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98 lines
3.2 KiB
Plaintext
98 lines
3.2 KiB
Plaintext
15 years ago
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#These defines are needed because CentOS5 uses a old version of autoconf
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#
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AC_DEFUN([AC_TYPE_INT8_T], [_AC_TYPE_INT(8)])
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AC_DEFUN([AC_TYPE_INT16_T], [_AC_TYPE_INT(16)])
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AC_DEFUN([AC_TYPE_INT32_T], [_AC_TYPE_INT(32)])
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AC_DEFUN([AC_TYPE_INT64_T], [_AC_TYPE_INT(64)])
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AC_DEFUN([AC_TYPE_UINT8_T], [_AC_TYPE_UNSIGNED_INT(8)])
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AC_DEFUN([AC_TYPE_UINT16_T], [_AC_TYPE_UNSIGNED_INT(16)])
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AC_DEFUN([AC_TYPE_UINT32_T], [_AC_TYPE_UNSIGNED_INT(32)])
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AC_DEFUN([AC_TYPE_UINT64_T], [_AC_TYPE_UNSIGNED_INT(64)])
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# _AC_TYPE_INT(NBITS)
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# -------------------
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AC_DEFUN([_AC_TYPE_INT],
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[
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AC_CACHE_CHECK([for int$1_t], [ac_cv_c_int$1_t],
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[ac_cv_c_int$1_t=no
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for ac_type in 'int$1_t' 'int' 'long int' \
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'long long int' 'short int' 'signed char'; do
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AC_COMPILE_IFELSE(
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[AC_LANG_BOOL_COMPILE_TRY(
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[AC_INCLUDES_DEFAULT],
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[[0 < ($ac_type) (((($ac_type) 1 << ($1 - 2)) - 1) * 2 + 1)]])],
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[AC_COMPILE_IFELSE(
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[AC_LANG_BOOL_COMPILE_TRY(
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[AC_INCLUDES_DEFAULT],
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[[($ac_type) (((($ac_type) 1 << ($1 - 2)) - 1) * 2 + 1)
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< ($ac_type) (((($ac_type) 1 << ($1 - 2)) - 1) * 2 + 2)]])],
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[],
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[AS_CASE([$ac_type], [int$1_t],
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[ac_cv_c_int$1_t=yes],
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[ac_cv_c_int$1_t=$ac_type])])])
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test "$ac_cv_c_int$1_t" != no && break
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done])
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case $ac_cv_c_int$1_t in #(
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no|yes) ;; #(
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*)
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AC_DEFINE_UNQUOTED([int$1_t], [$ac_cv_c_int$1_t],
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[Define to the type of a signed integer type of width exactly $1 bits
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if such a type exists and the standard includes do not define it.]);;
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esac
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])# _AC_TYPE_INT
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# _AC_TYPE_UNSIGNED_INT(NBITS)
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# ----------------------------
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AC_DEFUN([_AC_TYPE_UNSIGNED_INT],
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[
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AC_CACHE_CHECK([for uint$1_t], [ac_cv_c_uint$1_t],
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[ac_cv_c_uint$1_t=no
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for ac_type in 'uint$1_t' 'unsigned int' 'unsigned long int' \
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'unsigned long long int' 'unsigned short int' 'unsigned char'; do
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AC_COMPILE_IFELSE(
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[AC_LANG_BOOL_COMPILE_TRY(
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[AC_INCLUDES_DEFAULT],
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[[($ac_type) -1 >> ($1 - 1) == 1]])],
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[AS_CASE([$ac_type], [uint$1_t],
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[ac_cv_c_uint$1_t=yes],
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[ac_cv_c_uint$1_t=$ac_type])])
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test "$ac_cv_c_uint$1_t" != no && break
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done])
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case $ac_cv_c_uint$1_t in #(
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no|yes) ;; #(
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*)
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m4_bmatch([$1], [^\(8\|32\|64\)$],
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[AC_DEFINE([_UINT$1_T], 1,
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[Define for Solaris 2.5.1 so the uint$1_t typedef from
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<sys/synch.h>, <pthread.h>, or <semaphore.h> is not used.
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If the typedef was allowed, the #define below would cause a
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syntax error.])])
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AC_DEFINE_UNQUOTED([uint$1_t], [$ac_cv_c_uint$1_t],
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[Define to the type of an unsigned integer type of width exactly $1 bits
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if such a type exists and the standard includes do not define it.]);;
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esac
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])# _AC_TYPE_UNSIGNED_INT
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# AS_CASE(WORD, [PATTERN1], [IF-MATCHED1]...[DEFAULT])
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# ----------------------------------------------------
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# Expand into
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# | case WORD in
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# | PATTERN1) IF-MATCHED1 ;;
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# | ...
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# | *) DEFAULT ;;
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# | esac
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m4_define([_AS_CASE],
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[m4_if([$#], 0, [m4_fatal([$0: too few arguments: $#])],
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[$#], 1, [ *) $1 ;;],
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[$#], 2, [ $1) m4_default([$2], [:]) ;;],
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[ $1) m4_default([$2], [:]) ;;
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$0(m4_shiftn(2, $@))])dnl
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])
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m4_defun([AS_CASE],
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[m4_ifval([$2$3],
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[case $1 in
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_AS_CASE(m4_shift($@))
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esac
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])dnl
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])# AS_CASE
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