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 <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_HEADER_STDINT],
-[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])
-
-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))])
+[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
+
+# ----------------- 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, [
-cat > $tmp/_GCC_STDINT_H <<EOF
-#ifndef GCC_GENERATED_STDINT_H
-#define GCC_GENERATED_STDINT_H 1
-
-#include "config.h"
-#include <sys/types.h>
-#ifdef HAVE_STDINT_H
-#include <stdint.h>
-#endif
-#ifdef HAVE_INTTYPES_H
-#include <inttypes.h>
-#endif
+if test "$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
+
+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/^ *//' >> $tmp/_GCC_STDINT_H <<EOF
+ sed 's/^ *//' >> tmp-stdint.h <<EOF
/* Define int_least types */
typedef int8_t int_least8_t;
typedef int16_t int_least16_t;
typedef int32_t int_least32_t;
+ #ifdef _INT64_T
typedef int64_t int_least64_t;
+ #endif
typedef uint8_t uint_least8_t;
typedef uint16_t uint_least16_t;
typedef uint32_t uint_least32_t;
+ #ifdef _UINT64_T
typedef uint64_t uint_least64_t;
+ #endif
EOF
fi
+# ------------- done intptr types, emit int_fast types ------------
if test "$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.
- sed 's/^ *//' >> $tmp/_GCC_STDINT_H <<EOF
+ 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_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
-echo '@%:@endif /* GCC_GENERATED_STDINT_H */' >> $tmp/_GCC_STDINT_H
+if test "$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
-if test -r _GCC_STDINT_H && cmp -s $tmp/_GCC_STDINT_H _GCC_STDINT_H; then
- rm -f $tmp/_GCC_STDINT_H
+if test -r ]_GCC_STDINT_H[ && cmp -s tmp-stdint.h ]_GCC_STDINT_H[; then
+ rm -f tmp-stdint.h
else
- mv -f $tmp/_GCC_STDINT_H _GCC_STDINT_H
+ mv -f tmp-stdint.h ]_GCC_STDINT_H[
fi
], [
+GCC="$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"
])
])
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