109 lines
3.8 KiB
Plaintext
109 lines
3.8 KiB
Plaintext
dnl -*- Autoconf -*-
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dnl RUBY_CHECK_SIZEOF [typename], [maybe same size types], [macros], [include]
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AC_DEFUN([RUBY_CHECK_SIZEOF],
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[dnl
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AS_VAR_PUSHDEF([rbcv_var], [rbcv_sizeof_var])dnl
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AS_VAR_PUSHDEF([cond], [rbcv_sizeof_cond])dnl
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AS_VAR_PUSHDEF([t], [rbcv_sizeof_type])dnl
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AS_VAR_PUSHDEF([s], [rbcv_sizeof_size])dnl
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]
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[m4_bmatch([$1], [\.], [], [if test "$universal_binary" = yes; then])
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AC_CACHE_CHECK([size of $1], [AS_TR_SH([ac_cv_sizeof_$1])], [
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unset AS_TR_SH(ac_cv_sizeof_$1)
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rbcv_var="
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typedef m4_bpatsubst([$1], [\..*]) ac__type_sizeof_;
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static ac__type_sizeof_ *rbcv_ptr;
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@%:@define AS_TR_CPP(SIZEOF_$1) sizeof((*rbcv_ptr)[]m4_bmatch([$1], [\.], .m4_bpatsubst([$1], [^[^.]*\.])))
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"
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m4_ifval([$2], [test -z "${AS_TR_SH(ac_cv_sizeof_$1)+set}" && {
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for t in $2; do
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AC_COMPILE_IFELSE(
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[AC_LANG_BOOL_COMPILE_TRY(AC_INCLUDES_DEFAULT([$4]
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[$rbcv_var]),
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[AS_TR_CPP(SIZEOF_$1) == sizeof($t)])], [
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AS_TR_SH(ac_cv_sizeof_$1)=AS_TR_CPP([SIZEOF_]$t)
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break])
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done
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}], [
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AC_COMPUTE_INT([AS_TR_SH(ac_cv_sizeof_$1)], [AS_TR_CPP(SIZEOF_$1)],
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[AC_INCLUDES_DEFAULT([$4])
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$rbcv_var],
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[AS_TR_SH(ac_cv_sizeof_$1)=])
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])
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unset cond
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m4_ifval([$3], [test -z "${AS_TR_SH(ac_cv_sizeof_$1)+set}" && {
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for s in 32 64 128; do
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for t in $3; do
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cond="${cond}
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@%:@${cond+el}if defined(__${t}${s}__) || defined(__${t}${s}) || defined(_${t}${s}) || defined(${t}${s})"
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hdr="AC_INCLUDES_DEFAULT([$4
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@%:@if defined(__${t}${s}__) || defined(__${t}${s}) || defined(_${t}${s}) || defined(${t}${s})
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@%:@ define AS_TR_CPP(HAVE_$1) 1
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@%:@else
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@%:@ define AS_TR_CPP(HAVE_$1) 0
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@%:@endif])"
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AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$hdr], [!AS_TR_CPP(HAVE_$1)])], [continue])
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AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$hdr]
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[$rbcv_var],
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[AS_TR_CPP(HAVE_$1) == (AS_TR_CPP(SIZEOF_$1) == ($s / $rb_cv_char_bit))])],
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[AS_TR_SH(ac_cv_sizeof_$1)="${AS_TR_SH(ac_cv_sizeof_$1)+${AS_TR_SH(ac_cv_sizeof_$1)-} }${t}${s}"; continue])
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AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([$hdr]
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[
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@%:@if AS_TR_CPP(HAVE_$1)
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$rbcv_var
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@%:@else
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@%:@define AS_TR_CPP(SIZEOF_$1) 0
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@%:@endif
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],
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[AS_TR_CPP(HAVE_$1) == (AS_TR_CPP(SIZEOF_$1) == (m4_bmatch([$2], [^[0-9][0-9]*$], [$2], [($s / $rb_cv_char_bit)])))])],
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[AS_TR_SH(ac_cv_sizeof_$1)="${AS_TR_SH(ac_cv_sizeof_$1)+${AS_TR_SH(ac_cv_sizeof_$1)-} }${t}${s}m4_bmatch([$2], [^[0-9][0-9]*$], [:$2])"])
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done
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done
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}])
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test "${AS_TR_SH(ac_cv_sizeof_$1)@%:@@<:@1-9@:>@}" = "${AS_TR_SH(ac_cv_sizeof_$1)}" &&
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m4_ifval([$2][$3],
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[test "${AS_TR_SH(ac_cv_sizeof_$1)@%:@SIZEOF_}" = "${AS_TR_SH(ac_cv_sizeof_$1)}" && ]){
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test "$universal_binary" = yes && cross_compiling=yes
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AC_COMPUTE_INT([t], AS_TR_CPP(SIZEOF_$1), [AC_INCLUDES_DEFAULT([$4])]
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[${cond+$cond
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@%:@else}
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$rbcv_var
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${cond+@%:@endif}
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@%:@ifndef AS_TR_CPP(SIZEOF_$1)
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@%:@define AS_TR_CPP(SIZEOF_$1) 0
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@%:@endif], [t=0])
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test "$universal_binary" = yes && cross_compiling=$real_cross_compiling
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AS_IF([test ${t-0} != 0], [
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AS_TR_SH(ac_cv_sizeof_$1)="${AS_TR_SH(ac_cv_sizeof_$1)+${AS_TR_SH(ac_cv_sizeof_$1)-} }${t}"
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])
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}
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: ${AS_TR_SH(ac_cv_sizeof_$1)=0}
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])
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{
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unset cond
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for t in ${AS_TR_SH(ac_cv_sizeof_$1)-}; do
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AS_CASE(["$t"],
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[[[0-9]*|SIZEOF_*]], [
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${cond+echo "@%:@else"}
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echo "[@%:@define ]AS_TR_CPP(SIZEOF_$1) $t"
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break
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],
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[
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s=`expr $t : ['.*[^0-9]\([0-9][0-9]*\)$']`
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AS_CASE([$t], [*:*], [t="${t%:*}"], [s=`expr $s / $rb_cv_char_bit`])
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echo "@%:@${cond+el}if defined(__${t}__) || defined(__${t}) || defined(_${t}) || defined($t)"
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echo "@%:@define AS_TR_CPP(SIZEOF_$1) $s"
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cond=1
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])
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done
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${cond+echo "@%:@endif"}
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} >> confdefs.h
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m4_bmatch([$1], [\.], [], [else
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AC_CHECK_SIZEOF([$1], 0, [$4])
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fi])
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AS_VAR_POPDEF([rbcv_var])dnl
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AS_VAR_POPDEF([cond])dnl
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AS_VAR_POPDEF([t])dnl
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AS_VAR_POPDEF([s])dnl
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])dnl
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