57 lines
1.6 KiB
Plaintext
57 lines
1.6 KiB
Plaintext
#serial 6
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dnl From Paul Eggert.
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AC_PREREQ(2.13)
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# Define HAVE_INTTYPES_H if <inttypes.h> exists,
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# doesn't clash with <sys/types.h>, and declares intmax_t and uintmax_t.
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AC_DEFUN([jm_AC_HEADER_INTTYPES_H],
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[
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AC_CACHE_CHECK([for inttypes.h], jm_ac_cv_header_inttypes_h,
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[AC_TRY_COMPILE(
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[#include <sys/types.h>
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#include <inttypes.h>],
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[intmax_t i = (intmax_t) -1; uintmax_t ui = (uintmax_t) -1;],
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jm_ac_cv_header_inttypes_h=yes,
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jm_ac_cv_header_inttypes_h=no)])
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if test $jm_ac_cv_header_inttypes_h = yes; then
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AC_DEFINE_UNQUOTED(HAVE_INTTYPES_H, 1,
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[Define if <inttypes.h> exists, doesn't clash with <sys/types.h>,
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and declares intmax_t and uintmax_t.])
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fi
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])
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# Define intmax_t to long or long long if <inttypes.h> doesn't define.
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AC_DEFUN([jm_AC_TYPE_INTMAX_T],
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[
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AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
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if test $jm_ac_cv_header_inttypes_h = no; then
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AC_REQUIRE([jm_AC_TYPE_LONG_LONG])
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test $ac_cv_type_long_long = yes \
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&& ac_type='long long' \
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|| ac_type='long'
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AC_DEFINE_UNQUOTED(intmax_t, $ac_type,
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[Define to long or long long if <inttypes.h> doesn't define.])
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fi
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])
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# Define uintmax_t to unsigned long or unsigned long long
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# if <inttypes.h> doesn't define.
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AC_DEFUN([jm_AC_TYPE_UINTMAX_T],
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[
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AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
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if test $jm_ac_cv_header_inttypes_h = no; then
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AC_REQUIRE([jm_AC_TYPE_UNSIGNED_LONG_LONG])
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test $ac_cv_type_unsigned_long_long = yes \
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&& ac_type='unsigned long long' \
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|| ac_type='unsigned long'
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AC_DEFINE_UNQUOTED(uintmax_t, $ac_type,
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[Define to unsigned long or unsigned long long
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if <inttypes.h> doesn't define.])
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fi
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])
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