diff --git a/scripts/config-release.mk.in b/scripts/config-release.mk.in
index 5936c6135..0ba4c8222 100644
--- a/scripts/config-release.mk.in
+++ b/scripts/config-release.mk.in
@@ -1,7 +1,7 @@
 CC=@CC@
 PREFIX=@prefix@
 CXX=@CXX@
-CXXFLAGS=@CPPFLAGS@ @CXXFLAGS@ -c -O3 -fomit-frame-pointer -msse -msse2 
+CXXFLAGS=@CPPFLAGS@ @CXXFLAGS@ -c -O3 -D _EXTERNAL_RELEASE -fomit-frame-pointer -msse -msse2 
 CXX_OUT_FLAG=-o 
 OBJ_EXT=.o
 LIB_EXT=.a