#!/bin/bash

if [ -x "`which gmake`" ]; then
  MAKE=gmake
else
  MAKE=make
fi

for v in OBJDIR CPATH EXTRA_LIBS HAVE_LADSPA \
    HAVE_ALSA HAVE_DVB HAVE_ESOUND HAVE_FIREWIRE HAVE_DV \
    HAVE_OSS HAVE_XFT HAVE_VIDEO4LINUX HAVE_VIDEO4LINUX2 ; do
  eval export "$v=\"`$MAKE -s val-$v`\""
done

if [ "$1" = "static" ]; then
  STATIC_LIBRARIES="y"
elif [ "$1" = "shared" ]; then
  STATIC_LIBRARIES="n"
elif [ "$1" = "cv" ]; then
  STATIC_LIBRARIES="n"
  libs="libogg libtheora libvorbis openexr libdv libjpeg tiff x264 mjpegtools a52dec lame libsndfile faac faad2"
  forced_libs="mjpegtools x264"
else
  echo "usage: $0 <static | shared | cv>"
  exit 1
fi

#thirdparty libraries

echo "configuring thirdparty library build"
echo ""
echo "required libraries:"

append() {
  var=$1
  shift
  eval "$var+=\" $*\""
}

is_in() {
  value=$1
  shift
  for var in $*; do
    [ $var = $value ] && return 0
  done
  return 1
}

add_library() {
  local lib=$1
  shift 1
  append LIBS $lib
  sta_lib=sta_$lib
  append $sta_lib $@
}

inc_a52dec="include"
add_library a52dec \
	liba52/.libs/liba52.a
inc_audiofile="libaudiofile"
add_library audiofile \
	libaudiofile/.libs/libaudiofile.a \
	libaudiofile/modules/.libs/libmodules.a \
	libaudiofile/alac/.libs/libalac.a
inc_encore="."
add_library encore \
	$OBJDIR/libencore.a
if [ "$HAVE_ESOUND" = "y" ]; then
inc_esound="."
add_library esound \
	.libs/libesd.a \
	.libs/libesddsp.a
fi
inc_faac="include"
add_library faac \
	libfaac/.libs/libfaac.a \
	common/mp4v2/libmp4v2.a
inc_faad2="include"
add_library faad2 \
	libfaad/.libs/libfaad.a \
	common/mp4ff/libmp4ff.a
# fdk replaces faac/faad2, but is experimental...
inc_fdk="libAACdec/include libAACenc/include libSYS/include"
add_library fdk \
	.libs/libfdk-aac.a
inc_festival="src"
add_library festival \
	src/lib/libFestival.a
inc_ffmpeg="."
add_library ffmpeg \
	libavutil/libavutil.a \
	libavcodec/libavcodec.a \
	libpostproc/libpostproc.a \
	libavdevice/libavdevice.a \
	libavformat/libavformat.a \
	libswscale/libswscale.a \
	libavfilter/libavfilter.a \
	libswresample/libswresample.a
inc_fftw="api"
add_library fftw \
	.libs/libfftw3.a \
	libbench2/libbench2.a \
	rdft/scalar/r2cb/.libs/librdft_scalar_r2cb.a \
	rdft/scalar/r2r/.libs/librdft_scalar_r2r.a \
	rdft/scalar/.libs/librdft_scalar.a \
	rdft/scalar/r2cf/.libs/librdft_scalar_r2cf.a \
	rdft/.libs/librdft.a \
	api/.libs/libapi.a \
	reodft/.libs/libreodft.a \
	dft/scalar/codelets/.libs/libdft_scalar_codelets.a \
	dft/scalar/.libs/libdft_scalar.a \
	dft/.libs/libdft.a \
	kernel/.libs/libkernel.a \
	simd-support/.libs/libsimd_support.a \
	simd-support/.libs/libsimd_sse2_nonportable.a
inc_flac="include"
add_library flac \
	src/libFLAC/.libs/libFLAC.a \
	src/libFLAC++/.libs/libFLAC++.a \
	src/share/utf8/.libs/libutf8.a \
	src/share/replaygain_analysis/.libs/libreplaygain_analysis.a \
	src/share/replaygain_synthesis/.libs/libreplaygain_synthesis.a \
	src/share/grabbag/.libs/libgrabbag.a \
	src/test_libs_common/.libs/libtest_libs_common.a
inc_giflib="lib"
add_library giflib \
	lib/.libs/libgif.a \
	util/libgetarg.a
inc_ilmbase="Iex Half Imath config IlmThread"
add_library ilmbase \
	Iex/.libs/libIex.a \
	IexMath/.libs/libIexMath.a \
	Half/.libs/libHalf.a \
	Imath/.libs/libImath.a \
	IlmThread/.libs/libIlmThread.a
if [ "$HAVE_LADSPA" = "y" ]; then
inc_ladspa=""
add_library ladspa
fi
inc_lame="include"
add_library lame \
	libmp3lame/.libs/libmp3lame.a \
	mpglib/.libs/libmpgdecoder.a
if [ "$HAVE_FIREWIRE" = "y" ]; then
inc_libavc1394="."
add_library libavc1394 \
	libavc1394/.libs/libavc1394.a \
	librom1394/.libs/librom1394.a \
	common/.libs/libraw1394util.a
inc_libraw1394="."
add_library libraw1394 \
	src/.libs/libraw1394.a
inc_libiec61883="src"
add_library libiec61883 \
	src/.libs/libiec61883.a
fi
if [ "$HAVE_DV" = "y" ]; then
inc_libdv="."
add_library libdv \
	libdv/.libs/libdv.a
fi
inc_libjpeg="."
add_library libjpeg \
	.libs/libjpeg.a \
	.libs/libturbojpeg.a \
	simd/.libs/libsimd.a
inc_openjpeg="src/lib/openjp2"
add_library openjpeg \
	bin/libopenjp2.a
inc_libogg="include"
add_library libogg \
	src/.libs/libogg.a
inc_libsndfile="."
add_library libsndfile \
	src/.libs/libsndfile.a \
	src/.libs/libcommon.a \
	src/G72x/.libs/libg72x.a \
	src/GSM610/.libs/libgsm.a
inc_libtheora="."
add_library libtheora \
	lib/.libs/libtheora.a \
	lib/.libs/libtheoradec.a \
	lib/.libs/libtheoraenc.a
inc_libuuid="."
add_library libuuid \
	.libs/libuuid.a
inc_libvorbis="include ."
add_library libvorbis \
	lib/.libs/libvorbis.a \
	lib/.libs/libvorbisenc.a \
	lib/.libs/libvorbisfile.a
inc_mjpegtools=". lavtools utils"
add_library mjpegtools \
	utils/mmxsse/.libs/libmmxsse.a \
	utils/.libs/libmjpegutils.a \
	lavtools/.libs/liblavfile.a \
	lavtools/.libs/liblavjpeg.a \
	yuvfilters/.libs/libyuvfilters.a \
	mpeg2enc/.libs/libmpeg2encpp.a \
	mplex/.libs/libmplex2.a
inc_openexr="IlmImf config"
add_library openexr \
	IlmImf/.libs/libIlmImf.a \
	IlmImfUtil/.libs/libIlmImfUtil.a
inc_speech_tools="."
add_library speech_tools \
	lib/libestools.a \
	lib/libeststring.a \
	lib/libestbase.a
inc_tiff="."
add_library tiff \
	libtiff/.libs/libtiff.a \
	libtiff/.libs/libtiffxx.a \
	port/.libs/libport.a
inc_twolame="libtwolame"
add_library twolame \
	libtwolame/.libs/libtwolame.a
inc_x264="."
add_library x264 \
	libx264.a
inc_x265=". source"
add_library x265 \
	libx265.a
inc_libvpx="."
add_library libvpx \
	libvpx.a \

echo ""
if [ -n "$libs" ]; then
  LIBS="$libs"
fi

n=0
for lib in $LIBS; do
  echo -n " $lib"
  if [ $(((n+=1) % 8)) = 0 ]; then echo ""; fi
done
if [ $((n % 8)) != 0 ]; then echo ""; fi
echo ""

# dynamic library paths
probe() {
  if ! `echo $LIBS | grep -qw $1`; then return 0; fi
  local name="$1"
  if [ -n "${!name}" ]; then return 0; fi
  local headers="$2"
  local func="$3"
  shift 3

  : ${TMPDIR:=$TEMPDIR}
  : ${TMPDIR:=$TMP}
  : ${TMPDIR:=/tmp}

  local exe=$(mktemp -u "${TMPDIR}/cine-${name}.XXXXXXXX")
  trap "rm -f -- ${exe}" EXIT

  {
    for hdr in $headers; do
      test "${hdr%.h}" = "${hdr}" &&
        echo "#include $hdr"    ||
        echo "#include <$hdr>"
    done
    for func in $func; do
      echo "long check_$func(void) { return (long) $func; }"
    done
    echo "int main(void) { return 0; }"
  } | cc -x c - -o $exe $@ $EXTRA_LIBS >& /dev/null
  ret=$?
  rm -f "${exe}"
  if [ $ret = 0 ]; then
    eval $name=\"shared $*\"
    echo "exists shared $name"
    return 0
  fi
  local sta_libs=sta_$name
  eval $name=\"static ${!sta_libs}\"
  echo "build  static $name"
  return 1
}

# test for shared libs/header files
probe a52dec "a52.h" a52_init -la52
probe audiofile "audiofile.h" afOpenFile -laudiofile
probe faac "stdint.h faac.h" faacEncGetVersion -lfaac
probe faad2 "faad.h" NeAACDecInit -lfaad
# dont build festival in shared build
if [ "$STATIC_LIBRARIES" = "n" ]; then festival="shared"; fi
if [ "$STATIC_LIBRARIES" = "n" ]; then speech_tools="shared"; fi
probe fftw "fftw3.h" fftw_execute -lfftw3
probe flac "FLAC/stream_decoder.h" FLAC__stream_decoder_new -lFLAC
probe lame "lame/lame.h" hip_decode_init -lmp3lame
probe libavc1394 "libavc1394/avc1394.h librom1394/rom1394.h" avc1394_init_target -lavc1394
probe libdv "libdv/dv.h" dv_init -ldv
probe libiec61883 "libiec61883/iec61883.h" iec61883_mpeg2_recv_init -liec61883
probe libjpeg "stdio.h unistd.h jpeglib.h" jpeg_start_decompress -ljpeg
probe libogg "ogg/ogg.h" ogg_stream_init -logg
probe openjpeg "openjpeg.h" opj_version -lopenjp2 -DOPJ_STATIC || \
probe openjpeg "openjpeg-1.5/openjpeg.h" opj_version -lopenjpeg -DOPJ_STATIC || \
probe openjpeg "openjpeg.h" opj_version -lopenjpeg -DOPJ_STATIC
probe libraw1394 "libraw1394/raw1394.h" raw1394_iso_recv_init -lraw1394
probe libsndfile "sndfile.h" sf_open -lsndfile
probe ilmbase "OpenEXR/ImfCRgbaFile.h" ImfOpenInputFile -lIlmImf -lIlmThread -lIex
probe openexr "OpenEXR/ImfCRgbaFile.h" ImfOpenInputFile -lIlmImf -lIlmThread -lIex
probe libtheora "theora/theoraenc.h" th_info_init -ltheora -ltheoraenc -ltheoradec -logg
probe libvorbis "vorbis/vorbisenc.h" vorbis_info_init -lvorbisenc -lvorbis -lvorbisfile -logg
probe libvpx "vpx/vpx_decoder.h" vpx_codec_decode -lvpx
probe tiff "tiff.h tiffio.h" TIFFOpen -ltiff
probe twolame "twolame.h" twolame_encode_buffer_float32_interleaved -ltwolame
probe x264 "stdint.h x264.h" x264_encoder_encode -lx264
probe x265 "x265.h" x265_encoder_encode -lx265

forced_libs="$forced_libs a52dec encore ffmpeg giflib libuuid openjpeg"

# for ffmpeg link/broken disto libs
for name in $LIBS; do
  if is_in $name $forced_libs; then
    set - ${!name}
    typ="$1"
    shift 1
    if [ "$typ" = "shared" ]; then
      echo "warn: $name forced static"
      sta_libs=sta_$name
      eval $name=\"static ${!sta_libs}\"
    fi
  fi
done

# add dependencies (order matters)
for dep in \
	ffmpeg/faac ffmpeg/faad2 ffmpeg/twolame ffmpeg/lame ffmpeg/openjpeg \
	ffmpeg/libvorbis ffmpeg/libtheora ffmpeg/x264 ffmpeg/fdk \
	libiec61883/libraw1394 libavc1394/librom1394 \
	openexr/ilmbase ilmbase/libogg \
	libtheora/libogg libtheora/libvorbis ; do
  lib="${dep%%/*}"
  needs="${dep##*/}"
  if is_in $lib $shared; then
    if is_in $needs $shared; then continue; fi
    if is_in $needs $static; then
      echo warn: shared $lib using static $needs
      continue
    fi
    append shared $needs
  fi
  if is_in $lib $static; then
    if is_in $needs $static; then continue; fi
    if is_in $needs $shared; then
      echo warn: static $lib using shared $needs
      continue
    fi
    append static $needs
  fi
done

echo ""
# check for static libs which may conflicting header files
if [ "$STATIC_LIBRARIES" = "y" ]; then
  for name in $LIBS; do
    set - ${!name}
    typ="$1"
    shift 1
    if [ "$typ" = "shared" ]; then
      echo "warn: $name is shared and static"
    fi
    sta_libs=sta_$name
    eval $name=\"static ${!sta_libs}\"
  done
fi

# any unknowns are static
for name in $LIBS; do
  if [ -z "${!name}" ]; then
    sta_libs=sta_$name
    eval $name=\"static ${!sta_libs}\"
  fi
done

# dont build festival
festival="shared"
speech_tools="shared"

shared=""
static=""
for lib in $LIBS; do
  set - ${!lib}
  typ="$1"
  append $typ $lib
done

echo "thirdparty :=$LIBS"    > config.mak
echo "shared_libs :=$shared" >> config.mak
echo "static_libs :=$static" >> config.mak

for lib in $LIBS; do
  echo "$lib := ${!lib}"
  inc_lib=inc_$lib
  echo "inc_$lib := ${!inc_lib}"
done >> config.mak

echo >> config.mak '
# translate config.mak into libs/incs

pkg_path=$(lastword $(wildcard $(THIRDPARTY)/$(1)*))
lib_static=$(call pkg_path,$(1))/$(2)
lib_shared=$(2)
inc_static=-I$(1)/$(2)
inc_shared=
lib_typ=$(firstword $(1))
lib_refs=$(wordlist 2,$(words $(1)),$(1))

$(foreach lib,$(thirdparty), \
  $(eval pkg_$(lib) := $(call pkg_path,$(lib))) \
  $(eval typ_$(lib) := $(call lib_typ,$($(lib)))) \
  $(eval lib_$(lib) := \
    $(foreach ref, $(call lib_refs,$($(lib))), \
       $(call lib_$(typ_$(lib)),$(lib),$(ref)))) \
  $(eval inc_$(lib) := \
    $(foreach inc, $(inc_$(lib)), \
       $(call inc_$(typ_$(lib)),$(pkg_$(lib)),$(inc)))))

#list libs/incs
ifeq ($(MAKECMDGOALS),list)
$(foreach lib,$(thirdparty),$(info $(lib) := $(typ_$(lib)) $(pkg_$(lib))) \
   $(foreach ref,$(lib_$(lib)), $(info == $(ref))) \
   $(foreach ref,$(inc_$(lib)), $(info -- $(ref))))
.PHONY:	list
list:

endif

static_includes := $(foreach lib,$(static_libs), $(inc_$(lib)))
static_libraries := $(foreach lib,$(static_libs),$(lib_$(lib)))
shared_libraries := $(foreach lib,$(shared_libs),$(lib_$(lib)))
thirdparty_libraries := $(static_libraries) $(shared_libraries)
'