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-rw-r--r--configure.in1
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index bf7fdb6929..4aed3a1357 100644
--- a/configure.in
+++ b/configure.in
@@ -269,6 +269,7 @@ if test "$GCC" = yes; then
linker_flag=-Wl,
: ${optflags=-O3}
AS_CASE(["$target_os"], [linux*|darwin*], [: ${debugflags=-ggdb}])
+ RUBY_APPEND_OPTIONS(XCFLAGS, ["-include ruby/missing.h"])
else
linker_flag=
fi