53 lines
2.2 KiB
Plaintext
53 lines
2.2 KiB
Plaintext
dnl -*- Autoconf -*-
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AC_DEFUN([RUBY_SETJMP_TYPE], [
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RUBY_CHECK_BUILTIN_SETJMP
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RUBY_CHECK_SETJMP(_setjmpex, [], [@%:@include <setjmpex.h>])
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RUBY_CHECK_SETJMP(_setjmp)
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RUBY_CHECK_SETJMP(sigsetjmp, [sigjmp_buf])
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AC_MSG_CHECKING(for setjmp type)
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setjmp_suffix=
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unset setjmp_sigmask
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AC_ARG_WITH(setjmp-type,
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AS_HELP_STRING([--with-setjmp-type], [select setjmp type]),
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[
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AS_CASE([$withval],
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[__builtin_setjmp], [setjmp=__builtin_setjmp],
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[_setjmp], [ setjmp_prefix=_],
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[sigsetjmp,*], [ setjmp_prefix=sig setjmp_sigmask=`expr "$withval" : 'sigsetjmp\(,.*\)'`],
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[sigsetjmp], [ setjmp_prefix=sig],
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[setjmp], [ setjmp_prefix=],
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[setjmpex], [ setjmp_prefix= setjmp_suffix=ex],
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[''], [ unset setjmp_prefix],
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[ AC_MSG_ERROR(invalid setjmp type: $withval)])], [unset setjmp_prefix])
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setjmp_cast=
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AS_IF([test ${setjmp_prefix+set}], [
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AS_IF([test "${setjmp_prefix}" && eval test '$ac_cv_func_'${setjmp_prefix}setjmp${setjmp_suffix} = no], [
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AC_MSG_ERROR(${setjmp_prefix}setjmp${setjmp_suffix} is not available)
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])
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], [{ AS_CASE("$ac_cv_func___builtin_setjmp", [yes*], [true], [false]) }], [
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setjmp_cast=`expr "$ac_cv_func___builtin_setjmp" : "yes with cast (\(.*\))"`
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setjmp_prefix=__builtin_
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setjmp_suffix=
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], [test "$ac_cv_header_setjmpex_h:$ac_cv_func__setjmpex" = yes:yes], [
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setjmp_prefix=
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setjmp_suffix=ex
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], [test "$ac_cv_func__setjmp" = yes], [
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setjmp_prefix=_
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setjmp_suffix=
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], [test "$ac_cv_func_sigsetjmp" = yes], [
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AS_CASE([$target_os],[solaris*|cygwin*],[setjmp_prefix=],[setjmp_prefix=sig])
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setjmp_suffix=
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], [
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setjmp_prefix=
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setjmp_suffix=
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])
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AS_IF([test x$setjmp_prefix:$setjmp_sigmask = xsig:], [
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setjmp_sigmask=,0
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])
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AC_MSG_RESULT(${setjmp_prefix}setjmp${setjmp_suffix}${setjmp_cast:+\($setjmp_cast\)}${setjmp_sigmask})
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AC_DEFINE_UNQUOTED([RUBY_SETJMP(env)], [${setjmp_prefix}setjmp${setjmp_suffix}($setjmp_cast(env)${setjmp_sigmask})])
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AC_DEFINE_UNQUOTED([RUBY_LONGJMP(env,val)], [${setjmp_prefix}longjmp($setjmp_cast(env),val)])
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AS_IF([test "(" "$GCC" != yes ")" -o x$setjmp_prefix != x__builtin_], AC_DEFINE_UNQUOTED(RUBY_JMP_BUF, ${setjmp_sigmask+${setjmp_prefix}}jmp_buf))
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AS_IF([test x$setjmp_suffix = xex], [AC_DEFINE_UNQUOTED(RUBY_USE_SETJMPEX, 1)])
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])dnl
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