# stdint.m4 serial 4 dnl Copyright (C) 2001-2002, 2004-2005 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 Bruno Haible. dnl Test whether is supported or must be substituted. AC_DEFUN([gl_STDINT_H], [dnl Check for . AC_REQUIRE([gt_HEADER_INTTYPES_H]) dnl Check for . AC_CHECK_HEADERS([sys/inttypes.h]) AC_MSG_CHECKING([for stdint.h]) AC_CACHE_VAL(gl_cv_header_stdint_h, [ AC_TRY_COMPILE([#include ], [], gl_cv_header_stdint_h=yes, gl_cv_header_stdint_h=no)]) AC_MSG_RESULT([$gl_cv_header_stdint_h]) if test $gl_cv_header_stdint_h = yes; then AC_DEFINE(HAVE_STDINT_H, 1, [Define if you have a working header file.]) STDINT_H='' else STDINT_H='stdint.h' dnl Is long == int64_t ? AC_CACHE_CHECK([whether 'long' is 64 bit wide], gl_cv_long_bitsize_64, [ AC_TRY_COMPILE([ #define POW63 ((((((long) 1 << 15) << 15) << 15) << 15) << 3) #define POW64 ((((((long) 1 << 15) << 15) << 15) << 15) << 4) typedef int array [2 * (POW63 != 0 && POW64 == 0) - 1]; ], , gl_cv_long_bitsize_64=yes, gl_cv_long_bitsize_64=no)]) if test $gl_cv_long_bitsize_64 = yes; then HAVE_LONG_64BIT=1 else HAVE_LONG_64BIT=0 fi AC_SUBST(HAVE_LONG_64BIT) dnl Is long long == int64_t ? AC_CACHE_CHECK([whether 'long long' is 64 bit wide], gl_cv_longlong_bitsize_64, [ AC_TRY_COMPILE([ #define POW63 ((((((long long) 1 << 15) << 15) << 15) << 15) << 3) #define POW64 ((((((long long) 1 << 15) << 15) << 15) << 15) << 4) typedef int array [2 * (POW63 != 0 && POW64 == 0) - 1]; ], , gl_cv_longlong_bitsize_64=yes, gl_cv_longlong_bitsize_64=no)]) if test $gl_cv_longlong_bitsize_64 = yes; then HAVE_LONG_LONG_64BIT=1 else HAVE_LONG_LONG_64BIT=0 fi AC_SUBST(HAVE_LONG_LONG_64BIT) fi AC_SUBST(STDINT_H) ])