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-rw-r--r--lib/mkmf.rb5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index d378d50fbd..1430aa30ef 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -1770,8 +1770,9 @@ LIBRUBY = #{CONFIG['LIBRUBY']}
LIBRUBY_A = #{CONFIG['LIBRUBY_A']}
LIBRUBYARG_SHARED = #$LIBRUBYARG_SHARED
LIBRUBYARG_STATIC = #$LIBRUBYARG_STATIC
-OUTFLAG = #{OUTFLAG}
-COUTFLAG = #{COUTFLAG}
+empty =
+OUTFLAG = #{OUTFLAG}$(empty)
+COUTFLAG = #{COUTFLAG}$(empty)
RUBY_EXTCONF_H = #{$extconf_h}
cflags = #{CONFIG['cflags']}