do not build package unless needed

Change-Id: I7e61de3009e20aa13bdc2a333c803130eb88f36d

libexttextcat/ExternalPackage_exttextcat.mk

@@ -9,11 +9,8 @@
 
 $(eval $(call gb_ExternalPackage_ExternalPackage,exttextcat,exttextcat))
 
-ifneq ($(COM),MSC)
-
 $(eval $(call gb_ExternalPackage_use_external_project,exttextcat,exttextcat))
 
 $(eval $(call gb_ExternalPackage_add_file,exttextcat,lib/libexttextcat.a,src/.libs/libexttextcat-2.0.a))
 
-endif
 # vim: set noet sw=4 ts=4:

libexttextcat/Module_libexttextcat.mk

@@ -12,7 +12,6 @@ $(eval $(call gb_Module_Module,libexttextcat))
 ifeq ($(SYSTEM_LIBEXTTEXTCAT),NO)
 $(eval $(call gb_Module_add_targets,libexttextcat,\
 	UnpackedTarball_exttextcat \
-	ExternalPackage_exttextcat \
 	Zip_fingerprint \
 ))
 ifeq ($(COM),MSC)
@@ -21,6 +20,7 @@ $(eval $(call gb_Module_add_targets,libexttextcat,\
 ))
 else
 $(eval $(call gb_Module_add_targets,libexttextcat,\
+	ExternalPackage_exttextcat \
 	ExternalProject_exttextcat \
 ))
 endif