contrib: add portaudio

contrib/src/portaudio/SHA512SUMS

+28cc2a13d8b4a6a60c5bcaab74971bdb7aa10cbce38b442dced974efd0a5180f291452099fd10a816bb715d5eb29428711493a0a2a26f30a7ffa91234bb26517  portaudio-19_20110326.tar.gz

contrib/src/portaudio/portaudio-cross.patch

+diff -ruN portaudio/Makefile.in portaudio.n/Makefile.in
+--- portaudio/Makefile.in	2007-10-24 17:29:04.000000000 +0200
++++ portaudio.n/Makefile.in	2007-12-18 05:43:27.000000000 +0100
+@@ -120,7 +120,7 @@
+ SUBDIRS =
+ @ENABLE_CXX_TRUE@SUBDIRS += bindings/cpp
+ 
+-all: lib/$(PALIB) all-recursive tests
++all: lib/$(PALIB) all-recursive
+ 
+ tests: bin-stamp $(TESTS)
+ 

contrib/src/portaudio/rules.mak

+# portaudio
+
+PORTAUDIO_VERSION := 19_20110326
+PORTAUDIO_URL := http://www.portaudio.com/archives/pa_stable_v$(PORTAUDIO_VERSION).tgz
+
+PKGS += portaudio
+
+ifeq ($(call need_pkg,"portaudio"),)
+PKGS_FOUND += portaudio
+endif
+
+$(TARBALLS)/portaudio-$(PORTAUDIO_VERSION).tar.gz:
+	$(call download,$(PORTAUDIO_URL))
+
+.sum-portaudio: portaudio-$(PORTAUDIO_VERSION).tar.gz
+
+portaudio: portaudio-$(PORTAUDIO_VERSION).tar.gz .sum-portaudio
+	$(UNPACK)
+	patch -p0 < $(SRC)/portaudio/portaudio-cross.patch
+
+.portaudio: portaudio
+	cd $< && $(HOSTVARS) ./configure $(HOSTCONF)
+	cd $< && make && make install
+	touch $@