configure

    log check_host_cflags "$@"
    set -- $($host_cflags_filter "$@")
    check_host_cc "$@" <<EOF && append host_cflags "$@"
int x;
EOF
}

apply(){
    file=$1
    shift
    "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
}

cp_if_changed(){
    cmp -s "$1" "$2" && echo "$2 is unchanged" && return
    mkdir -p "$(dirname $2)"
    $cp_f "$1" "$2"
}

# CONFIG_LIST contains configurable options, while HAVE_LIST is for
# system-dependent things.

COMPONENT_LIST="
    bsfs
    decoders
    demuxers
    encoders
    filters
    hwaccels
    indevs
    muxers
    outdevs
    parsers
    protocols
"

EXTERNAL_LIBRARY_LIST="
    avisynth
    bzlib
    frei0r
    gnutls
    libcdio
    libdc1394
    libfaac
    libfdk_aac
    libfreetype
    libgsm
    libilbc
    libmp3lame
    libopencore_amrnb
    libopencore_amrwb
    libopencv
    libopenjpeg
    libopus
    libpulse
    librtmp
    libschroedinger
    libspeex
    libtheora
    libvo_aacenc
    libvo_amrwbenc
    libvorbis
    libvpx
    libwavpack
    libx264
    libxavs
    libxvid
    openssl
    x11grab
    zlib
"

HWACCEL_LIST="
    dxva2
    vaapi
    vda
    vdpau
"
LIBRARY_LIST="
    avcodec
    avdevice
    avfilter
    avformat
    avresample
    avutil
    swscale
"

PROGRAM_LIST="
    avconv
    avplay
    avprobe
    avserver
"

CONFIG_LIST="
    $COMPONENT_LIST
    $EXTERNAL_LIBRARY_LIST
    $HWACCEL_LIST
    $LIBRARY_LIST
    $PROGRAM_LIST
    dct
    doc
    error_resilience
    fft
    gpl
    gray
    hardcoded_tables
    lsp
    lzo
    mdct
    memalign_hack
    network
    nonfree
    pic
    rdft
    runtime_cpudetect
    safe_bitstream_reader
    shared
    small
    sram
    static
    swscale_alpha
    thumb
    version3
    xmm_clobber_test
"

THREADS_LIST='
    pthreads
    w32threads
'

ATOMICS_LIST='
    atomics_gcc
    atomics_suncc
    atomics_win32
'

ARCH_LIST='
    aarch64
    alpha
    arm
    avr32
    avr32_ap
    avr32_uc
    bfin
    ia64
    m68k
    mips
    mips64
    parisc
    ppc
    ppc64
    s390
    sh4
    sparc
    sparc64
    tilegx
    tilepro
    tomi
    x86
    x86_32
    x86_64
'

ARCH_EXT_LIST_ARM='
    armv5te
    armv6
    armv6t2
    neon
    vfp
    vfpv3
'

ARCH_EXT_LIST_X86='
    amd3dnow
    amd3dnowext
    avx
    fma4
    mmx
    mmxext
    sse
    sse2
    sse3
    sse4
    sse42
    ssse3
'

ARCH_EXT_LIST="
    $ARCH_EXT_LIST_ARM
    $ARCH_EXT_LIST_X86
    altivec
    ppc4xx
    vis
"

HAVE_LIST_CMDLINE='
    inline_asm
    symver
    yasm
'

HAVE_LIST_PUB='
    bigendian
    fast_unaligned
'

MATH_FUNCS="
    atanf
    atan2f
    cbrtf
    cosf
    exp2
    exp2f
    expf
    isinf
    isnan
    ldexpf
    llrint
    llrintf
    log2
    log2f
    log10f
    lrint
    lrintf
    powf
    rint
    round
    roundf
    sinf
    trunc
    truncf
"

HAVE_LIST="
    $ARCH_EXT_LIST
    $(add_suffix _external $ARCH_EXT_LIST)
    $(add_suffix _inline   $ARCH_EXT_LIST)
    $HAVE_LIST_CMDLINE
    $HAVE_LIST_PUB
    $THREADS_LIST
    $ATOMICS_LIST
    $MATH_FUNCS
    aligned_malloc
    aligned_stack
    alsa_asoundlib_h
    altivec_h
    arpa_inet_h
    asm_mod_q
    asm_mod_y
    atomic_cas_ptr
    atomics_native
    attribute_may_alias
    attribute_packed
    cdio_paranoia_h
    cdio_paranoia_paranoia_h
    closesocket
    CommandLineToArgvW
    cpunop
    CryptGenRandom
    dcbzl
    dev_bktr_ioctl_bt848_h
    dev_bktr_ioctl_meteor_h
    dev_ic_bt8xx_h
    dev_video_bktr_ioctl_bt848_h
    dev_video_meteor_ioctl_meteor_h
    direct_h
    dlfcn_h
    dlopen
    dos_paths
    dxva_h
    ebp_available
    ebx_available
    fast_64bit
    fast_clz
    fast_cmov
    fcntl
    fork
    getaddrinfo
    gethrtime
    getopt
    GetProcessAffinityMask
    GetProcessMemoryInfo
    GetProcessTimes
    GetSystemTimeAsFileTime
    getrusage
    getservbyport
    gettimeofday
    gnu_as
    gsm_h
    i686
    ibm_asm
    inet_aton
    io_h
    inline_asm_labels
    isatty
    jack_port_get_latency_range
    ldbrx
    libdc1394_1
    libdc1394_2
    local_aligned_16
    local_aligned_8
    localtime_r
    loongson
    machine_ioctl_bt848_h
    machine_ioctl_meteor_h
    machine_rw_barrier
    malloc_h
    MapViewOfFile
    memalign
    MemoryBarrier
    mkstemp
    mm_empty
    mmap
    mprotect
    msvcrt
    nanosleep
    poll_h
    posix_memalign
    pragma_deprecated
    rdtsc
    sched_getaffinity
    sdl
    SetConsoleTextAttribute
    setmode
    setrlimit
    Sleep
    sndio_h
    socklen_t
    soundcard_h
    strerror_r
    strptime
    strtok_r
    struct_addrinfo
    struct_group_source_req
    struct_ip_mreq_source
    struct_ipv6_mreq
    struct_pollfd
    struct_rusage_ru_maxrss
    struct_sockaddr_in6
    struct_sockaddr_sa_len
    struct_sockaddr_storage
    struct_v4l2_frmivalenum_discrete
    symver_asm_label
    symver_gnu_asm
    sync_val_compare_and_swap
    sysconf
    sysctl
    sys_mman_h
    sys_param_h
    sys_resource_h
    sys_select_h
    sys_soundcard_h
    sys_time_h
    sys_un_h
    sys_videoio_h
    threads
    unistd_h
    usleep
    vfp_args
    VirtualAlloc
    windows_h
    winsock2_h
    xform_asm
    xmm_clobbers
"

# options emitted with CONFIG_ prefix but not available on the command line
CONFIG_EXTRA="
    aandcttables
    ac3dsp
    audio_frame_queue
    dsputil
    gcrypt
    golomb
    gplv3
    h264chroma
    h264dsp
    h264pred
    h264qpel
    hpeldsp
    huffman
    lgplv3
    lpc
    mpegaudio
    mpegaudiodsp
    mpegvideo
    mpegvideoenc
    nettle
    rangecoder
    rtpdec
    rtpenc_chain
    sinewin
    videodsp
    vp3dsp
"

CMDLINE_SELECT="
    $ARCH_EXT_LIST
    $CONFIG_LIST
    $HAVE_LIST_CMDLINE
    $THREADS_LIST
    asm
    cross_compile
    debug
    extra_warnings
    logging
    lto
    optimizations
"

PATHS_LIST='
    bindir
    datadir
    incdir
    libdir
    mandir
    prefix
    shlibdir
'

CMDLINE_SET="
    $PATHS_LIST
    ar
    arch
    as
    build_suffix
    cc
    cpu
    cross_prefix
    dep_cc
    extra_version
    host_cc
    host_cflags
    host_ld
    host_ldflags
    host_libs
    host_os
    ld
    logfile
    malloc_prefix
    nm
    optflags
    pkg_config
    random_seed
    samples
    sysinclude
    sysroot
    target_exec
    target_os
    target_path
    target_samples
    toolchain
"

CMDLINE_APPEND="
    extra_cflags
    host_cppflags
"

# code dependency declarations

# architecture extensions

armv5te_deps="arm"
armv6_deps="arm"
armv6t2_deps="arm"
neon_deps="arm"
vfp_deps="arm"
vfpv3_deps="vfp"

map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM

altivec_deps="ppc"
ppc4xx_deps="ppc"

vis_deps="sparc"

x86_64_suggest="fast_cmov i686"

amd3dnow_deps="mmx"
amd3dnowext_deps="amd3dnow"
mmx_deps="x86"
mmxext_deps="mmx"
sse_deps="mmxext"
sse2_deps="sse"
sse3_deps="sse2"
ssse3_deps="sse3"
sse4_deps="ssse3"
sse42_deps="sse4"
avx_deps="sse42"
fma4_deps="avx"

mmx_external_deps="yasm"
mmx_inline_deps="inline_asm"
mmx_suggest="mmx_external mmx_inline"

for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
    eval dep=\$${ext}_deps
    eval ${ext}_external_deps='"${dep}_external"'
    eval ${ext}_inline_deps='"${dep}_inline"'
    eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
done

aligned_stack_if_any="ppc x86"
fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
fast_clz_if_any="alpha avr32 mips ppc x86"
fast_unaligned_if_any="ppc x86"

inline_asm_deps="!tms470"
need_memalign="altivec neon sse"

symver_if_any="symver_asm_label symver_gnu_asm"

log2_deps="!msvcrt"

# subsystems
dct_select="rdft"
error_resilience_select="dsputil"
lpc_select="dsputil"
mdct_select="fft"
rdft_select="fft"
mpegaudio_select="mpegaudiodsp"
mpegaudiodsp_select="dct"
mpegvideo_select="dsputil hpeldsp videodsp"
mpegvideoenc_select="mpegvideo"

# decoders / encoders
aac_decoder_select="mdct sinewin"
aac_encoder_select="audio_frame_queue mdct sinewin"
aac_latm_decoder_select="aac_decoder aac_latm_parser"
ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
ac3_encoder_select="mdct ac3dsp dsputil"
ac3_fixed_encoder_select="mdct ac3dsp dsputil"
aic_decoder_select="dsputil golomb"
alac_encoder_select="lpc"
als_decoder_select="dsputil"
amrnb_decoder_select="lsp"
amrwb_decoder_select="lsp"
amv_decoder_select="dsputil hpeldsp"
ape_decoder_select="dsputil"
asv1_decoder_select="dsputil"
asv1_encoder_select="dsputil"
asv2_decoder_select="dsputil"
asv2_encoder_select="dsputil"
atrac1_decoder_select="mdct sinewin"
atrac3_decoder_select="mdct"
bink_decoder_select="dsputil hpeldsp"
binkaudio_dct_decoder_select="mdct rdft dct sinewin"
binkaudio_rdft_decoder_select="mdct rdft sinewin"
cavs_decoder_select="dsputil golomb h264chroma videodsp"
cllc_decoder_select="dsputil"
comfortnoise_encoder_select="lpc"
cook_decoder_select="dsputil mdct sinewin"
cscd_decoder_select="lzo"
cscd_decoder_suggest="zlib"
dca_decoder_select="mdct"
dnxhd_decoder_select="dsputil"
dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
dvvideo_decoder_select="dsputil"
dvvideo_encoder_select="dsputil"
dxa_decoder_select="zlib"
eac3_decoder_select="ac3_decoder"
eac3_encoder_select="ac3_encoder"
eamad_decoder_select="aandcttables dsputil mpegvideo"
eatgq_decoder_select="aandcttables dsputil"
eatqi_decoder_select="aandcttables error_resilience mpegvideo"
ffv1_decoder_select="dsputil golomb rangecoder"
ffv1_encoder_select="dsputil rangecoder"
ffvhuff_decoder_select="dsputil"
ffvhuff_encoder_select="dsputil huffman"
flac_decoder_select="golomb"
flac_encoder_select="dsputil golomb lpc"
flashsv_decoder_select="zlib"
flashsv_encoder_select="zlib"
flashsv2_decoder_select="zlib"
flv_decoder_select="h263_decoder"
flv_encoder_select="h263_encoder"
fourxm_decoder_select="dsputil"
fraps_decoder_select="dsputil huffman"
g2m_decoder_select="dsputil zlib"
h261_decoder_select="error_resilience mpegvideo"
h261_encoder_select="aandcttables mpegvideoenc"
h263_decoder_select="error_resilience h263_parser mpegvideo"
h263_encoder_select="aandcttables mpegvideoenc"
h263i_decoder_select="h263_decoder"
h263p_encoder_select="h263_encoder"
h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
h264_decoder_suggest="error_resilience"
huffyuv_decoder_select="dsputil"
huffyuv_encoder_select="dsputil huffman"
iac_decoder_select="dsputil fft mdct sinewin"
imc_decoder_select="dsputil fft mdct sinewin"
indeo3_decoder_select="hpeldsp"
interplay_video_decoder_select="hpeldsp"
jpegls_decoder_select="dsputil golomb hpeldsp"
jpegls_encoder_select="golomb"
jv_decoder_select="dsputil"
lagarith_decoder_select="dsputil"
ljpeg_encoder_select="aandcttables mpegvideoenc"
loco_decoder_select="golomb"
mdec_decoder_select="dsputil error_resilience mpegvideo"
mimic_decoder_select="dsputil hpeldsp"
mjpeg_decoder_select="dsputil hpeldsp"
mjpegb_decoder_select="dsputil hpeldsp"
mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
mlp_decoder_select="dsputil mlp_parser"
motionpixels_decoder_select="dsputil"
mp1_decoder_select="mpegaudio"
mp1float_decoder_select="mpegaudio"
mp2_decoder_select="mpegaudio"
mp2float_decoder_select="mpegaudio"
mp3_decoder_select="mpegaudio"
mp3adu_decoder_select="mpegaudio"
mp3adufloat_decoder_select="mpegaudio"
mp3float_decoder_select="mpegaudio"
mp3on4_decoder_select="mpegaudio"
mp3on4float_decoder_select="mpegaudio"
mpc7_decoder_select="dsputil mpegaudiodsp"
mpc8_decoder_select="dsputil mpegaudiodsp"
mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
mpeg_xvmc_decoder_select="mpeg2video_decoder"
mpeg1video_decoder_select="error_resilience mpegvideo"
mpeg1video_encoder_select="aandcttables mpegvideoenc"
mpeg2video_decoder_select="error_resilience mpegvideo"
mpeg2video_encoder_select="aandcttables mpegvideoenc"
mpeg4_decoder_select="h263_decoder mpeg4video_parser"
mpeg4_encoder_select="h263_encoder"
msmpeg4v1_decoder_select="h263_decoder"
msmpeg4v2_decoder_select="h263_decoder"
msmpeg4v2_encoder_select="h263_encoder"
msmpeg4v3_decoder_select="h263_decoder"
msmpeg4v3_encoder_select="h263_encoder"
mss2_decoder_select="error_resilience vc1_decoder"
mxpeg_decoder_select="dsputil hpeldsp"
nellymoser_decoder_select="mdct sinewin"
nellymoser_encoder_select="audio_frame_queue mdct sinewin"
nuv_decoder_select="dsputil lzo"
png_decoder_select="dsputil zlib"
png_encoder_select="dsputil zlib"
prores_decoder_select="dsputil"
prores_encoder_select="dsputil"
qcelp_decoder_select="lsp"
qdm2_decoder_select="mdct rdft mpegaudiodsp"
ra_144_encoder_select="audio_frame_queue lpc"
ralf_decoder_select="golomb"
rv10_decoder_select="error_resilience h263_decoder"
rv10_encoder_select="h263_encoder"
rv20_decoder_select="error_resilience h263_decoder"
rv20_encoder_select="h263_encoder"
rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
shorten_decoder_select="golomb"
sipr_decoder_select="lsp"
sp5x_decoder_select="dsputil hpeldsp"
svq1_decoder_select="hpeldsp"
svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
svq3_decoder_suggest="error_resilience zlib"
tak_decoder_select="dsputil"
theora_decoder_select="vp3_decoder"
tiff_decoder_suggest="zlib"
tiff_encoder_suggest="zlib"
thp_decoder_select="dsputil hpeldsp"
truehd_decoder_select="mlp_decoder"
truemotion2_decoder_select="dsputil"
truespeech_decoder_select="dsputil"
tscc_decoder_select="zlib"
twinvq_decoder_select="mdct lsp sinewin"
utvideo_decoder_select="dsputil"
utvideo_encoder_select="dsputil huffman"
vble_decoder_select="dsputil"
vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
vc1image_decoder_select="vc1_decoder"
vorbis_decoder_select="mdct"
vorbis_encoder_select="mdct"
vp3_decoder_select="hpeldsp vp3dsp videodsp"
vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
vp6a_decoder_select="vp6_decoder"
vp6f_decoder_select="vp6_decoder"
vp8_decoder_select="h264pred videodsp"
wmapro_decoder_select="mdct sinewin"
wmav1_decoder_select="mdct sinewin"
wmav1_encoder_select="mdct sinewin"
wmav2_decoder_select="mdct sinewin"
wmav2_encoder_select="mdct sinewin"
wmavoice_decoder_select="lsp rdft dct mdct sinewin"
wmv1_decoder_select="h263_decoder"
wmv1_encoder_select="h263_encoder"
wmv2_decoder_select="h263_decoder videodsp"
wmv2_encoder_select="h263_encoder"
wmv3_decoder_select="vc1_decoder"
wmv3image_decoder_select="wmv3_decoder"
zerocodec_decoder_select="zlib"
zlib_decoder_select="zlib"
zlib_encoder_select="zlib"
zmbv_decoder_select="zlib"
zmbv_encoder_select="zlib"

# hardware accelerators
dxva2_deps="dxva2api_h"
vaapi_deps="va_va_h"
vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"

h263_vaapi_hwaccel_deps="vaapi"
h263_vaapi_hwaccel_select="h263_decoder"
h263_vdpau_hwaccel_deps="vdpau"
h263_vdpau_hwaccel_select="h263_decoder"
h264_dxva2_hwaccel_deps="dxva2"
h264_dxva2_hwaccel_select="h264_decoder"
h264_vaapi_hwaccel_deps="vaapi"
h264_vaapi_hwaccel_select="h264_decoder"
h264_vda_hwaccel_deps="vda"
h264_vda_hwaccel_select="h264_decoder"
h264_vdpau_hwaccel_deps="vdpau"
h264_vdpau_hwaccel_select="h264_decoder"
mpeg1_vdpau_hwaccel_deps="vdpau"
mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
mpeg2_dxva2_hwaccel_deps="dxva2"
mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
mpeg2_vaapi_hwaccel_deps="vaapi"
mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
mpeg2_vdpau_hwaccel_deps="vdpau"
mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
mpeg4_vaapi_hwaccel_deps="vaapi"
mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
mpeg4_vdpau_hwaccel_deps="vdpau"
mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
vc1_dxva2_hwaccel_deps="dxva2"
vc1_dxva2_hwaccel_select="vc1_decoder"
vc1_vaapi_hwaccel_deps="vaapi"
vc1_vaapi_hwaccel_select="vc1_decoder"
vc1_vdpau_hwaccel_deps="vdpau"
vc1_vdpau_hwaccel_select="vc1_decoder"
wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"

# parsers
h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
mpeg4video_parser_select="error_resilience mpegvideo"
mpegvideo_parser_select="error_resilience mpegvideo"
vc1_parser_select="mpegvideo"

# external libraries
libfaac_encoder_deps="libfaac"
libfaac_encoder_select="audio_frame_queue"
libfdk_aac_encoder_deps="libfdk_aac"
libfdk_aac_encoder_select="audio_frame_queue"
libgsm_decoder_deps="libgsm"
libgsm_encoder_deps="libgsm"
libgsm_ms_decoder_deps="libgsm"
libgsm_ms_encoder_deps="libgsm"
libilbc_decoder_deps="libilbc"
libilbc_encoder_deps="libilbc"
libmp3lame_encoder_deps="libmp3lame"
libmp3lame_encoder_select="audio_frame_queue"
libopencore_amrnb_decoder_deps="libopencore_amrnb"
libopencore_amrnb_encoder_deps="libopencore_amrnb"
libopencore_amrnb_encoder_select="audio_frame_queue"
libopencore_amrwb_decoder_deps="libopencore_amrwb"
libopenjpeg_decoder_deps="libopenjpeg"
libopenjpeg_encoder_deps="libopenjpeg"
libopus_decoder_deps="libopus"
libopus_encoder_deps="libopus"
libopus_encoder_select="audio_frame_queue"
libschroedinger_decoder_deps="libschroedinger"
libschroedinger_encoder_deps="libschroedinger"
libspeex_decoder_deps="libspeex"
libspeex_encoder_deps="libspeex"
libspeex_encoder_select="audio_frame_queue"
libtheora_encoder_deps="libtheora"
libvo_aacenc_encoder_deps="libvo_aacenc"
libvo_aacenc_encoder_select="audio_frame_queue"
libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
libvorbis_encoder_deps="libvorbis"
libvorbis_encoder_select="audio_frame_queue"
libvpx_vp8_decoder_deps="libvpx"
libvpx_vp8_encoder_deps="libvpx"
libvpx_vp9_decoder_deps="libvpx"
libvpx_vp9_encoder_deps="libvpx"
libwavpack_encoder_deps="libwavpack"
libx264_encoder_deps="libx264"
libxavs_encoder_deps="libxavs"
libxvid_encoder_deps="libxvid"

# demuxers / muxers
ac3_demuxer_select="ac3_parser"
asf_stream_muxer_select="asf_muxer"
avisynth_demuxer_deps="avisynth"
dirac_demuxer_select="dirac_parser"
eac3_demuxer_select="ac3_parser"
flac_demuxer_select="flac_parser"
ipod_muxer_select="mov_muxer"
ismv_muxer_select="mov_muxer"
matroska_audio_muxer_select="matroska_muxer"
matroska_demuxer_suggest="bzlib lzo zlib"
mov_demuxer_suggest="zlib"
mov_muxer_select="rtpenc_chain"
mp3_demuxer_select="mpegaudio_parser"
mp4_muxer_select="mov_muxer"
mpegts_muxer_select="adts_muxer latm_muxer"
mpegtsraw_demuxer_select="mpegts_demuxer"
mxf_d10_muxer_select="mxf_muxer"
ogg_demuxer_select="golomb"
psp_muxer_select="mov_muxer"
rtp_demuxer_select="sdp_demuxer"
rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
rtsp_demuxer_select="http_protocol rtpdec"
rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
sap_demuxer_select="sdp_demuxer"
sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
sdp_demuxer_select="rtpdec"
smoothstreaming_muxer_select="ismv_muxer"
spdif_muxer_select="aac_parser"
tak_demuxer_select="tak_parser"
tg2_muxer_select="mov_muxer"
tgp_muxer_select="mov_muxer"
w64_demuxer_deps="wav_demuxer"

# indevs / outdevs
alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
alsa_outdev_deps="alsa_asoundlib_h"
bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
dv1394_indev_deps="dv1394 dv_demuxer"
fbdev_indev_deps="linux_fb_h"
jack_indev_deps="jack_jack_h pthreads"
libcdio_indev_deps="libcdio"
libdc1394_indev_deps="libdc1394"
oss_indev_deps_any="soundcard_h sys_soundcard_h"
oss_outdev_deps_any="soundcard_h sys_soundcard_h"
pulse_indev_deps="libpulse"
sndio_indev_deps="sndio_h"
sndio_outdev_deps="sndio_h"
v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
vfwcap_indev_extralibs="-lavicap32"
x11grab_indev_deps="x11grab XShmCreateImage"

# protocols
ffrtmpcrypt_protocol_deps="!librtmp_protocol"
ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
ffrtmpcrypt_protocol_select="tcp_protocol"
ffrtmphttp_protocol_deps="!librtmp_protocol"
ffrtmphttp_protocol_select="http_protocol"
gopher_protocol_select="network"
httpproxy_protocol_select="tcp_protocol"
http_protocol_select="tcp_protocol"
https_protocol_select="tls_protocol"
librtmp_protocol_deps="librtmp"
librtmpe_protocol_deps="librtmp"
librtmps_protocol_deps="librtmp"
librtmpt_protocol_deps="librtmp"
librtmpte_protocol_deps="librtmp"
mmsh_protocol_select="http_protocol"
mmst_protocol_select="network"
rtmp_protocol_deps="!librtmp_protocol"
rtmp_protocol_select="tcp_protocol"
rtmpe_protocol_select="ffrtmpcrypt_protocol"
rtmps_protocol_deps="!librtmp_protocol"
rtmps_protocol_select="tls_protocol"
rtmpt_protocol_select="ffrtmphttp_protocol"
rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
rtp_protocol_select="udp_protocol"
sctp_protocol_deps="struct_sctp_event_subscribe"
sctp_protocol_select="network"
srtp_protocol_select="rtp_protocol"
tcp_protocol_select="network"
tls_protocol_deps_any="openssl gnutls"
tls_protocol_select="tcp_protocol"
udp_protocol_select="network"
unix_protocol_deps="sys_un_h"
unix_protocol_select="network"

# filters
blackframe_filter_deps="gpl"
boxblur_filter_deps="gpl"
cropdetect_filter_deps="gpl"
delogo_filter_deps="gpl"
drawtext_filter_deps="libfreetype"
frei0r_filter_deps="frei0r dlopen strtok_r"
frei0r_filter_extralibs='$ldl'
frei0r_src_filter_deps="frei0r dlopen strtok_r"
frei0r_src_filter_extralibs='$ldl'
hqdn3d_filter_deps="gpl"
interlace_filter_deps="gpl"
resample_filter_deps="avresample"
ocv_filter_deps="libopencv"
scale_filter_deps="swscale"
yadif_filter_deps="gpl"

# libraries
avcodec_deps="avutil"
avdevice_deps="avutil avcodec avformat"
avfilter_deps="avutil"
avformat_deps="avutil avcodec"
avresample_deps="avutil"
swscale_deps="avutil"

# programs
avconv_deps="avcodec avfilter avformat avresample swscale"
avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
               fps_filter null_filter resample_filter scale_filter
               setpts_filter trim_filter"
avplay_deps="avcodec avformat avresample swscale sdl"
avplay_select="rdft"
avprobe_deps="avcodec avformat"
avserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer !shared"
avserver_extralibs='$ldl'

doc_deps="texi2html"

# default parameters

logfile="config.log"

# installation paths
prefix_default="/usr/local"
bindir_default='${prefix}/bin'
datadir_default='${prefix}/share/avconv'
incdir_default='${prefix}/include'
libdir_default='${prefix}/lib'
mandir_default='${prefix}/share/man'
shlibdir_default="$libdir_default"

# toolchain
ar_default="ar"
cc_default="gcc"
host_cc_default="gcc"
cp_f="cp -f"
ln_s="ln -s -f"
nm_default="nm -g"
objformat="elf"
pkg_config_default=pkg-config
ranlib="ranlib"
yasmexe="yasm"

nogas=":"

# machine
arch_default=$(uname -m)
cpu="generic"

# OS
target_os_default=$(tolower $(uname -s))
host_os=$target_os_default

# configurable options
enable $LIBRARY_LIST $PROGRAM_LIST

enable asm
enable debug
enable doc
enable optimizations
enable safe_bitstream_reader
enable static
enable swscale_alpha

# By default, enable only those hwaccels that have no external dependencies.
enable dxva2 vdpau

# build settings
SHFLAGS='-shared -Wl,-soname,$$(@F)'
LIBPREF="lib"
LIBSUF=".a"
FULLNAME='$(NAME)$(BUILDSUF)'
LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
SLIBPREF="lib"
SLIBSUF=".so"
SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'

asflags_filter=echo
cflags_filter=echo
ldflags_filter=echo

AS_C='-c'
AS_O='-o $@'
CC_C='-c'
CC_E='-E -o $@'
CC_O='-o $@'
LD_O='-o $@'
LD_LIB='-l%'
LD_PATH='-L'
HOSTCC_C='-c'
HOSTCC_O='-o $@'
HOSTLD_O='-o $@'

host_cflags='-O3 -g'
host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'