diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/configure.in b/configure.in index ce9939cdd9..5f7ae53153 100644 --- a/configure.in +++ b/configure.in @@ -2712,6 +2712,17 @@ if test x"$enable_pthread" = xyes; then fi fi if test x"$ac_cv_header_ucontext_h" = xyes; then + AC_CACHE_CHECK([if mcontext_t is a pointer], [rb_cv_mcontext_t_ptr], + [AC_TRY_COMPILE([@%:@include <ucontext.h> + mcontext_t test(mcontext_t mc) {return mc+1;} + ], + [test(0);], + [rb_cv_mcontext_t_ptr=yes], [rb_cv_mcontext_t_ptr=no])]) + if test x"$rb_cv_mcontext_t_ptr" = xyes; then + AC_DEFINE_UNQUOTED(DEFINE_MCONTEXT_PTR(mc, uc), mcontext_t mc = (uc)->uc_mcontext) + else + AC_DEFINE_UNQUOTED(DEFINE_MCONTEXT_PTR(mc, uc), mcontext_t *mc = &(uc)->uc_mcontext) + fi if test x"$rb_with_pthread" = xyes; then AC_CHECK_FUNCS(getcontext setcontext) fi |