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-rw-r--r--ext/extmk.rb.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/extmk.rb.in b/ext/extmk.rb.in
index b7db0a31e9..dd7cabfc98 100644
--- a/ext/extmk.rb.in
+++ b/ext/extmk.rb.in
@@ -615,7 +615,7 @@ def extmake(target)
end
$LOCAL_LIBS = "" # to be assigned in extconf.rb
$CFLAGS = ""
- $CPPFLAGS = ""
+ $CPPFLAGS = "@CPPFLAGS@"
$LDFLAGS = ""
$LIBPATH = [$libdir]