package/matchbox-lib: correctly fix the .pc file

First, the .pc file was so far fixed as a post-configure hook of the
matchbox-fakekey package, by directly tweaking the .pc file installed in
staging by matchbox-lib. That's uterly wrong and bad.

So, we move the fix to matchbox-lib.

Second, it was incorreclty tweaking the .pc file when xlib_libXft was
not enabled, because only then a path to staging was present.

Third, even when xlib_libXft was enabled, the tweaking was still wrong,
because unnecessary.

Fix all that.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/matchbox-fakekey/matchbox-fakekey.mk

@@ -14,8 +14,8 @@ MATCHBOX_FAKEKEY_DEPENDENCIES = matchbox-lib xlib_libXtst
 MATCHBOX_FAKEKEY_CONF_OPTS = --enable-expat
 
 define MATCHBOX_FAKEKEY_POST_CONFIGURE_FIXES
-	$(SED) 's:-I[^$$].*/usr/include/freetype2:-I/usr/include/freetype2:' $(STAGING_DIR)/usr/lib/pkgconfig/libmb.pc
-	$(SED) 's:^SUBDIRS = fakekey src tests.*:SUBDIRS = fakekey src:g' $(MATCHBOX_FAKEKEY_DIR)/Makefile
+	$(SED) 's:^SUBDIRS = fakekey src tests.*:SUBDIRS = fakekey src:g' \
+		$(@D)/Makefile
 endef
 
 MATCHBOX_FAKEKEY_POST_CONFIGURE_HOOKS += MATCHBOX_FAKEKEY_POST_CONFIGURE_FIXES

package/matchbox-lib/matchbox-lib.mk

@@ -15,7 +15,8 @@ MATCHBOX_LIB_CONF_OPTS = --disable-doxygen-docs
 MATCHBOX_LIB_CONF_ENV = LIBS="-lX11"
 
 define MATCHBOX_LIB_POST_INSTALL_FIXES
-	$(SED) 's:-I[^$$].*/usr/include/freetype2:-I/usr/include/freetype2:' \
+	$(SED) 's:-I$(STAGING_DIR)/:-I/:g' \
+		-e 's:-I/usr/include\( \|$$\)::g' \
 		$(STAGING_DIR)/usr/lib/pkgconfig/libmb.pc
 endef