# to see the make rules:
#   make rules
#
# command uses:
#   make <name>-clean
#   make <name>
#   make rules
#   make val-<var>
#
# to add a new library:
#   vi ../configure.ac
#     add PKG_3RD(pkg,<yes/no/auto>, <ver_basename>, <lib_paths>, <inc_paths>)
#     add CHECK_LIB(pkg, <syslib>, <entry_pt>, [opt libs]) if may be in system
#     add CHECK_HEADERS(pkg, <title>, <entry_pt>) to check for devel headers
#     add CHECK_WANT(<want>, <title>, [ checks ]) around tests if conditional
#     see openexr check for example if c++ lib
#     add PKG_PROVIDE(pkg,<cond>) to instance pkg if probe succeeds
#     add to exec > global_config if additional environment needed
#   vi Makefile
#     add pkg.<data> (pkg.x = .flags, .vars, .params)
#     add $(call rules,$(call std-build,<name>,<dep>...))
#     add deps to other call rules if they require the new library
#     add config enables if other libraries use the new library
#

TOPDIR ?= $(CURDIR)/..
include $(TOPDIR)/global_config
-include $(TOPDIR)/cin_config
BLD := $(THIRDPARTY)/build

# package build flags, if needed
# need frame pointer for debugs and helps with profiling
# NOTE: the trailing blank is MANDITORY or the builds fail
# due to bugs in the build scripts from auto*
CFLAGS_ ?= -g -O2 -fno-omit-frame-pointer
CFLAGS ?= $(CFLAGS_) 
LDFLAGS += $(LDFLAGS_) 
CXXFLAGS += $(CXXFLAGS_) 

pkg-source=$(BLD)/$(1).source
pkg-config=$(BLD)/$(1).configure
pkg-built=$(BLD)/$(1).built

ext=$(lastword $(subst ., ,$(1)))
tarball=$(lastword $(sort $(wildcard src/$(1)*.tar.*)))
unpack=$(call unpack_$(call ext,$(1)),$(1))
unpack_gz=tar -xzf $(1)
unpack_bz2=tar -xjf $(1)
unpack_xz=tar -xJf $(1)
bld_depends=$(if $(ver_$(1)),$(call pkg-built,$(1)))
bld_path=$(ver_$(1))/$(2)
inc_path=$(inc_$(1))
ld_path=$(if $(ver_$(1)),-L$(call bld_path,$(1),$(2)))

#$(eval $(call std-build,pkg,deps...))
#$(pkg.cflags) added as CFLAGS+=$(cflags) to pkg.vars
#$(pkg.cppflags) added as CPPFLAGS+=$(cppflags) to pkg.vars
#$(pkg.cfg_vars) prepended to configure
#$(pkg.cfg_params) appended to configure
#$(pkg.mak_vars) prepended to make
#$(pkg.mak_params) appended to make

define std-build
# $(1)
.PHONY: $(1) $(1)-configure $(1)-src $(1)-clean
$(1): $(call pkg-built,$(1))
$(1)-configure: $(call pkg-config,$(1))
$(1)-src: $(call pkg-source,$(1))
$(1)-clean:
	rm -rf $(1)* $(BLD)/$(1).*

$(call pkg-source,$(1)):
	$(call unpack,$(call tarball,$(1))) \
	$(foreach pch,$(sort $(wildcard src/$(1).patch*)),
		patch -d $(1)* -p1 < $(pch))
	touch $$@

$(call pkg-config,$(1)): $(call pkg-source,$(1)) $(foreach dep,$(2),$(call bld_depends,$(dep)))
	@echo "CONFIGURING $(1)"
	cd $(1)* && \
		$($(1).cfg_vars) $(CFG_VARS) ./configure $($(1).cfg_params) $(CFG_PARAMS)
	touch $$@

$(call pkg-built,$(1)): $(call pkg-config,$(1))
	+$($(1).mak_vars) $(MAK_VARS) $(MAKE) -C $(1)* $($(1).mak_params) $(MAK_PARAMS)
	touch $$@

endef

TARGETS := $(static_blds)

all:	$(TARGETS)

$(TARGETS):	$(BLD)

$(BLD):
	mkdir $(BLD)

# vars first
encore.cfg_vars= true ||
esound.cfg_vars:= AUDIOFILE_CFLAGS="$(call inc_path,audiofile,libaudiofile) -laudiofile"
esound.cfg_vars+= AUDIOFILE_LIBS="$(call ld_path,audiofile,libaudiofile/.libs)"
esound.cfg_params= --enable-shared=no --with-pic
esound.mak_vars+= CFLAGS="" 
esound.ldflags=" -lm -lstdc++"
faac.cfg_params= --enable-shared=no --without-mp4v2
faad2.cfg_params= --enable-shared=no
fdk.cfg_vars= ./autogen.sh ; CFLAGS+=" -Wno-narrowing" CXXFLAGS+=" -Wno-narrowing"
fdk.cfg_params= --enable-shared=no
fdk.mak_params= ; for f in $(call bld_path,fdk,/lib*/include); do ln -s . $$$$f/fdk-aac; done
fftw.cfg_params= --disable-fortran --enable-shared=no
ffmpeg.cfg_params= \
	--enable-pthreads --enable-gpl \
	--disable-ffserver --disable-ffplay \
	--disable-vaapi \
	--enable-libfaac \
	--enable-libfdk-aac \
	--enable-libtwolame \
	--enable-libopenjpeg \
	--enable-libmp3lame \
	--enable-libvorbis \
	--enable-libtheora \
	--enable-libvpx \
	--enable-libx264 \
	--enable-libx265 \
	--enable-nonfree \
	--extra-cflags="\
		$(call inc_path,faad2,include) \
		$(call inc_path,faac,include) \
		$(call inc_path,twolame,libtwolame) \
		$(call inc_path,lame,include) \
		$(call inc_path,openjpeg,src/lib/openjp2) \
		$(call inc_path,libvorbis,include) \
		$(call inc_path,libtheora,include) \
		$(call inc_path,libvpx) \
		$(call inc_path,x264) \
		$(call inc_path,x265) \
		$(call inc_path,x265,source) \
		$(call inc_path,fdk,libAACdec) \
		$(call inc_path,fdk,libAACenc) \
		$(call inc_path,fdk,libSYS) \
		$(call inc_path,fdk,libSYS/include)" \
	--extra-cxxflags="-D__STDC_CONSTANT_MACROS" \
	--extra-libs="\
		$(call ld_path,faad2,libfaad/.libs) \
		$(call ld_path,faac,libfaac/.libs) \
		$(call ld_path,twolame,libtwolame/.libs) \
		$(call ld_path,lame,libmp3lame/.libs) \
		$(call ld_path,openjpeg,bin) \
		$(call ld_path,libvorbis,lib/.libs) \
		$(call ld_path,libtheora,lib/.libs) \
		$(call ld_path,libvpx) \
		$(call ld_path,x264) \
		$(call ld_path,x265) \
		$(call ld_path,fdk,.libs) \
		$(EXTRA_LIBS)" $(FFMPEG_EXTRA_CFG) \

cmake_config=echo "exec cmake \$$$$@ $(1)" > ./configure; chmod +x ./configure;
a52dec.mak_params?= ; cd $(call bld_path,a52dec,include); ln -sf . a52dec
a52dec.cfg_vars?= CFLAGS+=" -U__FreeBSD__ $(call inc_path,djbfft)" LIBS+=" $(call ld_path,djbfft)"
a52dec.cfg_params?=--enable-djbfft
djbfft.cfg_vars?=echo "$(call bld_path,djbfft)" > conf-home; \
 (CFLAGS="$(CFLAGS)"; $(CFG_VARS)$(if $(CFG_VARS),; )echo "$(CC) $$$$CFLAGS") > conf-cc; \
 echo > ./configure; chmod +x ./configure;
djbfft.mak_params?=; cd $(call bld_path,djbfft); ln -sf djbfft.a libdjbfft.a
audiofile.cfg_params?=--enable-shared=no
audiofile.mak_params?=LIBS="-lm -lstdc++"
flac.cfg_params?= --enable-shared=no
flac.cflags?="$(call inc_path,libogg,include) $(call ld_path,libogg,src/.libs)"
giflib.cfg_params?=--enable-shared=no
ilmbase.cfg_vars= CFLAGS+=" -Wno-narrowing" CXXFLAGS+=" -Wno-narrowing"
ilmbase.cfg_params?=--prefix=$(call bld_path,ilmbase,usr)
ilmbase.mak_params?=; $(MAKE) -C ilmbase* install; cd $(call bld_path,ilmbase); ln -sf lib64 usr/lib
lame.cfg_vars?= CFLAGS+=" -O"
lame.cfg_params?=--enable-shared=no
lame.mak_params?= ; cd $(call bld_path,lame,include); ln -sf . lame
mjpegtools.cflags?="$(call inc_path,libjpeg) $(call ld_path,libjpeg,.libs)"
mjpegtools.mak_params?=; ln -s . $(call bld_path,mjpegtools,utils)/mjpegtools 
mjpegtools.cfg_params?= --enable-shared=no
ladspa.mak_params?=; $(MAKE) -C ladspa* install DESTDIR=$(call bld_path,ladspa)
libavc1394.cfg_vars?=PKG_CONFIG_PATH=$(call bld_path,libraw1394)
libavc1394.cflags?="$(call inc_path,libraw1394)"
libavc1394.ldflags?="$(call ld_path,libraw1394,src/.libs)"
libavc1394.cfg_params?= --enable-shared=no
libavc1394.mak_params?=; cd $(call bld_path,libavc1394); ln -sf ../librom1394/rom1394.h libavc1394/.
libdv.cfg_params?= --disable-gtk --enable-shared=no
libiec61883.cfg_vars?=PKG_CONFIG_PATH=$(call bld_path,libraw1394)
libiec61883.cflags?="$(call inc_path,libraw1394)"
libiec61883.ldflags?="$(call ld_path,libraw1394,src/.libs)"
libiec61883.cfg_params?= --enable-shared=no
libiec61883.mak_params?=; cd $(call bld_path,libiec61883,src); ln -sf . libiec61883
libjpeg.cfg_params?= --enable-shared=no
libogg.cfg_params?= --enable-shared=no
libraw1394.cfg_params?=  --enable-shared=no; ln -sf src libraw1394
libtheora.cfg_vars?=PKG_CONFIG_PATH=$(call bld_path,libogg):$(call bld_path,libvorbis)
libtheora.cflags?="$(call inc_path,libogg,include) $(call inc_path,libogg,src) $(call inc_path,libvorbis,include)"
libtheora.ldflags?="$(call ld_path,libvorbis,lib/.libs) $(call ld_path,libogg,src/.libs)"
libtheora.cfg_params?= --disable-examples --enable-shared=no
libuuid.cfg_params?=--enable-shared=no
libvorbis.cfg_params?= --disable-oggtest --enable-shared=no
openjpeg.cfg_params?= -DBUILD_SHARED_LIBS:BOOL=OFF
openjpeg.cfg_params?= -DBUILD_SHARED_LIBS:BOOL=OFF
openjpeg.cfg_vars?=$(call cmake_config,.)
openjpeg.mak_params?= ; cd $(call bld_path,openjpeg,src/lib/openjp2); ln -sf . openjpeg-2.1
opencv.cfg_vars?=$(call cmake_config,.)
opencv.cfg_params?= -DBUILD_SHARED_LIBS:BOOL=OFF
openexr.cfg_vars?=LD_LIBRARY_PATH=$(call bld_path,ilmbase,usr/lib)
openexr.cfg_params?=--enable-shared=no --with-ilmbase-prefix=$(call bld_path,ilmbase,usr)
speech_tools.mak_params?=-j1
twolame.cfg_params?=--enable-shared=no
x264.cfg_params?= --enable-static --enable-pic
x265.cfg_vars?=$(call cmake_config,source)
x265.cfg_params?= -DENABLE_SHARED=no
libvpx.cfg_params?= --enable-pic

# compile flag vars
$(foreach tgt,$(TARGETS), \
	$(if $($(tgt).cflags),$(eval $(tgt).cfg_vars+=CFLAGS+=$($(tgt).cflags))))
$(foreach tgt,$(TARGETS), \
	$(if $($(tgt).cppflags),$(eval $(tgt).cfg_vars+=CPPFLAGS+=$($(tgt).cppflags))))
$(foreach tgt,$(TARGETS), \
	$(if $($(tgt).ldflags),$(eval $(tgt).cfg_vars+=LDFLAGS+=$($(tgt).ldflags))))

# build rules
.PHONY:	rules
rules:

#$(eval $(call std-build,pkg,deps...))

ifeq ($(MAKECMDGOALS),rules)
rules=$(info $(1))
else
rules=$(eval $(1))
endif

$(call rules,$(call std-build,a52dec,djbfft))
$(call rules,$(call std-build,djbfft))
$(call rules,$(call std-build,audiofile))
$(call rules,$(call std-build,encore))
$(call rules,$(call std-build,esound,audiofile))
$(call rules,$(call std-build,faac))
$(call rules,$(call std-build,faad2))
$(call rules,$(call std-build,fdk))
$(call rules,$(call std-build,ffmpeg, faad2 faac fdk twolame lame openjpeg libtheora x264 x265 libvpx))
$(call rules,$(call std-build,fftw))
$(call rules,$(call std-build,flac,libogg))
$(call rules,$(call std-build,giflib))
$(call rules,$(call std-build,ilmbase))
$(call rules,$(call std-build,ladspa))
$(call rules,$(call std-build,lame))
$(call rules,$(call std-build,libavc1394,libraw1394))
$(call rules,$(call std-build,libdv))
$(call rules,$(call std-build,libiec61883,libraw1394))
$(call rules,$(call std-build,libjpeg))
$(call rules,$(call std-build,libogg))
$(call rules,$(call std-build,libraw1394))
$(call rules,$(call std-build,libsndfile))
$(call rules,$(call std-build,libtheora, libogg libvorbis))
$(call rules,$(call std-build,libuuid))
$(call rules,$(call std-build,libvorbis))
$(call rules,$(call std-build,mjpegtools, libjpeg))
$(call rules,$(call std-build,opencv))
$(call rules,$(call std-build,openexr, ilmbase))
$(call rules,$(call std-build,openjpeg))
$(call rules,$(call std-build,speech_tools))
$(call rules,$(call std-build,tiff))
$(call rules,$(call std-build,twolame))
$(call rules,$(call std-build,x264))
$(call rules,$(call std-build,x265))
$(call rules,$(call std-build,libvpx))

# specialize festival, multiple tarballs
festival:
.PHONY: festival festival-configure festival-src
festival: $(call pkg-built,festival)
festival-configure: $(call pkg-config,festival)
festival-src: $(call pkg-source,festival)
festival-clean:
	rm -rf festival* $(BLD)/festival.*

$(call pkg-source,festival):
	for f in src/festival* src/festlex_* src/festvox_*; do tar -xJf $$f; done
	touch $@

$(call pkg-config,festival): $(call pkg-source,festival) $(call pkg-built,speech_tools)
	cd festival* && [ -f ./configure ] && \
		./configure
	touch $@

$(call pkg-built,festival): $(call pkg-config,festival)
	$(MAKE) -C festival* -j1
	touch $@

clean:
	for f in $(static_pkgs); do rm -rf $$f*; done
	rm -rf $(BLD)

install:
	cp -a $(ver_mjpegtools)/mpeg2enc/mpeg2enc $(BINDIR)/.
	cp -a $(ver_mjpegtools)/mplex/mplex $(BINDIR)/.

val-%:
	@echo $($(subst val-,,$@))