contribs: add FLAC

contrib/src/flac/SHA512SUMS

+39b216239341fbfe210c3a2fc0d0531ecae26c425365c4b6d4fc1081e44e6dc7a9aba8d4c79cc8025386d0a7bb0d25c413c9b64cf7da9ab04ca34a56d2699787  flac-1.2.1.tar.gz

contrib/src/flac/libFLAC-pc.patch

+--- flac/src/libFLAC/flac.pc.in	2007-02-07 02:07:32.000000000 +0100
++++ flac.new/src/libFLAC/flac.pc.in	2011-06-10 17:53:44.337825845 +0200
+@@ -6,5 +6,6 @@
+ Name: FLAC
+ Description: Free Lossless Audio Codec Library
+ Version: @VERSION@
+-Libs: -L${libdir} -lFLAC -lm
++Libs: -L${libdir} -lFLAC -logg -lm
+ Cflags: -I${includedir}/FLAC
++Requires.private: ogg

contrib/src/flac/rules.mak

+# FLAC
+
+FLAC_VERSION := 1.2.1
+FLAC_URL := $(SF)/flac/flac-$(FLAC_VERSION).tar.gz
+
+PKGS += flac
+
+$(TARBALLS)/flac-$(FLAC_VERSION).tar.gz:
+	$(DOWNLOAD) $(FLAC_URL)
+
+.sum-flac: $(TARBALLS)/flac-$(FLAC_VERSION).tar.gz
+	$(CHECK_SHA512)
+	touch $@
+
+flac: $(TARBALLS)/flac-$(FLAC_VERSION).tar.gz .sum-flac
+	$(UNPACK_GZ)
+	(cd $@-$(FLAC_VERSION) && patch -p1) < $(SRC)/flac/flac-win32.patch
+	(cd $@-$(FLAC_VERSION) && patch -p1) < $(SRC)/flac/libFLAC-pc.patch
+ifdef HAVE_MACOSX
+	cd $<-$(FLAC_VERSION) && sed -e 's,-dynamiclib,-dynamiclib -arch $(ARCH),' -i.orig configure
+endif
+	mv $@-$(FLAC_VERSION) $@
+	touch $@
+
+FLACCONF := $(HOSTCONF) \
+	--disable--thorough-tests \
+	--disable-doxygen-docs \
+	--disable-xmms-plugin \
+	--disable-cpplibs \
+	--disable-oggtest
+# TODO? --enable-sse
+ifdef HAVE_MACOSX
+ifneq ($(findstring $(ARCH),i386 x86_64),)
+FLAC_DISABLE_FLAGS += --disable-asm-optimizations
+endif
+endif
+
+.flac: flac .ogg
+	cd $< && $(HOSTVARS) ./configure $(FLACCONF)
+	cd $</src && $(MAKE) -C libFLAC install
+	cd $< && $(MAKE) -C include install
+	touch $@