diff --git a/src/cc/Makefile b/src/cc/Makefile
index 3522a0c08..a3c54d81d 100644
--- a/src/cc/Makefile
+++ b/src/cc/Makefile
@@ -1,7 +1,8 @@
 SHELL		= /bin/sh
 CC		= gcc
+CC_DARWIN	= g++-6
 CC_WIN		= x86_64-w64-mingw32-gcc-posix
-CFLAGS_DARWIN	= -std=c++11 -I../../depends/$(shell echo `../..//depends/config.guess`/include) -I../univalue/include -I../cryptoconditions/include -I../cryptoconditions/src -I../cryptoconditions/src/asn -I.. -I. -fPIC -shared -c
+CFLAGS_DARWIN	= -std=c++11 -arch x86_64 -I/usr/local/Cellar/gcc\@6/6.4.0_2/include/c++/6.4.0/ -I../../depends/$(shell echo `../..//depends/config.guess`/include) -I../univalue/include -I../cryptoconditions/include -I../cryptoconditions/src -I../cryptoconditions/src/asn -I.. -I. -fPIC -c -Wl,-undefined -Wl,dynamic_lookup
 CFLAGS		= -std=c++11 -I../univalue/include -I../cryptoconditions/include -I../cryptoconditions/src -I../cryptoconditions/src/asn -I.. -I. -fPIC -shared -c
 CFLAGS_WIN	= -std=c++11 -I../../depends/$(shell echo `../..//depends/config.guess`/include) -I../univalue/include -I../cryptoconditions/include -I../cryptoconditions/src -I../cryptoconditions/src/asn -I.. -I. -fPIC -shared -c
 DEBUGFLAGS	= -O0 -D _DEBUG
@@ -19,13 +20,13 @@ all: $(TARGET)
 $(TARGET): $(SOURCES)
 	$(info Building cclib to src/)
 ifeq ($(OS),Darwin)
-	$(CC) $(CFLAGS_DARWIN) $(DEBUGFLAGS) -o $(TARGET) $(SOURCES)
+	$(CC_DARWIN) $(CFLAGS_DARWIN) $(DEBUGFLAGS) -o $(TARGET) $(SOURCES)
 else ifeq ($(OS),Linux)
 	$(CC) $(CFLAGS) $(DEBUGFLAGS) -o $(TARGET) $(SOURCES)
 #else ifeq ($(WIN_HOST),True) - todo: pass ENV var from build.sh if WIN host
 else
-	$(info else)
-	#$(CC_WIN) $(CFLAGS_WIN) $(DEBUGFLAGS) -o $(TARGET_WIN) $(SOURCES)
+	$(info WINDOWS)
+	$(CC_WIN) $(CFLAGS_WIN) $(DEBUGFLAGS) -o $(TARGET_WIN) $(SOURCES)
 endif
 
 clean: