now it breaks on including Xlib.h

.gitignore

@@ -2,3 +2,4 @@
 *.c
 *.xml
 ableC.jar
+/multiclip

Makefile

@@ -12,6 +12,9 @@ override XCFLAGS += $(addprefix -I,$(XC_INCLUDE_DIRS))
 
 override SVFLAGS += $(addprefix -I ,$(GRAMMAR_DIRS))
 
+override LIBS += $(shell pkg-config --libs bdw-gc)
+override INCLUDES += $(shell pkg-config --cflags bdw-gc)
+
 all: multiclip
 
 $(ABLEC_JAR): $(GRAMMAR_SOURCES)
@@ -19,10 +22,10 @@ $(ABLEC_JAR): $(GRAMMAR_SOURCES)
 	silver-ableC -o $@ $(SVFLAGS) $(ARTIFACT)
 
 multiclip: main.c
-	gcc -o $@ -lgc $<
+	gcc -o $@ $(LIBS) $(INCLUDES) $<
 
 main.c: main.xc $(ABLEC_JAR)
-	java -jar $(ABLEC_JAR) $< -o $@ $(XCFLAGS)
+	java -jar $(ABLEC_JAR) $< $(XCFLAGS)
 
 clean:
 	rm -f multiclip

main.xc

@@ -1,4 +1,5 @@
 #include <string.xh>
+#include <X11/Xlib.h>
 
 #include <stdio.h>