summaryrefslogtreecommitdiff
path: root/tool/m4/ruby_cppoutfile.m4
diff options
context:
space:
mode:
Diffstat (limited to 'tool/m4/ruby_cppoutfile.m4')
-rw-r--r--tool/m4/ruby_cppoutfile.m41
1 files changed, 1 insertions, 0 deletions
diff --git a/tool/m4/ruby_cppoutfile.m4 b/tool/m4/ruby_cppoutfile.m4
index d5af3e02d0..7c81c4f354 100644
--- a/tool/m4/ruby_cppoutfile.m4
+++ b/tool/m4/ruby_cppoutfile.m4
@@ -1,3 +1,4 @@
+# -*- Autoconf -*-
AC_DEFUN([RUBY_CPPOUTFILE],
[AC_CACHE_CHECK(whether ${CPP} accepts -o, rb_cv_cppoutfile,
[save_CPPFLAGS="$CPPFLAGS"