contrib: force PIC for CMake stuff

contrib/src/gme/rules.mak

@@ -16,6 +16,6 @@ game-music-emu: game-music-emu-$(GME_VERSION).tar.bz2 .sum-gme
 	$(MOVE)
 
 .gme: game-music-emu toolchain.cmake
-	cd $< && $(CMAKE) .
+	cd $< && $(HOSTVARS_PIC) $(CMAKE) .
 	cd $< && $(MAKE) install
 	touch $@

contrib/src/mpcdec/rules.mak

@@ -39,7 +39,7 @@ endif
 	touch $@
 
 .mpcdec: musepack toolchain.cmake
-	cd $< && $(CMAKE) -DSHARED=OFF .
+	cd $< && $(HOSTVARS_PIC) $(CMAKE) -DSHARED=OFF .
 	cd $< && $(MAKE) install
 	mkdir -p -- "$(PREFIX)/lib"
 	cd $< && cp libmpcdec/libmpcdec_static.a "$(PREFIX)/lib/libmpcdec.a"

contrib/src/taglib/rules.mak

@@ -20,7 +20,7 @@ endif
 	$(MOVE)
 
 .taglib: taglib toolchain.cmake
-	cd $< && $(HOSTVARS) $(CMAKE) \
+	cd $< && $(HOSTVARS_PIC) $(CMAKE) \
 		-DENABLE_STATIC:BOOL=ON \
 		-DWITH_ASF:BOOL=ON \
 		-DWITH_MP4:BOOL=ON .