--- Makefile	2017-01-04 10:21:18.000000000 +0100
+++ Makefile	2017-01-04 10:23:03.000000000 +0100
@@ -20,7 +20,7 @@
 inchworm_target:
 	@echo Using $(TRINITY_COMPILER) compiler for Inchworm and Chrysalis
 	cd Inchworm && (test -e configure || autoreconf) \
-                && sh ./configure --prefix=`pwd` $(INCHWORM_CONFIGURE_FLAGS) && $(MAKE) install
+                && sh ./configure --prefix=`pwd` CC=${PREFIX}/bin/gcc $(INCHWORM_CONFIGURE_FLAGS) CXX=${PREFIX}/bin/g++ CFLAGS="-fopenmp" CXXFLAGS="-fopenmp" && $(MAKE) install
 
 chrysalis_target:
 	cd Chrysalis && $(MAKE) UNSUPPORTED=yes $(CHRYSALIS_MAKE_FLAGS)