# inttypes.m4 serial 18 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. dnl From Derek Price, Bruno Haible. dnl Test whether is supported or must be substituted. AC_DEFUN([gl_INTTYPES_H], [ 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]) AC_CHECK_DECLS_ONCE([strtoumax]) dnl Now see if we need a substitute . dnl A complete requires dnl - a complete , dnl - the existence of an , dnl - that imaxabs, imaxdiv, strtoimax, strtoumax are declared, dnl - some additional tests. 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 #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 */ #define _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H /* work if build isn't clean */ #include /* No need to duplicate the tests of stdint.m4; they are subsumed by $gl_cv_header_working_stdint_h = yes. */ /* Tests for macros supposed to be defined in inttypes.h. */ const char *k = /* implicit string concatenation */ #ifdef INT8_MAX PRId8 PRIi8 #endif #ifdef UINT8_MAX PRIo8 PRIu8 PRIx8 PRIX8 #endif #ifdef INT16_MAX PRId16 PRIi16 #endif #ifdef UINT16_MAX PRIo16 PRIu16 PRIx16 PRIX16 #endif #ifdef INT32_MAX PRId32 PRIi32 #endif #ifdef UINT32_MAX PRIo32 PRIu32 PRIx32 PRIX32 #endif #ifdef INT64_MAX PRId64 PRIi64 #endif #ifdef UINT64_MAX PRIo64 PRIu64 PRIx64 PRIX64 #endif PRIdLEAST8 PRIiLEAST8 PRIoLEAST8 PRIuLEAST8 PRIxLEAST8 PRIXLEAST8 PRIdLEAST16 PRIiLEAST16 PRIoLEAST16 PRIuLEAST16 PRIxLEAST16 PRIXLEAST16 PRIdLEAST32 PRIiLEAST32 PRIoLEAST32 PRIuLEAST32 PRIxLEAST32 PRIXLEAST32 PRIdLEAST64 PRIiLEAST64 PRIoLEAST64 PRIuLEAST64 PRIxLEAST64 PRIXLEAST64 PRIdFAST8 PRIiFAST8 PRIoFAST8 PRIuFAST8 PRIxFAST8 PRIXFAST8 PRIdFAST16 PRIiFAST16 PRIoFAST16 PRIuFAST16 PRIxFAST16 PRIXFAST16 PRIdFAST32 PRIiFAST32 PRIoFAST32 PRIuFAST32 PRIxFAST32 PRIXFAST32 PRIdFAST64 PRIiFAST64 PRIoFAST64 PRIuFAST64 PRIxFAST64 PRIXFAST64 PRIdMAX PRIiMAX PRIoMAX PRIuMAX PRIxMAX PRIXMAX #ifdef INTPTR_MAX PRIdPTR PRIiPTR #endif #ifdef UINTPTR_MAX PRIoPTR PRIuPTR PRIxPTR PRIXPTR #endif ; const char *l = /* implicit string concatenation */ #ifdef INT8_MAX SCNd8 SCNi8 #endif #ifdef UINT8_MAX SCNo8 SCNu8 SCNx8 #endif #ifdef INT16_MAX SCNd16 SCNi16 #endif #ifdef UINT16_MAX SCNo16 SCNu16 SCNx16 #endif #ifdef INT32_MAX SCNd32 SCNi32 #endif #ifdef UINT32_MAX SCNo32 SCNu32 SCNx32 #endif #ifdef INT64_MAX SCNd64 SCNi64 #endif #ifdef UINT64_MAX SCNo64 SCNu64 SCNx64 #endif SCNdLEAST8 SCNiLEAST8 SCNoLEAST8 SCNuLEAST8 SCNxLEAST8 SCNdLEAST16 SCNiLEAST16 SCNoLEAST16 SCNuLEAST16 SCNxLEAST16 SCNdLEAST32 SCNiLEAST32 SCNoLEAST32 SCNuLEAST32 SCNxLEAST32 SCNdLEAST64 SCNiLEAST64 SCNoLEAST64 SCNuLEAST64 SCNxLEAST64 SCNdFAST8 SCNiFAST8 SCNoFAST8 SCNuFAST8 SCNxFAST8 SCNdFAST16 SCNiFAST16 SCNoFAST16 SCNuFAST16 SCNxFAST16 SCNdFAST32 SCNiFAST32 SCNoFAST32 SCNuFAST32 SCNxFAST32 SCNdFAST64 SCNiFAST64 SCNoFAST64 SCNuFAST64 SCNxFAST64 SCNdMAX SCNiMAX SCNoMAX SCNuMAX SCNxMAX #ifdef INTPTR_MAX SCNdPTR SCNiPTR #endif #ifdef UINTPTR_MAX SCNoPTR SCNuPTR SCNxPTR #endif ; ]])], [gl_cv_header_working_inttypes_h=yes]) fi]) dnl Override 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 defines the limit macros, since gnulib's dnl 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 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 visible.]) AH_VERBATIM([__STDC_LIMIT_MACROS_ZZZ], [/* Ensure that defines the limit macros, since gnulib's 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 . It always defines intptr_t to 'long'. PRIPTR_PREFIX='"l"' else dnl Using the system's . 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 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 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 dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [imaxabs imaxdiv strtoimax strtoumax]) ]) # 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 /* Work if build is not clean. */ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H #include #if HAVE_STDINT_H #include #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([$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]) gl_MODULE_INDICATOR_SET_VARIABLE([$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]) ])