diff options
Diffstat (limited to 'gl/m4/stdint.m4')
| -rw-r--r-- | gl/m4/stdint.m4 | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/gl/m4/stdint.m4 b/gl/m4/stdint.m4 index c5e813a9..27cdcdb9 100644 --- a/gl/m4/stdint.m4 +++ b/gl/m4/stdint.m4 @@ -1,5 +1,5 @@ -# stdint.m4 serial 35 -dnl Copyright (C) 2001-2010 Free Software Foundation, Inc. +# stdint.m4 serial 43 +dnl Copyright (C) 2001-2013 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. @@ -7,7 +7,7 @@ dnl with or without modifications, as long as this notice is preserved. dnl From Paul Eggert and Bruno Haible. dnl Test whether <stdint.h> is supported or must be substituted. -AC_DEFUN([gl_STDINT_H], +AC_DEFUN_ONCE([gl_STDINT_H], [ AC_PREREQ([2.59])dnl @@ -27,6 +27,15 @@ AC_DEFUN([gl_STDINT_H], fi AC_SUBST([HAVE_UNSIGNED_LONG_LONG_INT]) + dnl Check for <wchar.h>, in the same way as gl_WCHAR_H does. + AC_CHECK_HEADERS_ONCE([wchar.h]) + if test $ac_cv_header_wchar_h = yes; then + HAVE_WCHAR_H=1 + else + HAVE_WCHAR_H=0 + fi + AC_SUBST([HAVE_WCHAR_H]) + dnl Check for <inttypes.h>. dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_inttypes_h. if test $ac_cv_header_inttypes_h = yes; then @@ -60,8 +69,6 @@ AC_DEFUN([gl_STDINT_H], [gl_cv_header_working_stdint_h=no AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ -#define __STDC_LIMIT_MACROS 1 /* to make it work also in C++ mode */ -#define __STDC_CONSTANT_MACROS 1 /* to make it work also in C++ mode */ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ #include <stdint.h> /* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in <wchar.h>. */ @@ -145,9 +152,11 @@ uintmax_t j = UINTMAX_MAX; #include <limits.h> /* for CHAR_BIT */ #define TYPE_MINIMUM(t) \ - ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))) + ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t))) #define TYPE_MAXIMUM(t) \ - ((t) ((t) 0 < (t) -1 ? (t) -1 : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))) + ((t) ((t) 0 < (t) -1 \ + ? (t) -1 \ + : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1))) struct s { int check_PTRDIFF: PTRDIFF_MIN == TYPE_MINIMUM (ptrdiff_t) @@ -208,8 +217,6 @@ struct s { dnl This detects a bug on HP-UX 11.23/ia64. AC_RUN_IFELSE([ AC_LANG_PROGRAM([[ -#define __STDC_LIMIT_MACROS 1 /* to make it work also in C++ mode */ -#define __STDC_CONSTANT_MACROS 1 /* to make it work also in C++ mode */ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ #include <stdint.h> ] @@ -259,7 +266,7 @@ static const char *macro_values[] = || strncmp (value, "((int)"/*)*/, 6) == 0 || strncmp (value, "((signed short)"/*)*/, 15) == 0 || strncmp (value, "((signed char)"/*)*/, 14) == 0) - return 1; + return mv - macro_values + 1; } return 0; ]])], @@ -290,14 +297,11 @@ static const char *macro_values[] = fi AC_SUBST([HAVE_SYS_BITYPES_H]) - dnl Check for <wchar.h> (missing in Linux uClibc when built without wide - dnl character support). - AC_CHECK_HEADERS_ONCE([wchar.h]) - gl_STDINT_TYPE_PROPERTIES STDINT_H=stdint.h fi AC_SUBST([STDINT_H]) + AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"]) ]) dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES) @@ -458,6 +462,14 @@ AC_DEFUN([gl_STDINT_TYPE_PROPERTIES], fi gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t], [gl_STDINT_INCLUDES]) + + dnl If wint_t is smaller than 'int', it cannot satisfy the ISO C 99 + dnl requirement that wint_t is "unchanged by default argument promotions". + dnl In this case gnulib's <wchar.h> and <wctype.h> override wint_t. + dnl Set the variable BITSIZEOF_WINT_T accordingly. + if test $BITSIZEOF_WINT_T -lt 32; then + BITSIZEOF_WINT_T=32 + fi ]) dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in. |