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use a shell function for AC_TYPE_INTx_T
* lib/autoconf/types.m4 (_AC_TYPE_INT_BODY, _AC_TYPE_UNSIGNED_INT_BODY): New. (_AC_TYPE_INT, _AC_TYPE_UNSIGNED_INT): Define and use a shell function.
This commit is contained in:
Paolo Bonzini
parent
09012d045b
commit
29e6e30d37
@ -1,3 +1,10 @@
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2008-10-28 Paolo Bonzini <bonzini@gnu.org>
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use a shell function for AC_TYPE_INTx_T
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* lib/autoconf/types.m4 (_AC_TYPE_INT_BODY, _AC_TYPE_UNSIGNED_INT_BODY):
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New.
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(_AC_TYPE_INT, _AC_TYPE_UNSIGNED_INT): Define and use a shell function.
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2008-10-28 Paolo Bonzini <bonzini@gnu.org>
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* lib/autoconf/general.m4 (AC_CHECK_DECL): Fix AS_ESCAPE usage.
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@ -642,56 +642,93 @@ 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$1_t' 'int' 'long int' \
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# _AC_TYPE_INT_BODY
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# -----------------
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# Shell function body for _AC_TYPE_INT.
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m4_define([_AC_TYPE_INT_BODY],
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[ AS_LINENO_PUSH([$[]1])
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AC_CACHE_CHECK([for int$[]2${ac_nonexistent_var}_t], [$[]3],
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[AS_VAR_SET([$[]3], [no])
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for ac_type in int$[]2""_t 'int' 'long int' \
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'long long int' 'short int' 'signed char'; do
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AC_COMPILE_IFELSE(
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[AC_LANG_BOOL_COMPILE_TRY(
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[AC_INCLUDES_DEFAULT],
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[[0 < ($ac_type) (((($ac_type) 1 << ($1 - 2)) - 1) * 2 + 1)]])],
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[0 < ($ac_type) (((($ac_type) 1 << ($[]2 - 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 << ($1 - 2)) - 1) * 2 + 2)]])],
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[($ac_type) (((($ac_type) 1 << ($[]2 - 2)) - 1) * 2 + 1)
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< ($ac_type) (((($ac_type) 1 << ($[]2 - 2)) - 1) * 2 + 2)])],
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[],
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[AS_CASE([$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$1_t" != no && break
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[AS_CASE([$ac_type], [int$[]2""_t],
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[AS_VAR_SET([$[]3], [yes])],
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[AS_VAR_SET([$[]3], [$ac_type])])])])
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AS_VAR_IF([$[]3], [no], [], [break])
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done])
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case $ac_cv_c_int$1_t in #(
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AS_LINENO_POP
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])# _AC_TYPE_INT_BODY
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# _AC_TYPE_INT(NBITS)
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# -------------------
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# Set a variable ac_cv_c_intNBITS_t to `yes' if intNBITS_t is available,
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# `no' if it is not and no replacement types could be found, and a C type
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# if it is not available but a replacement signed integer type of width
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# exactly NBITS bits was found. In the third case, intNBITS_t is AC_DEFINEd
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# to type, as well.
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AC_DEFUN([_AC_TYPE_INT],
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[AC_REQUIRE_SHELL_FN([ac_func_c_find_intX_t],
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[AS_FUNCTION_DESCRIBE([ac_func_c_find_intX_t], [LINENO BITS VAR],
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[Finds a signed integer type with width BITS, setting cache variable VAR
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accordingly.])],
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[$0_BODY])]dnl
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[ac_func_c_find_intX_t "$LINENO" "$1" "ac_cv_c_int$1_t"
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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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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$1_t' 'unsigned int' 'unsigned long int' \
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# _AC_TYPE_UNSIGNED_INT_BODY
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# --------------------------
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# Shell function body for _AC_TYPE_UNSIGNED_INT.
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m4_define([_AC_TYPE_UNSIGNED_INT_BODY],
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[ AS_LINENO_PUSH([$[]1])
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AC_CACHE_CHECK([for uint$[]2${ac_nonexistent_var}_t], $[]3,
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[AS_VAR_SET([$[]3], [no])
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for ac_type in uint$[]2""_t 'unsigned int' 'unsigned long int' \
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'unsigned long long int' 'unsigned short int' 'unsigned char'; do
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AC_COMPILE_IFELSE(
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[AC_LANG_BOOL_COMPILE_TRY(
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[AC_INCLUDES_DEFAULT],
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[[($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$1_t" != no && break
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[($ac_type) -1 >> ($[]2 - 1) == 1])],
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[AS_CASE([$ac_type], [uint$[]2""_t],
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[AS_VAR_SET([$[]3], [yes])],
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[AS_VAR_SET([$[]3], [$ac_type])])])
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AS_VAR_IF([$[]3], [no], [], [break])
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done])
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case $ac_cv_c_uint$1_t in #(
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AS_LINENO_POP
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])# _AC_TYPE_UNSIGNED_INT_BODY
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# _AC_TYPE_UNSIGNED_INT(NBITS)
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# ----------------------------
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# Set a variable ac_cv_c_uintNBITS_t to `yes' if uintNBITS_t is available,
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# `no' if it is not and no replacement types could be found, and a C type
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# if it is not available but a replacement unsigned integer type of width
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# exactly NBITS bits was found. In the third case, uintNBITS_t is AC_DEFINEd
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# to type, as well.
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AC_DEFUN([_AC_TYPE_UNSIGNED_INT],
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[AC_REQUIRE_SHELL_FN([ac_func_c_find_uintX_t],
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[AS_FUNCTION_DESCRIBE([ac_func_c_find_uintX_t], [LINENO BITS VAR],
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[Finds an unsigned integer type with width BITS, setting cache variable VAR
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accordingly.])],
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[$0_BODY])]dnl
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[ac_func_c_find_uintX_t "$LINENO" "$1" "ac_cv_c_uint$1_t"
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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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