improve support for 5.1.0

packages/gecode/dev/extractor/Makefile

@@ -1,8 +1,7 @@
 GECODEDIR := $(shell g++ $(CPPFLAGS) $(CXXFLAGS) -H -E gecodedir.hh 2>&1 >/dev/null | grep gecode/kernel.hh | awk '{print $$2}' | sed 's|/kernel.hh||')
-GECODEDIR=/usr/local/opt/gecode
+GECODEDIR=/usr/local/opt/gecode/include/gecode
 GECODECONFIG := $(GECODEDIR)/support/config.hpp
 GECODEVERSION := $(shell cat $(GECODECONFIG) | egrep '\<GECODE_VERSION\>' | awk '{print $$3}' | sed 's/"//g')
-GECODEVERSION="5.1.0"
 PROTOTYPES = ../gecode-prototypes-$(GECODEVERSION).hh
 ENUMS = ../gecode-enums-$(GECODEVERSION).py
 
@@ -25,7 +24,8 @@ $(PROTOTYPES): % : xml/namespaceGecode.xml extract-prototypes.xsl
 	| sed 's/GECODE_BOOL_EXPORT //g' \
 	| grep -v '*' | sort >> $@ || { rm -f $@; exit 1; }
 
-b	cat notice.py > $@ || { rm -f $@; exit 1; }
+$(ENUMS): % : xml/namespaceGecode.xml extract-enums.xsl
+	cat notice.py > $@ || { rm -f $@; exit 1; }
 	xsltproc extract-enums.xsl $< >> $@ || { rm -f $@; exit 1; }
 
 xml/namespaceGecode.xml: Doxyfile