587 lines
16 KiB
Plaintext
587 lines
16 KiB
Plaintext
AC_DEFUN([GCC_STDINT_TYPES],
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[AC_REQUIRE([AC_TYPE_INT8_T])
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AC_REQUIRE([AC_TYPE_INT16_T])
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AC_REQUIRE([AC_TYPE_INT32_T])
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AC_REQUIRE([AC_TYPE_INT64_T])
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AC_REQUIRE([AC_TYPE_INTMAX_T])
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AC_REQUIRE([AC_TYPE_INTPTR_T])
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AC_REQUIRE([AC_TYPE_UINT8_T])
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AC_REQUIRE([AC_TYPE_UINT16_T])
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AC_REQUIRE([AC_TYPE_UINT32_T])
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AC_REQUIRE([AC_TYPE_UINT64_T])
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AC_REQUIRE([AC_TYPE_UINTMAX_T])
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AC_REQUIRE([AC_TYPE_UINTPTR_T])])
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dnl @synopsis GCC_HEADER_STDINT [( HEADER-TO-GENERATE [, HEADERS-TO-CHECK])]
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dnl
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dnl the "ISO C9X: 7.18 Integer types <stdint.h>" section requires the
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dnl existence of an include file <stdint.h> that defines a set of
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dnl typedefs, especially uint8_t,int32_t,uintptr_t.
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dnl Many older installations will not provide this file, but some will
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dnl have the very same definitions in <inttypes.h>. In other environments
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dnl we can use the inet-types in <sys/types.h> which would define the
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dnl typedefs int8_t and u_int8_t respectivly.
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dnl
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dnl This macros will create a local "_stdint.h" or the headerfile given as
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dnl an argument. In many cases that file will pick the definition from a
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dnl "#include <stdint.h>" or "#include <inttypes.h>" statement, while
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dnl in other environments it will provide the set of basic 'stdint's defined:
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dnl int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,intptr_t,uintptr_t
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dnl int_least32_t.. int_fast32_t.. intmax_t
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dnl which may or may not rely on the definitions of other files.
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dnl
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dnl Sometimes the stdint.h or inttypes.h headers conflict with sys/types.h,
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dnl so we test the headers together with sys/types.h and always include it
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dnl into the generated header (to match the tests with the generated file).
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dnl Hopefully this is not a big annoyance.
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dnl
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dnl If your installed header files require the stdint-types you will want to
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dnl create an installable file mylib-int.h that all your other installable
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dnl header may include. So, for a library package named "mylib", just use
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dnl GCC_HEADER_STDINT(mylib-int.h)
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dnl in configure.ac and install that header file in Makefile.am along with
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dnl the other headers (mylib.h). The mylib-specific headers can simply
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dnl use "#include <mylib-int.h>" to obtain the stdint-types.
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dnl
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dnl Remember, if the system already had a valid <stdint.h>, the generated
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dnl file will include it directly. No need for fuzzy HAVE_STDINT_H things...
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dnl
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dnl @author Guido Draheim <guidod@gmx.de>, Paolo Bonzini <bonzini@gnu.org>
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AC_DEFUN([GCC_HEADER_STDINT],
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[m4_define(_GCC_STDINT_H, m4_ifval($1, $1, _stdint.h))
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inttype_headers=`echo inttypes.h sys/inttypes.h $2 | sed -e 's/,/ /g'`
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acx_cv_header_stdint=stddef.h
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acx_cv_header_stdint_kind="(already complete)"
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for i in stdint.h $inttype_headers; do
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unset ac_cv_type_uintptr_t
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unset ac_cv_type_uintmax_t
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unset ac_cv_type_int_least32_t
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unset ac_cv_type_int_fast32_t
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unset ac_cv_type_uint64_t
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_AS_ECHO_N([looking for a compliant stdint.h in $i, ])
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AC_CHECK_TYPE(uintmax_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
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#include <$i>])
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AC_CHECK_TYPE(uintptr_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
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#include <$i>])
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AC_CHECK_TYPE(int_least32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
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#include <$i>])
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AC_CHECK_TYPE(int_fast32_t,,[acx_cv_header_stdint_kind="(mostly complete)"], [#include <sys/types.h>
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#include <$i>])
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AC_CHECK_TYPE(uint64_t,,[acx_cv_header_stdint_kind="(lacks uint64_t)"], [#include <sys/types.h>
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#include <$i>])
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break
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done
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if test "$acx_cv_header_stdint" = stddef.h; then
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acx_cv_header_stdint_kind="(lacks uintmax_t)"
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for i in stdint.h $inttype_headers; do
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unset ac_cv_type_uintptr_t
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unset ac_cv_type_uint32_t
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unset ac_cv_type_uint64_t
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_AS_ECHO_N([looking for an incomplete stdint.h in $i, ])
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AC_CHECK_TYPE(uint32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
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#include <$i>])
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AC_CHECK_TYPE(uint64_t,,,[#include <sys/types.h>
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#include <$i>])
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AC_CHECK_TYPE(uintptr_t,,,[#include <sys/types.h>
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#include <$i>])
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break
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done
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fi
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if test "$acx_cv_header_stdint" = stddef.h; then
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acx_cv_header_stdint_kind="(u_intXX_t style)"
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for i in sys/types.h $inttype_headers; do
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unset ac_cv_type_u_int32_t
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unset ac_cv_type_u_int64_t
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_AS_ECHO_N([looking for u_intXX_t types in $i, ])
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AC_CHECK_TYPE(u_int32_t,[acx_cv_header_stdint=$i],continue,[#include <sys/types.h>
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#include <$i>])
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AC_CHECK_TYPE(u_int64_t,,,[#include <sys/types.h>
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#include <$i>])
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break
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done
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fi
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if test "$acx_cv_header_stdint" = stddef.h; then
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acx_cv_header_stdint_kind="(using manual detection)"
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fi
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test -z "$ac_cv_type_uintptr_t" && ac_cv_type_uintptr_t=no
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test -z "$ac_cv_type_uint64_t" && ac_cv_type_uint64_t=no
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test -z "$ac_cv_type_u_int64_t" && ac_cv_type_u_int64_t=no
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test -z "$ac_cv_type_int_least32_t" && ac_cv_type_int_least32_t=no
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test -z "$ac_cv_type_int_fast32_t" && ac_cv_type_int_fast32_t=no
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# ----------------- Summarize what we found so far
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AC_MSG_CHECKING([what to include in _GCC_STDINT_H])
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case `AS_BASENAME(_GCC_STDINT_H)` in
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stdint.h) AC_MSG_WARN([are you sure you want it there?]) ;;
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inttypes.h) AC_MSG_WARN([are you sure you want it there?]) ;;
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*) ;;
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esac
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AC_MSG_RESULT($acx_cv_header_stdint $acx_cv_header_stdint_kind)
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# ----------------- done included file, check C basic types --------
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# Lacking an uintptr_t? Test size of void *
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case "$acx_cv_header_stdint:$ac_cv_type_uintptr_t" in
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stddef.h:* | *:no) AC_CHECK_SIZEOF(void *) ;;
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esac
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# Lacking an uint64_t? Test size of long
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case "$acx_cv_header_stdint:$ac_cv_type_uint64_t:$ac_cv_type_u_int64_t" in
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stddef.h:*:* | *:no:no) AC_CHECK_SIZEOF(long) ;;
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esac
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if test $acx_cv_header_stdint = stddef.h; then
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# Lacking a good header? Test size of everything and deduce all types.
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AC_CHECK_SIZEOF(int)
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AC_CHECK_SIZEOF(short)
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AC_CHECK_SIZEOF(char)
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AC_MSG_CHECKING(for type equivalent to int8_t)
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case "$ac_cv_sizeof_char" in
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1) acx_cv_type_int8_t=char ;;
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*) AC_MSG_ERROR([no 8-bit type, please report a bug])
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esac
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AC_MSG_RESULT($acx_cv_type_int8_t)
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AC_MSG_CHECKING(for type equivalent to int16_t)
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case "$ac_cv_sizeof_int:$ac_cv_sizeof_short" in
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2:*) acx_cv_type_int16_t=int ;;
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*:2) acx_cv_type_int16_t=short ;;
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*) AC_MSG_ERROR([no 16-bit type, please report a bug])
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esac
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AC_MSG_RESULT($acx_cv_type_int16_t)
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AC_MSG_CHECKING(for type equivalent to int32_t)
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case "$ac_cv_sizeof_int:$ac_cv_sizeof_long" in
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4:*) acx_cv_type_int32_t=int ;;
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*:4) acx_cv_type_int32_t=long ;;
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*) AC_MSG_ERROR([no 32-bit type, please report a bug])
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esac
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AC_MSG_RESULT($acx_cv_type_int32_t)
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fi
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# These tests are here to make the output prettier
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if test "$ac_cv_type_uint64_t" != yes && test "$ac_cv_type_u_int64_t" != yes; then
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case "$ac_cv_sizeof_long" in
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8) acx_cv_type_int64_t=long ;;
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esac
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AC_MSG_CHECKING(for type equivalent to int64_t)
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AC_MSG_RESULT(${acx_cv_type_int64_t-'using preprocessor symbols'})
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fi
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# Now we can use the above types
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if test "$ac_cv_type_uintptr_t" != yes; then
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AC_MSG_CHECKING(for type equivalent to intptr_t)
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case $ac_cv_sizeof_void_p in
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2) acx_cv_type_intptr_t=int16_t ;;
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4) acx_cv_type_intptr_t=int32_t ;;
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8) acx_cv_type_intptr_t=int64_t ;;
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*) AC_MSG_ERROR([no equivalent for intptr_t, please report a bug])
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esac
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AC_MSG_RESULT($acx_cv_type_intptr_t)
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fi
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# ----------------- done all checks, emit header -------------
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AC_CONFIG_COMMANDS(_GCC_STDINT_H, [
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if test "$GCC" = yes; then
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echo "/* generated for " `$CC --version | sed 1q` "*/" > tmp-stdint.h
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else
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echo "/* generated for $CC */" > tmp-stdint.h
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fi
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sed 's/^ *//' >> tmp-stdint.h <<EOF
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#ifndef GCC_GENERATED_STDINT_H
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#define GCC_GENERATED_STDINT_H 1
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#include <sys/types.h>
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EOF
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if test "$acx_cv_header_stdint" != stdint.h; then
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echo "#include <stddef.h>" >> tmp-stdint.h
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fi
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if test "$acx_cv_header_stdint" != stddef.h; then
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echo "#include <$acx_cv_header_stdint>" >> tmp-stdint.h
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fi
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sed 's/^ *//' >> tmp-stdint.h <<EOF
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/* glibc uses these symbols as guards to prevent redefinitions. */
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#ifdef __int8_t_defined
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#define _INT8_T
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#define _INT16_T
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#define _INT32_T
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#endif
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#ifdef __uint32_t_defined
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#define _UINT32_T
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#endif
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EOF
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# ----------------- done header, emit basic int types -------------
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if test "$acx_cv_header_stdint" = stddef.h; then
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sed 's/^ *//' >> tmp-stdint.h <<EOF
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#ifndef _UINT8_T
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#define _UINT8_T
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#ifndef __uint8_t_defined
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#define __uint8_t_defined
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#ifndef uint8_t
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typedef unsigned $acx_cv_type_int8_t uint8_t;
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#endif
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#endif
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#endif
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#ifndef _UINT16_T
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#define _UINT16_T
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#ifndef __uint16_t_defined
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#define __uint16_t_defined
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#ifndef uint16_t
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typedef unsigned $acx_cv_type_int16_t uint16_t;
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#endif
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#endif
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#endif
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#ifndef _UINT32_T
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#define _UINT32_T
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#ifndef __uint32_t_defined
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#define __uint32_t_defined
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#ifndef uint32_t
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typedef unsigned $acx_cv_type_int32_t uint32_t;
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#endif
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#endif
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#endif
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#ifndef _INT8_T
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#define _INT8_T
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#ifndef __int8_t_defined
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#define __int8_t_defined
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#ifndef int8_t
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typedef $acx_cv_type_int8_t int8_t;
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#endif
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#endif
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#endif
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#ifndef _INT16_T
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#define _INT16_T
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#ifndef __int16_t_defined
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#define __int16_t_defined
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#ifndef int16_t
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typedef $acx_cv_type_int16_t int16_t;
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#endif
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#endif
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#endif
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#ifndef _INT32_T
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#define _INT32_T
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#ifndef __int32_t_defined
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#define __int32_t_defined
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#ifndef int32_t
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typedef $acx_cv_type_int32_t int32_t;
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#endif
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#endif
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#endif
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EOF
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elif test "$ac_cv_type_u_int32_t" = yes; then
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sed 's/^ *//' >> tmp-stdint.h <<EOF
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/* int8_t int16_t int32_t defined by inet code, we do the u_intXX types */
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#ifndef _INT8_T
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#define _INT8_T
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#endif
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#ifndef _INT16_T
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#define _INT16_T
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#endif
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#ifndef _INT32_T
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#define _INT32_T
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#endif
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#ifndef _UINT8_T
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#define _UINT8_T
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#ifndef __uint8_t_defined
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#define __uint8_t_defined
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#ifndef uint8_t
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typedef u_int8_t uint8_t;
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#endif
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#endif
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#endif
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#ifndef _UINT16_T
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#define _UINT16_T
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#ifndef __uint16_t_defined
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#define __uint16_t_defined
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#ifndef uint16_t
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typedef u_int16_t uint16_t;
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#endif
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#endif
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#endif
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#ifndef _UINT32_T
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#define _UINT32_T
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#ifndef __uint32_t_defined
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#define __uint32_t_defined
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#ifndef uint32_t
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typedef u_int32_t uint32_t;
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#endif
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#endif
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#endif
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EOF
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else
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sed 's/^ *//' >> tmp-stdint.h <<EOF
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/* Some systems have guard macros to prevent redefinitions, define them. */
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#ifndef _INT8_T
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#define _INT8_T
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#endif
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#ifndef _INT16_T
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#define _INT16_T
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#endif
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#ifndef _INT32_T
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#define _INT32_T
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#endif
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#ifndef _UINT8_T
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#define _UINT8_T
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#endif
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#ifndef _UINT16_T
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#define _UINT16_T
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#endif
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#ifndef _UINT32_T
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#define _UINT32_T
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#endif
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EOF
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fi
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# ------------- done basic int types, emit int64_t types ------------
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if test "$ac_cv_type_uint64_t" = yes; then
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sed 's/^ *//' >> tmp-stdint.h <<EOF
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/* system headers have good uint64_t and int64_t */
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#ifndef _INT64_T
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#define _INT64_T
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#endif
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#ifndef _UINT64_T
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#define _UINT64_T
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#endif
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EOF
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elif test "$ac_cv_type_u_int64_t" = yes; then
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sed 's/^ *//' >> tmp-stdint.h <<EOF
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/* system headers have an u_int64_t (and int64_t) */
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#ifndef _INT64_T
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#define _INT64_T
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#endif
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#ifndef _UINT64_T
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#define _UINT64_T
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#ifndef __uint64_t_defined
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#define __uint64_t_defined
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#ifndef uint64_t
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typedef u_int64_t uint64_t;
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#endif
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#endif
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#endif
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EOF
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elif test -n "$acx_cv_type_int64_t"; then
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sed 's/^ *//' >> tmp-stdint.h <<EOF
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/* architecture has a 64-bit type, $acx_cv_type_int64_t */
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#ifndef _INT64_T
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#define _INT64_T
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#ifndef int64_t
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typedef $acx_cv_type_int64_t int64_t;
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#endif
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#endif
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#ifndef _UINT64_T
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#define _UINT64_T
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#ifndef __uint64_t_defined
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#define __uint64_t_defined
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#ifndef uint64_t
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typedef unsigned $acx_cv_type_int64_t uint64_t;
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#endif
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#endif
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#endif
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EOF
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else
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sed 's/^ *//' >> tmp-stdint.h <<EOF
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/* some common heuristics for int64_t, using compiler-specific tests */
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#if defined __STDC_VERSION__ && (__STDC_VERSION__-0) >= 199901L
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#ifndef _INT64_T
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#define _INT64_T
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#ifndef __int64_t_defined
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#ifndef int64_t
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typedef long long int64_t;
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#endif
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#endif
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#endif
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#ifndef _UINT64_T
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#define _UINT64_T
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#ifndef uint64_t
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typedef unsigned long long uint64_t;
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#endif
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#endif
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#elif defined __GNUC__ && defined (__STDC__) && __STDC__-0
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/* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and
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does not implement __extension__. But that compiler doesn't define
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__GNUC_MINOR__. */
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# if __GNUC__ < 2 || (__NeXT__ && !__GNUC_MINOR__)
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# define __extension__
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# endif
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# ifndef _INT64_T
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# define _INT64_T
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# ifndef int64_t
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__extension__ typedef long long int64_t;
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# endif
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# endif
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# ifndef _UINT64_T
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# define _UINT64_T
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# ifndef uint64_t
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__extension__ typedef unsigned long long uint64_t;
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# endif
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# endif
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#elif !defined __STRICT_ANSI__
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# if defined _MSC_VER || defined __WATCOMC__ || defined __BORLANDC__
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# ifndef _INT64_T
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# define _INT64_T
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# ifndef int64_t
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typedef __int64 int64_t;
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# endif
|
|
# endif
|
|
# ifndef _UINT64_T
|
|
# define _UINT64_T
|
|
# ifndef uint64_t
|
|
typedef unsigned __int64 uint64_t;
|
|
# endif
|
|
# 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*) = $ac_cv_sizeof_void_p */
|
|
#ifndef __uintptr_t_defined
|
|
#ifndef uintptr_t
|
|
typedef u$acx_cv_type_intptr_t uintptr_t;
|
|
#endif
|
|
#endif
|
|
#ifndef __intptr_t_defined
|
|
#ifndef intptr_t
|
|
typedef $acx_cv_type_intptr_t intptr_t;
|
|
#endif
|
|
#endif
|
|
EOF
|
|
fi
|
|
|
|
# ------------- done intptr types, emit int_least types ------------
|
|
if test "$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 */
|
|
#ifndef intmax_t
|
|
#ifdef _INT64_T
|
|
typedef int64_t intmax_t;
|
|
#else
|
|
typedef long intmax_t;
|
|
#endif
|
|
#endif
|
|
#ifndef uintmax_t
|
|
#ifdef _UINT64_T
|
|
typedef uint64_t uintmax_t;
|
|
#else
|
|
typedef unsigned long uintmax_t;
|
|
#endif
|
|
#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"
|
|
])
|
|
|
|
])
|