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-rw-r--r--ext/raindrops/extconf.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/raindrops/extconf.rb b/ext/raindrops/extconf.rb
index 7570f24..792e509 100644
--- a/ext/raindrops/extconf.rb
+++ b/ext/raindrops/extconf.rb
@@ -143,7 +143,7 @@ SRC
       $defs.push(format("-DHAVE_GCC_ATOMIC_BUILTINS"))
       true
     else
-      prev_cflags = $CFLAGS
+      $CFLAGS = prev_cflags
       false
     end
   end