mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
0664a6377a
This does not (yet) change anything. The generated configure file is the identical to previous one (except several empty lines added and deleted). git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61981 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
26 lines
802 B
Text
26 lines
802 B
Text
AC_DEFUN([RUBY_CHECK_BUILTIN_SETJMP], [
|
|
AS_IF([test x"${ac_cv_func___builtin_setjmp}" = xyes], [
|
|
unset ac_cv_func___builtin_setjmp
|
|
])
|
|
AC_CACHE_CHECK(for __builtin_setjmp, ac_cv_func___builtin_setjmp,
|
|
[
|
|
ac_cv_func___builtin_setjmp=no
|
|
for cast in "" "(void **)"; do
|
|
RUBY_WERROR_FLAG(
|
|
[AC_TRY_LINK([@%:@include <setjmp.h>
|
|
@%:@include <stdio.h>
|
|
jmp_buf jb;
|
|
@%:@ifdef NORETURN
|
|
NORETURN(void t(void));
|
|
@%:@endif
|
|
void t(void) {__builtin_longjmp($cast jb, 1);}
|
|
int jump(void) {(void)(__builtin_setjmp($cast jb) ? 1 : 0); return 0;}],
|
|
[
|
|
void (*volatile f)(void) = t;
|
|
if (!jump()) printf("%d\n", f != 0);
|
|
],
|
|
[ac_cv_func___builtin_setjmp="yes with cast ($cast)"])
|
|
])
|
|
test "$ac_cv_func___builtin_setjmp" = no || break
|
|
done])
|
|
])dnl
|