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-rw-r--r--m4/.cvsignore1
-rw-r--r--m4/np_coreutils.m41
-rw-r--r--m4/regex.m4187
-rw-r--r--m4/restrict.m438
4 files changed, 227 insertions, 0 deletions
diff --git a/m4/.cvsignore b/m4/.cvsignore
index 282522db..a324157c 100644
--- a/m4/.cvsignore
+++ b/m4/.cvsignore
@@ -1,2 +1,3 @@
Makefile
Makefile.in
+Makefile.am
diff --git a/m4/np_coreutils.m4 b/m4/np_coreutils.m4
index e6627a2b..44aa3b80 100644
--- a/m4/np_coreutils.m4
+++ b/m4/np_coreutils.m4
@@ -18,4 +18,5 @@ AC_DEFUN([np_COREUTILS],
AC_REQUIRE([gl_MOUNTLIST])
AC_REQUIRE([gl_FSUSAGE])
AC_REQUIRE([gl_FUNC_GLIBC_UNLOCKED_IO])
+ AC_REQUIRE([gl_REGEX])
])
diff --git a/m4/regex.m4 b/m4/regex.m4
new file mode 100644
index 00000000..8ea4fe94
--- /dev/null
+++ b/m4/regex.m4
@@ -0,0 +1,187 @@
+#serial 31
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 Free
+# Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl Initially derived from code in GNU grep.
+dnl Mostly written by Jim Meyering.
+
+AC_PREREQ([2.50])
+
+AC_DEFUN([gl_REGEX],
+[
+ AC_REQUIRE([AC_SYS_LARGEFILE]) dnl for a sufficently-wide off_t
+
+ AC_CACHE_CHECK([whether off_t can be used in a switch statement],
+ [gl_cv_type_off_t_switch],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [AC_INCLUDES_DEFAULT],
+ [[off_t o = -1;
+ switch (o)
+ {
+ case -2:
+ return 1;
+ case -1:
+ return 2;
+ default:
+ return 0;
+ }
+ ]])],
+ [gl_cv_type_off_t_switch=yes],
+ [gl_cv_type_off_t_switch=no])])
+ if test $gl_cv_type_off_t_switch = yes; then
+ AC_DEFINE([_REGEX_LARGE_OFFSETS], 1,
+ [Define if you want regoff_t to be at least as wide POSIX requires.])
+ fi
+
+ AC_LIBSOURCES(
+ [regcomp.c, regex.c, regex.h,
+ regex_internal.c, regex_internal.h, regexec.c])
+
+ AC_ARG_WITH([included-regex],
+ [AC_HELP_STRING([--without-included-regex],
+ [don't compile regex; this is the default on
+ systems with recent-enough versions of the GNU C
+ Library (use with caution on other systems)])])
+
+ case $with_included_regex in
+ yes|no) ac_use_included_regex=$with_included_regex
+ ;;
+ '')
+ # If the system regex support is good enough that it passes the the
+ # following run test, then default to *not* using the included regex.c.
+ # If cross compiling, assume the test would fail and use the included
+ # regex.c. The first failing regular expression is from `Spencer ere
+ # test #75' in grep-2.3.
+ AC_CACHE_CHECK([for working re_compile_pattern],
+ [gl_cv_func_re_compile_pattern_broken],
+ [AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM(
+ [AC_INCLUDES_DEFAULT
+ #include <regex.h>],
+ [[static struct re_pattern_buffer regex;
+ const char *s;
+ struct re_registers regs;
+ /* Use the POSIX-compliant spelling with leading REG_,
+ rather than the traditional GNU spelling with leading RE_,
+ so that we reject older libc implementations. */
+ re_set_syntax (REG_SYNTAX_POSIX_EGREP);
+ memset (&regex, 0, sizeof (regex));
+ s = re_compile_pattern ("a[:@:>@:]b\n", 9, &regex);
+ /* This should fail with _Invalid character class name_ error. */
+ if (!s)
+ exit (1);
+
+ /* This should succeed, but does not for e.g. glibc-2.1.3. */
+ memset (&regex, 0, sizeof (regex));
+ s = re_compile_pattern ("{1", 2, &regex);
+
+ if (s)
+ exit (1);
+
+ /* The following example is derived from a problem report
+ against gawk from Jorge Stolfi <stolfi@ic.unicamp.br>. */
+ memset (&regex, 0, sizeof (regex));
+ s = re_compile_pattern ("[an\371]*n", 7, &regex);
+ if (s)
+ exit (1);
+
+ /* This should match, but does not for e.g. glibc-2.2.1. */
+ if (re_match (&regex, "an", 2, 0, &regs) != 2)
+ exit (1);
+
+ memset (&regex, 0, sizeof (regex));
+ s = re_compile_pattern ("x", 1, &regex);
+ if (s)
+ exit (1);
+
+ /* The version of regex.c in e.g. GNU libc-2.2.93 did not
+ work with a negative RANGE argument. */
+ if (re_search (&regex, "wxy", 3, 2, -2, &regs) != 1)
+ exit (1);
+
+ /* The version of regex.c in older versions of gnulib
+ ignored REG_IGNORE_CASE (which was then called RE_ICASE).
+ Detect that problem too. */
+ memset (&regex, 0, sizeof (regex));
+ re_set_syntax (REG_SYNTAX_EMACS | REG_IGNORE_CASE);
+ s = re_compile_pattern ("x", 1, &regex);
+ if (s)
+ exit (1);
+
+ if (re_search (&regex, "WXY", 3, 0, 3, &regs) < 0)
+ exit (1);
+
+ /* REG_STARTEND was added to glibc on 2004-01-15.
+ Reject older versions. */
+ if (! REG_STARTEND)
+ exit (1);
+
+ /* Reject hosts whose regoff_t values are too narrow.
+ These include glibc 2.3.5 on hosts with 64-bit off_t
+ and 32-bit int, and Solaris 10 on hosts with 32-bit int
+ and _FILE_OFFSET_BITS=64. */
+ if (sizeof (regoff_t) < sizeof (off_t))
+ exit (1);
+
+ exit (0);]])],
+ [gl_cv_func_re_compile_pattern_broken=no],
+ [gl_cv_func_re_compile_pattern_broken=yes],
+ dnl When crosscompiling, assume it is broken.
+ [gl_cv_func_re_compile_pattern_broken=yes])])
+ ac_use_included_regex=$gl_cv_func_re_compile_pattern_broken
+ ;;
+ *) AC_MSG_ERROR([Invalid value for --with-included-regex: $with_included_regex])
+ ;;
+ esac
+
+ if test $ac_use_included_regex = yes; then
+ AC_DEFINE([re_syntax_options], [rpl_re_syntax_options],
+ [Define to rpl_re_syntax_options if the replacement should be used.])
+ AC_DEFINE([re_set_syntax], [rpl_re_set_syntax],
+ [Define to rpl_re_set_syntax if the replacement should be used.])
+ AC_DEFINE([re_compile_pattern], [rpl_re_compile_pattern],
+ [Define to rpl_re_compile_pattern if the replacement should be used.])
+ AC_DEFINE([re_compile_fastmap], [rpl_re_compile_fastmap],
+ [Define to rpl_re_compile_fastmap if the replacement should be used.])
+ AC_DEFINE([re_search], [rpl_re_search],
+ [Define to rpl_re_search if the replacement should be used.])
+ AC_DEFINE([re_search_2], [rpl_re_search_2],
+ [Define to rpl_re_search_2 if the replacement should be used.])
+ AC_DEFINE([re_match], [rpl_re_match],
+ [Define to rpl_re_match if the replacement should be used.])
+ AC_DEFINE([re_match_2], [rpl_re_match_2],
+ [Define to rpl_re_match_2 if the replacement should be used.])
+ AC_DEFINE([re_set_registers], [rpl_re_set_registers],
+ [Define to rpl_re_set_registers if the replacement should be used.])
+ AC_DEFINE([re_comp], [rpl_re_comp],
+ [Define to rpl_re_comp if the replacement should be used.])
+ AC_DEFINE([re_exec], [rpl_re_exec],
+ [Define to rpl_re_exec if the replacement should be used.])
+ AC_DEFINE([regcomp], [rpl_regcomp],
+ [Define to rpl_regcomp if the replacement should be used.])
+ AC_DEFINE([regexec], [rpl_regexec],
+ [Define to rpl_regexec if the replacement should be used.])
+ AC_DEFINE([regerror], [rpl_regerror],
+ [Define to rpl_regerror if the replacement should be used.])
+ AC_DEFINE([regfree], [rpl_regfree],
+ [Define to rpl_regfree if the replacement should be used.])
+ AC_LIBOBJ([regex])
+ gl_PREREQ_REGEX
+ fi
+])
+
+# Prerequisites of lib/regex.c and lib/regex_internal.c.
+AC_DEFUN([gl_PREREQ_REGEX],
+[
+ AC_REQUIRE([AC_GNU_SOURCE])
+ AC_REQUIRE([gl_C_RESTRICT])
+ AC_REQUIRE([AM_LANGINFO_CODESET])
+ AC_CHECK_HEADERS_ONCE([locale.h wchar.h wctype.h])
+ AC_CHECK_FUNCS_ONCE([isblank mbrtowc mempcpy wcrtomb wcscoll])
+])
diff --git a/m4/restrict.m4 b/m4/restrict.m4
new file mode 100644
index 00000000..1f3bbb92
--- /dev/null
+++ b/m4/restrict.m4
@@ -0,0 +1,38 @@
+#serial 1003
+dnl Copyright (C) 2003 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.
+
+# This macro can be removed once we can rely on Autoconf 2.57a or later,
+# since we can then use its AC_C_RESTRICT.
+
+# gl_C_RESTRICT
+# --------------
+# Determine whether the C/C++ compiler supports the "restrict" keyword
+# introduced in ANSI C99, or an equivalent. Do nothing if the compiler
+# accepts it. Otherwise, if the compiler supports an equivalent,
+# define "restrict" to be that. Here are some variants:
+# - GCC supports both __restrict and __restrict__
+# - older DEC Alpha C compilers support only __restrict
+# - _Restrict is the only spelling accepted by Sun WorkShop 6 update 2 C
+# Otherwise, define "restrict" to be empty.
+AC_DEFUN([gl_C_RESTRICT],
+[AC_CACHE_CHECK([for C/C++ restrict keyword], gl_cv_c_restrict,
+ [gl_cv_c_restrict=no
+ # Try the official restrict keyword, then gcc's __restrict, and
+ # the less common variants.
+ for ac_kw in restrict __restrict __restrict__ _Restrict; do
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+ [float * $ac_kw x;])],
+ [gl_cv_c_restrict=$ac_kw; break])
+ done
+ ])
+ case $gl_cv_c_restrict in
+ restrict) ;;
+ no) AC_DEFINE(restrict,,
+ [Define to equivalent of C99 restrict keyword, or to nothing if this
+ is not supported. Do not define if restrict is supported directly.]) ;;
+ *) AC_DEFINE_UNQUOTED(restrict, $gl_cv_c_restrict) ;;
+ esac
+])
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