_cv_func_floorf_libm], [
+    gl_cv_func_floorf_libm=?
+    AC_TRY_LINK([
+       #ifndef __NO_MATH_INLINES
+       # define __NO_MATH_INLINES 1 /* for glibc */
+       #endif
+       #include <math.h>
+       float x;],
+      [x = floorf(x);],
+      [gl_cv_func_floorf_libm=])
+    if test "$gl_cv_func_floorf_libm" = "?"; then
+      save_LIBS="$LIBS"
+      LIBS="$LIBS -lm"
+      AC_TRY_LINK([
+         #ifndef __NO_MATH_INLINES
+         # define __NO_MATH_INLINES 1 /* for glibc */
+         #endif
+         #include <math.h>
+         float x;],
+        [x = floorf(x);],
+        [gl_cv_func_floorf_libm="-lm"])
+      LIBS="$save_LIBS"
+    fi
+  ])
+  FLOORF_LIBM="$gl_cv_func_floorf_libm"
+])
diff --git a/gl/m4/gnulib-cache.m4 b/gl/m4/gnulib-cache.m4
index 6da4d657..302dc191 100644
--- a/gl/m4/gnulib-cache.m4
+++ b/gl/m4/gnulib-cache.m4
@@ -15,11 +15,11 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --dir=. --lib=libgnu --source-base=gl --m4-base=gl/m4 --doc-base=doc --aux-dir=build-aux --no-libtool --macro-prefix=gl dirname fsusage getaddrinfo gethostname getloadavg getopt gettext mountlist regex vasprintf vsnprintf
+#   gnulib-tool --import --dir=. --lib=libgnu --source-base=gl --m4-base=gl/m4 --doc-base=doc --aux-dir=build-aux --no-libtool --macro-prefix=gl base64 dirname floorf fsusage getaddrinfo gethostname getloadavg getopt gettext mountlist regex vasprintf vsnprintf
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([])
-gl_MODULES([dirname fsusage getaddrinfo gethostname getloadavg getopt gettext mountlist regex vasprintf vsnprintf])
+gl_MODULES([base64 dirname floorf fsusage getaddrinfo gethostname getloadavg getopt gettext mountlist regex vasprintf vsnprintf])
 gl_AVOID([])
 gl_SOURCE_BASE([gl])
 gl_M4_BASE([gl/m4])
diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index a17e36ad..85ad2e9d 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -44,6 +44,7 @@ AC_DEFUN([gl_INIT],
   gl_FUNC_ALLOCA
   gl_HEADER_ARPA_INET
   AC_PROG_MKDIR_P
+  gl_FUNC_BASE64
   gl_C_STRTOD
   gl_CLOEXEC
   gl_DIRNAME
@@ -56,6 +57,8 @@ AC_DEFUN([gl_INIT],
   gl_FCNTL_SAFER
   gl_MODULE_INDICATOR([fcntl-safer])
   gl_FLOAT_H
+  gl_FUNC_FLOORF
+  gl_MATH_MODULE_INDICATOR([floorf])
   gl_FSUSAGE
   gl_GETADDRINFO
   gl_FUNC_GETHOSTNAME
@@ -74,6 +77,7 @@ AC_DEFUN([gl_INIT],
   AC_DEFINE([GNULIB_MALLOC_GNU], 1, [Define to indicate the 'malloc' module.])
   gl_FUNC_MALLOC_POSIX
   gl_STDLIB_MODULE_INDICATOR([malloc-posix])
+  gl_MATH_H
   gl_MOUNTLIST
   gl_HEADER_NETINET_IN
   AC_PROG_MKDIR_P
@@ -240,6 +244,8 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/alloca.in.h
   lib/asnprintf.c
   lib/asprintf.c
+  lib/base64.c
+  lib/base64.h
   lib/basename.c
   lib/c-strtod.c
   lib/c-strtod.h
@@ -259,6 +265,8 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/fd-safer.c
   lib/float+.h
   lib/float.in.h
+  lib/floor.c
+  lib/floorf.c
   lib/fsusage.c
   lib/fsusage.h
   lib/full-read.c
@@ -281,6 +289,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/localcharset.c
   lib/localcharset.h
   lib/malloc.c
+  lib/math.in.h
   lib/mountlist.c
   lib/mountlist.h
   lib/netinet_in.in.h
@@ -333,6 +342,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/absolute-header.m4
   m4/alloca.m4
   m4/arpa_inet_h.m4
+  m4/base64.m4
   m4/c-strtod.m4
   m4/cloexec.m4
   m4/codeset.m4
@@ -345,6 +355,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/extensions.m4
   m4/fcntl-safer.m4
   m4/float_h.m4
+  m4/floorf.m4
   m4/fstypename.m4
   m4/fsusage.m4
   m4/getaddrinfo.m4
@@ -376,6 +387,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/longlong.m4
   m4/ls-mntd-fs.m4
   m4/malloc.m4
+  m4/math_h.m4
   m4/mountlist.m4
   m4/netinet_in_h.m4
   m4/nls.m4
diff --git a/gl/m4/math_h.m4 b/gl/m4/math_h.m4
new file mode 100644
index 00000000..dd99e7f2
--- /dev/null
+++ b/gl/m4/math_h.m4
@@ -0,0 +1,66 @@
+# math_h.m4 serial 9
+dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_MATH_H],
+[
+  AC_REQUIRE([gl_MATH_H_DEFAULTS])
+  gl_CHECK_NEXT_HEADERS([math.h])
+])
+
+AC_DEFUN([gl_MATH_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_MATH_H_DEFAULTS])
+  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+])
+
+AC_DEFUN([gl_MATH_H_DEFAULTS],
+[
+  GNULIB_CEILF=0;    AC_SUBST([GNULIB_CEILF])
+  GNULIB_CEILL=0;    AC_SUBST([GNULIB_CEILL])
+  GNULIB_FLOORF=0;   AC_SUBST([GNULIB_FLOORF])
+  GNULIB_FLOORL=0;   AC_SUBST([GNULIB_FLOORL])
+  GNULIB_FREXP=0;    AC_SUBST([GNULIB_FREXP])
+  GNULIB_FREXPL=0;   AC_SUBST([GNULIB_FREXPL])
+  GNULIB_ISFINITE=0; AC_SUBST([GNULIB_ISFINITE])
+  GNULIB_LDEXPL=0;   AC_SUBST([GNULIB_LDEXPL])
+  GNULIB_MATHL=0;    AC_SUBST([GNULIB_MATHL])
+  GNULIB_ROUND=0;    AC_SUBST([GNULIB_ROUND])
+  GNULIB_ROUNDF=0;   AC_SUBST([GNULIB_ROUNDF])
+  GNULIB_ROUNDL=0;   AC_SUBST([GNULIB_ROUNDL])
+  GNULIB_SIGNBIT=0;  AC_SUBST([GNULIB_SIGNBIT])
+  GNULIB_TRUNC=0;    AC_SUBST([GNULIB_TRUNC])
+  GNULIB_TRUNCF=0;   AC_SUBST([GNULIB_TRUNCF])
+  GNULIB_TRUNCL=0;   AC_SUBST([GNULIB_TRUNCL])
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_DECL_ACOSL=1;           AC_SUBST([HAVE_DECL_ACOSL])
+  HAVE_DECL_ASINL=1;           AC_SUBST([HAVE_DECL_ASINL])
+  HAVE_DECL_ATANL=1;           AC_SUBST([HAVE_DECL_ATANL])
+  HAVE_DECL_COSL=1;            AC_SUBST([HAVE_DECL_COSL])
+  HAVE_DECL_EXPL=1;            AC_SUBST([HAVE_DECL_EXPL])
+  HAVE_DECL_FREXPL=1;          AC_SUBST([HAVE_DECL_FREXPL])
+  HAVE_DECL_LDEXPL=1;          AC_SUBST([HAVE_DECL_LDEXPL])
+  HAVE_DECL_LOGL=1;            AC_SUBST([HAVE_DECL_LOGL])
+  HAVE_DECL_SINL=1;            AC_SUBST([HAVE_DECL_SINL])
+  HAVE_DECL_SQRTL=1;           AC_SUBST([HAVE_DECL_SQRTL])
+  HAVE_DECL_TANL=1;            AC_SUBST([HAVE_DECL_TANL])
+  HAVE_DECL_TRUNC=1;           AC_SUBST([HAVE_DECL_TRUNC])
+  HAVE_DECL_TRUNCF=1;          AC_SUBST([HAVE_DECL_TRUNCF])
+  HAVE_DECL_TRUNCL=1;          AC_SUBST([HAVE_DECL_TRUNCL])
+  REPLACE_CEILF=0;             AC_SUBST([REPLACE_CEILF])
+  REPLACE_CEILL=0;             AC_SUBST([REPLACE_CEILL])
+  REPLACE_FLOORF=0;            AC_SUBST([REPLACE_FLOORF])
+  REPLACE_FLOORL=0;            AC_SUBST([REPLACE_FLOORL])
+  REPLACE_FREXP=0;             AC_SUBST([REPLACE_FREXP])
+  REPLACE_FREXPL=0;            AC_SUBST([REPLACE_FREXPL])
+  REPLACE_ISFINITE=0;          AC_SUBST([REPLACE_ISFINITE])
+  REPLACE_LDEXPL=0;            AC_SUBST([REPLACE_LDEXPL])
+  REPLACE_ROUND=0;             AC_SUBST([REPLACE_ROUND])
+  REPLACE_ROUNDF=0;            AC_SUBST([REPLACE_ROUNDF])
+  REPLACE_ROUNDL=0;            AC_SUBST([REPLACE_ROUNDL])
+  REPLACE_SIGNBIT=0;           AC_SUBST([REPLACE_SIGNBIT])
+  REPLACE_SIGNBIT_USING_GCC=0; AC_SUBST([REPLACE_SIGNBIT_USING_GCC])
+])
diff --git a/gl/math.h b/gl/math.h
new file mode 100644
index 00000000..9db986e0
--- /dev/null
+++ b/gl/math.h
@@ -0,0 +1,442 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* A GNU-like <math.h>.
+
+   Copyright (C) 2002-2003, 2007 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_MATH_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#include_next <math.h>
+
+#ifndef _GL_MATH_H
+#define _GL_MATH_H
+
+
+/* The definition of GL_LINK_WARNING is copied here.  */
+/* GL_LINK_WARNING("literal string") arranges to emit the literal string as
+   a linker warning on most glibc systems.
+   We use a linker warning rather than a preprocessor warning, because
+   #warning cannot be used inside macros.  */
+#ifndef GL_LINK_WARNING
+  /* This works on platforms with GNU ld and ELF object format.
+     Testing __GLIBC__ is sufficient for asserting that GNU ld is in use.
+     Testing __ELF__ guarantees the ELF object format.
+     Testing __GNUC__ is necessary for the compound expression syntax.  */
+# if defined __GLIBC__ && defined __ELF__ && defined __GNUC__
+#  define GL_LINK_WARNING(message) \
+     GL_LINK_WARNING1 (__FILE__, __LINE__, message)
+#  define GL_LINK_WARNING1(file, line, message) \
+     GL_LINK_WARNING2 (file, line, message)  /* macroexpand file and line */
+#  define GL_LINK_WARNING2(file, line, message) \
+     GL_LINK_WARNING3 (file ":" #line ": warning: " message)
+#  define GL_LINK_WARNING3(message) \
+     ({ static const char warning[sizeof (message)]		\
+          __attribute__ ((__unused__,				\
+                          __section__ (".gnu.warning"),		\
+                          __aligned__ (1)))			\
+          = message "\n";					\
+        (void)0;						\
+     })
+# else
+#  define GL_LINK_WARNING(message) ((void) 0)
+# endif
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Write x as
+     x = mantissa * 2^exp
+   where
+     If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
+     If x is zero: mantissa = x, exp = 0.
+     If x is infinite or NaN: mantissa = x, exp unspecified.
+   Store exp in *EXPPTR and return mantissa.  */
+#if 0
+# if 0
+#  define frexp rpl_frexp
+extern double frexp (double x, int *expptr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef frexp
+# define frexp(x,e) \
+    (GL_LINK_WARNING ("frexp is unportable - " \
+                      "use gnulib module frexp for portability"), \
+     frexp (x, e))
+#endif
+
+
+#if 0 || !1
+extern long double acosl (long double x);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef acosl
+# define acosl(x) \
+    (GL_LINK_WARNING ("acosl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     acosl (x))
+#endif
+
+
+#if 0 || !1
+extern long double asinl (long double x);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef asinl
+# define asinl(x) \
+    (GL_LINK_WARNING ("asinl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     asinl (x))
+#endif
+
+
+#if 0 || !1
+extern long double atanl (long double x);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef atanl
+# define atanl(x) \
+    (GL_LINK_WARNING ("atanl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     atanl (x))
+#endif
+
+
+#if 0
+# if 0
+#  define ceilf rpl_ceilf
+extern float ceilf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ceilf
+# define ceilf(x) \
+    (GL_LINK_WARNING ("ceilf is unportable - " \
+                      "use gnulib module ceilf for portability"), \
+     ceilf (x))
+#endif
+
+#if 0
+# if 0
+#  define ceill rpl_ceill
+extern long double ceill (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ceill
+# define ceill(x) \
+    (GL_LINK_WARNING ("ceill is unportable - " \
+                      "use gnulib module ceill for portability"), \
+     ceill (x))
+#endif
+
+
+#if 0 || !1
+extern long double cosl (long double x);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef cosl
+# define cosl(x) \
+    (GL_LINK_WARNING ("cosl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     cosl (x))
+#endif
+
+
+#if 0 || !1
+extern long double expl (long double x);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef expl
+# define expl(x) \
+    (GL_LINK_WARNING ("expl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     expl (x))
+#endif
+
+
+#if 1
+# if 0
+#  define floorf rpl_floorf
+extern float floorf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef floorf
+# define floorf(x) \
+    (GL_LINK_WARNING ("floorf is unportable - " \
+                      "use gnulib module floorf for portability"), \
+     floorf (x))
+#endif
+
+#if 0
+# if 0
+#  define floorl rpl_floorl
+extern long double floorl (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef floorl
+# define floorl(x) \
+    (GL_LINK_WARNING ("floorl is unportable - " \
+                      "use gnulib module floorl for portability"), \
+     floorl (x))
+#endif
+
+
+/* Write x as
+     x = mantissa * 2^exp
+   where
+     If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
+     If x is zero: mantissa = x, exp = 0.
+     If x is infinite or NaN: mantissa = x, exp unspecified.
+   Store exp in *EXPPTR and return mantissa.  */
+#if 0 && 0
+# define frexpl rpl_frexpl
+#endif
+#if (0 && 0) || !1
+extern long double frexpl (long double x, int *expptr);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef frexpl
+# define frexpl(x,e) \
+    (GL_LINK_WARNING ("frexpl is unportable - " \
+                      "use gnulib module frexpl for portability"), \
+     frexpl (x, e))
+#endif
+
+
+/* Return x * 2^exp.  */
+#if 0 && 0
+# define ldexpl rpl_ldexpl
+#endif
+#if (0 && 0) || !1
+extern long double ldexpl (long double x, int exp);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef ldexpl
+# define ldexpl(x,e) \
+    (GL_LINK_WARNING ("ldexpl is unportable - " \
+                      "use gnulib module ldexpl for portability"), \
+     ldexpl (x, e))
+#endif
+
+
+#if 0 || !1
+extern long double logl (long double x);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef logl
+# define logl(x) \
+    (GL_LINK_WARNING ("logl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     logl (x))
+#endif
+
+
+#if 0
+# if 0
+#  undef roundf
+#  define roundf rpl_roundf
+extern float roundf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef roundf
+# define roundf(x) \
+    (GL_LINK_WARNING ("roundf is unportable - " \
+                      "use gnulib module roundf for portability"), \
+     roundf (x))
+#endif
+
+#if 0
+# if 0
+#  undef round
+#  define round rpl_round
+extern double round (double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef round
+# define round(x) \
+    (GL_LINK_WARNING ("round is unportable - " \
+                      "use gnulib module round for portability"), \
+     round (x))
+#endif
+
+#if 0
+# if 0
+#  undef roundl
+#  define roundl rpl_roundl
+extern long double roundl (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef roundl
+# define roundl(x) \
+    (GL_LINK_WARNING ("roundl is unportable - " \
+                      "use gnulib module roundl for portability"), \
+     roundl (x))
+#endif
+
+
+#if 0 || !1
+extern long double sinl (long double x);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef sinl
+# define sinl(x) \
+    (GL_LINK_WARNING ("sinl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     sinl (x))
+#endif
+
+
+#if 0 || !1
+extern long double sqrtl (long double x);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef sqrtl
+# define sqrtl(x) \
+    (GL_LINK_WARNING ("sqrtl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     sqrtl (x))
+#endif
+
+
+#if 0 || !1
+extern long double tanl (long double x);
+#endif
+#if !0 && defined GNULIB_POSIXCHECK
+# undef tanl
+# define tanl(x) \
+    (GL_LINK_WARNING ("tanl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     tanl (x))
+#endif
+
+
+#if 0
+# if !1
+#  define truncf rpl_truncf
+extern float truncf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef truncf
+# define truncf(x) \
+    (GL_LINK_WARNING ("truncf is unportable - " \
+                      "use gnulib module truncf for portability"), \
+     truncf (x))
+#endif
+
+#if 0
+# if !1
+#  define trunc rpl_trunc
+extern double trunc (double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef trunc
+# define trunc(x) \
+    (GL_LINK_WARNING ("trunc is unportable - " \
+                      "use gnulib module trunc for portability"), \
+     trunc (x))
+#endif
+
+#if 0
+# if !1
+#  define truncl rpl_truncl
+extern long double truncl (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef truncl
+# define truncl(x) \
+    (GL_LINK_WARNING ("truncl is unportable - " \
+                      "use gnulib module truncl for portability"), \
+     truncl (x))
+#endif
+
+
+#if 0
+# if 0
+extern int gl_isfinitef (float x);
+extern int gl_isfinited (double x);
+extern int gl_isfinitel (long double x);
+#  undef isfinite
+#  define isfinite(x) \
+   (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
+    sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
+    gl_isfinitef (x))
+# endif
+#elif defined GNULIB_POSIXCHECK
+  /* How to override a macro?  */
+#endif
+
+
+#if 0
+# if 0
+#  undef signbit
+   /* GCC 4.0 and newer provides three built-ins for signbit.  */
+#  define signbit(x) \
+   (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
+    sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
+    __builtin_signbitf (x))
+# endif
+# if 0
+#  undef signbit
+extern int gl_signbitf (float arg);
+extern int gl_signbitd (double arg);
+extern int gl_signbitl (long double arg);
+#  if __GNUC__ >= 2 && !__STRICT_ANSI__
+#   if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT
+#    define gl_signbitf(arg) \
+       ({ union { float _value;						\
+                  unsigned int _word[(sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
+                } _m;							\
+          _m._value = (arg);						\
+          (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1;		\
+        })
+#   endif
+#   if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT
+#    define gl_signbitd(arg) \
+       ({ union { double _value;						\
+                  unsigned int _word[(sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
+                } _m;							\
+          _m._value = (arg);						\
+          (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1;		\
+        })
+#   endif
+#   if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT
+#    define gl_signbitl(arg) \
+       ({ union { long double _value;					\
+                  unsigned int _word[(sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
+                } _m;							\
+          _m._value = (arg);						\
+          (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1;		\
+        })
+#   endif
+#  endif
+#  define signbit(x) \
+   (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
+    sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
+    gl_signbitf (x))
+# endif
+#elif defined GNULIB_POSIXCHECK
+  /* How to override a macro?  */
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GL_MATH_H */
+#endif /* _GL_MATH_H */
diff --git a/gl/math.in.h b/gl/math.in.h
new file mode 100644
index 00000000..c3515d73
--- /dev/null
+++ b/gl/math.in.h
@@ -0,0 +1,413 @@
+/* A GNU-like <math.h>.
+
+   Copyright (C) 2002-2003, 2007 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_MATH_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_MATH_H@
+
+#ifndef _GL_MATH_H
+#define _GL_MATH_H
+
+
+/* The definition of GL_LINK_WARNING is copied here.  */
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Write x as
+     x = mantissa * 2^exp
+   where
+     If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
+     If x is zero: mantissa = x, exp = 0.
+     If x is infinite or NaN: mantissa = x, exp unspecified.
+   Store exp in *EXPPTR and return mantissa.  */
+#if @GNULIB_FREXP@
+# if @REPLACE_FREXP@
+#  define frexp rpl_frexp
+extern double frexp (double x, int *expptr);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef frexp
+# define frexp(x,e) \
+    (GL_LINK_WARNING ("frexp is unportable - " \
+                      "use gnulib module frexp for portability"), \
+     frexp (x, e))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_ACOSL@
+extern long double acosl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef acosl
+# define acosl(x) \
+    (GL_LINK_WARNING ("acosl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     acosl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_ASINL@
+extern long double asinl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef asinl
+# define asinl(x) \
+    (GL_LINK_WARNING ("asinl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     asinl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_ATANL@
+extern long double atanl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef atanl
+# define atanl(x) \
+    (GL_LINK_WARNING ("atanl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     atanl (x))
+#endif
+
+
+#if @GNULIB_CEILF@
+# if @REPLACE_CEILF@
+#  define ceilf rpl_ceilf
+extern float ceilf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ceilf
+# define ceilf(x) \
+    (GL_LINK_WARNING ("ceilf is unportable - " \
+                      "use gnulib module ceilf for portability"), \
+     ceilf (x))
+#endif
+
+#if @GNULIB_CEILL@
+# if @REPLACE_CEILL@
+#  define ceill rpl_ceill
+extern long double ceill (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ceill
+# define ceill(x) \
+    (GL_LINK_WARNING ("ceill is unportable - " \
+                      "use gnulib module ceill for portability"), \
+     ceill (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_COSL@
+extern long double cosl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef cosl
+# define cosl(x) \
+    (GL_LINK_WARNING ("cosl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     cosl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_EXPL@
+extern long double expl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef expl
+# define expl(x) \
+    (GL_LINK_WARNING ("expl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     expl (x))
+#endif
+
+
+#if @GNULIB_FLOORF@
+# if @REPLACE_FLOORF@
+#  define floorf rpl_floorf
+extern float floorf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef floorf
+# define floorf(x) \
+    (GL_LINK_WARNING ("floorf is unportable - " \
+                      "use gnulib module floorf for portability"), \
+     floorf (x))
+#endif
+
+#if @GNULIB_FLOORL@
+# if @REPLACE_FLOORL@
+#  define floorl rpl_floorl
+extern long double floorl (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef floorl
+# define floorl(x) \
+    (GL_LINK_WARNING ("floorl is unportable - " \
+                      "use gnulib module floorl for portability"), \
+     floorl (x))
+#endif
+
+
+/* Write x as
+     x = mantissa * 2^exp
+   where
+     If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
+     If x is zero: mantissa = x, exp = 0.
+     If x is infinite or NaN: mantissa = x, exp unspecified.
+   Store exp in *EXPPTR and return mantissa.  */
+#if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
+# define frexpl rpl_frexpl
+#endif
+#if (@GNULIB_FREXPL@ && @REPLACE_FREXPL@) || !@HAVE_DECL_FREXPL@
+extern long double frexpl (long double x, int *expptr);
+#endif
+#if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
+# undef frexpl
+# define frexpl(x,e) \
+    (GL_LINK_WARNING ("frexpl is unportable - " \
+                      "use gnulib module frexpl for portability"), \
+     frexpl (x, e))
+#endif
+
+
+/* Return x * 2^exp.  */
+#if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
+# define ldexpl rpl_ldexpl
+#endif
+#if (@GNULIB_LDEXPL@ && @REPLACE_LDEXPL@) || !@HAVE_DECL_LDEXPL@
+extern long double ldexpl (long double x, int exp);
+#endif
+#if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
+# undef ldexpl
+# define ldexpl(x,e) \
+    (GL_LINK_WARNING ("ldexpl is unportable - " \
+                      "use gnulib module ldexpl for portability"), \
+     ldexpl (x, e))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_LOGL@
+extern long double logl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef logl
+# define logl(x) \
+    (GL_LINK_WARNING ("logl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     logl (x))
+#endif
+
+
+#if @GNULIB_ROUNDF@
+# if @REPLACE_ROUNDF@
+#  undef roundf
+#  define roundf rpl_roundf
+extern float roundf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef roundf
+# define roundf(x) \
+    (GL_LINK_WARNING ("roundf is unportable - " \
+                      "use gnulib module roundf for portability"), \
+     roundf (x))
+#endif
+
+#if @GNULIB_ROUND@
+# if @REPLACE_ROUND@
+#  undef round
+#  define round rpl_round
+extern double round (double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef round
+# define round(x) \
+    (GL_LINK_WARNING ("round is unportable - " \
+                      "use gnulib module round for portability"), \
+     round (x))
+#endif
+
+#if @GNULIB_ROUNDL@
+# if @REPLACE_ROUNDL@
+#  undef roundl
+#  define roundl rpl_roundl
+extern long double roundl (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef roundl
+# define roundl(x) \
+    (GL_LINK_WARNING ("roundl is unportable - " \
+                      "use gnulib module roundl for portability"), \
+     roundl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_SINL@
+extern long double sinl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef sinl
+# define sinl(x) \
+    (GL_LINK_WARNING ("sinl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     sinl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_SQRTL@
+extern long double sqrtl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef sqrtl
+# define sqrtl(x) \
+    (GL_LINK_WARNING ("sqrtl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     sqrtl (x))
+#endif
+
+
+#if @GNULIB_MATHL@ || !@HAVE_DECL_TANL@
+extern long double tanl (long double x);
+#endif
+#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK
+# undef tanl
+# define tanl(x) \
+    (GL_LINK_WARNING ("tanl is unportable - " \
+                      "use gnulib module mathl for portability"), \
+     tanl (x))
+#endif
+
+
+#if @GNULIB_TRUNCF@
+# if !@HAVE_DECL_TRUNCF@
+#  define truncf rpl_truncf
+extern float truncf (float x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef truncf
+# define truncf(x) \
+    (GL_LINK_WARNING ("truncf is unportable - " \
+                      "use gnulib module truncf for portability"), \
+     truncf (x))
+#endif
+
+#if @GNULIB_TRUNC@
+# if !@HAVE_DECL_TRUNC@
+#  define trunc rpl_trunc
+extern double trunc (double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef trunc
+# define trunc(x) \
+    (GL_LINK_WARNING ("trunc is unportable - " \
+                      "use gnulib module trunc for portability"), \
+     trunc (x))
+#endif
+
+#if @GNULIB_TRUNCL@
+# if !@HAVE_DECL_TRUNCL@
+#  define truncl rpl_truncl
+extern long double truncl (long double x);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef truncl
+# define truncl(x) \
+    (GL_LINK_WARNING ("truncl is unportable - " \
+                      "use gnulib module truncl for portability"), \
+     truncl (x))
+#endif
+
+
+#if @GNULIB_ISFINITE@
+# if @REPLACE_ISFINITE@
+extern int gl_isfinitef (float x);
+extern int gl_isfinited (double x);
+extern int gl_isfinitel (long double x);
+#  undef isfinite
+#  define isfinite(x) \
+   (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
+    sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
+    gl_isfinitef (x))
+# endif
+#elif defined GNULIB_POSIXCHECK
+  /* How to override a macro?  */
+#endif
+
+
+#if @GNULIB_SIGNBIT@
+# if @REPLACE_SIGNBIT_USING_GCC@
+#  undef signbit
+   /* GCC 4.0 and newer provides three built-ins for signbit.  */
+#  define signbit(x) \
+   (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
+    sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
+    __builtin_signbitf (x))
+# endif
+# if @REPLACE_SIGNBIT@
+#  undef signbit
+extern int gl_signbitf (float arg);
+extern int gl_signbitd (double arg);
+extern int gl_signbitl (long double arg);
+#  if __GNUC__ >= 2 && !__STRICT_ANSI__
+#   if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT
+#    define gl_signbitf(arg) \
+       ({ union { float _value;						\
+                  unsigned int _word[(sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
+                } _m;							\
+          _m._value = (arg);						\
+          (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1;		\
+        })
+#   endif
+#   if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT
+#    define gl_signbitd(arg) \
+       ({ union { double _value;						\
+                  unsigned int _word[(sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
+                } _m;							\
+          _m._value = (arg);						\
+          (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1;		\
+        })
+#   endif
+#   if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT
+#    define gl_signbitl(arg) \
+       ({ union { long double _value;					\
+                  unsigned int _word[(sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \
+                } _m;							\
+          _m._value = (arg);						\
+          (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1;		\
+        })
+#   endif
+#  endif
+#  define signbit(x) \
+   (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
+    sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
+    gl_signbitf (x))
+# endif
+#elif defined GNULIB_POSIXCHECK
+  /* How to override a macro?  */
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GL_MATH_H */
+#endif /* _GL_MATH_H */
diff --git a/gl/ref-add.sed b/gl/ref-add.sed
new file mode 100644
index 00000000..3ac991fe
--- /dev/null
+++ b/gl/ref-add.sed
@@ -0,0 +1,10 @@
+/^# Packages using this file: / {
+  s/# Packages using this file://
+  ta
+  :a
+  s/ nagios-plugins / nagios-plugins /
+  tb
+  s/ $/ nagios-plugins /
+  :b
+  s/^/# Packages using this file:/
+}
diff --git a/gl/ref-del.sed b/gl/ref-del.sed
new file mode 100644
index 00000000..a48fdb77
--- /dev/null
+++ b/gl/ref-del.sed
@@ -0,0 +1,5 @@
+/^# Packages using this file: / {
+  s/# Packages using this file://
+  s/ nagios-plugins / /
+  s/^/# Packages using this file:/
+}
diff --git a/gl/stdio.h b/gl/stdio.h
new file mode 100644
index 00000000..f09ee831
--- /dev/null
+++ b/gl/stdio.h
@@ -0,0 +1,411 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* A GNU-like <stdio.h>.
+
+   Copyright (C) 2004, 2007-2008 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#if defined __need_FILE || defined __need___FILE
+/* Special invocation convention inside glibc header files.  */
+
+#include_next <stdio.h>
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _GL_STDIO_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#include_next <stdio.h>
+
+#ifndef _GL_STDIO_H
+#define _GL_STDIO_H
+
+#include <stdarg.h>
+#include <stddef.h>
+
+#if (0 && 0) \
+  || (0 && 0) \
+  || (0 && !1) \
+  || (0 && (!1 || 0))
+/* Get off_t and ssize_t.  */
+# include <sys/types.h>
+#endif
+
+#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
+#  define __attribute__(Spec) /* empty */
+# endif
+/* The __-protected variants of `format' and `printf' attributes
+   are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+#  define __format__ format
+#  define __printf__ printf
+# endif
+#endif
+
+
+/* The definition of GL_LINK_WARNING is copied here.  */
+/* GL_LINK_WARNING("literal string") arranges to emit the literal string as
+   a linker warning on most glibc systems.
+   We use a linker warning rather than a preprocessor warning, because
+   #warning cannot be used inside macros.  */
+#ifndef GL_LINK_WARNING
+  /* This works on platforms with GNU ld and ELF object format.
+     Testing __GLIBC__ is sufficient for asserting that GNU ld is in use.
+     Testing __ELF__ guarantees the ELF object format.
+     Testing __GNUC__ is necessary for the compound expression syntax.  */
+# if defined __GLIBC__ && defined __ELF__ && defined __GNUC__
+#  define GL_LINK_WARNING(message) \
+     GL_LINK_WARNING1 (__FILE__, __LINE__, message)
+#  define GL_LINK_WARNING1(file, line, message) \
+     GL_LINK_WARNING2 (file, line, message)  /* macroexpand file and line */
+#  define GL_LINK_WARNING2(file, line, message) \
+     GL_LINK_WARNING3 (file ":" #line ": warning: " message)
+#  define GL_LINK_WARNING3(message) \
+     ({ static const char warning[sizeof (message)]		\
+          __attribute__ ((__unused__,				\
+                          __section__ (".gnu.warning"),		\
+                          __aligned__ (1)))			\
+          = message "\n";					\
+        (void)0;						\
+     })
+# else
+#  define GL_LINK_WARNING(message) ((void) 0)
+# endif
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#if 0
+# if 0
+#  define fprintf rpl_fprintf
+extern int fprintf (FILE *fp, const char *format, ...)
+       __attribute__ ((__format__ (__printf__, 2, 3)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fprintf
+# define fprintf \
+    (GL_LINK_WARNING ("fprintf is not always POSIX compliant - " \
+                      "use gnulib module fprintf-posix for portable " \
+                      "POSIX compliance"), \
+     fprintf)
+#endif
+
+#if 0
+# if 0
+#  define vfprintf rpl_vfprintf
+extern int vfprintf (FILE *fp, const char *format, va_list args)
+       __attribute__ ((__format__ (__printf__, 2, 0)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef vfprintf
+# define vfprintf(s,f,a) \
+    (GL_LINK_WARNING ("vfprintf is not always POSIX compliant - " \
+                      "use gnulib module vfprintf-posix for portable " \
+                      "POSIX compliance"), \
+     vfprintf (s, f, a))
+#endif
+
+#if 0
+# if 0
+/* Don't break __attribute__((format(printf,M,N))).  */
+#  define printf __printf__
+extern int printf (const char *format, ...)
+       __attribute__ ((__format__ (__printf__, 1, 2)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef printf
+# define printf \
+    (GL_LINK_WARNING ("printf is not always POSIX compliant - " \
+                      "use gnulib module printf-posix for portable " \
+                      "POSIX compliance"), \
+     printf)
+/* Don't break __attribute__((format(printf,M,N))).  */
+# define format(kind,m,n) format (__##kind##__, m, n)
+# define __format__(kind,m,n) __format__ (__##kind##__, m, n)
+# define ____printf____ __printf__
+# define ____scanf____ __scanf__
+# define ____strftime____ __strftime__
+# define ____strfmon____ __strfmon__
+#endif
+
+#if 0
+# if 0
+#  define vprintf rpl_vprintf
+extern int vprintf (const char *format, va_list args)
+       __attribute__ ((__format__ (__printf__, 1, 0)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef vprintf
+# define vprintf(f,a) \
+    (GL_LINK_WARNING ("vprintf is not always POSIX compliant - " \
+                      "use gnulib module vprintf-posix for portable " \
+                      "POSIX compliance"), \
+     vprintf (f, a))
+#endif
+
+#if 1
+# if 0
+#  define snprintf rpl_snprintf
+# endif
+# if 0 || !1
+extern int snprintf (char *str, size_t size, const char *format, ...)
+       __attribute__ ((__format__ (__printf__, 3, 4)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef snprintf
+# define snprintf \
+    (GL_LINK_WARNING ("snprintf is unportable - " \
+                      "use gnulib module snprintf for portability"), \
+     snprintf)
+#endif
+
+#if 1
+# if 0
+#  define vsnprintf rpl_vsnprintf
+# endif
+# if 0 || !1
+extern int vsnprintf (char *str, size_t size, const char *format, va_list args)
+       __attribute__ ((__format__ (__printf__, 3, 0)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef vsnprintf
+# define vsnprintf(b,s,f,a) \
+    (GL_LINK_WARNING ("vsnprintf is unportable - " \
+                      "use gnulib module vsnprintf for portability"), \
+     vsnprintf (b, s, f, a))
+#endif
+
+#if 0
+# if 0
+#  define sprintf rpl_sprintf
+extern int sprintf (char *str, const char *format, ...)
+       __attribute__ ((__format__ (__printf__, 2, 3)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef sprintf
+# define sprintf \
+    (GL_LINK_WARNING ("sprintf is not always POSIX compliant - " \
+                      "use gnulib module sprintf-posix for portable " \
+                      "POSIX compliance"), \
+     sprintf)
+#endif
+
+#if 0
+# if 0
+#  define vsprintf rpl_vsprintf
+extern int vsprintf (char *str, const char *format, va_list args)
+       __attribute__ ((__format__ (__printf__, 2, 0)));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef vsprintf
+# define vsprintf(b,f,a) \
+    (GL_LINK_WARNING ("vsprintf is not always POSIX compliant - " \
+                      "use gnulib module vsprintf-posix for portable " \
+                      "POSIX compliance"), \
+     vsprintf (b, f, a))
+#endif
+
+#if 1
+# if 0
+#  define asprintf rpl_asprintf
+#  define vasprintf rpl_vasprintf
+# endif
+# if 0 || !1
+  /* Write formatted output to a string dynamically allocated with malloc().
+     If the memory allocation succeeds, store the address of the string in
+     *RESULT and return the number of resulting bytes, excluding the trailing
+     NUL.  Upon memory allocation error, or some other error, return -1.  */
+  extern int asprintf (char **result, const char *format, ...)
+    __attribute__ ((__format__ (__printf__, 2, 3)));
+  extern int vasprintf (char **result, const char *format, va_list args)
+    __attribute__ ((__format__ (__printf__, 2, 0)));
+# endif
+#endif
+
+#if 0
+# if 0
+#  define fopen rpl_fopen
+extern FILE * fopen (const char *filename, const char *mode);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fopen
+# define fopen(f,m) \
+   (GL_LINK_WARNING ("fopen on Win32 platforms is not POSIX compatible - " \
+                     "use gnulib module fopen for portability"), \
+    fopen (f, m))
+#endif
+
+#if 0
+# if 0
+#  define freopen rpl_freopen
+extern FILE * freopen (const char *filename, const char *mode, FILE *stream);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef freopen
+# define freopen(f,m,s) \
+   (GL_LINK_WARNING ("freopen on Win32 platforms is not POSIX compatible - " \
+                     "use gnulib module freopen for portability"), \
+    freopen (f, m, s))
+#endif
+
+#if 0
+# if 0
+/* Provide fseek, fseeko functions that are aware of a preceding
+   fflush(), and which detect pipes.  */
+#  define fseeko rpl_fseeko
+extern int fseeko (FILE *fp, off_t offset, int whence);
+#  define fseek(fp, offset, whence) fseeko (fp, (off_t)(offset), whence)
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fseeko
+# define fseeko(f,o,w) \
+   (GL_LINK_WARNING ("fseeko is unportable - " \
+                     "use gnulib module fseeko for portability"), \
+    fseeko (f, o, w))
+#endif
+
+#if 0 && 0
+extern int rpl_fseek (FILE *fp, long offset, int whence);
+# undef fseek
+# if defined GNULIB_POSIXCHECK
+#  define fseek(f,o,w) \
+     (GL_LINK_WARNING ("fseek cannot handle files larger than 4 GB " \
+                       "on 32-bit platforms - " \
+                       "use fseeko function for handling of large files"), \
+      rpl_fseek (f, o, w))
+# else
+#  define fseek rpl_fseek
+# endif
+#elif defined GNULIB_POSIXCHECK
+# ifndef fseek
+#  define fseek(f,o,w) \
+     (GL_LINK_WARNING ("fseek cannot handle files larger than 4 GB " \
+                       "on 32-bit platforms - " \
+                       "use fseeko function for handling of large files"), \
+      fseek (f, o, w))
+# endif
+#endif
+
+#if 0
+# if 0
+#  define ftello rpl_ftello
+extern off_t ftello (FILE *fp);
+#  define ftell(fp) ftello (fp)
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ftello
+# define ftello(f) \
+   (GL_LINK_WARNING ("ftello is unportable - " \
+                     "use gnulib module ftello for portability"), \
+    ftello (f))
+#endif
+
+#if 0 && 0
+extern long rpl_ftell (FILE *fp);
+# undef ftell
+# if GNULIB_POSIXCHECK
+#  define ftell(f) \
+     (GL_LINK_WARNING ("ftell cannot handle files larger than 4 GB " \
+                       "on 32-bit platforms - " \
+                       "use ftello function for handling of large files"), \
+      rpl_ftell (f))
+# else
+#  define ftell rpl_ftell
+# endif
+#elif defined GNULIB_POSIXCHECK
+# ifndef ftell
+#  define ftell(f) \
+     (GL_LINK_WARNING ("ftell cannot handle files larger than 4 GB " \
+                       "on 32-bit platforms - " \
+                       "use ftello function for handling of large files"), \
+      ftell (f))
+# endif
+#endif
+
+#if 0
+# if 0
+#  define fflush rpl_fflush
+  /* Flush all pending data on STREAM according to POSIX rules.  Both
+     output and seekable input streams are supported.
+     Note! LOSS OF DATA can occur if fflush is applied on an input stream
+     that is _not_seekable_ or on an update stream that is _not_seekable_
+     and in which the most recent operation was input.  Seekability can
+     be tested with lseek(fileno(fp),0,SEEK_CUR).  */
+  extern int fflush (FILE *gl_stream);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fflush
+# define fflush(f) \
+   (GL_LINK_WARNING ("fflush is not always POSIX compliant - " \
+                     "use gnulib module fflush for portable " \
+                     "POSIX compliance"), \
+    fflush (f))
+#endif
+
+#if 0
+# if !1
+/* Read input, up to (and including) the next occurrence of DELIMITER, from
+   STREAM, store it in *LINEPTR (and NUL-terminate it).
+   *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
+   bytes of space.  It is realloc'd as necessary.
+   Return the number of bytes read and stored at *LINEPTR (not including the
+   NUL terminator), or -1 on error or EOF.  */
+extern ssize_t getdelim (char **lineptr, size_t *linesize, int delimiter,
+			 FILE *stream);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getdelim
+# define getdelim(l, s, d, f)					    \
+  (GL_LINK_WARNING ("getdelim is unportable - "			    \
+		    "use gnulib module getdelim for portability"),  \
+   getdelim (l, s, d, f))
+#endif
+
+#if 0
+# if 0
+#  undef getline
+#  define getline rpl_getline
+# endif
+# if !1 || 0
+/* Read a line, up to (and including) the next newline, from STREAM, store it
+   in *LINEPTR (and NUL-terminate it).
+   *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
+   bytes of space.  It is realloc'd as necessary.
+   Return the number of bytes read and stored at *LINEPTR (not including the
+   NUL terminator), or -1 on error or EOF.  */
+extern ssize_t getline (char **lineptr, size_t *linesize, FILE *stream);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getline
+# define getline(l, s, f)						\
+  (GL_LINK_WARNING ("getline is unportable - "				\
+		    "use gnulib module getline for portability"),	\
+   getline (l, s, f))
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GL_STDIO_H */
+#endif /* _GL_STDIO_H */
+#endif
diff --git a/gl/stdlib.h b/gl/stdlib.h
new file mode 100644
index 00000000..86da899f
--- /dev/null
+++ b/gl/stdlib.h
@@ -0,0 +1,237 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* A GNU-like <stdlib.h>.
+
+   Copyright (C) 1995, 2001-2004, 2006-2007 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#if defined __need_malloc_and_calloc
+/* Special invocation convention inside glibc header files.  */
+
+#include_next <stdlib.h>
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _GL_STDLIB_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#include_next <stdlib.h>
+
+#ifndef _GL_STDLIB_H
+#define _GL_STDLIB_H
+
+
+/* The definition of GL_LINK_WARNING is copied here.  */
+/* GL_LINK_WARNING("literal string") arranges to emit the literal string as
+   a linker warning on most glibc systems.
+   We use a linker warning rather than a preprocessor warning, because
+   #warning cannot be used inside macros.  */
+#ifndef GL_LINK_WARNING
+  /* This works on platforms with GNU ld and ELF object format.
+     Testing __GLIBC__ is sufficient for asserting that GNU ld is in use.
+     Testing __ELF__ guarantees the ELF object format.
+     Testing __GNUC__ is necessary for the compound expression syntax.  */
+# if defined __GLIBC__ && defined __ELF__ && defined __GNUC__
+#  define GL_LINK_WARNING(message) \
+     GL_LINK_WARNING1 (__FILE__, __LINE__, message)
+#  define GL_LINK_WARNING1(file, line, message) \
+     GL_LINK_WARNING2 (file, line, message)  /* macroexpand file and line */
+#  define GL_LINK_WARNING2(file, line, message) \
+     GL_LINK_WARNING3 (file ":" #line ": warning: " message)
+#  define GL_LINK_WARNING3(message) \
+     ({ static const char warning[sizeof (message)]		\
+          __attribute__ ((__unused__,				\
+                          __section__ (".gnu.warning"),		\
+                          __aligned__ (1)))			\
+          = message "\n";					\
+        (void)0;						\
+     })
+# else
+#  define GL_LINK_WARNING(message) ((void) 0)
+# endif
+#endif
+
+
+/* Some systems do not define EXIT_*, despite otherwise supporting C89.  */
+#ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+#endif
+/* Tandem/NSK and other platforms that define EXIT_FAILURE as -1 interfere
+   with proper operation of xargs.  */
+#ifndef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#elif EXIT_FAILURE != 1
+# undef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#if 1
+# if !1
+#  undef malloc
+#  define malloc rpl_malloc
+extern void * malloc (size_t size);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef malloc
+# define malloc(s) \
+    (GL_LINK_WARNING ("malloc is not POSIX compliant everywhere - " \
+                      "use gnulib module malloc-posix for portability"), \
+     malloc (s))
+#endif
+
+
+#if 0
+# if !1
+#  undef realloc
+#  define realloc rpl_realloc
+extern void * realloc (void *ptr, size_t size);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef realloc
+# define realloc(p,s) \
+    (GL_LINK_WARNING ("realloc is not POSIX compliant everywhere - " \
+                      "use gnulib module realloc-posix for portability"), \
+     realloc (p, s))
+#endif
+
+
+#if 0
+# if !1
+#  undef calloc
+#  define calloc rpl_calloc
+extern void * calloc (size_t nmemb, size_t size);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef calloc
+# define calloc(n,s) \
+    (GL_LINK_WARNING ("calloc is not POSIX compliant everywhere - " \
+                      "use gnulib module calloc-posix for portability"), \
+     calloc (n, s))
+#endif
+
+
+#if 0
+/* Assuming *OPTIONP is a comma separated list of elements of the form
+   "token" or "token=value", getsubopt parses the first of these elements.
+   If the first element refers to a "token" that is member of the given
+   NULL-terminated array of tokens:
+     - It replaces the comma with a NUL byte, updates *OPTIONP to point past
+       the first option and the comma, sets *VALUEP to the value of the
+       element (or NULL if it doesn't contain an "=" sign),
+     - It returns the index of the "token" in the given array of tokens.
+   Otherwise it returns -1, and *OPTIONP and *VALUEP are undefined.
+   For more details see the POSIX:2001 specification.
+   http://www.opengroup.org/susv3xsh/getsubopt.html */
+# if !1
+extern int getsubopt (char **optionp, char *const *tokens, char **valuep);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getsubopt
+# define getsubopt(o,t,v) \
+    (GL_LINK_WARNING ("getsubopt is unportable - " \
+                      "use gnulib module getsubopt for portability"), \
+     getsubopt (o, t, v))
+#endif
+
+
+#if 0
+# if !1
+/* Create a unique temporary directory from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the directory name unique.
+   Returns TEMPLATE, or a null pointer if it cannot get a unique name.
+   The directory is created mode 700.  */
+extern char * mkdtemp (char * /*template*/);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mkdtemp
+# define mkdtemp(t) \
+    (GL_LINK_WARNING ("mkdtemp is unportable - " \
+                      "use gnulib module mkdtemp for portability"), \
+     mkdtemp (t))
+#endif
+
+
+#if 0
+# if 0
+/* Create a unique temporary file from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   The file is then created, ensuring it didn't exist before.
+   The file is created read-write (mask at least 0600 & ~umask), but it may be
+   world-readable and world-writable (mask 0666 & ~umask), depending on the
+   implementation.
+   Returns the open file descriptor if successful, otherwise -1 and errno
+   set.  */
+#  define mkstemp rpl_mkstemp
+extern int mkstemp (char * /*template*/);
+# else
+/* On MacOS X 10.3, only <unistd.h> declares mkstemp.  */
+#  include <unistd.h>
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mkstemp
+# define mkstemp(t) \
+    (GL_LINK_WARNING ("mkstemp is unportable - " \
+                      "use gnulib module mkstemp for portability"), \
+     mkstemp (t))
+#endif
+
+
+#if 0
+# if 0
+#  undef putenv
+#  define putenv rpl_putenv
+extern int putenv (char *string);
+# endif
+#endif
+
+
+#if 0
+# if !1
+/* Set NAME to VALUE in the environment.
+   If REPLACE is nonzero, overwrite an existing value.  */
+extern int setenv (const char *name, const char *value, int replace);
+# endif
+#endif
+
+
+#if 0
+# if 1
+#  if 0
+/* On some systems, unsetenv() returns void.
+   This is the case for MacOS X 10.3, FreeBSD 4.8, NetBSD 1.6, OpenBSD 3.4.  */
+#   define unsetenv(name) ((unsetenv)(name), 0)
+#  endif
+# else
+/* Remove the variable NAME from the environment.  */
+extern int unsetenv (const char *name);
+# endif
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GL_STDLIB_H */
+#endif /* _GL_STDLIB_H */
+#endif
diff --git a/gl/string.h b/gl/string.h
new file mode 100644
index 00000000..e5bcef55
--- /dev/null
+++ b/gl/string.h
@@ -0,0 +1,598 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* A GNU-like <string.h>.
+
+   Copyright (C) 1995-1996, 2001-2008 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef _GL_STRING_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#include_next <string.h>
+
+#ifndef _GL_STRING_H
+#define _GL_STRING_H
+
+
+#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
+#  define __attribute__(Spec) /* empty */
+# endif
+/* The attribute __pure__ was added in gcc 2.96.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
+#  define __pure__ /* empty */
+# endif
+#endif
+
+
+/* The definition of GL_LINK_WARNING is copied here.  */
+/* GL_LINK_WARNING("literal string") arranges to emit the literal string as
+   a linker warning on most glibc systems.
+   We use a linker warning rather than a preprocessor warning, because
+   #warning cannot be used inside macros.  */
+#ifndef GL_LINK_WARNING
+  /* This works on platforms with GNU ld and ELF object format.
+     Testing __GLIBC__ is sufficient for asserting that GNU ld is in use.
+     Testing __ELF__ guarantees the ELF object format.
+     Testing __GNUC__ is necessary for the compound expression syntax.  */
+# if defined __GLIBC__ && defined __ELF__ && defined __GNUC__
+#  define GL_LINK_WARNING(message) \
+     GL_LINK_WARNING1 (__FILE__, __LINE__, message)
+#  define GL_LINK_WARNING1(file, line, message) \
+     GL_LINK_WARNING2 (file, line, message)  /* macroexpand file and line */
+#  define GL_LINK_WARNING2(file, line, message) \
+     GL_LINK_WARNING3 (file ":" #line ": warning: " message)
+#  define GL_LINK_WARNING3(message) \
+     ({ static const char warning[sizeof (message)]		\
+          __attribute__ ((__unused__,				\
+                          __section__ (".gnu.warning"),		\
+                          __aligned__ (1)))			\
+          = message "\n";					\
+        (void)0;						\
+     })
+# else
+#  define GL_LINK_WARNING(message) ((void) 0)
+# endif
+#endif
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Return the first occurrence of NEEDLE in HAYSTACK.  */
+#if 0
+# if 0
+#  define memmem rpl_memmem
+# endif
+# if ! 1 || 0
+extern void *memmem (void const *__haystack, size_t __haystack_len,
+		     void const *__needle, size_t __needle_len)
+  __attribute__ ((__pure__));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef memmem
+# define memmem(a,al,b,bl) \
+    (GL_LINK_WARNING ("memmem is unportable and often quadratic - " \
+                      "use gnulib module memmem-simple for portability, " \
+                      "and module memmem for speed" ), \
+     memmem (a, al, b, bl))
+#endif
+
+/* Copy N bytes of SRC to DEST, return pointer to bytes after the
+   last written byte.  */
+#if 0
+# if ! 1
+extern void *mempcpy (void *restrict __dest, void const *restrict __src,
+		      size_t __n);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mempcpy
+# define mempcpy(a,b,n) \
+    (GL_LINK_WARNING ("mempcpy is unportable - " \
+                      "use gnulib module mempcpy for portability"), \
+     mempcpy (a, b, n))
+#endif
+
+/* Search backwards through a block for a byte (specified as an int).  */
+#if 0
+# if ! 1
+extern void *memrchr (void const *, int, size_t)
+  __attribute__ ((__pure__));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef memrchr
+# define memrchr(a,b,c) \
+    (GL_LINK_WARNING ("memrchr is unportable - " \
+                      "use gnulib module memrchr for portability"), \
+     memrchr (a, b, c))
+#endif
+
+/* Copy SRC to DST, returning the address of the terminating '\0' in DST.  */
+#if 0
+# if ! 1
+extern char *stpcpy (char *restrict __dst, char const *restrict __src);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef stpcpy
+# define stpcpy(a,b) \
+    (GL_LINK_WARNING ("stpcpy is unportable - " \
+                      "use gnulib module stpcpy for portability"), \
+     stpcpy (a, b))
+#endif
+
+/* Copy no more than N bytes of SRC to DST, returning a pointer past the
+   last non-NUL byte written into DST.  */
+#if 0
+# if ! 1
+#  define stpncpy gnu_stpncpy
+extern char *stpncpy (char *restrict __dst, char const *restrict __src,
+		      size_t __n);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef stpncpy
+# define stpncpy(a,b,n) \
+    (GL_LINK_WARNING ("stpncpy is unportable - " \
+                      "use gnulib module stpncpy for portability"), \
+     stpncpy (a, b, n))
+#endif
+
+#if defined GNULIB_POSIXCHECK
+/* strchr() does not work with multibyte strings if the locale encoding is
+   GB18030 and the character to be searched is a digit.  */
+# undef strchr
+# define strchr(s,c) \
+    (GL_LINK_WARNING ("strchr cannot work correctly on character strings " \
+                      "in some multibyte locales - " \
+                      "use mbschr if you care about internationalization"), \
+     strchr (s, c))
+#endif
+
+/* Find the first occurrence of C in S or the final NUL byte.  */
+#if 0
+# if ! 1
+extern char *strchrnul (char const *__s, int __c_in)
+  __attribute__ ((__pure__));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strchrnul
+# define strchrnul(a,b) \
+    (GL_LINK_WARNING ("strchrnul is unportable - " \
+                      "use gnulib module strchrnul for portability"), \
+     strchrnul (a, b))
+#endif
+
+/* Duplicate S, returning an identical malloc'd string.  */
+#if 1
+# if ! 1 && ! defined strdup
+extern char *strdup (char const *__s);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strdup
+# define strdup(a) \
+    (GL_LINK_WARNING ("strdup is unportable - " \
+                      "use gnulib module strdup for portability"), \
+     strdup (a))
+#endif
+
+/* Return a newly allocated copy of at most N bytes of STRING.  */
+#if 1
+# if ! 1
+#  undef strndup
+#  define strndup rpl_strndup
+# endif
+# if ! 1 || ! 1
+extern char *strndup (char const *__string, size_t __n);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strndup
+# define strndup(a,n) \
+    (GL_LINK_WARNING ("strndup is unportable - " \
+                      "use gnulib module strndup for portability"), \
+     strndup (a, n))
+#endif
+
+/* Find the length (number of bytes) of STRING, but scan at most
+   MAXLEN bytes.  If no '\0' terminator is found in that many bytes,
+   return MAXLEN.  */
+#if 1
+# if ! 1
+extern size_t strnlen (char const *__string, size_t __maxlen)
+  __attribute__ ((__pure__));
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strnlen
+# define strnlen(a,n) \
+    (GL_LINK_WARNING ("strnlen is unportable - " \
+                      "use gnulib module strnlen for portability"), \
+     strnlen (a, n))
+#endif
+
+#if defined GNULIB_POSIXCHECK
+/* strcspn() assumes the second argument is a list of single-byte characters.
+   Even in this simple case, it does not work with multibyte strings if the
+   locale encoding is GB18030 and one of the characters to be searched is a
+   digit.  */
+# undef strcspn
+# define strcspn(s,a) \
+    (GL_LINK_WARNING ("strcspn cannot work correctly on character strings " \
+                      "in multibyte locales - " \
+                      "use mbscspn if you care about internationalization"), \
+     strcspn (s, a))
+#endif
+
+/* Find the first occurrence in S of any character in ACCEPT.  */
+#if 0
+# if ! 1
+extern char *strpbrk (char const *__s, char const *__accept)
+  __attribute__ ((__pure__));
+# endif
+# if defined GNULIB_POSIXCHECK
+/* strpbrk() assumes the second argument is a list of single-byte characters.
+   Even in this simple case, it does not work with multibyte strings if the
+   locale encoding is GB18030 and one of the characters to be searched is a
+   digit.  */
+#  undef strpbrk
+#  define strpbrk(s,a) \
+     (GL_LINK_WARNING ("strpbrk cannot work correctly on character strings " \
+                       "in multibyte locales - " \
+                       "use mbspbrk if you care about internationalization"), \
+      strpbrk (s, a))
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strpbrk
+# define strpbrk(s,a) \
+    (GL_LINK_WARNING ("strpbrk is unportable - " \
+                      "use gnulib module strpbrk for portability"), \
+     strpbrk (s, a))
+#endif
+
+#if defined GNULIB_POSIXCHECK
+/* strspn() assumes the second argument is a list of single-byte characters.
+   Even in this simple case, it cannot work with multibyte strings.  */
+# undef strspn
+# define strspn(s,a) \
+    (GL_LINK_WARNING ("strspn cannot work correctly on character strings " \
+                      "in multibyte locales - " \
+                      "use mbsspn if you care about internationalization"), \
+     strspn (s, a))
+#endif
+
+#if defined GNULIB_POSIXCHECK
+/* strrchr() does not work with multibyte strings if the locale encoding is
+   GB18030 and the character to be searched is a digit.  */
+# undef strrchr
+# define strrchr(s,c) \
+    (GL_LINK_WARNING ("strrchr cannot work correctly on character strings " \
+                      "in some multibyte locales - " \
+                      "use mbsrchr if you care about internationalization"), \
+     strrchr (s, c))
+#endif
+
+/* Search the next delimiter (char listed in DELIM) starting at *STRINGP.
+   If one is found, overwrite it with a NUL, and advance *STRINGP
+   to point to the next char after it.  Otherwise, set *STRINGP to NULL.
+   If *STRINGP was already NULL, nothing happens.
+   Return the old value of *STRINGP.
+
+   This is a variant of strtok() that is multithread-safe and supports
+   empty fields.
+
+   Caveat: It modifies the original string.
+   Caveat: These functions cannot be used on constant strings.
+   Caveat: The identity of the delimiting character is lost.
+   Caveat: It doesn't work with multibyte strings unless all of the delimiter
+           characters are ASCII characters < 0x30.
+
+   See also strtok_r().  */
+#if 0
+# if ! 1
+extern char *strsep (char **restrict __stringp, char const *restrict __delim);
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef strsep
+#  define strsep(s,d) \
+     (GL_LINK_WARNING ("strsep cannot work correctly on character strings " \
+                       "in multibyte locales - " \
+                       "use mbssep if you care about internationalization"), \
+      strsep (s, d))
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strsep
+# define strsep(s,d) \
+    (GL_LINK_WARNING ("strsep is unportable - " \
+                      "use gnulib module strsep for portability"), \
+     strsep (s, d))
+#endif
+
+#if 0
+# if 0
+#  define strstr rpl_strstr
+char *strstr (const char *haystack, const char *needle)
+  __attribute__ ((__pure__));
+# endif
+#elif defined GNULIB_POSIXCHECK
+/* strstr() does not work with multibyte strings if the locale encoding is
+   different from UTF-8:
+   POSIX says that it operates on "strings", and "string" in POSIX is defined
+   as a sequence of bytes, not of characters.  */
+# undef strstr
+# define strstr(a,b) \
+    (GL_LINK_WARNING ("strstr is quadratic on many systems, and cannot " \
+                      "work correctly on character strings in most "    \
+                      "multibyte locales - " \
+                      "use mbsstr if you care about internationalization, " \
+                      "or use strstr if you care about speed"), \
+     strstr (a, b))
+#endif
+
+/* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive
+   comparison.  */
+#if 0
+# if 0
+#  define strcasestr rpl_strcasestr
+# endif
+# if ! 1 || 0
+extern char *strcasestr (const char *haystack, const char *needle)
+  __attribute__ ((__pure__));
+# endif
+#elif defined GNULIB_POSIXCHECK
+/* strcasestr() does not work with multibyte strings:
+   It is a glibc extension, and glibc implements it only for unibyte
+   locales.  */
+# undef strcasestr
+# define strcasestr(a,b) \
+    (GL_LINK_WARNING ("strcasestr does work correctly on character strings " \
+                      "in multibyte locales - " \
+                      "use mbscasestr if you care about " \
+                      "internationalization, or use c-strcasestr if you want " \
+                      "a locale independent function"), \
+     strcasestr (a, b))
+#endif
+
+/* Parse S into tokens separated by characters in DELIM.
+   If S is NULL, the saved pointer in SAVE_PTR is used as
+   the next starting point.  For example:
+	char s[] = "-abc-=-def";
+	char *sp;
+	x = strtok_r(s, "-", &sp);	// x = "abc", sp = "=-def"
+	x = strtok_r(NULL, "-=", &sp);	// x = "def", sp = NULL
+	x = strtok_r(NULL, "=", &sp);	// x = NULL
+		// s = "abc\0-def\0"
+
+   This is a variant of strtok() that is multithread-safe.
+
+   For the POSIX documentation for this function, see:
+   http://www.opengroup.org/susv3xsh/strtok.html
+
+   Caveat: It modifies the original string.
+   Caveat: These functions cannot be used on constant strings.
+   Caveat: The identity of the delimiting character is lost.
+   Caveat: It doesn't work with multibyte strings unless all of the delimiter
+           characters are ASCII characters < 0x30.
+
+   See also strsep().  */
+#if 0
+# if ! 1
+extern char *strtok_r (char *restrict s, char const *restrict delim,
+		       char **restrict save_ptr);
+# endif
+# if defined GNULIB_POSIXCHECK
+#  undef strtok_r
+#  define strtok_r(s,d,p) \
+     (GL_LINK_WARNING ("strtok_r cannot work correctly on character strings " \
+                       "in multibyte locales - " \
+                       "use mbstok_r if you care about internationalization"), \
+      strtok_r (s, d, p))
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strtok_r
+# define strtok_r(s,d,p) \
+    (GL_LINK_WARNING ("strtok_r is unportable - " \
+                      "use gnulib module strtok_r for portability"), \
+     strtok_r (s, d, p))
+#endif
+
+
+/* The following functions are not specified by POSIX.  They are gnulib
+   extensions.  */
+
+#if 0
+/* Return the number of multibyte characters in the character string STRING.
+   This considers multibyte characters, unlike strlen, which counts bytes.  */
+extern size_t mbslen (const char *string);
+#endif
+
+#if 0
+/* Return the number of multibyte characters in the character string starting
+   at STRING and ending at STRING + LEN.  */
+extern size_t mbsnlen (const char *string, size_t len);
+#endif
+
+#if 0
+/* Locate the first single-byte character C in the character string STRING,
+   and return a pointer to it.  Return NULL if C is not found in STRING.
+   Unlike strchr(), this function works correctly in multibyte locales with
+   encodings such as GB18030.  */
+# define mbschr rpl_mbschr /* avoid collision with HP-UX function */
+extern char * mbschr (const char *string, int c);
+#endif
+
+#if 0
+/* Locate the last single-byte character C in the character string STRING,
+   and return a pointer to it.  Return NULL if C is not found in STRING.
+   Unlike strrchr(), this function works correctly in multibyte locales with
+   encodings such as GB18030.  */
+# define mbsrchr rpl_mbsrchr /* avoid collision with HP-UX function */
+extern char * mbsrchr (const char *string, int c);
+#endif
+
+#if 0
+/* Find the first occurrence of the character string NEEDLE in the character
+   string HAYSTACK.  Return NULL if NEEDLE is not found in HAYSTACK.
+   Unlike strstr(), this function works correctly in multibyte locales with
+   encodings different from UTF-8.  */
+extern char * mbsstr (const char *haystack, const char *needle);
+#endif
+
+#if 0
+/* Compare the character strings S1 and S2, ignoring case, returning less than,
+   equal to or greater than zero if S1 is lexicographically less than, equal to
+   or greater than S2.
+   Note: This function may, in multibyte locales, return 0 for strings of
+   different lengths!
+   Unlike strcasecmp(), this function works correctly in multibyte locales.  */
+extern int mbscasecmp (const char *s1, const char *s2);
+#endif
+
+#if 0
+/* Compare the initial segment of the character string S1 consisting of at most
+   N characters with the initial segment of the character string S2 consisting
+   of at most N characters, ignoring case, returning less than, equal to or
+   greater than zero if the initial segment of S1 is lexicographically less
+   than, equal to or greater than the initial segment of S2.
+   Note: This function may, in multibyte locales, return 0 for initial segments
+   of different lengths!
+   Unlike strncasecmp(), this function works correctly in multibyte locales.
+   But beware that N is not a byte count but a character count!  */
+extern int mbsncasecmp (const char *s1, const char *s2, size_t n);
+#endif
+
+#if 0
+/* Compare the initial segment of the character string STRING consisting of
+   at most mbslen (PREFIX) characters with the character string PREFIX,
+   ignoring case, returning less than, equal to or greater than zero if this
+   initial segment is lexicographically less than, equal to or greater than
+   PREFIX.
+   Note: This function may, in multibyte locales, return 0 if STRING is of
+   smaller length than PREFIX!
+   Unlike strncasecmp(), this function works correctly in multibyte
+   locales.  */
+extern char * mbspcasecmp (const char *string, const char *prefix);
+#endif
+
+#if 0
+/* Find the first occurrence of the character string NEEDLE in the character
+   string HAYSTACK, using case-insensitive comparison.
+   Note: This function may, in multibyte locales, return success even if
+   strlen (haystack) < strlen (needle) !
+   Unlike strcasestr(), this function works correctly in multibyte locales.  */
+extern char * mbscasestr (const char *haystack, const char *needle);
+#endif
+
+#if 0
+/* Find the first occurrence in the character string STRING of any character
+   in the character string ACCEPT.  Return the number of bytes from the
+   beginning of the string to this occurrence, or to the end of the string
+   if none exists.
+   Unlike strcspn(), this function works correctly in multibyte locales.  */
+extern size_t mbscspn (const char *string, const char *accept);
+#endif
+
+#if 0
+/* Find the first occurrence in the character string STRING of any character
+   in the character string ACCEPT.  Return the pointer to it, or NULL if none
+   exists.
+   Unlike strpbrk(), this function works correctly in multibyte locales.  */
+# define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */
+extern char * mbspbrk (const char *string, const char *accept);
+#endif
+
+#if 0
+/* Find the first occurrence in the character string STRING of any character
+   not in the character string REJECT.  Return the number of bytes from the
+   beginning of the string to this occurrence, or to the end of the string
+   if none exists.
+   Unlike strspn(), this function works correctly in multibyte locales.  */
+extern size_t mbsspn (const char *string, const char *reject);
+#endif
+
+#if 0
+/* Search the next delimiter (multibyte character listed in the character
+   string DELIM) starting at the character string *STRINGP.
+   If one is found, overwrite it with a NUL, and advance *STRINGP to point
+   to the next multibyte character after it.  Otherwise, set *STRINGP to NULL.
+   If *STRINGP was already NULL, nothing happens.
+   Return the old value of *STRINGP.
+
+   This is a variant of mbstok_r() that supports empty fields.
+
+   Caveat: It modifies the original string.
+   Caveat: These functions cannot be used on constant strings.
+   Caveat: The identity of the delimiting character is lost.
+
+   See also mbstok_r().  */
+extern char * mbssep (char **stringp, const char *delim);
+#endif
+
+#if 0
+/* Parse the character string STRING into tokens separated by characters in
+   the character string DELIM.
+   If STRING is NULL, the saved pointer in SAVE_PTR is used as
+   the next starting point.  For example:
+	char s[] = "-abc-=-def";
+	char *sp;
+	x = mbstok_r(s, "-", &sp);	// x = "abc", sp = "=-def"
+	x = mbstok_r(NULL, "-=", &sp);	// x = "def", sp = NULL
+	x = mbstok_r(NULL, "=", &sp);	// x = NULL
+		// s = "abc\0-def\0"
+
+   Caveat: It modifies the original string.
+   Caveat: These functions cannot be used on constant strings.
+   Caveat: The identity of the delimiting character is lost.
+
+   See also mbssep().  */
+extern char * mbstok_r (char *string, const char *delim, char **save_ptr);
+#endif
+
+/* Map any int, typically from errno, into an error message.  */
+#if 1
+# if 0
+#  undef strerror
+#  define strerror rpl_strerror
+extern char *strerror (int);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strerror
+# define strerror(e) \
+    (GL_LINK_WARNING ("strerror is unportable - " \
+                      "use gnulib module strerror to guarantee non-NULL result"), \
+     strerror (e))
+#endif
+
+#if 0
+# if 0
+#  define strsignal rpl_strsignal
+# endif
+# if ! 1 || 0
+extern char *strsignal (int __sig);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef strsignal
+# define strsignal(a) \
+    (GL_LINK_WARNING ("strsignal is unportable - " \
+                      "use gnulib module strsignal for portability"), \
+     strsignal (a))
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GL_STRING_H */
+#endif /* _GL_STRING_H */
diff --git a/gl/unistd.h b/gl/unistd.h
new file mode 100644
index 00000000..e72a5d9a
--- /dev/null
+++ b/gl/unistd.h
@@ -0,0 +1,321 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* Substitute for and wrapper around <unistd.h>.
+   Copyright (C) 2004-2007 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef _GL_UNISTD_H
+
+/* The include_next requires a split double-inclusion guard.  */
+#if 1
+# include_next <unistd.h>
+#endif
+
+#ifndef _GL_UNISTD_H
+#define _GL_UNISTD_H
+
+/* mingw doesn't define the SEEK_* macros in <unistd.h>.  */
+#if !(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET)
+# include <stdio.h>
+#endif
+
+/* mingw fails to declare _exit in <unistd.h>.  */
+#include <stdlib.h>
+
+/* The definition of GL_LINK_WARNING is copied here.  */
+
+
+/* Declare overridden functions.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#if 0
+# if 0
+#  ifndef REPLACE_CHOWN
+#   define REPLACE_CHOWN 1
+#  endif
+#  if REPLACE_CHOWN
+/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
+   to GID (if GID is not -1).  Follow symbolic links.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/chown.html>.  */
+#   define chown rpl_chown
+extern int chown (const char *file, uid_t uid, gid_t gid);
+#  endif
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef chown
+# define chown(f,u,g) \
+    (GL_LINK_WARNING ("chown fails to follow symlinks on some systems and " \
+                      "doesn't treat a uid or gid of -1 on some systems - " \
+                      "use gnulib module chown for portability"), \
+     chown (f, u, g))
+#endif
+
+
+#if 0
+# if !1
+/* Copy the file descriptor OLDFD into file descriptor NEWFD.  Do nothing if
+   NEWFD = OLDFD, otherwise close NEWFD first if it is open.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/dup2.html>.  */
+extern int dup2 (int oldfd, int newfd);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef dup2
+# define dup2(o,n) \
+    (GL_LINK_WARNING ("dup2 is unportable - " \
+                      "use gnulib module dup2 for portability"), \
+     dup2 (o, n))
+#endif
+
+
+#if 0
+# if 0
+
+/* Change the process' current working directory to the directory on which
+   the given file descriptor is open.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/fchdir.html>.  */
+extern int fchdir (int /*fd*/);
+
+#  define close rpl_close
+extern int close (int);
+#  define dup rpl_dup
+extern int dup (int);
+#  define dup2 rpl_dup2
+extern int dup2 (int, int);
+
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fchdir
+# define fchdir(f) \
+    (GL_LINK_WARNING ("fchdir is unportable - " \
+                      "use gnulib module fchdir for portability"), \
+     fchdir (f))
+#endif
+
+
+#if 0
+# if !1
+/* Change the size of the file to which FD is opened to become equal to LENGTH.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/ftruncate.html>.  */
+extern int ftruncate (int fd, off_t length);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef ftruncate
+# define ftruncate(f,l) \
+    (GL_LINK_WARNING ("ftruncate is unportable - " \
+                      "use gnulib module ftruncate for portability"), \
+     ftruncate (f, l))
+#endif
+
+
+#if 0
+/* Include the headers that might declare getcwd so that they will not
+   cause confusion if included after this file.  */
+# include <stdlib.h>
+# if 0
+/* Get the name of the current working directory, and put it in SIZE bytes
+   of BUF.
+   Return BUF if successful, or NULL if the directory couldn't be determined
+   or SIZE was too small.
+   See the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/getcwd.html>.
+   Additionally, the gnulib module 'getcwd' guarantees the following GNU
+   extension: If BUF is NULL, an array is allocated with 'malloc'; the array
+   is SIZE bytes long, unless SIZE == 0, in which case it is as big as
+   necessary.  */
+#  define getcwd rpl_getcwd
+extern char * getcwd (char *buf, size_t size);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getcwd
+# define getcwd(b,s) \
+    (GL_LINK_WARNING ("getcwd is unportable - " \
+                      "use gnulib module getcwd for portability"), \
+     getcwd (b, s))
+#endif
+
+
+#if 0
+/* Copies the user's login name to NAME.
+   The array pointed to by NAME has room for SIZE bytes.
+
+   Returns 0 if successful.  Upon error, an error number is returned, or -1 in
+   the case that the login name cannot be found but no specific error is
+   provided (this case is hopefully rare but is left open by the POSIX spec).
+
+   See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+ */
+# if !1
+#  include <stddef.h>
+extern int getlogin_r (char *name, size_t size);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getlogin_r
+# define getlogin_r(n,s) \
+    (GL_LINK_WARNING ("getlogin_r is unportable - " \
+                      "use gnulib module getlogin_r for portability"), \
+     getlogin_r (n, s))
+#endif
+
+
+#if 0
+# if 0
+#  define getpagesize rpl_getpagesize
+extern int getpagesize (void);
+# elif !1
+/* This is for POSIX systems.  */
+#  if !defined getpagesize && defined _SC_PAGESIZE
+#   if ! (defined __VMS && __VMS_VER < 70000000)
+#    define getpagesize() sysconf (_SC_PAGESIZE)
+#   endif
+#  endif
+/* This is for older VMS.  */
+#  if !defined getpagesize && defined __VMS
+#   ifdef __ALPHA
+#    define getpagesize() 8192
+#   else
+#    define getpagesize() 512
+#   endif
+#  endif
+/* This is for BeOS.  */
+#  if !defined getpagesize && 0
+#   include <OS.h>
+#   if defined B_PAGE_SIZE
+#    define getpagesize() B_PAGE_SIZE
+#   endif
+#  endif
+/* This is for AmigaOS4.0.  */
+#  if !defined getpagesize && defined __amigaos4__
+#   define getpagesize() 2048
+#  endif
+/* This is for older Unix systems.  */
+#  if !defined getpagesize && 0
+#   include <sys/param.h>
+#   ifdef EXEC_PAGESIZE
+#    define getpagesize() EXEC_PAGESIZE
+#   else
+#    ifdef NBPG
+#     ifndef CLSIZE
+#      define CLSIZE 1
+#     endif
+#     define getpagesize() (NBPG * CLSIZE)
+#    else
+#     ifdef NBPC
+#      define getpagesize() NBPC
+#     endif
+#    endif
+#   endif
+#  endif
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getpagesize
+# define getpagesize() \
+    (GL_LINK_WARNING ("getpagesize is unportable - " \
+                      "use gnulib module getpagesize for portability"), \
+     getpagesize ())
+#endif
+
+
+#if 0
+# if 0
+/* Change the owner of FILE to UID (if UID is not -1) and the group of FILE
+   to GID (if GID is not -1).  Do not follow symbolic links.
+   Return 0 if successful, otherwise -1 and errno set.
+   See the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/lchown.html>.  */
+#  define lchown rpl_lchown
+extern int lchown (char const *file, uid_t owner, gid_t group);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef lchown
+# define lchown(f,u,g) \
+    (GL_LINK_WARNING ("lchown is unportable to pre-POSIX.1-2001 " \
+                      "systems - use gnulib module lchown for portability"), \
+     lchown (f, u, g))
+#endif
+
+
+#if 0
+# if 0
+/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
+   Return the new offset if successful, otherwise -1 and errno set.
+   See the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/lseek.html>.  */
+#  define lseek rpl_lseek
+   extern off_t lseek (int fd, off_t offset, int whence);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef lseek
+# define lseek(f,o,w) \
+    (GL_LINK_WARNING ("lseek does not fail with ESPIPE on pipes on some " \
+                      "systems - use gnulib module lseek for portability"), \
+     lseek (f, o, w))
+#endif
+
+
+#if 0
+/* Read the contents of the symbolic link FILE and place the first BUFSIZE
+   bytes of it into BUF.  Return the number of bytes placed into BUF if
+   successful, otherwise -1 and errno set.
+   See the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/readlink.html>.  */
+# if !1
+#  include <stddef.h>
+extern int readlink (const char *file, char *buf, size_t bufsize);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef readlink
+# define readlink(f,b,s) \
+    (GL_LINK_WARNING ("readlink is unportable - " \
+                      "use gnulib module readlink for portability"), \
+     readlink (f, b, s))
+#endif
+
+
+#if 0
+/* Pause the execution of the current thread for N seconds.
+   Returns the number of seconds left to sleep.
+   See the POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/sleep.html>.  */
+# if !1
+extern unsigned int sleep (unsigned int n);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef sleep
+# define sleep(n) \
+    (GL_LINK_WARNING ("sleep is unportable - " \
+                      "use gnulib module sleep for portability"), \
+     sleep (n))
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _GL_UNISTD_H */
+#endif /* _GL_UNISTD_H */