-# inttypes.m4 serial 2
-dnl Copyright (C) 2006 Free Software Foundation, Inc.
+# inttypes.m4 serial 16
+dnl Copyright (C) 2006-2010 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_REQUIRE([gl_STDINT_H])
AC_REQUIRE([gt_INTTYPES_PRI])
+ AC_CHECK_HEADERS_ONCE([inttypes.h])
AC_CHECK_DECLS_ONCE([imaxabs])
AC_CHECK_DECLS_ONCE([imaxdiv])
AC_CHECK_DECLS_ONCE([strtoimax])
dnl - the existence of an <inttypes.h>,
dnl - that imaxabs, imaxdiv, strtoimax, strtoumax are declared,
dnl - some additional tests.
- gl_cv_header_working_inttypes_h=no
- if test $gl_cv_header_working_stdint_h = yes \
- && test $gl_cv_header_inttypes_h = yes \
- && test "$ac_cv_have_decl_imaxabs" = yes \
- && test "$ac_cv_have_decl_imaxdiv" = yes \
- && test "$ac_cv_have_decl_strtoimax" = yes \
- && test "$ac_cv_have_decl_strtoumax" = yes; then
- AC_COMPILE_IFELSE([
- AC_LANG_PROGRAM([
+ AC_CACHE_CHECK([whether inttypes.h conforms to C99],
+ [gl_cv_header_working_inttypes_h],
+ [gl_cv_header_working_inttypes_h=no
+ if test "$gl_cv_header_working_stdint_h" = yes \
+ && test $ac_cv_header_inttypes_h = yes \
+ && test "$ac_cv_have_decl_imaxabs" = yes \
+ && test "$ac_cv_have_decl_imaxdiv" = yes \
+ && test "$ac_cv_have_decl_strtoimax" = yes \
+ && test "$ac_cv_have_decl_strtoumax" = yes; then
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
#include <stddef.h>
#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 __STDC_FORMAT_MACROS 1 /* to make it work also in C++ mode */
-#include ABSOLUTE_INTTYPES_H
+#define _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H /* work if build isn't clean */
+#include <inttypes.h>
/* No need to duplicate the tests of stdint.m4; they are subsumed by
$gl_cv_header_working_stdint_h = yes. */
#endif
#ifdef UINT32_MAX
PRIo32 PRIu32 PRIx32 PRIX32
+#endif
#ifdef INT64_MAX
PRId64 PRIi64
#endif
SCNd8 SCNi8
#endif
#ifdef UINT8_MAX
- SCNo8 SCNu8 SCNx8 SCNX8
+ SCNo8 SCNu8 SCNx8
#endif
#ifdef INT16_MAX
SCNd16 SCNi16
#endif
#ifdef UINT16_MAX
- SCNo16 SCNu16 SCNx16 SCNX16
+ SCNo16 SCNu16 SCNx16
#endif
#ifdef INT32_MAX
SCNd32 SCNi32
#endif
#ifdef UINT32_MAX
- SCNo32 SCNu32 SCNx32 SCNX32
+ SCNo32 SCNu32 SCNx32
#endif
#ifdef INT64_MAX
SCNd64 SCNi64
#endif
#ifdef UINT64_MAX
- SCNo64 SCNu64 SCNx64 SCNX64
+ SCNo64 SCNu64 SCNx64
#endif
- SCNdLEAST8 SCNiLEAST8 SCNoLEAST8 SCNuLEAST8 SCNxLEAST8 SCNXLEAST8
- SCNdLEAST16 SCNiLEAST16 SCNoLEAST16 SCNuLEAST16 SCNxLEAST16 SCNXLEAST16
- SCNdLEAST32 SCNiLEAST32 SCNoLEAST32 SCNuLEAST32 SCNxLEAST32 SCNXLEAST32
+ SCNdLEAST8 SCNiLEAST8 SCNoLEAST8 SCNuLEAST8 SCNxLEAST8
+ SCNdLEAST16 SCNiLEAST16 SCNoLEAST16 SCNuLEAST16 SCNxLEAST16
+ SCNdLEAST32 SCNiLEAST32 SCNoLEAST32 SCNuLEAST32 SCNxLEAST32
SCNdLEAST64 SCNiLEAST64
- SCNoLEAST64 SCNuLEAST64 SCNxLEAST64 SCNXLEAST64
- SCNdFAST8 SCNiFAST8 SCNoFAST8 SCNuFAST8 SCNxFAST8 SCNXFAST8
- SCNdFAST16 SCNiFAST16 SCNoFAST16 SCNuFAST16 SCNxFAST16 SCNXFAST16
- SCNdFAST32 SCNiFAST32 SCNoFAST32 SCNuFAST32 SCNxFAST32 SCNXFAST32
+ SCNoLEAST64 SCNuLEAST64 SCNxLEAST64
+ SCNdFAST8 SCNiFAST8 SCNoFAST8 SCNuFAST8 SCNxFAST8
+ SCNdFAST16 SCNiFAST16 SCNoFAST16 SCNuFAST16 SCNxFAST16
+ SCNdFAST32 SCNiFAST32 SCNoFAST32 SCNuFAST32 SCNxFAST32
SCNdFAST64 SCNiFAST64
- SCNoFAST64 SCNuFAST64 SCNxFAST64 SCNXFAST64
- SCNdMAX SCNiMAX SCNoMAX SCNuMAX SCNxMAX SCNXMAX
+ SCNoFAST64 SCNuFAST64 SCNxFAST64
+ SCNdMAX SCNiMAX SCNoMAX SCNuMAX SCNxMAX
#ifdef INTPTR_MAX
SCNdPTR SCNiPTR
#endif
#ifdef UINTPTR_MAX
- SCNoPTR SCNuPTR SCNxPTR SCNXPTR
+ SCNoPTR SCNuPTR SCNxPTR
#endif
;
- ])],
- [gl_cv_header_working_inttypes_h=yes])
+ ]])],
+ [gl_cv_header_working_inttypes_h=yes])
+ fi])
+
+ dnl Override <inttypes.h> always, so that the portability warnings work.
+ AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
+ gl_CHECK_NEXT_HEADERS([inttypes.h])
+
+ AC_REQUIRE([gl_MULTIARCH])
+
+ dnl Ensure that <stdint.h> defines the limit macros, since gnulib's
+ dnl <inttypes.h> relies on them. This macro is only needed when a
+ dnl C++ compiler is in use; it has no effect for a C compiler.
+ dnl Also be careful to define __STDC_LIMIT_MACROS only when gnulib's
+ dnl <inttypes.h> is going to be created, and to avoid redefinition warnings
+ dnl if the __STDC_LIMIT_MACROS is already defined through the CPPFLAGS.
+ AC_DEFINE([GL_TRIGGER_STDC_LIMIT_MACROS], [1],
+ [Define to make the limit macros in <stdint.h> visible.])
+ AH_VERBATIM([__STDC_LIMIT_MACROS_ZZZ],
+[/* Ensure that <stdint.h> defines the limit macros, since gnulib's
+ <inttypes.h> relies on them. */
+#if defined __cplusplus && !defined __STDC_LIMIT_MACROS && GL_TRIGGER_STDC_LIMIT_MACROS
+# define __STDC_LIMIT_MACROS 1
+#endif
+])
+
+ PRIPTR_PREFIX=
+ if test -n "$STDINT_H"; then
+ dnl Using the gnulib <stdint.h>. It always defines intptr_t to 'long'.
+ PRIPTR_PREFIX='"l"'
+ else
+ dnl Using the system's <stdint.h>.
+ for glpfx in '' l ll I64; do
+ case $glpfx in
+ '') gltype1='int';;
+ l) gltype1='long int';;
+ ll) gltype1='long long int';;
+ I64) gltype1='__int64';;
+ esac
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[#include <stdint.h>
+ extern intptr_t foo;
+ extern $gltype1 foo;]])],
+ [PRIPTR_PREFIX='"'$glpfx'"'])
+ test -n "$PRIPTR_PREFIX" && break
+ done
+ fi
+ AC_SUBST([PRIPTR_PREFIX])
+
+ if test "$ac_cv_have_decl_imaxabs" = yes; then
+ HAVE_DECL_IMAXABS=1
+ else
+ HAVE_DECL_IMAXABS=0
+ fi
+
+ if test "$ac_cv_have_decl_imaxdiv" = yes; then
+ HAVE_DECL_IMAXDIV=1
+ else
+ HAVE_DECL_IMAXDIV=0
+ fi
+
+ if test "$ac_cv_have_decl_strtoimax" = yes; then
+ HAVE_DECL_STRTOIMAX=1
+ else
+ HAVE_DECL_STRTOIMAX=0
+ fi
+
+ if test "$ac_cv_have_decl_strtoumax" = yes; then
+ HAVE_DECL_STRTOUMAX=1
+ else
+ HAVE_DECL_STRTOUMAX=0
+ fi
+
+ gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION(
+ [INT32_MAX_LT_INTMAX_MAX],
+ [defined INT32_MAX && defined INTMAX_MAX],
+ [INT32_MAX < INTMAX_MAX],
+ [sizeof (int) < sizeof (long long int)])
+ if test $APPLE_UNIVERSAL_BUILD = 0; then
+ gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION(
+ [INT64_MAX_EQ_LONG_MAX],
+ [defined INT64_MAX],
+ [INT64_MAX == LONG_MAX],
+ [sizeof (long long int) == sizeof (long int)])
+ else
+ INT64_MAX_EQ_LONG_MAX=-1
fi
- if test $gl_cv_header_working_inttypes_h = yes; then
- dnl Use the existing <inttypes.h>.
- INTTYPES_H=''
+ gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION(
+ [UINT32_MAX_LT_UINTMAX_MAX],
+ [defined UINT32_MAX && defined UINTMAX_MAX],
+ [UINT32_MAX < UINTMAX_MAX],
+ [sizeof (unsigned int) < sizeof (unsigned long long int)])
+ if test $APPLE_UNIVERSAL_BUILD = 0; then
+ gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION(
+ [UINT64_MAX_EQ_ULONG_MAX],
+ [defined UINT64_MAX],
+ [UINT64_MAX == ULONG_MAX],
+ [sizeof (unsigned long long int) == sizeof (unsigned long int)])
else
+ UINT64_MAX_EQ_ULONG_MAX=-1
+ fi
+])
+
+# Define the symbol $1 to be 1 if the condition is true, 0 otherwise.
+# If $2 is true, the condition is $3; otherwise if long long int is supported
+# approximate the condition with $4; otherwise, assume the condition is false.
+# The condition should work on all C99 platforms; the approximations should be
+# good enough to work on all practical pre-C99 platforms.
+# $2 is evaluated by the C preprocessor, $3 and $4 as compile-time constants.
+AC_DEFUN([gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION],
+[
+ AC_CACHE_CHECK([whether $3],
+ [gl_cv_test_$1],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[/* Work also in C++ mode. */
+ #define __STDC_LIMIT_MACROS 1
- PRIPTR_PREFIX=
- if test -n "$STDINT_H"; then
- dnl Using the gnulib <stdint.h>. It always defines intptr_t to 'long'.
- PRIPTR_PREFIX='"l"'
- else
- dnl Using the system's <stdint.h>.
- for glpfx in '' l ll I64; do
- case $glpfx in
- '') gltype1='int';;
- l) gltype1='long int';;
- ll) gltype1='long long int';;
- I64) gltype1='__int64';;
- esac
- AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([#include <stdint.h>
- extern intptr_t foo;
- extern $gltype1 foo;])],
- [PRIPTR_PREFIX='"'$glpfx'"'])
- test -n "$PRIPTR_PREFIX" && break
- done
- fi
- AC_SUBST([PRIPTR_PREFIX])
-
- if test "$ac_cv_have_decl_imaxabs" = yes; then
- HAVE_DECL_IMAXABS=1
- else
- HAVE_DECL_IMAXABS=0
- fi
- AC_SUBST([HAVE_DECL_IMAXABS])
-
- if test "$ac_cv_have_decl_imaxdiv" = yes; then
- HAVE_DECL_IMAXDIV=1
- else
- HAVE_DECL_IMAXDIV=0
- fi
- AC_SUBST([HAVE_DECL_IMAXDIV])
-
- if test "$ac_cv_have_decl_strtoimax" = yes; then
- HAVE_DECL_STRTOIMAX=1
- else
- HAVE_DECL_STRTOIMAX=0
- fi
- AC_SUBST([HAVE_DECL_STRTOIMAX])
-
- if test "$ac_cv_have_decl_strtoumax" = yes; then
- HAVE_DECL_STRTOUMAX=1
- else
- HAVE_DECL_STRTOUMAX=0
- fi
- AC_SUBST([HAVE_DECL_STRTOUMAX])
-
- INTTYPES_H='inttypes.h'
+ /* Work if build is not clean. */
+ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H
+
+ #include <limits.h>
+ #if HAVE_STDINT_H
+ #include <stdint.h>
+ #endif
+
+ #if $2
+ #define CONDITION ($3)
+ #elif HAVE_LONG_LONG_INT
+ #define CONDITION ($4)
+ #else
+ #define CONDITION 0
+ #endif
+ int test[CONDITION ? 1 : -1];]])],
+ [gl_cv_test_$1=yes],
+ [gl_cv_test_$1=no])])
+ if test $gl_cv_test_$1 = yes; then
+ $1=1;
+ else
+ $1=0;
fi
- AC_SUBST(INTTYPES_H)
+ AC_SUBST([$1])
+])
+
+AC_DEFUN([gl_INTTYPES_MODULE_INDICATOR],
+[
+ dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+ AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
+ GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+])
+
+AC_DEFUN([gl_INTTYPES_H_DEFAULTS],
+[
+ GNULIB_IMAXABS=0; AC_SUBST([GNULIB_IMAXABS])
+ GNULIB_IMAXDIV=0; AC_SUBST([GNULIB_IMAXDIV])
+ GNULIB_STRTOIMAX=0; AC_SUBST([GNULIB_STRTOIMAX])
+ GNULIB_STRTOUMAX=0; AC_SUBST([GNULIB_STRTOUMAX])
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE_DECL_IMAXABS=1; AC_SUBST([HAVE_DECL_IMAXABS])
+ HAVE_DECL_IMAXDIV=1; AC_SUBST([HAVE_DECL_IMAXDIV])
+ HAVE_DECL_STRTOIMAX=1; AC_SUBST([HAVE_DECL_STRTOIMAX])
+ HAVE_DECL_STRTOUMAX=1; AC_SUBST([HAVE_DECL_STRTOUMAX])
])
projects / gnulib.git / blobdiff