AC_DEFUN([GCC_STDINT_TYPES],[AC_REQUIRE([AC_TYPE_INT8_T])AC_REQUIRE([AC_TYPE_INT16_T])AC_REQUIRE([AC_TYPE_INT32_T])AC_REQUIRE([AC_TYPE_INT64_T])AC_REQUIRE([AC_TYPE_INTMAX_T])AC_REQUIRE([AC_TYPE_INTPTR_T])AC_REQUIRE([AC_TYPE_UINT8_T])AC_REQUIRE([AC_TYPE_UINT16_T])AC_REQUIRE([AC_TYPE_UINT32_T])AC_REQUIRE([AC_TYPE_UINT64_T])AC_REQUIRE([AC_TYPE_UINTMAX_T])AC_REQUIRE([AC_TYPE_UINTPTR_T])])dnl @synopsis GCC_HEADER_STDINT [( HEADER-TO-GENERATE [, HEADERS-TO-CHECK])]dnldnl the "ISO C9X: 7.18 Integer types <stdint.h>" section requires thednl existence of an include file <stdint.h> that defines a set ofdnl typedefs, especially uint8_t,int32_t,uintptr_t.dnl Many older installations will not provide this file, but some willdnl have the very same definitions in <inttypes.h>. In other enviromentsdnl we can use the inet-types in <sys/types.h> which would define thednl typedefs int8_t and u_int8_t respectivly.dnldnl This macros will create a local "_stdint.h" or the headerfile given asdnl an argument. In many cases that file will pick the definition from adnl "#include <stdint.h>" or "#include <inttypes.h>" statement, whilednl in other environments it will provide the set of basic 'stdint's defined:dnl int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,intptr_t,uintptr_tdnl int_least32_t.. int_fast32_t.. intmax_tdnl which may or may not rely on the definitions of other files.dnldnl Sometimes the stdint.h or inttypes.h headers conflict with sys/types.h,dnl so we test the headers together with sys/types.h and always include itdnl into the generated header (to match the tests with the generated file).dnl Hopefully this is not a big annoyance.dnldnl If your installed header files require the stdint-types you will want todnl create an installable file mylib-int.h that all your other installablednl header may include. So, for a library package named "mylib", just usednl GCC_HEADER_STDINT(mylib-int.h)dnl in configure.in and install that header file in Makefile.am along withdnl the other headers (mylib.h). The mylib-specific headers can simplydnl use "#include <mylib-int.h>" to obtain the stdint-types.dnldnl Remember, if the system already had a valid <stdint.h>, the generateddnl file will include it directly. No need for fuzzy HAVE_STDINT_H things...dnldnl @author Guido Draheim <guidod@gmx.de>, Paolo Bonzini <bonzini@gnu.org>AC_DEFUN([GCC_HEADER_STDINT],[m4_define(_GCC_STDINT_H, m4_ifval($1, $1, _stdint.h))inttype_headers=`echo inttypes.h sys/inttypes.h $2 | sed -e 's/,/ /g'`acx_cv_header_stdint=stddef.hacx_cv_header_stdint_kind="(already complete)"for i in stdint.h $inttype_headers; dounset ac_cv_type_uintptr_tunset ac_cv_type_uintmax_tunset ac_cv_type_int_least32_tunset ac_cv_type_int_fast32_tunset ac_cv_type_uint64_t_AS_ECHO_N([looking for a compliant stdint.h in $i, ])AC_CHECK_TYPE(uintmax_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>#include <$i>])AC_CHECK_TYPE(uintptr_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>#include <$i>])AC_CHECK_TYPE(int_least32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>#include <$i>])AC_CHECK_TYPE(int_fast32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>#include <$i>])AC_CHECK_TYPE(uint64_t,,[acx_cv_header_stdint_kind="(lacks uint64_t)"], [#include <sys/types.h>#include <$i>])breakdoneif test "$acx_cv_header_stdint" = stddef.h; thenacx_cv_header_stdint_kind="(lacks uintmax_t)"for i in stdint.h $inttype_headers; dounset ac_cv_type_uintptr_tunset ac_cv_type_uint32_tunset ac_cv_type_uint64_t_AS_ECHO_N([looking for an incomplete stdint.h in $i, ])AC_CHECK_TYPE(uint32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>#include <$i>])AC_CHECK_TYPE(uint64_t,,,[#include <sys/types.h>#include <$i>])AC_CHECK_TYPE(uintptr_t,,,[#include <sys/types.h>#include <$i>])breakdonefiif test "$acx_cv_header_stdint" = stddef.h; thenacx_cv_header_stdint_kind="(u_intXX_t style)"for i in sys/types.h $inttype_headers; dounset ac_cv_type_u_int32_tunset ac_cv_type_u_int64_t_AS_ECHO_N([looking for u_intXX_t types in $i, ])AC_CHECK_TYPE(u_int32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>#include <$i>])AC_CHECK_TYPE(u_int64_t,,,[#include <sys/types.h>#include <$i>])breakdonefiif test "$acx_cv_header_stdint" = stddef.h; thenacx_cv_header_stdint_kind="(using manual detection)"fitest -z "$ac_cv_type_uintptr_t" && ac_cv_type_uintptr_t=notest -z "$ac_cv_type_uint64_t" && ac_cv_type_uint64_t=notest -z "$ac_cv_type_u_int64_t" && ac_cv_type_u_int64_t=notest -z "$ac_cv_type_int_least32_t" && ac_cv_type_int_least32_t=notest -z "$ac_cv_type_int_fast32_t" && ac_cv_type_int_fast32_t=no# ----------------- Summarize what we found so farAC_MSG_CHECKING([what to include in _GCC_STDINT_H])case `AS_BASENAME(_GCC_STDINT_H)` instdint.h) AC_MSG_WARN([are you sure you want it there?]) ;;inttypes.h) AC_MSG_WARN([are you sure you want it there?]) ;;*) ;;esacAC_MSG_RESULT($acx_cv_header_stdint $acx_cv_header_stdint_kind)# ----------------- done included file, check C basic types --------# Lacking an uintptr_t? Test size of void *case "$acx_cv_header_stdint:$ac_cv_type_uintptr_t" instddef.h:* | *:no) AC_CHECK_SIZEOF(void *) ;;esac# Lacking an uint64_t? Test size of longcase "$acx_cv_header_stdint:$ac_cv_type_uint64_t:$ac_cv_type_u_int64_t" instddef.h:*:* | *:no:no) AC_CHECK_SIZEOF(long) ;;esacif test $acx_cv_header_stdint = stddef.h; then# Lacking a good header? Test size of everything and deduce all types.AC_CHECK_SIZEOF(int)AC_CHECK_SIZEOF(short)AC_CHECK_SIZEOF(char)AC_MSG_CHECKING(for type equivalent to int8_t)case "$ac_cv_sizeof_char" in1) acx_cv_type_int8_t=char ;;*) AC_MSG_ERROR([no 8-bit type, please report a bug])esacAC_MSG_RESULT($acx_cv_type_int8_t)AC_MSG_CHECKING(for type equivalent to int16_t)case "$ac_cv_sizeof_int:$ac_cv_sizeof_short" in2:*) acx_cv_type_int16_t=int ;;*:2) acx_cv_type_int16_t=short ;;*) AC_MSG_ERROR([no 16-bit type, please report a bug])esacAC_MSG_RESULT($acx_cv_type_int16_t)AC_MSG_CHECKING(for type equivalent to int32_t)case "$ac_cv_sizeof_int:$ac_cv_sizeof_long" in4:*) acx_cv_type_int32_t=int ;;*:4) acx_cv_type_int32_t=long ;;*) AC_MSG_ERROR([no 32-bit type, please report a bug])esacAC_MSG_RESULT($acx_cv_type_int32_t)fi# These tests are here to make the output prettierif test "$ac_cv_type_uint64_t" != yes && test "$ac_cv_type_u_int64_t" != yes; thencase "$ac_cv_sizeof_long" in8) acx_cv_type_int64_t=long ;;esacAC_MSG_CHECKING(for type equivalent to int64_t)AC_MSG_RESULT(${acx_cv_type_int64_t-'using preprocessor symbols'})fi# Now we can use the above typesif test "$ac_cv_type_uintptr_t" != yes; thenAC_MSG_CHECKING(for type equivalent to intptr_t)case $ac_cv_sizeof_void_p in2) acx_cv_type_intptr_t=int16_t ;;4) acx_cv_type_intptr_t=int32_t ;;8) acx_cv_type_intptr_t=int64_t ;;*) AC_MSG_ERROR([no equivalent for intptr_t, please report a bug])esacAC_MSG_RESULT($acx_cv_type_intptr_t)fi# ----------------- done all checks, emit header -------------AC_CONFIG_COMMANDS(_GCC_STDINT_H, [if test "$GCC" = yes; thenecho "/* generated for " `$CC --version | sed 1q` "*/" > tmp-stdint.helseecho "/* generated for $CC */" > tmp-stdint.hfised 's/^ *//' >> tmp-stdint.h <<EOF#ifndef GCC_GENERATED_STDINT_H#define GCC_GENERATED_STDINT_H 1#include <sys/types.h>EOFif test "$acx_cv_header_stdint" != stdint.h; thenecho "#include <stddef.h>" >> tmp-stdint.hfiif test "$acx_cv_header_stdint" != stddef.h; thenecho "#include <$acx_cv_header_stdint>" >> tmp-stdint.hfised 's/^ *//' >> tmp-stdint.h <<EOF/* glibc uses these symbols as guards to prevent redefinitions. */#ifdef __int8_t_defined#define _INT8_T#define _INT16_T#define _INT32_T#endif#ifdef __uint32_t_defined#define _UINT32_T#endifEOF# ----------------- done header, emit basic int types -------------if test "$acx_cv_header_stdint" = stddef.h; thensed 's/^ *//' >> tmp-stdint.h <<EOF#ifndef _UINT8_T#define _UINT8_T#ifndef __uint8_t_defined#define __uint8_t_defined#ifndef uint8_ttypedef unsigned $acx_cv_type_int8_t uint8_t;#endif#endif#endif#ifndef _UINT16_T#define _UINT16_T#ifndef __uint16_t_defined#define __uint16_t_defined#ifndef uint16_ttypedef unsigned $acx_cv_type_int16_t uint16_t;#endif#endif#endif#ifndef _UINT32_T#define _UINT32_T#ifndef __uint32_t_defined#define __uint32_t_defined#ifndef uint32_ttypedef unsigned $acx_cv_type_int32_t uint32_t;#endif#endif#endif#ifndef _INT8_T#define _INT8_T#ifndef __int8_t_defined#define __int8_t_defined#ifndef int8_ttypedef $acx_cv_type_int8_t int8_t;#endif#endif#endif#ifndef _INT16_T#define _INT16_T#ifndef __int16_t_defined#define __int16_t_defined#ifndef int16_ttypedef $acx_cv_type_int16_t int16_t;#endif#endif#endif#ifndef _INT32_T#define _INT32_T#ifndef __int32_t_defined#define __int32_t_defined#ifndef int32_ttypedef $acx_cv_type_int32_t int32_t;#endif#endif#endifEOFelif test "$ac_cv_type_u_int32_t" = yes; thensed 's/^ *//' >> tmp-stdint.h <<EOF/* int8_t int16_t int32_t defined by inet code, we do the u_intXX types */#ifndef _INT8_T#define _INT8_T#endif#ifndef _INT16_T#define _INT16_T#endif#ifndef _INT32_T#define _INT32_T#endif#ifndef _UINT8_T#define _UINT8_T#ifndef __uint8_t_defined#define __uint8_t_defined#ifndef uint8_ttypedef u_int8_t uint8_t;#endif#endif#endif#ifndef _UINT16_T#define _UINT16_T#ifndef __uint16_t_defined#define __uint16_t_defined#ifndef uint16_ttypedef u_int16_t uint16_t;#endif#endif#endif#ifndef _UINT32_T#define _UINT32_T#ifndef __uint32_t_defined#define __uint32_t_defined#ifndef uint32_ttypedef u_int32_t uint32_t;#endif#endif#endifEOFelsesed 's/^ *//' >> tmp-stdint.h <<EOF/* Some systems have guard macros to prevent redefinitions, define them. */#ifndef _INT8_T#define _INT8_T#endif#ifndef _INT16_T#define _INT16_T#endif#ifndef _INT32_T#define _INT32_T#endif#ifndef _UINT8_T#define _UINT8_T#endif#ifndef _UINT16_T#define _UINT16_T#endif#ifndef _UINT32_T#define _UINT32_T#endifEOFfi# ------------- done basic int types, emit int64_t types ------------if test "$ac_cv_type_uint64_t" = yes; thensed 's/^ *//' >> tmp-stdint.h <<EOF/* system headers have good uint64_t and int64_t */#ifndef _INT64_T#define _INT64_T#endif#ifndef _UINT64_T#define _UINT64_T#endifEOFelif test "$ac_cv_type_u_int64_t" = yes; thensed 's/^ *//' >> tmp-stdint.h <<EOF/* system headers have an u_int64_t (and int64_t) */#ifndef _INT64_T#define _INT64_T#endif#ifndef _UINT64_T#define _UINT64_T#ifndef __uint64_t_defined#define __uint64_t_defined#ifndef uint64_ttypedef u_int64_t uint64_t;#endif#endif#endifEOFelif test -n "$acx_cv_type_int64_t"; thensed 's/^ *//' >> tmp-stdint.h <<EOF/* architecture has a 64-bit type, $acx_cv_type_int64_t */#ifndef _INT64_T#define _INT64_T#ifndef int64_ttypedef $acx_cv_type_int64_t int64_t;#endif#endif#ifndef _UINT64_T#define _UINT64_T#ifndef __uint64_t_defined#define __uint64_t_defined#ifndef uint64_ttypedef unsigned $acx_cv_type_int64_t uint64_t;#endif#endif#endifEOFelsesed 's/^ *//' >> tmp-stdint.h <<EOF/* some common heuristics for int64_t, using compiler-specific tests */#if defined __STDC_VERSION__ && (__STDC_VERSION__-0) >= 199901L#ifndef _INT64_T#define _INT64_T#ifndef __int64_t_defined#ifndef int64_ttypedef long long int64_t;#endif#endif#endif#ifndef _UINT64_T#define _UINT64_T#ifndef uint64_ttypedef unsigned long long uint64_t;#endif#endif#elif defined __GNUC__ && defined (__STDC__) && __STDC__-0/* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 anddoes not implement __extension__. But that compiler doesn't define__GNUC_MINOR__. */# if __GNUC__ < 2 || (__NeXT__ && !__GNUC_MINOR__)# define __extension__# endif# ifndef _INT64_T# define _INT64_T# ifndef int64_t__extension__ typedef long long int64_t;# endif# endif# ifndef _UINT64_T# define _UINT64_T# ifndef uint64_t__extension__ typedef unsigned long long uint64_t;# endif# endif#elif !defined __STRICT_ANSI__# if defined _MSC_VER || defined __WATCOMC__ || defined __BORLANDC__# ifndef _INT64_T# define _INT64_T# ifndef int64_ttypedef __int64 int64_t;# endif# endif# ifndef _UINT64_T# define _UINT64_T# ifndef uint64_ttypedef unsigned __int64 uint64_t;# endif# endif# endif /* compiler */#endif /* ANSI version */EOFfi# ------------- done int64_t types, emit intptr types ------------if test "$ac_cv_type_uintptr_t" != yes; thensed 's/^ *//' >> tmp-stdint.h <<EOF/* Define intptr_t based on sizeof(void*) = $ac_cv_sizeof_void_p */#ifndef __uintptr_t_defined#ifndef uintptr_ttypedef u$acx_cv_type_intptr_t uintptr_t;#endif#endif#ifndef __intptr_t_defined#ifndef intptr_ttypedef $acx_cv_type_intptr_t intptr_t;#endif#endifEOFfi# ------------- done intptr types, emit int_least types ------------if test "$ac_cv_type_int_least32_t" != yes; thensed 's/^ *//' >> tmp-stdint.h <<EOF/* Define int_least types */typedef int8_t int_least8_t;typedef int16_t int_least16_t;typedef int32_t int_least32_t;#ifdef _INT64_Ttypedef int64_t int_least64_t;#endiftypedef uint8_t uint_least8_t;typedef uint16_t uint_least16_t;typedef uint32_t uint_least32_t;#ifdef _UINT64_Ttypedef uint64_t uint_least64_t;#endifEOFfi# ------------- done intptr types, emit int_fast types ------------if test "$ac_cv_type_int_fast32_t" != yes; thendnl NOTE: The following code assumes that sizeof (int) > 1.dnl Fix when strange machines are reported.sed 's/^ *//' >> tmp-stdint.h <<EOF/* Define int_fast types. short is often slow */typedef int8_t int_fast8_t;typedef int int_fast16_t;typedef int32_t int_fast32_t;#ifdef _INT64_Ttypedef int64_t int_fast64_t;#endiftypedef uint8_t uint_fast8_t;typedef unsigned int uint_fast16_t;typedef uint32_t uint_fast32_t;#ifdef _UINT64_Ttypedef uint64_t uint_fast64_t;#endifEOFfiif test "$ac_cv_type_uintmax_t" != yes; thensed 's/^ *//' >> tmp-stdint.h <<EOF/* Define intmax based on what we found */#ifndef intmax_t#ifdef _INT64_Ttypedef int64_t intmax_t;#elsetypedef long intmax_t;#endif#endif#ifndef uintmax_t#ifdef _UINT64_Ttypedef uint64_t uintmax_t;#elsetypedef unsigned long uintmax_t;#endif#endifEOFfised 's/^ *//' >> tmp-stdint.h <<EOF#endif /* GCC_GENERATED_STDINT_H */EOFif test -r ]_GCC_STDINT_H[ && cmp -s tmp-stdint.h ]_GCC_STDINT_H[; thenrm -f tmp-stdint.helsemv -f tmp-stdint.h ]_GCC_STDINT_H[fi], [GCC="$GCC"CC="$CC"acx_cv_header_stdint="$acx_cv_header_stdint"acx_cv_type_int8_t="$acx_cv_type_int8_t"acx_cv_type_int16_t="$acx_cv_type_int16_t"acx_cv_type_int32_t="$acx_cv_type_int32_t"acx_cv_type_int64_t="$acx_cv_type_int64_t"acx_cv_type_intptr_t="$acx_cv_type_intptr_t"ac_cv_type_uintmax_t="$ac_cv_type_uintmax_t"ac_cv_type_uintptr_t="$ac_cv_type_uintptr_t"ac_cv_type_uint64_t="$ac_cv_type_uint64_t"ac_cv_type_u_int64_t="$ac_cv_type_u_int64_t"ac_cv_type_u_int32_t="$ac_cv_type_u_int32_t"ac_cv_type_int_least32_t="$ac_cv_type_int_least32_t"ac_cv_type_int_fast32_t="$ac_cv_type_int_fast32_t"ac_cv_sizeof_void_p="$ac_cv_sizeof_void_p"])])