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-rw-r--r--tool/m4/ruby_default_arch.m41
1 files changed, 1 insertions, 0 deletions
diff --git a/tool/m4/ruby_default_arch.m4 b/tool/m4/ruby_default_arch.m4
index 6efb72d297..a53bb5fc41 100644
--- a/tool/m4/ruby_default_arch.m4
+++ b/tool/m4/ruby_default_arch.m4
@@ -1,3 +1,4 @@
+# -*- Autoconf -*-
AC_DEFUN([RUBY_DEFAULT_ARCH], [
AC_MSG_CHECKING([arch option])
AS_CASE([$1],