[deliverable/binutils-gdb.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 <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.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 uintptr_t)"
  for i in stdint.h $inttype_headers; do
    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 <$i>])
    AC_CHECK_TYPE(uint64_t,,[acx_cv_header_stdint_kind="(lacks uintptr_t and uint64_t)"], [#include <sys/types.h>
#include <$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 <$i>])
    AC_CHECK_TYPE(u_int64_t,,[acx_cv_header_stdint_kind="(u_intXX_t style, lacks u_int64_t)"], [#include <sys/types.h>
#include <$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
    typedef unsigned $acx_cv_type_int8_t uint8_t;
    #endif

    #ifndef _UINT16_T
    #define _UINT16_T
    typedef unsigned $acx_cv_type_int16_t uint16_t;
    #endif

    #ifndef _UINT32_T
    #define _UINT32_T
    typedef unsigned $acx_cv_type_int32_t uint32_t;
    #endif

    #ifndef _INT8_T
    #define _INT8_T
    typedef $acx_cv_type_int8_t int8_t;
    #endif

    #ifndef _INT16_T
    #define _INT16_T
    typedef $acx_cv_type_int16_t int16_t;
    #endif

    #ifndef _INT32_T
    #define _INT32_T
    typedef $acx_cv_type_int32_t int32_t;
    #endif
EOF
elif test "$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
    typedef u_int8_t uint8_t;
    #endif

    #ifndef _UINT16_T
    #define _UINT16_T
    typedef u_int16_t uint16_t;
    #endif

    #ifndef _UINT32_T
    #define _UINT32_T
    typedef u_int32_t uint32_t;
    #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
    typedef u_int64_t uint64_t;
    #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
    typedef unsigned $acx_cv_type_int64_t uint64_t;
    #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
    typedef long long int64_t;
    #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*) = $ac_cv_sizeof_void_p */
    typedef u$acx_cv_type_intptr_t uintptr_t;
    typedef $acx_cv_type_intptr_t  intptr_t;
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 <guidod@gmx.de>, Paolo Bonzini <bonzini@gnu.org>
	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
	64	acx_cv_header_stdint_kind="(lacks uintptr_t)"
65	for i in stdint.h $inttype_headers; do
66	unset ac_cv_type_uint32_t
67	unset ac_cv_type_uint64_t
68	_AS_ECHO_N([looking for an incomplete stdint.h in $i, ])
69	AC_CHECK_TYPE(uint32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
70	#include <$i>])
71	AC_CHECK_TYPE(uint64_t,,[acx_cv_header_stdint_kind="(lacks uintptr_t and uint64_t)"], [#include <sys/types.h>
72	#include <$i>])
73	break
74	done
75	fi
76	if test "$acx_cv_header_stdint" = stddef.h; then
77	acx_cv_header_stdint_kind="(u_intXX_t style)"
78	for i in sys/types.h $inttype_headers; do
79	unset ac_cv_type_u_int32_t
80	unset ac_cv_type_u_int64_t
81	_AS_ECHO_N([looking for u_intXX_t types in $i, ])
82	AC_CHECK_TYPE(u_int32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
83	#include <$i>])
84	AC_CHECK_TYPE(u_int64_t,,[acx_cv_header_stdint_kind="(u_intXX_t style, lacks u_int64_t)"], [#include <sys/types.h>
85	#include <$i>])
86	break
87	done
88	fi
89	if test "$acx_cv_header_stdint" = stddef.h; then
90	acx_cv_header_stdint_kind="(using manual detection)"
91	fi
92
93	test -z "$ac_cv_type_uintptr_t" && ac_cv_type_uintptr_t=no
94	test -z "$ac_cv_type_uint64_t" && ac_cv_type_uint64_t=no
95	test -z "$ac_cv_type_u_int64_t" && ac_cv_type_u_int64_t=no
96	test -z "$ac_cv_type_int_least32_t" && ac_cv_type_int_least32_t=no
97	test -z "$ac_cv_type_int_fast32_t" && ac_cv_type_int_fast32_t=no
98
99	# ----------------- Summarize what we found so far
100
101	AC_MSG_CHECKING([what to include in _GCC_STDINT_H])
102
103	case `AS_BASENAME(_GCC_STDINT_H)` in
104	stdint.h) AC_MSG_WARN([are you sure you want it there?]) ;;
105	inttypes.h) AC_MSG_WARN([are you sure you want it there?]) ;;
106	*) ;;
107	esac
108
109	AC_MSG_RESULT($acx_cv_header_stdint $acx_cv_header_stdint_kind)
110
111	# ----------------- done included file, check C basic types --------
112
113	# Lacking an uintptr_t? Test size of void *
114	case "$acx_cv_header_stdint:$ac_cv_type_uintptr_t" in
115	stddef.h:* \| :no) AC_CHECK_SIZEOF(void ) ;;
116	esac
117
118	# Lacking an uint64_t? Test size of long
119	case "$acx_cv_header_stdint:$ac_cv_type_uint64_t:$ac_cv_type_u_int64_t" in
120	stddef.h:: \| *:no:no) AC_CHECK_SIZEOF(long) ;;
121	esac
122
123	if test $acx_cv_header_stdint = stddef.h; then
124	# Lacking a good header? Test size of everything and deduce all types.
125	AC_CHECK_SIZEOF(int)
126	AC_CHECK_SIZEOF(short)
127	AC_CHECK_SIZEOF(char)
128
129	AC_MSG_CHECKING(for type equivalent to int8_t)
130	case "$ac_cv_sizeof_char" in
131	1) acx_cv_type_int8_t=char ;;
132	*) AC_MSG_ERROR(no 8-bit type, please report a bug)
133	esac
134	AC_MSG_RESULT($acx_cv_type_int8_t)
135
136	AC_MSG_CHECKING(for type equivalent to int16_t)
137	case "$ac_cv_sizeof_int:$ac_cv_sizeof_short" in
138	2:*) acx_cv_type_int16_t=int ;;
139	*:2) acx_cv_type_int16_t=short ;;
140	*) AC_MSG_ERROR(no 16-bit type, please report a bug)
141	esac
142	AC_MSG_RESULT($acx_cv_type_int16_t)
143
144	AC_MSG_CHECKING(for type equivalent to int32_t)
145	case "$ac_cv_sizeof_int:$ac_cv_sizeof_long" in
146	4:*) acx_cv_type_int32_t=int ;;
147	*:4) acx_cv_type_int32_t=long ;;
148	*) AC_MSG_ERROR(no 32-bit type, please report a bug)
149	esac
150	AC_MSG_RESULT($acx_cv_type_int32_t)
151	fi
152
153	# These tests are here to make the output prettier
154
155	if test "$ac_cv_type_uint64_t" != yes && test "$ac_cv_type_u_int64_t" != yes; then
156	case "$ac_cv_sizeof_long" in
157	8) acx_cv_type_int64_t=long ;;
158	esac
159	AC_MSG_CHECKING(for type equivalent to int64_t)
160	AC_MSG_RESULT(${acx_cv_type_int64_t-'using preprocessor symbols'})
161	fi
162
163	# Now we can use the above types
164
165	if test "$ac_cv_type_uintptr_t" != yes; then
166	AC_MSG_CHECKING(for type equivalent to intptr_t)
167	case $ac_cv_sizeof_void_p in
168	2) acx_cv_type_intptr_t=int16_t ;;
169	4) acx_cv_type_intptr_t=int32_t ;;
170	8) acx_cv_type_intptr_t=int64_t ;;
171	*) AC_MSG_ERROR(no equivalent for intptr_t, please report a bug)
172	esac
173	AC_MSG_RESULT($acx_cv_type_intptr_t)
174	fi
175
176	# ----------------- done all checks, emit header -------------
177	AC_CONFIG_COMMANDS(_GCC_STDINT_H, [
178	if test "$GCC" = yes; then
179	echo "/* generated for " `$CC --version \| sed 1q` "*/" > tmp-stdint.h
180	else
181	echo "/* generated for $CC */" > tmp-stdint.h
182	fi
183
184	sed 's/^ *//' >> tmp-stdint.h <<EOF
185
186	#ifndef GCC_GENERATED_STDINT_H
187	#define GCC_GENERATED_STDINT_H 1
188
189	#include <sys/types.h>
190	EOF
191
192	if test "$acx_cv_header_stdint" != stdint.h; then
193	echo "#include <stddef.h>" >> tmp-stdint.h
194	fi
195	if test "$acx_cv_header_stdint" != stddef.h; then
196	echo "#include <$acx_cv_header_stdint>" >> tmp-stdint.h
197	fi
198
199	sed 's/^ *//' >> tmp-stdint.h <<EOF
200	/* glibc uses these symbols as guards to prevent redefinitions. */
201	#ifdef __int8_t_defined
202	#define _INT8_T
203	#define _INT16_T
204	#define _INT32_T
205	#endif
206	#ifdef __uint32_t_defined
207	#define _UINT32_T
208	#endif
209
210	EOF
211
212	# ----------------- done header, emit basic int types -------------
213	if test "$acx_cv_header_stdint" = stddef.h; then
214	sed 's/^ *//' >> tmp-stdint.h <<EOF
215
216	#ifndef _UINT8_T
217	#define _UINT8_T
218	typedef unsigned $acx_cv_type_int8_t uint8_t;
219	#endif
220
221	#ifndef _UINT16_T
222	#define _UINT16_T
223	typedef unsigned $acx_cv_type_int16_t uint16_t;
224	#endif
225
226	#ifndef _UINT32_T
227	#define _UINT32_T
228	typedef unsigned $acx_cv_type_int32_t uint32_t;
229	#endif
230
231	#ifndef _INT8_T
232	#define _INT8_T
233	typedef $acx_cv_type_int8_t int8_t;
234	#endif
235
236	#ifndef _INT16_T
237	#define _INT16_T
238	typedef $acx_cv_type_int16_t int16_t;
239	#endif
240
241	#ifndef _INT32_T
242	#define _INT32_T
243	typedef $acx_cv_type_int32_t int32_t;
244	#endif
245	EOF
246	elif test "$ac_cv_type_u_int32_t" = yes; then
247	sed 's/^ *//' >> tmp-stdint.h <<EOF
248
249	/* int8_t int16_t int32_t defined by inet code, we do the u_intXX types */
250	#ifndef _INT8_T
251	#define _INT8_T
252	#endif
253	#ifndef _INT16_T
254	#define _INT16_T
255	#endif
256	#ifndef _INT32_T
257	#define _INT32_T
258	#endif
259
260	#ifndef _UINT8_T
261	#define _UINT8_T
262	typedef u_int8_t uint8_t;
263	#endif
264
265	#ifndef _UINT16_T
266	#define _UINT16_T
267	typedef u_int16_t uint16_t;
268	#endif
269
270	#ifndef _UINT32_T
271	#define _UINT32_T
272	typedef u_int32_t uint32_t;
273	#endif
274	EOF
275	else
276	sed 's/^ *//' >> tmp-stdint.h <<EOF
277
278	/* Some systems have guard macros to prevent redefinitions, define them. */
279	#ifndef _INT8_T
280	#define _INT8_T
281	#endif
282	#ifndef _INT16_T
283	#define _INT16_T
284	#endif
285	#ifndef _INT32_T
286	#define _INT32_T
287	#endif
288	#ifndef _UINT8_T
289	#define _UINT8_T
290	#endif
291	#ifndef _UINT16_T
292	#define _UINT16_T
293	#endif
294	#ifndef _UINT32_T
295	#define _UINT32_T
296	#endif
297	EOF
298	fi
299
300	# ------------- done basic int types, emit int64_t types ------------
301	if test "$ac_cv_type_uint64_t" = yes; then
302	sed 's/^ *//' >> tmp-stdint.h <<EOF
303
304	/* system headers have good uint64_t and int64_t */
305	#ifndef _INT64_T
306	#define _INT64_T
307	#endif
308	#ifndef _UINT64_T
309	#define _UINT64_T
310	#endif
311	EOF
312	elif test "$ac_cv_type_u_int64_t" = yes; then
313	sed 's/^ *//' >> tmp-stdint.h <<EOF
314
315	/* system headers have an u_int64_t (and int64_t) */
316	#ifndef _INT64_T
317	#define _INT64_T
318	#endif
319	#ifndef _UINT64_T
320	#define _UINT64_T
321	typedef u_int64_t uint64_t;
322	#endif
323	EOF
324	elif test -n "$acx_cv_type_int64_t"; then
325	sed 's/^ *//' >> tmp-stdint.h <<EOF
326
327	/* architecture has a 64-bit type, $acx_cv_type_int64_t */
328	#ifndef _INT64_T
329	#define _INT64_T
330	typedef $acx_cv_type_int64_t int64_t;
331	#endif
332	#ifndef _UINT64_T
333	#define _UINT64_T
334	typedef unsigned $acx_cv_type_int64_t uint64_t;
335	#endif
336	EOF
337	else
338	sed 's/^ *//' >> tmp-stdint.h <<EOF
339
340	/* some common heuristics for int64_t, using compiler-specific tests */
341	#if defined __STDC_VERSION__ && (__STDC_VERSION__-0) >= 199901L
342	#ifndef _INT64_T
343	#define _INT64_T
344	typedef long long int64_t;
345	#endif
346	#ifndef _UINT64_T
347	#define _UINT64_T
348	typedef unsigned long long uint64_t;
349	#endif
350
351	#elif defined __GNUC__ && defined (__STDC__) && __STDC__-0
352	/* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and
353	does not implement __extension__. But that compiler doesn't define
354	__GNUC_MINOR__. */
355	# if __GNUC__ < 2 \|\| (__NeXT__ && !__GNUC_MINOR__)
356	# define __extension__
357	# endif
358
359	# ifndef _INT64_T
360	# define _INT64_T
361	__extension__ typedef long long int64_t;
362	# endif
363	# ifndef _UINT64_T
364	# define _UINT64_T
365	__extension__ typedef unsigned long long uint64_t;
366	# endif
367
368	#elif !defined __STRICT_ANSI__
369	# if defined _MSC_VER \|\| defined __WATCOMC__ \|\| defined __BORLANDC__
370
371	# ifndef _INT64_T
372	# define _INT64_T
373	typedef __int64 int64_t;
374	# endif
375	# ifndef _UINT64_T
376	# define _UINT64_T
377	typedef unsigned __int64 uint64_t;
378	# endif
379	# endif /* compiler */
380
381	#endif /* ANSI version */
382	EOF
383	fi
384
385	# ------------- done int64_t types, emit intptr types ------------
386	if test "$ac_cv_type_uintptr_t" != yes; then
387	sed 's/^ *//' >> tmp-stdint.h <<EOF
388
389	/* Define intptr_t based on sizeof(void) = $ac_cv_sizeof_void_p /
390	typedef u$acx_cv_type_intptr_t uintptr_t;
391	typedef $acx_cv_type_intptr_t intptr_t;
392	EOF
393	fi
394
395	# ------------- done intptr types, emit int_least types ------------
396	if test "$ac_cv_type_int_least32_t" != yes; then
397	sed 's/^ *//' >> tmp-stdint.h <<EOF
398
399	/* Define int_least types */
400	typedef int8_t int_least8_t;
401	typedef int16_t int_least16_t;
402	typedef int32_t int_least32_t;
403	#ifdef _INT64_T
404	typedef int64_t int_least64_t;
405	#endif
406
407	typedef uint8_t uint_least8_t;
408	typedef uint16_t uint_least16_t;
409	typedef uint32_t uint_least32_t;
410	#ifdef _UINT64_T
411	typedef uint64_t uint_least64_t;
412	#endif
413	EOF
414	fi
415
416	# ------------- done intptr types, emit int_fast types ------------
417	if test "$ac_cv_type_int_fast32_t" != yes; then
418	dnl NOTE: The following code assumes that sizeof (int) > 1.
419	dnl Fix when strange machines are reported.
420	sed 's/^ *//' >> tmp-stdint.h <<EOF
421
422	/* Define int_fast types. short is often slow */
423	typedef int8_t int_fast8_t;
424	typedef int int_fast16_t;
425	typedef int32_t int_fast32_t;
426	#ifdef _INT64_T
427	typedef int64_t int_fast64_t;
428	#endif
429
430	typedef uint8_t uint_fast8_t;
431	typedef unsigned int uint_fast16_t;
432	typedef uint32_t uint_fast32_t;
433	#ifdef _UINT64_T
434	typedef uint64_t uint_fast64_t;
435	#endif
436	EOF
437	fi
438
439	if test "$ac_cv_type_uintmax_t" != yes; then
440	sed 's/^ *//' >> tmp-stdint.h <<EOF
441
442	/* Define intmax based on what we found */
443	#ifdef _INT64_T
444	typedef int64_t intmax_t;
445	#else
446	typedef long intmax_t;
447	#endif
448	#ifdef _UINT64_T
449	typedef uint64_t uintmax_t;
450	#else
451	typedef unsigned long uintmax_t;
452	#endif
453	EOF
454	fi
455
456	sed 's/^ *//' >> tmp-stdint.h <<EOF
457
458	#endif /* GCC_GENERATED_STDINT_H */
459	EOF
460
461	if test -r ]_GCC_STDINT_H[ && cmp -s tmp-stdint.h ]_GCC_STDINT_H[; then
462	rm -f tmp-stdint.h
463	else
464	mv -f tmp-stdint.h ]_GCC_STDINT_H[
465	fi
466
467	], [
468	GCC="$GCC"
469	CC="$CC"
470	acx_cv_header_stdint="$acx_cv_header_stdint"
471	acx_cv_type_int8_t="$acx_cv_type_int8_t"
472	acx_cv_type_int16_t="$acx_cv_type_int16_t"
473	acx_cv_type_int32_t="$acx_cv_type_int32_t"
474	acx_cv_type_int64_t="$acx_cv_type_int64_t"
475	acx_cv_type_intptr_t="$acx_cv_type_intptr_t"
476	ac_cv_type_uintmax_t="$ac_cv_type_uintmax_t"
477	ac_cv_type_uintptr_t="$ac_cv_type_uintptr_t"
478	ac_cv_type_uint64_t="$ac_cv_type_uint64_t"
479	ac_cv_type_u_int64_t="$ac_cv_type_u_int64_t"
480	ac_cv_type_u_int32_t="$ac_cv_type_u_int32_t"
481	ac_cv_type_int_least32_t="$ac_cv_type_int_least32_t"
482	ac_cv_type_int_fast32_t="$ac_cv_type_int_fast32_t"
483	ac_cv_sizeof_void_p="$ac_cv_sizeof_void_p"
484	])
485
486	])