.PHONY: all
all: portaudio include

UNAME = ${shell uname}
ifeq (${UNAME},Linux)
-include ~/.stem.defines
STEM_SHARED_DIR ?= /usr/local/stem
HOST_PLATFORM = linux
else ifeq (${UNAME},Darwin)
-include ~/.stem.defines
STEM_SHARED_DIR ?= /usr/local/stem
HOST_PLATFORM = macosx
else
STEM_SHARED_DIR ?= C:/stem
-include ${STEM_SHARED_DIR}/stem.defines
HOST_PLATFORM = windows
endif

TARGET_PLATFORMS_macosx = macosx
TARGET_PLATFORMS_linux = linux32 linux64
TARGET_PLATFORMS_windows = win32 win64

PROJECT_NAME = portaudio
PROJECT_VERSION = v190600_20161030
TARGET_NAME = libportaudio
LIBRARY_PRISTINE_SUBDIR = pa_stable_v190600_20161030
LIBRARY_WORKING_SUBDIR = build/intermediate/${LIBRARY_PRISTINE_SUBDIR}

PLATFORMS = ${filter ${TARGET_PLATFORMS_${HOST_PLATFORM}},macosx linux32 linux64 win32 win64}
THIRDPARTY_LIBRARY_DEPENDENCIES = 
LINKFLAGS_macosx = -framework AudioUnit -framework AudioToolbox -framework CoreAudio
LINKFLAGS_linux32 = -lasound
LINKFLAGS_linux64 = -lasound

CC_win32 = ${CC_win32_i386}
CC_win64 = ${CC_win64_x86_64}

CC_linux32 = gcc
ARCHS_linux32 = i386
CCFLAGS_linux32 = -m32

CC_linux64 = gcc
ARCHS_linux64 = x86_64
CCFLAGS_linux64 = -m64

INCLUDES = \
	${LIBRARY_WORKING_SUBDIR}/include/portaudio.h



define library_template_macosx #(platform)
build/intermediate/${TARGET_NAME}-$1/${TARGET_NAME}.a:
	cp "${LIBRARY_WORKING_SUBDIR}/configure" "${LIBRARY_WORKING_SUBDIR}/configure_original"
	ruby -e "print STDIN.read.gsub(/-arch ppc(64)?/, '')" < "${LIBRARY_WORKING_SUBDIR}/configure_original" > "${LIBRARY_WORKING_SUBDIR}/configure"
	cd ${LIBRARY_WORKING_SUBDIR}; \
	./configure && \
	${MAKE}
	
	mkdir -p $${dir $$@}
	cp ${LIBRARY_WORKING_SUBDIR}/lib/.libs/libportaudio.a $$@
	
	cd ${LIBRARY_WORKING_SUBDIR}; \
	${MAKE} clean
endef

define library_template_windows #(platform)
build/intermediate/${TARGET_NAME}-$1/${TARGET_NAME}.a:
	cd ${LIBRARY_WORKING_SUBDIR}; \
	sh configure --disable-shared CC="${CC_$1}" AR="${AR_$1}" RANLIB="${RANLIB_$1}"; \
	make
	
	mkdir -p $${dir $$@}
	cp ${LIBRARY_WORKING_SUBDIR}/lib/.libs/libportaudio.a $$@
	
	cd ${LIBRARY_WORKING_SUBDIR}; \
	make clean
endef

define library_template_linux #(platform)
build/intermediate/${TARGET_NAME}-$1/${TARGET_NAME}.a:
	cd ${LIBRARY_WORKING_SUBDIR}; \
	export CC="${CC_$1} ${CCFLAGS_$1}"; \
	export LD="${CC_$1} ${CCFLAGS_$1}"; \
	export CFLAGS="-fno-stack-protector"; \
	./configure --disable-shared && \
	${MAKE}
	
	mkdir -p $${dir $$@}
	cp ${LIBRARY_WORKING_SUBDIR}/lib/.libs/libportaudio.a $$@
	
	cd ${LIBRARY_WORKING_SUBDIR}; \
	${MAKE} clean
endef

#Produces static library build targets for each arch/platform/target for library targets
${foreach platform,${PLATFORMS}, \
	${eval ${call library_template_${HOST_PLATFORM},${platform}}} \
}



define assemble_library_macosx #(platform)
build/${PROJECT_NAME}/$1/${TARGET_NAME}.a: build/intermediate/${TARGET_NAME}-$1/${TARGET_NAME}.a
	mkdir -p $${dir $$@}
	lipo -create -output $$@ $$^
endef

define assemble_library_linux #(platform)
build/${PROJECT_NAME}/$1/${TARGET_NAME}.a: build/intermediate/${TARGET_NAME}-$1/${TARGET_NAME}.a
	mkdir -p $${dir $$@}
	cp $$^ $$@
endef

define assemble_library_windows #(platform)
build/${PROJECT_NAME}/$1/${TARGET_NAME}.a: build/intermediate/${TARGET_NAME}-$1/${TARGET_NAME}.a
	mkdir -p $${dir $$@}
	cp $$^ $$@
endef

#Produces final library build targets
${foreach platform,${PLATFORMS}, \
	${eval ${call assemble_library_${HOST_PLATFORM},${platform}}} \
}

${LIBRARY_WORKING_SUBDIR}: ${LIBRARY_PRISTINE_SUBDIR}
	mkdir -p ${dir $@}
	rm -rf $@
	cp -r $^ $@
	find $@ -name .svn -print0 | xargs -0 rm -rf

.PHONY: ${PROJECT_NAME}
${PROJECT_NAME}: ${LIBRARY_WORKING_SUBDIR} ${foreach platform,${PLATFORMS},build/${PROJECT_NAME}/${platform}/${TARGET_NAME}.a}

.PHONY: include
include: ${PROJECT_NAME}
	mkdir -p build/include
	cp ${INCLUDES} build/include

.PHONY: clean
clean:
	rm -rf build

INSTALL_DIR = ${STEM_SHARED_DIR}/${PROJECT_NAME}/${PROJECT_VERSION}

.PHONY: install
install:
	mkdir -p "${INSTALL_DIR}/include" "${INSTALL_DIR}/library"
	cp -r build/include/* ${INSTALL_DIR}/include
	cp -r build/${PROJECT_NAME}/* ${INSTALL_DIR}/library