diff options
| -rw-r--r-- | configure.ac | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/configure.ac b/configure.ac index 3b740e0ff5..845e7e154d 100644 --- a/configure.ac +++ b/configure.ac @@ -730,12 +730,14 @@ test -z "${ac_env_CFLAGS_set}" -a -n "${cflags+set}" && eval CFLAGS="\"$cflags $ test -z "${ac_env_CXXFLAGS_set}" -a -n "${cxxflags+set}" && eval CXXFLAGS="\"$cxxflags $ARCH_FLAG\"" } -AC_PREPROC_IFELSE([AC_LANG_SOURCE([[ - int main(void) { - return __extension__ ({ int a = 0; a; }); - } - ]])], - [AC_DEFINE(HAVE_STMT_AND_DECL_IN_EXPR, 1)]) +AC_CACHE_CHECK([whether compiler has statement and declarations in expressions], + rb_cv_have_stmt_and_decl_in_expr, + [AC_TRY_COMPILE([],[ __extension__ ({ int a = 0; a; }); ], + [rb_cv_have_stmt_and_decl_in_expr=yes], + [rb_cv_have_stmt_and_decl_in_expr=no])]) +AS_IF([test "$rb_cv_have_stmt_and_decl_in_expr" = yes], [ + AC_DEFINE(HAVE_STMT_AND_DECL_IN_EXPR) +]) : "header and library section" && { AC_ARG_WITH(winnt-ver, |