diff --git a/trunk/c5/GNUmakefile b/trunk/c5/GNUmakefile
index 65825f3a..9ca9fab2 100644
--- a/trunk/c5/GNUmakefile
+++ b/trunk/c5/GNUmakefile
@@ -1,4 +1,4 @@
-CXXFLAGS = -DNDEBUG -g -O2
+CXXFLAGS = -DNDEBUG -g -O2 -fPIC
 # the following options reduce code size, but breaks link or makes link very slow on some systems
 # CXXFLAGS += -ffunction-sections -fdata-sections
 # LDFLAGS += -Wl,--gc-sections