diff options
Diffstat (limited to 'config/stdint.m4')
| -rw-r--r-- | config/stdint.m4 | 510 |
1 files changed, 39 insertions, 471 deletions
diff --git a/config/stdint.m4 b/config/stdint.m4 index 025ffad..ffb759d 100644 --- a/config/stdint.m4 +++ b/config/stdint.m4 @@ -1,440 +1,51 @@ -dnl @synopsis GCC_HEADER_STDINT [( HEADER-TO-GENERATE [, HEADERS-TO-CHECK])] -dnl -dnl the "ISO C9X: 7.18 Integer types <stdint.h>" section requires the -dnl existence of an include file <stdint.h> that defines a set of -dnl typedefs, especially uint8_t,int32_t,uintptr_t. -dnl Many older installations will not provide this file, but some will -dnl have the very same definitions in <inttypes.h>. In other enviroments -dnl we can use the inet-types in <sys/types.h> which would define the -dnl typedefs int8_t and u_int8_t respectivly. -dnl -dnl This macros will create a local "_stdint.h" or the headerfile given as -dnl an argument. In many cases that file will pick the definition from a -dnl "#include <stdint.h>" or "#include <inttypes.h>" statement, while -dnl 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_t -dnl int_least32_t.. int_fast32_t.. intmax_t -dnl which may or may not rely on the definitions of other files. -dnl -dnl 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 it -dnl into the generated header (to match the tests with the generated file). -dnl Hopefully this is not a big annoyance. -dnl -dnl If your installed header files require the stdint-types you will want to -dnl create an installable file mylib-int.h that all your other installable -dnl header may include. So, for a library package named "mylib", just use -dnl GCC_HEADER_STDINT(mylib-int.h) -dnl in configure.in and install that header file in Makefile.am along with -dnl the other headers (mylib.h). The mylib-specific headers can simply -dnl use "#include <mylib-int.h>" to obtain the stdint-types. -dnl -dnl Remember, if the system already had a valid <stdint.h>, the generated -dnl file will include it directly. No need for fuzzy HAVE_STDINT_H things... -dnl -dnl @author Guido Draheim <guidod@gmx.de>, Paolo Bonzini <bonzini@gnu.org> +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])]) 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.h -acx_cv_header_stdint_kind="(already complete)" -for i in stdint.h $inttype_headers; do - unset ac_cv_type_uintptr_t - unset ac_cv_type_uintmax_t - unset ac_cv_type_int_least32_t - unset ac_cv_type_int_fast32_t - unset 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 <$i>]) - break -done -if test "$acx_cv_header_stdint" = stddef.h; then - acx_cv_header_stdint_kind="(lacks uintmax_t)" - for i in stdint.h $inttype_headers; do - unset ac_cv_type_uintptr_t - unset ac_cv_type_uint32_t - unset 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 <$i>]) - break - done -fi -if test "$acx_cv_header_stdint" = stddef.h; then - acx_cv_header_stdint_kind="(u_intXX_t style)" - for i in sys/types.h $inttype_headers; do - unset ac_cv_type_u_int32_t - unset 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>]) - break - done -fi -if test "$acx_cv_header_stdint" = stddef.h; then - acx_cv_header_stdint_kind="(using manual detection)" -fi - -test -z "$ac_cv_type_uintptr_t" && ac_cv_type_uintptr_t=no -test -z "$ac_cv_type_uint64_t" && ac_cv_type_uint64_t=no -test -z "$ac_cv_type_u_int64_t" && ac_cv_type_u_int64_t=no -test -z "$ac_cv_type_int_least32_t" && ac_cv_type_int_least32_t=no -test -z "$ac_cv_type_int_fast32_t" && ac_cv_type_int_fast32_t=no +[AC_REQUIRE([GCC_STDINT_TYPES]) +AC_CHECK_TYPES([int_least32_t, int_fast32_t],,,[#include <sys/types.h> +#ifdef HAVE_STDINT_H +#include <stdint.h> +#endif +#ifdef HAVE_INTTYPES_H +#include <inttypes.h> +#endif]) # ----------------- Summarize what we found so far -AC_MSG_CHECKING([what to include in _GCC_STDINT_H]) - -case `AS_BASENAME(_GCC_STDINT_H)` in - stdint.h) AC_MSG_WARN([are you sure you want it there?]) ;; - inttypes.h) AC_MSG_WARN([are you sure you want it there?]) ;; - *) ;; -esac - -AC_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:$ac_cv_type_uintptr_t" in - stddef.h:* | *:no) AC_CHECK_SIZEOF(void *) ;; -esac - -# Lacking an uint64_t? Test size of long -case "$acx_cv_header_stdint:$ac_cv_type_uint64_t:$ac_cv_type_u_int64_t" in - stddef.h:*:* | *:no:no) AC_CHECK_SIZEOF(long) ;; -esac - -if 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" in - 1) acx_cv_type_int8_t=char ;; - *) AC_MSG_ERROR(no 8-bit type, please report a bug) - esac - AC_MSG_RESULT($acx_cv_type_int8_t) - - AC_MSG_CHECKING(for type equivalent to int16_t) - case "$ac_cv_sizeof_int:$ac_cv_sizeof_short" in - 2:*) acx_cv_type_int16_t=int ;; - *:2) acx_cv_type_int16_t=short ;; - *) AC_MSG_ERROR(no 16-bit type, please report a bug) - esac - AC_MSG_RESULT($acx_cv_type_int16_t) - - AC_MSG_CHECKING(for type equivalent to int32_t) - case "$ac_cv_sizeof_int:$ac_cv_sizeof_long" in - 4:*) acx_cv_type_int32_t=int ;; - *:4) acx_cv_type_int32_t=long ;; - *) AC_MSG_ERROR(no 32-bit type, please report a bug) - esac - AC_MSG_RESULT($acx_cv_type_int32_t) -fi - -# These tests are here to make the output prettier - -if test "$ac_cv_type_uint64_t" != yes && test "$ac_cv_type_u_int64_t" != yes; then - case "$ac_cv_sizeof_long" in - 8) acx_cv_type_int64_t=long ;; - esac - AC_MSG_CHECKING(for type equivalent to int64_t) - AC_MSG_RESULT(${acx_cv_type_int64_t-'using preprocessor symbols'}) -fi - -# Now we can use the above types - -if test "$ac_cv_type_uintptr_t" != yes; then - AC_MSG_CHECKING(for type equivalent to intptr_t) - case $ac_cv_sizeof_void_p in - 2) acx_cv_type_intptr_t=int16_t ;; - 4) acx_cv_type_intptr_t=int32_t ;; - 8) acx_cv_type_intptr_t=int64_t ;; - *) AC_MSG_ERROR(no equivalent for intptr_t, please report a bug) - esac - AC_MSG_RESULT($acx_cv_type_intptr_t) -fi +m4_define([_GCC_STDINT_H], m4_ifval($1, $1, _stdint.h)) +m4_if(m4_bmatch(m4_quote(/_GCC_STDINT_H), + /stdint\.h$, bad, + /inttypes\.h$, bad, ok), bad, + [m4_fatal([cannot overwrite ]m4_quote(_GCC_STDINT_H))]) # ----------------- done all checks, emit header ------------- AC_CONFIG_COMMANDS(_GCC_STDINT_H, [ -if test "$GCC" = yes; then - echo "/* generated for " `$CC --version | sed 1q` "*/" > tmp-stdint.h -else - echo "/* generated for $CC */" > tmp-stdint.h -fi - -sed 's/^ *//' >> tmp-stdint.h <<EOF - - #ifndef GCC_GENERATED_STDINT_H - #define GCC_GENERATED_STDINT_H 1 - - #include <sys/types.h> -EOF - -if test "$acx_cv_header_stdint" != stdint.h; then - echo "#include <stddef.h>" >> tmp-stdint.h -fi -if test "$acx_cv_header_stdint" != stddef.h; then - echo "#include <$acx_cv_header_stdint>" >> tmp-stdint.h -fi - -sed '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 - #endif - +cat >> tmp-stdint.h <<EOF +#ifndef GCC_GENERATED_STDINT_H +#define GCC_GENERATED_STDINT_H 1 + +#include "config.h" +#include <sys/types.h> +#ifdef HAVE_STDINT_H +#include <stdint.h> +#endif +#ifdef HAVE_INTTYPES_H +#include <inttypes.h> +#endif EOF -# ----------------- done header, emit basic int types ------------- -if test "$acx_cv_header_stdint" = stddef.h; then - sed 's/^ *//' >> tmp-stdint.h <<EOF - - #ifndef _UINT8_T - #define _UINT8_T - #ifndef __uint8_t_defined - #define __uint8_t_defined - typedef unsigned $acx_cv_type_int8_t uint8_t; - #endif - #endif - - #ifndef _UINT16_T - #define _UINT16_T - #ifndef __uint16_t_defined - #define __uint16_t_defined - typedef unsigned $acx_cv_type_int16_t uint16_t; - #endif - #endif - - #ifndef _UINT32_T - #define _UINT32_T - #ifndef __uint32_t_defined - #define __uint32_t_defined - typedef unsigned $acx_cv_type_int32_t uint32_t; - #endif - #endif - - #ifndef _INT8_T - #define _INT8_T - #ifndef __int8_t_defined - #define __int8_t_defined - typedef $acx_cv_type_int8_t int8_t; - #endif - #endif - - #ifndef _INT16_T - #define _INT16_T - #ifndef __int16_t_defined - #define __int16_t_defined - typedef $acx_cv_type_int16_t int16_t; - #endif - #endif - - #ifndef _INT32_T - #define _INT32_T - #ifndef __int32_t_defined - #define __int32_t_defined - typedef $acx_cv_type_int32_t int32_t; - #endif - #endif -EOF -elif test "$ac_cv_type_u_int32_t" = yes; then - sed '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 - typedef u_int8_t uint8_t; - #endif - #endif - - #ifndef _UINT16_T - #define _UINT16_T - #ifndef __uint16_t_defined - #define __uint16_t_defined - typedef u_int16_t uint16_t; - #endif - #endif - - #ifndef _UINT32_T - #define _UINT32_T - #ifndef __uint32_t_defined - #define __uint32_t_defined - typedef u_int32_t uint32_t; - #endif - #endif -EOF -else - sed '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 - #endif -EOF -fi - -# ------------- done basic int types, emit int64_t types ------------ -if test "$ac_cv_type_uint64_t" = yes; then - sed 's/^ *//' >> tmp-stdint.h <<EOF - - /* system headers have good uint64_t and int64_t */ - #ifndef _INT64_T - #define _INT64_T - #endif - #ifndef _UINT64_T - #define _UINT64_T - #endif -EOF -elif test "$ac_cv_type_u_int64_t" = yes; then - sed '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 - typedef u_int64_t uint64_t; - #endif - #endif -EOF -elif test -n "$acx_cv_type_int64_t"; then - sed 's/^ *//' >> tmp-stdint.h <<EOF - - /* architecture has a 64-bit type, $acx_cv_type_int64_t */ - #ifndef _INT64_T - #define _INT64_T - typedef $acx_cv_type_int64_t int64_t; - #endif - #ifndef _UINT64_T - #define _UINT64_T - #ifndef __uint64_t_defined - #define __uint64_t_defined - typedef unsigned $acx_cv_type_int64_t uint64_t; - #endif - #endif -EOF -else - sed 's/^ *//' >> tmp-stdint.h <<EOF - - /* some common heuristics for int64_t, using compiler-specific tests */ - #if defined __STDC_VERSION__ && (__STDC_VERSION__-0) >= 199901L - #ifndef _INT64_T - #define _INT64_T - #ifndef __int64_t_defined - typedef long long int64_t; - #endif - #endif - #ifndef _UINT64_T - #define _UINT64_T - typedef unsigned long long uint64_t; - #endif - - #elif defined __GNUC__ && defined (__STDC__) && __STDC__-0 - /* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and - does not implement __extension__. But that compiler doesn't define - __GNUC_MINOR__. */ - # if __GNUC__ < 2 || (__NeXT__ && !__GNUC_MINOR__) - # define __extension__ - # endif - - # ifndef _INT64_T - # define _INT64_T - __extension__ typedef long long int64_t; - # endif - # ifndef _UINT64_T - # define _UINT64_T - __extension__ typedef unsigned long long uint64_t; - # endif - - #elif !defined __STRICT_ANSI__ - # if defined _MSC_VER || defined __WATCOMC__ || defined __BORLANDC__ - - # ifndef _INT64_T - # define _INT64_T - typedef __int64 int64_t; - # endif - # ifndef _UINT64_T - # define _UINT64_T - typedef unsigned __int64 uint64_t; - # endif - # endif /* compiler */ - - #endif /* ANSI version */ -EOF -fi - -# ------------- done int64_t types, emit intptr types ------------ -if test "$ac_cv_type_uintptr_t" != yes; then - sed 's/^ *//' >> tmp-stdint.h <<EOF - - /* Define intptr_t based on sizeof(void*) = $ac_cv_sizeof_void_p */ - #ifndef __uintptr_t_defined - typedef u$acx_cv_type_intptr_t uintptr_t; - #endif - #ifndef __intptr_t_defined - typedef $acx_cv_type_intptr_t intptr_t; - #endif -EOF -fi - -# ------------- done intptr types, emit int_least types ------------ if test "$ac_cv_type_int_least32_t" != yes; then sed 's/^ *//' >> tmp-stdint.h <<EOF @@ -442,20 +53,15 @@ if test "$ac_cv_type_int_least32_t" != yes; then typedef int8_t int_least8_t; typedef int16_t int_least16_t; typedef int32_t int_least32_t; - #ifdef _INT64_T typedef int64_t int_least64_t; - #endif typedef uint8_t uint_least8_t; typedef uint16_t uint_least16_t; typedef uint32_t uint_least32_t; - #ifdef _UINT64_T typedef uint64_t uint_least64_t; - #endif EOF fi -# ------------- done intptr types, emit int_fast types ------------ if test "$ac_cv_type_int_fast32_t" != yes; then dnl NOTE: The following code assumes that sizeof (int) > 1. dnl Fix when strange machines are reported. @@ -465,40 +71,16 @@ if test "$ac_cv_type_int_fast32_t" != yes; then typedef int8_t int_fast8_t; typedef int int_fast16_t; typedef int32_t int_fast32_t; - #ifdef _INT64_T typedef int64_t int_fast64_t; - #endif typedef uint8_t uint_fast8_t; typedef unsigned int uint_fast16_t; typedef uint32_t uint_fast32_t; - #ifdef _UINT64_T typedef uint64_t uint_fast64_t; - #endif -EOF -fi - -if test "$ac_cv_type_uintmax_t" != yes; then - sed 's/^ *//' >> tmp-stdint.h <<EOF - - /* Define intmax based on what we found */ - #ifdef _INT64_T - typedef int64_t intmax_t; - #else - typedef long intmax_t; - #endif - #ifdef _UINT64_T - typedef uint64_t uintmax_t; - #else - typedef unsigned long uintmax_t; - #endif EOF fi -sed 's/^ *//' >> tmp-stdint.h <<EOF - - #endif /* GCC_GENERATED_STDINT_H */ -EOF +echo '#endif /* GCC_GENERATED_STDINT_H */' >> tmp-stdint.h if test -r ]_GCC_STDINT_H[ && cmp -s tmp-stdint.h ]_GCC_STDINT_H[; then rm -f tmp-stdint.h @@ -507,22 +89,8 @@ else 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" ]) ]) |