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Diffstat (limited to 'gnulib-m4/stdint.m4')
-rw-r--r--gnulib-m4/stdint.m488
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: