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])] dnl dnl the "ISO C9X: 7.18 Integer types " section requires the dnl existence of an include file 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 . In other enviroments dnl we can use the inet-types in 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 " or "#include " 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 " to obtain the stdint-types. dnl dnl Remember, if the system already had a valid , the generated dnl file will include it directly. No need for fuzzy HAVE_STDINT_H things... dnl dnl @author Guido Draheim , Paolo Bonzini 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 #include <$i>]) AC_CHECK_TYPE(uintptr_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include #include <$i>]) AC_CHECK_TYPE(int_least32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include #include <$i>]) AC_CHECK_TYPE(int_fast32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include #include <$i>]) AC_CHECK_TYPE(uint64_t,,[acx_cv_header_stdint_kind="(lacks uint64_t)"], [#include #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 #include <$i>]) AC_CHECK_TYPE(uint64_t,,,[#include #include <$i>]) AC_CHECK_TYPE(uintptr_t,,,[#include #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 #include <$i>]) AC_CHECK_TYPE(u_int64_t,,,[#include #include <$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 # ----------------- 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 # ----------------- 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 $CC */" > tmp-stdint.h fi sed 's/^ *//' >> tmp-stdint.h < EOF if test "$acx_cv_header_stdint" != stdint.h; then echo "#include " >> 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 <> tmp-stdint.h <> tmp-stdint.h <> tmp-stdint.h <> tmp-stdint.h <> tmp-stdint.h <> tmp-stdint.h <> tmp-stdint.h <= 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 <> tmp-stdint.h < 1. dnl Fix when strange machines are reported. sed 's/^ *//' >> tmp-stdint.h <> tmp-stdint.h <> tmp-stdint.h <