[binutils.git] / config / stdint.m4

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 <[email protected]>, Paolo Bonzini <[email protected]>

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

# ----------------- 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

  #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-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-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

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-stdint.h ]_GCC_STDINT_H[; then
  rm -f tmp-stdint.h
else
  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"
])

])
Commit	Line	Data
8eb2f3f0 PB	1	dnl @synopsis GCC_HEADER_STDINT [( HEADER-TO-GENERATE [, HEADERS-TO-CHECK])]
	2	dnl
	3	dnl the "ISO C9X: 7.18 Integer types <stdint.h>" section requires the
	4	dnl existence of an include file <stdint.h> that defines a set of
	5	dnl typedefs, especially uint8_t,int32_t,uintptr_t.
	6	dnl Many older installations will not provide this file, but some will
	7	dnl have the very same definitions in <inttypes.h>. In other enviroments
	8	dnl we can use the inet-types in <sys/types.h> which would define the
	9	dnl typedefs int8_t and u_int8_t respectivly.
	10	dnl
	11	dnl This macros will create a local "_stdint.h" or the headerfile given as
	12	dnl an argument. In many cases that file will pick the definition from a
	13	dnl "#include <stdint.h>" or "#include <inttypes.h>" statement, while
	14	dnl in other environments it will provide the set of basic 'stdint's defined:
	15	dnl int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,intptr_t,uintptr_t
	16	dnl int_least32_t.. int_fast32_t.. intmax_t
	17	dnl which may or may not rely on the definitions of other files.
	18	dnl
	19	dnl Sometimes the stdint.h or inttypes.h headers conflict with sys/types.h,
	20	dnl so we test the headers together with sys/types.h and always include it
	21	dnl into the generated header (to match the tests with the generated file).
	22	dnl Hopefully this is not a big annoyance.
	23	dnl
	24	dnl If your installed header files require the stdint-types you will want to
	25	dnl create an installable file mylib-int.h that all your other installable
	26	dnl header may include. So, for a library package named "mylib", just use
	27	dnl GCC_HEADER_STDINT(mylib-int.h)
	28	dnl in configure.in and install that header file in Makefile.am along with
	29	dnl the other headers (mylib.h). The mylib-specific headers can simply
	30	dnl use "#include <mylib-int.h>" to obtain the stdint-types.
	31	dnl
	32	dnl Remember, if the system already had a valid <stdint.h>, the generated
	33	dnl file will include it directly. No need for fuzzy HAVE_STDINT_H things...
	34	dnl
	35	dnl @author Guido Draheim <[email protected]>, Paolo Bonzini <[email protected]>
	36
	37	AC_DEFUN([GCC_HEADER_STDINT],
	38	[m4_define(_GCC_STDINT_H, m4_ifval($1, $1, _stdint.h))
	39
	40	inttype_headers=`echo inttypes.h sys/inttypes.h $2 \| sed -e 's/,/ /g'`
	41
	42	acx_cv_header_stdint=stddef.h
	43	acx_cv_header_stdint_kind="(already complete)"
	44	for i in stdint.h $inttype_headers; do
	45	unset ac_cv_type_uintptr_t
	46	unset ac_cv_type_uintmax_t
	47	unset ac_cv_type_int_least32_t
	48	unset ac_cv_type_int_fast32_t
	49	unset ac_cv_type_uint64_t
	50	_AS_ECHO_N([looking for a compliant stdint.h in $i, ])
	51	AC_CHECK_TYPE(uintmax_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
	52	#include <$i>])
	53	AC_CHECK_TYPE(uintptr_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
	54	#include <$i>])
	55	AC_CHECK_TYPE(int_least32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
	56	#include <$i>])
	57	AC_CHECK_TYPE(int_fast32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
	58	#include <$i>])
	59	AC_CHECK_TYPE(uint64_t,,[acx_cv_header_stdint_kind="(lacks uint64_t)"], [#include <sys/types.h>
	60	#include <$i>])
	61	break
	62	done
	63	if test "$acx_cv_header_stdint" = stddef.h; then
1dc60eeb	64	acx_cv_header_stdint_kind="(lacks uintmax_t)"
8eb2f3f0	65	for i in stdint.h $inttype_headers; do
1dc60eeb	66	unset ac_cv_type_uintptr_t
8eb2f3f0 PB	67	unset ac_cv_type_uint32_t
	68	unset ac_cv_type_uint64_t
	69	_AS_ECHO_N([looking for an incomplete stdint.h in $i, ])
	70	AC_CHECK_TYPE(uint32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
	71	#include <$i>])
1dc60eeb PB	72	AC_CHECK_TYPE(uint64_t,,,[#include <sys/types.h>
	73	#include <$i>])
	74	AC_CHECK_TYPE(uintptr_t,,,[#include <sys/types.h>
8eb2f3f0 PB	75	#include <$i>])
	76	break
	77	done
	78	fi
	79	if test "$acx_cv_header_stdint" = stddef.h; then
	80	acx_cv_header_stdint_kind="(u_intXX_t style)"
	81	for i in sys/types.h $inttype_headers; do
	82	unset ac_cv_type_u_int32_t
	83	unset ac_cv_type_u_int64_t
	84	_AS_ECHO_N([looking for u_intXX_t types in $i, ])
	85	AC_CHECK_TYPE(u_int32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
	86	#include <$i>])
1dc60eeb	87	AC_CHECK_TYPE(u_int64_t,,,[#include <sys/types.h>
8eb2f3f0 PB	88	#include <$i>])
	89	break
	90	done
	91	fi
	92	if test "$acx_cv_header_stdint" = stddef.h; then
	93	acx_cv_header_stdint_kind="(using manual detection)"
	94	fi
	95
	96	test -z "$ac_cv_type_uintptr_t" && ac_cv_type_uintptr_t=no
	97	test -z "$ac_cv_type_uint64_t" && ac_cv_type_uint64_t=no
	98	test -z "$ac_cv_type_u_int64_t" && ac_cv_type_u_int64_t=no
	99	test -z "$ac_cv_type_int_least32_t" && ac_cv_type_int_least32_t=no
	100	test -z "$ac_cv_type_int_fast32_t" && ac_cv_type_int_fast32_t=no
	101
	102	# ----------------- Summarize what we found so far
	103
	104	AC_MSG_CHECKING([what to include in _GCC_STDINT_H])
	105
	106	case `AS_BASENAME(_GCC_STDINT_H)` in
	107	stdint.h) AC_MSG_WARN([are you sure you want it there?]) ;;
	108	inttypes.h) AC_MSG_WARN([are you sure you want it there?]) ;;
	109	*) ;;
	110	esac
	111
	112	AC_MSG_RESULT($acx_cv_header_stdint $acx_cv_header_stdint_kind)
	113
	114	# ----------------- done included file, check C basic types --------
	115
	116	# Lacking an uintptr_t? Test size of void *
	117	case "$acx_cv_header_stdint:$ac_cv_type_uintptr_t" in
	118	stddef.h:* \| :no) AC_CHECK_SIZEOF(void ) ;;
	119	esac
	120
	121	# Lacking an uint64_t? Test size of long
	122	case "$acx_cv_header_stdint:$ac_cv_type_uint64_t:$ac_cv_type_u_int64_t" in
	123	stddef.h:: \| *:no:no) AC_CHECK_SIZEOF(long) ;;
	124	esac
	125
	126	if test $acx_cv_header_stdint = stddef.h; then
	127	# Lacking a good header? Test size of everything and deduce all types.
	128	AC_CHECK_SIZEOF(int)
	129	AC_CHECK_SIZEOF(short)
	130	AC_CHECK_SIZEOF(char)
	131
	132	AC_MSG_CHECKING(for type equivalent to int8_t)
	133	case "$ac_cv_sizeof_char" in
	134	1) acx_cv_type_int8_t=char ;;
	135	*) AC_MSG_ERROR(no 8-bit type, please report a bug)
	136	esac
	137	AC_MSG_RESULT($acx_cv_type_int8_t)
	138
	139	AC_MSG_CHECKING(for type equivalent to int16_t)
	140	case "$ac_cv_sizeof_int:$ac_cv_sizeof_short" in
	141	2:*) acx_cv_type_int16_t=int ;;
	142	*:2) acx_cv_type_int16_t=short ;;
	143	*) AC_MSG_ERROR(no 16-bit type, please report a bug)
	144	esac
	145	AC_MSG_RESULT($acx_cv_type_int16_t)
	146
	147	AC_MSG_CHECKING(for type equivalent to int32_t)
	148	case "$ac_cv_sizeof_int:$ac_cv_sizeof_long" in
	149	4:*) acx_cv_type_int32_t=int ;;
	150	*:4) acx_cv_type_int32_t=long ;;
	151	*) AC_MSG_ERROR(no 32-bit type, please report a bug)
152	esac
153	AC_MSG_RESULT($acx_cv_type_int32_t)
154	fi
155
156	# These tests are here to make the output prettier
157
158	if test "$ac_cv_type_uint64_t" != yes && test "$ac_cv_type_u_int64_t" != yes; then
159	case "$ac_cv_sizeof_long" in
160	8) acx_cv_type_int64_t=long ;;
161	esac
162	AC_MSG_CHECKING(for type equivalent to int64_t)
163	AC_MSG_RESULT(${acx_cv_type_int64_t-'using preprocessor symbols'})
164	fi
165
166	# Now we can use the above types
167
168	if test "$ac_cv_type_uintptr_t" != yes; then
169	AC_MSG_CHECKING(for type equivalent to intptr_t)
170	case $ac_cv_sizeof_void_p in
171	2) acx_cv_type_intptr_t=int16_t ;;
172	4) acx_cv_type_intptr_t=int32_t ;;
173	8) acx_cv_type_intptr_t=int64_t ;;
174	*) AC_MSG_ERROR(no equivalent for intptr_t, please report a bug)
175	esac
176	AC_MSG_RESULT($acx_cv_type_intptr_t)
177	fi
178
179	# ----------------- done all checks, emit header -------------
180	AC_CONFIG_COMMANDS(_GCC_STDINT_H, [
181	if test "$GCC" = yes; then
182	echo "/* generated for " `$CC --version \| sed 1q` "*/" > tmp-stdint.h
183	else
184	echo "/* generated for $CC */" > tmp-stdint.h
185	fi
186
187	sed 's/^ *//' >> tmp-stdint.h <<EOF
188
189	#ifndef GCC_GENERATED_STDINT_H
190	#define GCC_GENERATED_STDINT_H 1
191
192	#include <sys/types.h>
193	EOF
194
195	if test "$acx_cv_header_stdint" != stdint.h; then
196	echo "#include <stddef.h>" >> tmp-stdint.h
197	fi
198	if test "$acx_cv_header_stdint" != stddef.h; then
199	echo "#include <$acx_cv_header_stdint>" >> tmp-stdint.h
200	fi
201
202	sed 's/^ *//' >> tmp-stdint.h <<EOF
203	/* glibc uses these symbols as guards to prevent redefinitions. */
204	#ifdef __int8_t_defined
205	#define _INT8_T
206	#define _INT16_T
207	#define _INT32_T
208	#endif
209	#ifdef __uint32_t_defined
210	#define _UINT32_T
211	#endif
212
213	EOF
214
215	# ----------------- done header, emit basic int types -------------
216	if test "$acx_cv_header_stdint" = stddef.h; then
217	sed 's/^ *//' >> tmp-stdint.h <<EOF
218
219	#ifndef _UINT8_T
220	#define _UINT8_T
9e785243 PB	221	#ifndef __uint8_t_defined
9e785243 PB	222	#define __uint8_t_defined
8eb2f3f0 PB	223	typedef unsigned $acx_cv_type_int8_t uint8_t;
8eb2f3f0 PB	224	#endif
9e785243	225	#endif
8eb2f3f0 PB	226
	227	#ifndef _UINT16_T
	228	#define _UINT16_T
9e785243 PB	229	#ifndef __uint16_t_defined
9e785243 PB	230	#define __uint16_t_defined
8eb2f3f0 PB	231	typedef unsigned $acx_cv_type_int16_t uint16_t;
8eb2f3f0 PB	232	#endif
9e785243	233	#endif
8eb2f3f0 PB	234
	235	#ifndef _UINT32_T
	236	#define _UINT32_T
9e785243 PB	237	#ifndef __uint32_t_defined
9e785243 PB	238	#define __uint32_t_defined
8eb2f3f0 PB	239	typedef unsigned $acx_cv_type_int32_t uint32_t;
8eb2f3f0 PB	240	#endif
9e785243	241	#endif
8eb2f3f0 PB	242
	243	#ifndef _INT8_T
	244	#define _INT8_T
9e785243 PB	245	#ifndef __int8_t_defined
9e785243 PB	246	#define __int8_t_defined
8eb2f3f0 PB	247	typedef $acx_cv_type_int8_t int8_t;
8eb2f3f0 PB	248	#endif
9e785243	249	#endif
8eb2f3f0 PB	250
	251	#ifndef _INT16_T
	252	#define _INT16_T
9e785243 PB	253	#ifndef __int16_t_defined
9e785243 PB	254	#define __int16_t_defined
8eb2f3f0 PB	255	typedef $acx_cv_type_int16_t int16_t;
8eb2f3f0 PB	256	#endif
9e785243	257	#endif
8eb2f3f0 PB	258
	259	#ifndef _INT32_T
	260	#define _INT32_T
9e785243 PB	261	#ifndef __int32_t_defined
9e785243 PB	262	#define __int32_t_defined
8eb2f3f0 PB	263	typedef $acx_cv_type_int32_t int32_t;
8eb2f3f0 PB	264	#endif
9e785243	265	#endif
8eb2f3f0 PB	266	EOF
	267	elif test "$ac_cv_type_u_int32_t" = yes; then
	268	sed 's/^ *//' >> tmp-stdint.h <<EOF
	269
	270	/* int8_t int16_t int32_t defined by inet code, we do the u_intXX types */
	271	#ifndef _INT8_T
	272	#define _INT8_T
	273	#endif
	274	#ifndef _INT16_T
	275	#define _INT16_T
	276	#endif
	277	#ifndef _INT32_T
	278	#define _INT32_T
	279	#endif
	280
	281	#ifndef _UINT8_T
	282	#define _UINT8_T
9e785243 PB	283	#ifndef __uint8_t_defined
9e785243 PB	284	#define __uint8_t_defined
8eb2f3f0 PB	285	typedef u_int8_t uint8_t;
8eb2f3f0 PB	286	#endif
9e785243	287	#endif
8eb2f3f0 PB	288
	289	#ifndef _UINT16_T
	290	#define _UINT16_T
9e785243 PB	291	#ifndef __uint16_t_defined
9e785243 PB	292	#define __uint16_t_defined
8eb2f3f0 PB	293	typedef u_int16_t uint16_t;
8eb2f3f0 PB	294	#endif
9e785243	295	#endif
8eb2f3f0 PB	296
	297	#ifndef _UINT32_T
	298	#define _UINT32_T
9e785243 PB	299	#ifndef __uint32_t_defined
9e785243 PB	300	#define __uint32_t_defined
8eb2f3f0 PB	301	typedef u_int32_t uint32_t;
8eb2f3f0 PB	302	#endif
9e785243	303	#endif
8eb2f3f0 PB	304	EOF
	305	else
	306	sed 's/^ *//' >> tmp-stdint.h <<EOF
	307
	308	/* Some systems have guard macros to prevent redefinitions, define them. */
	309	#ifndef _INT8_T
	310	#define _INT8_T
	311	#endif
	312	#ifndef _INT16_T
	313	#define _INT16_T
	314	#endif
	315	#ifndef _INT32_T
	316	#define _INT32_T
	317	#endif
	318	#ifndef _UINT8_T
	319	#define _UINT8_T
	320	#endif
	321	#ifndef _UINT16_T
	322	#define _UINT16_T
	323	#endif
	324	#ifndef _UINT32_T
	325	#define _UINT32_T
	326	#endif
	327	EOF
	328	fi
	329
	330	# ------------- done basic int types, emit int64_t types ------------
	331	if test "$ac_cv_type_uint64_t" = yes; then
	332	sed 's/^ *//' >> tmp-stdint.h <<EOF
	333
	334	/* system headers have good uint64_t and int64_t */
	335	#ifndef _INT64_T
	336	#define _INT64_T
	337	#endif
	338	#ifndef _UINT64_T
	339	#define _UINT64_T
	340	#endif
	341	EOF
	342	elif test "$ac_cv_type_u_int64_t" = yes; then
	343	sed 's/^ *//' >> tmp-stdint.h <<EOF
	344
	345	/* system headers have an u_int64_t (and int64_t) */
	346	#ifndef _INT64_T
	347	#define _INT64_T
	348	#endif
	349	#ifndef _UINT64_T
	350	#define _UINT64_T
9e785243 PB	351	#ifndef __uint64_t_defined
9e785243 PB	352	#define __uint64_t_defined
8eb2f3f0 PB	353	typedef u_int64_t uint64_t;
8eb2f3f0 PB	354	#endif
9e785243	355	#endif
8eb2f3f0 PB	356	EOF
	357	elif test -n "$acx_cv_type_int64_t"; then
	358	sed 's/^ *//' >> tmp-stdint.h <<EOF
	359
	360	/* architecture has a 64-bit type, $acx_cv_type_int64_t */
	361	#ifndef _INT64_T
	362	#define _INT64_T
	363	typedef $acx_cv_type_int64_t int64_t;
	364	#endif
	365	#ifndef _UINT64_T
	366	#define _UINT64_T
9e785243 PB	367	#ifndef __uint64_t_defined
9e785243 PB	368	#define __uint64_t_defined
8eb2f3f0 PB	369	typedef unsigned $acx_cv_type_int64_t uint64_t;
8eb2f3f0 PB	370	#endif
9e785243	371	#endif
8eb2f3f0 PB	372	EOF
	373	else
	374	sed 's/^ *//' >> tmp-stdint.h <<EOF
	375
	376	/* some common heuristics for int64_t, using compiler-specific tests */
	377	#if defined __STDC_VERSION__ && (__STDC_VERSION__-0) >= 199901L
	378	#ifndef _INT64_T
	379	#define _INT64_T
9e785243	380	#ifndef __int64_t_defined
8eb2f3f0 PB	381	typedef long long int64_t;
8eb2f3f0 PB	382	#endif
9e785243	383	#endif
8eb2f3f0 PB	384	#ifndef _UINT64_T
	385	#define _UINT64_T
	386	typedef unsigned long long uint64_t;
	387	#endif
	388
	389	#elif defined __GNUC__ && defined (__STDC__) && __STDC__-0
	390	/* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and
	391	does not implement __extension__. But that compiler doesn't define
	392	__GNUC_MINOR__. */
	393	# if __GNUC__ < 2 \|\| (__NeXT__ && !__GNUC_MINOR__)
	394	# define __extension__
	395	# endif
	396
	397	# ifndef _INT64_T
	398	# define _INT64_T
	399	__extension__ typedef long long int64_t;
	400	# endif
	401	# ifndef _UINT64_T
	402	# define _UINT64_T
	403	__extension__ typedef unsigned long long uint64_t;
	404	# endif
	405
	406	#elif !defined __STRICT_ANSI__
	407	# if defined _MSC_VER \|\| defined __WATCOMC__ \|\| defined __BORLANDC__
	408
	409	# ifndef _INT64_T
	410	# define _INT64_T
	411	typedef __int64 int64_t;
	412	# endif
	413	# ifndef _UINT64_T
	414	# define _UINT64_T
	415	typedef unsigned __int64 uint64_t;
	416	# endif
	417	# endif /* compiler */
	418
	419	#endif /* ANSI version */
	420	EOF
	421	fi
	422
	423	# ------------- done int64_t types, emit intptr types ------------
	424	if test "$ac_cv_type_uintptr_t" != yes; then
	425	sed 's/^ *//' >> tmp-stdint.h <<EOF
	426
	427	/* Define intptr_t based on sizeof(void) = $ac_cv_sizeof_void_p /
9e785243	428	#ifndef __uintptr_t_defined
8eb2f3f0	429	typedef u$acx_cv_type_intptr_t uintptr_t;
9e785243 PB	430	#endif
9e785243 PB	431	#ifndef __intptr_t_defined
8eb2f3f0	432	typedef $acx_cv_type_intptr_t intptr_t;
9e785243	433	#endif
8eb2f3f0 PB	434	EOF
	435	fi
	436
	437	# ------------- done intptr types, emit int_least types ------------
	438	if test "$ac_cv_type_int_least32_t" != yes; then
	439	sed 's/^ *//' >> tmp-stdint.h <<EOF
	440
	441	/* Define int_least types */
	442	typedef int8_t int_least8_t;
	443	typedef int16_t int_least16_t;
	444	typedef int32_t int_least32_t;
	445	#ifdef _INT64_T
	446	typedef int64_t int_least64_t;
	447	#endif
	448
	449	typedef uint8_t uint_least8_t;
	450	typedef uint16_t uint_least16_t;
	451	typedef uint32_t uint_least32_t;
	452	#ifdef _UINT64_T
	453	typedef uint64_t uint_least64_t;
	454	#endif
	455	EOF
	456	fi
	457
	458	# ------------- done intptr types, emit int_fast types ------------
	459	if test "$ac_cv_type_int_fast32_t" != yes; then
	460	dnl NOTE: The following code assumes that sizeof (int) > 1.
	461	dnl Fix when strange machines are reported.
	462	sed 's/^ *//' >> tmp-stdint.h <<EOF
	463
	464	/* Define int_fast types. short is often slow */
	465	typedef int8_t int_fast8_t;
	466	typedef int int_fast16_t;
	467	typedef int32_t int_fast32_t;
	468	#ifdef _INT64_T
	469	typedef int64_t int_fast64_t;
	470	#endif
	471
	472	typedef uint8_t uint_fast8_t;
	473	typedef unsigned int uint_fast16_t;
	474	typedef uint32_t uint_fast32_t;
	475	#ifdef _UINT64_T
	476	typedef uint64_t uint_fast64_t;
	477	#endif
	478	EOF
	479	fi
	480
	481	if test "$ac_cv_type_uintmax_t" != yes; then
	482	sed 's/^ *//' >> tmp-stdint.h <<EOF
	483
	484	/* Define intmax based on what we found */
	485	#ifdef _INT64_T
	486	typedef int64_t intmax_t;
	487	#else
	488	typedef long intmax_t;
	489	#endif
	490	#ifdef _UINT64_T
	491	typedef uint64_t uintmax_t;
	492	#else
	493	typedef unsigned long uintmax_t;
	494	#endif
	495	EOF
	496	fi
	497
498	sed 's/^ *//' >> tmp-stdint.h <<EOF
499
500	#endif /* GCC_GENERATED_STDINT_H */
501	EOF
502
503	if test -r ]_GCC_STDINT_H[ && cmp -s tmp-stdint.h ]_GCC_STDINT_H[; then
504	rm -f tmp-stdint.h
505	else
506	mv -f tmp-stdint.h ]_GCC_STDINT_H[
507	fi
508
509	], [
510	GCC="$GCC"
511	CC="$CC"
512	acx_cv_header_stdint="$acx_cv_header_stdint"
513	acx_cv_type_int8_t="$acx_cv_type_int8_t"
514	acx_cv_type_int16_t="$acx_cv_type_int16_t"
515	acx_cv_type_int32_t="$acx_cv_type_int32_t"
516	acx_cv_type_int64_t="$acx_cv_type_int64_t"
517	acx_cv_type_intptr_t="$acx_cv_type_intptr_t"
518	ac_cv_type_uintmax_t="$ac_cv_type_uintmax_t"
519	ac_cv_type_uintptr_t="$ac_cv_type_uintptr_t"
520	ac_cv_type_uint64_t="$ac_cv_type_uint64_t"
521	ac_cv_type_u_int64_t="$ac_cv_type_u_int64_t"
522	ac_cv_type_u_int32_t="$ac_cv_type_u_int32_t"
523	ac_cv_type_int_least32_t="$ac_cv_type_int_least32_t"
524	ac_cv_type_int_fast32_t="$ac_cv_type_int_fast32_t"
525	ac_cv_sizeof_void_p="$ac_cv_sizeof_void_p"
526	])
527
528	])