diff options
Diffstat (limited to 'gnulib-m4/stdint.m4')
| -rw-r--r-- | gnulib-m4/stdint.m4 | 88 |
1 files changed, 72 insertions, 16 deletions
diff --git a/gnulib-m4/stdint.m4 b/gnulib-m4/stdint.m4 index 4011a494..05b6ab78 100644 --- a/gnulib-m4/stdint.m4 +++ b/gnulib-m4/stdint.m4 @@ -1,5 +1,5 @@ -# stdint.m4 serial 43 -dnl Copyright (C) 2001-2015 Free Software Foundation, Inc. +# stdint.m4 serial 48 +dnl Copyright (C) 2001-2016 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. @@ -11,6 +11,8 @@ AC_DEFUN_ONCE([gl_STDINT_H], [ AC_PREREQ([2.59])dnl + AC_REQUIRE([gl_LIMITS_H]) + dnl Check for long long int and unsigned long long int. AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) if test $ac_cv_type_long_long_int = yes; then @@ -70,6 +72,8 @@ AC_DEFUN_ONCE([gl_STDINT_H], AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ +#define __STDC_CONSTANT_MACROS 1 +#define __STDC_LIMIT_MACROS 1 #include <stdint.h> /* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in <wchar.h>. */ #if !(defined WCHAR_MIN && defined WCHAR_MAX) @@ -150,6 +154,15 @@ uintptr_t h = UINTPTR_MAX; intmax_t i = INTMAX_MAX; uintmax_t j = UINTMAX_MAX; +/* Check that SIZE_MAX has the correct type, if possible. */ +#if 201112 <= __STDC_VERSION__ +int k = _Generic (SIZE_MAX, size_t: 0); +#elif (2 <= __GNUC__ || defined __IBM__TYPEOF__ \ + || (0x5110 <= __SUNPRO_C && !__STDC__)) +extern size_t k; +extern __typeof__ (SIZE_MAX) k; +#endif + #include <limits.h> /* for CHAR_BIT */ #define TYPE_MINIMUM(t) \ ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t))) @@ -218,6 +231,8 @@ struct s { AC_RUN_IFELSE([ AC_LANG_PROGRAM([[ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ +#define __STDC_CONSTANT_MACROS 1 +#define __STDC_LIMIT_MACROS 1 #include <stdint.h> ] gl_STDINT_INCLUDES @@ -278,28 +293,74 @@ static const char *macro_values[] = ]) ]) fi + + HAVE_C99_STDINT_H=0 + HAVE_SYS_BITYPES_H=0 + HAVE_SYS_INTTYPES_H=0 + STDINT_H=stdint.h if test "$gl_cv_header_working_stdint_h" = yes; then - STDINT_H= + HAVE_C99_STDINT_H=1 + dnl Now see whether the system <stdint.h> works without + dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined. + AC_CACHE_CHECK([whether stdint.h predates C++11], + [gl_cv_header_stdint_predates_cxx11_h], + [gl_cv_header_stdint_predates_cxx11_h=yes + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ +#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ +#include <stdint.h> +] +gl_STDINT_INCLUDES +[ +intmax_t im = INTMAX_MAX; +int32_t i32 = INT32_C (0x7fffffff); + ]])], + [gl_cv_header_stdint_predates_cxx11_h=no])]) + + if test "$gl_cv_header_stdint_predates_cxx11_h" = yes; then + AC_DEFINE([__STDC_CONSTANT_MACROS], [1], + [Define to 1 if the system <stdint.h> predates C++11.]) + AC_DEFINE([__STDC_LIMIT_MACROS], [1], + [Define to 1 if the system <stdint.h> predates C++11.]) + fi + AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.], + [gl_cv_header_stdint_width], + [gl_cv_header_stdint_width=no + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[ + /* Work if build is not clean. */ + #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 + #ifndef __STDC_WANT_IEC_60559_BFP_EXT__ + #define __STDC_WANT_IEC_60559_BFP_EXT__ 1 + #endif + #include <stdint.h> + ]gl_STDINT_INCLUDES[ + int iw = UINTMAX_WIDTH; + ]])], + [gl_cv_header_stdint_width=yes])]) + if test "$gl_cv_header_stdint_width" = yes; then + STDINT_H= + fi else dnl Check for <sys/inttypes.h>, and for dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5). AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h]) if test $ac_cv_header_sys_inttypes_h = yes; then HAVE_SYS_INTTYPES_H=1 - else - HAVE_SYS_INTTYPES_H=0 fi - AC_SUBST([HAVE_SYS_INTTYPES_H]) if test $ac_cv_header_sys_bitypes_h = yes; then HAVE_SYS_BITYPES_H=1 - else - HAVE_SYS_BITYPES_H=0 fi - AC_SUBST([HAVE_SYS_BITYPES_H]) - gl_STDINT_TYPE_PROPERTIES - STDINT_H=stdint.h fi + + # The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH. + LIMITS_H=limits.h + AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) + + AC_SUBST([HAVE_C99_STDINT_H]) + AC_SUBST([HAVE_SYS_BITYPES_H]) + AC_SUBST([HAVE_SYS_INTTYPES_H]) AC_SUBST([STDINT_H]) AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"]) ]) @@ -477,8 +538,3 @@ dnl Remove this when we can assume autoconf >= 2.61. m4_ifdef([AC_COMPUTE_INT], [], [ AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])]) ]) - -# Hey Emacs! -# Local Variables: -# indent-tabs-mode: nil -# End: |