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Diffstat (limited to 'm4/inttypes.m4')
| -rw-r--r-- | m4/inttypes.m4 | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/m4/inttypes.m4 b/m4/inttypes.m4 new file mode 100644 index 0000000..095ace9 --- /dev/null +++ b/m4/inttypes.m4 @@ -0,0 +1,223 @@ +# inttypes.m4 serial 8 +dnl Copyright (C) 2006-2007 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 <inttypes.h> is supported or must be substituted. + +AC_DEFUN([gl_INTTYPES_H], +[ + AC_REQUIRE([gl_STDINT_H]) + AC_REQUIRE([gt_INTTYPES_PRI]) + 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 <inttypes.h>. + dnl A complete <inttypes.h> requires + dnl - a complete <stdint.h>, + dnl - the existence of an <inttypes.h>, + 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 <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 + +/* 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 <inttypes.h> always, so that the portability warnings work. + if false && test $gl_cv_header_working_inttypes_h = yes; then + dnl Use the existing <inttypes.h>. + INTTYPES_H='' + else + + AC_REQUIRE([gl_INTTYPES_H_DEFAULTS]) + dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_inttypes_h. + if test $ac_cv_header_inttypes_h = yes; then + gl_ABSOLUTE_HEADER([inttypes.h]) + ABSOLUTE_INTTYPES_H=\"$gl_cv_absolute_inttypes_h\" + else + ABSOLUTE_INTTYPES_H=\"no/such/file/inttypes.h\" + fi + AC_SUBST([ABSOLUTE_INTTYPES_H]) + + 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 + + INTTYPES_H='inttypes.h' + fi + AC_SUBST(INTTYPES_H) +]) + +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]) +]) |