PeerStreamer

#!/bin/sh

#

# FFmpeg configure script

#

# Copyright (c) 2000-2002 Fabrice Bellard

# Copyright (c) 2005-2008 Diego Biurrun

# Copyright (c) 2005-2008 Mans Rullgard

#

# Prevent locale nonsense from breaking basic text processing.

LC_ALL=C

export LC_ALL

# make sure we are running under a compatible shell

# try to make this part work with most shells

try_exec(){

    echo "Trying shell $1"

    type "$1" > /dev/null 2>&1 && exec "$@"

}

unset foo

(: ${foo%%bar}) 2> /dev/null

E1="$?"

(: ${foo?}) 2> /dev/null

E2="$?"

if test "$E1" != 0 || test "$E2" = 0; then

    echo "Broken shell detected.  Trying alternatives."

    export FF_CONF_EXEC

    if test "0$FF_CONF_EXEC" -lt 1; then

        FF_CONF_EXEC=1

        try_exec bash "$0" "$@"

    fi

    if test "0$FF_CONF_EXEC" -lt 2; then

        FF_CONF_EXEC=2

        try_exec ksh "$0" "$@"

    fi

    if test "0$FF_CONF_EXEC" -lt 3; then

        FF_CONF_EXEC=3

        try_exec /usr/xpg4/bin/sh "$0" "$@"

    fi

    echo "No compatible shell script interpreter found."

    echo "This configure script requires a POSIX-compatible shell"

    echo "such as bash or ksh."

    echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."

    echo "Instead, install a working POSIX-compatible shell."

    echo "Disabling this configure test will create a broken FFmpeg."

    if test "$BASH_VERSION" = '2.04.0(1)-release'; then

        echo "This bash version ($BASH_VERSION) is broken on your platform."

        echo "Upgrade to a later version if available."

    fi

    exit 1

fi

show_help(){

cat <<EOF

Usage: configure [options]

Options: [defaults in brackets after descriptions]

Standard options:

  --help                   print this message

  --logfile=FILE           log tests and output to FILE [config.log]

  --disable-logging        do not log configure debug information

  --prefix=PREFIX          install in PREFIX [$prefix]

  --bindir=DIR             install binaries in DIR [PREFIX/bin]

  --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]

  --libdir=DIR             install libs in DIR [PREFIX/lib]

  --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]

  --incdir=DIR             install includes in DIR [PREFIX/include]

  --mandir=DIR             install man page in DIR [PREFIX/share/man]

Configuration options:

  --disable-static         do not build static libraries [no]

  --enable-shared          build shared libraries [no]

  --enable-gpl             allow use of GPL code, the resulting libs

                           and binaries will be under GPL [no]

  --enable-version3        upgrade (L)GPL to version 3 [no]

  --enable-nonfree         allow use of nonfree code, the resulting libs

                           and binaries will be unredistributable [no]

  --disable-doc            do not build documentation

  --disable-ffmpeg         disable ffmpeg build

  --disable-ffplay         disable ffplay build

  --disable-ffprobe        disable ffprobe build

  --disable-ffserver       disable ffserver build

  --disable-avdevice       disable libavdevice build

  --disable-avcodec        disable libavcodec build

  --disable-avformat       disable libavformat build

  --disable-swscale        disable libswscale build

  --enable-postproc        enable GPLed postprocessing support [no]

  --disable-avfilter       disable video filter support [no]

  --disable-pthreads       disable pthreads [auto]

  --enable-w32threads      use Win32 threads [no]

  --enable-x11grab         enable X11 grabbing [no]

  --disable-network        disable network support [no]

  --disable-mpegaudio-hp   faster (but less accurate) MPEG audio decoding [no]

  --enable-gray            enable full grayscale support (slower color)

  --disable-swscale-alpha  disable alpha channel support in swscale

  --disable-fastdiv        disable table-based division

  --enable-small           optimize for size instead of speed

  --disable-aandct         disable AAN DCT code

  --disable-dct            disable DCT code

  --disable-fft            disable FFT code

  --disable-golomb         disable Golomb code

  --disable-huffman        disable Huffman code

  --disable-lpc            disable LPC code

  --disable-mdct           disable MDCT code

  --disable-rdft           disable RDFT code

  --disable-vaapi          disable VAAPI code

  --disable-vdpau          disable VDPAU code

  --disable-dxva2          disable DXVA2 code

  --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)

  --enable-hardcoded-tables use hardcoded tables instead of runtime generation

  --enable-memalign-hack   emulate memalign, interferes with memory debuggers

  --disable-everything     disable all components listed below

  --disable-encoder=NAME   disable encoder NAME

  --enable-encoder=NAME    enable encoder NAME

  --disable-encoders       disable all encoders

  --disable-decoder=NAME   disable decoder NAME

  --enable-decoder=NAME    enable decoder NAME

  --disable-decoders       disable all decoders

  --disable-hwaccel=NAME   disable hwaccel NAME

  --enable-hwaccel=NAME    enable hwaccel NAME

  --disable-hwaccels       disable all hwaccels

  --disable-muxer=NAME     disable muxer NAME

  --enable-muxer=NAME      enable muxer NAME

  --disable-muxers         disable all muxers

  --disable-demuxer=NAME   disable demuxer NAME

  --enable-demuxer=NAME    enable demuxer NAME

  --disable-demuxers       disable all demuxers

  --enable-parser=NAME     enable parser NAME

  --disable-parser=NAME    disable parser NAME

  --disable-parsers        disable all parsers

  --enable-bsf=NAME        enable bitstream filter NAME

  --disable-bsf=NAME       disable bitstream filter NAME

  --disable-bsfs           disable all bitstream filters

  --enable-protocol=NAME   enable protocol NAME

  --disable-protocol=NAME  disable protocol NAME

  --disable-protocols      disable all protocols

  --disable-indev=NAME     disable input device NAME

  --disable-outdev=NAME    disable output device NAME

  --disable-indevs         disable input devices

  --disable-outdevs        disable output devices

  --disable-devices        disable all devices

  --enable-filter=NAME     enable filter NAME

  --disable-filter=NAME    disable filter NAME

  --disable-filters        disable all filters

  --list-decoders          show all available decoders

  --list-encoders          show all available encoders

  --list-hwaccels          show all available hardware accelerators

  --list-muxers            show all available muxers

  --list-demuxers          show all available demuxers

  --list-parsers           show all available parsers

  --list-protocols         show all available protocols

  --list-bsfs              show all available bitstream filters

  --list-indevs            show all available input devices

  --list-outdevs           show all available output devices

  --list-filters           show all available filters

External library support:

  --enable-avisynth        enable reading of AVISynth script files [no]

  --enable-bzlib           enable bzlib [autodetect]

  --enable-frei0r          enable frei0r video filtering

  --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]

  --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]

  --enable-libopencv       enable video filtering via libopencv [no]

  --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394

                           and libraw1394 [no]

  --enable-libdirac        enable Dirac support via libdirac [no]

  --enable-libfaac         enable FAAC support via libfaac [no]

  --enable-libfreetype     enable libfreetype [no]

  --enable-libgsm          enable GSM support via libgsm [no]

  --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]

  --enable-libnut          enable NUT (de)muxing via libnut,

                           native (de)muxer exists [no]

  --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]

  --enable-librtmp         enable RTMP[E] support via librtmp [no]

  --enable-libschroedinger enable Dirac support via libschroedinger [no]

  --enable-libspeex        enable Speex decoding via libspeex [no]

  --enable-libtheora       enable Theora encoding via libtheora [no]

  --enable-libvorbis       enable Vorbis encoding via libvorbis,

                           native implementation exists [no]

  --enable-libvpx          enable VP8 support via libvpx [no]

  --enable-libx264         enable H.264 encoding via x264 [no]

  --enable-libxavs         enable AVS encoding via xavs [no]

  --enable-libxvid         enable Xvid encoding via xvidcore,

                           native MPEG-4/Xvid encoder exists [no]

  --enable-mlib            enable Sun medialib [no]

  --enable-zlib            enable zlib [autodetect]

Advanced options (experts only):

  --source-path=PATH       path to source code [$source_path]

  --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]

  --enable-cross-compile   assume a cross-compiler is used

  --sysroot=PATH           root of cross-build tree

  --sysinclude=PATH        location of cross-build system headers

  --target-os=OS           compiler targets OS [$target_os]

  --target-exec=CMD        command to run executables on target

  --target-path=DIR        path to view of build directory on target

  --nm=NM                  use nm tool

  --ar=AR                  use archive tool AR [$ar_default]

  --as=AS                  use assembler AS [$as_default]

  --cc=CC                  use C compiler CC [$cc_default]

  --ld=LD                  use linker LD

  --host-cc=HOSTCC         use host C compiler HOSTCC

  --host-cflags=HCFLAGS    use HCFLAGS when compiling for host

  --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host

  --host-libs=HLIBS        use libs HLIBS when linking for host

  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]

  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]

  --extra-libs=ELIBS       add ELIBS [$ELIBS]

  --extra-version=STRING   version string suffix []

  --build-suffix=SUFFIX    library name suffix []

  --arch=ARCH              select architecture [$arch]

  --cpu=CPU                select the minimum required CPU (affects

                           instruction selection, may crash on older CPUs)

  --disable-asm            disable all assembler optimizations

  --disable-altivec        disable AltiVec optimizations

  --disable-amd3dnow       disable 3DNow! optimizations

  --disable-amd3dnowext    disable 3DNow! extended optimizations

  --disable-mmx            disable MMX optimizations

  --disable-mmx2           disable MMX2 optimizations

  --disable-sse            disable SSE optimizations

  --disable-ssse3          disable SSSE3 optimizations

  --disable-avx            disable AVX optimizations

  --disable-armv5te        disable armv5te optimizations

  --disable-armv6          disable armv6 optimizations

  --disable-armv6t2        disable armv6t2 optimizations

  --disable-armvfp         disable ARM VFP optimizations

  --disable-iwmmxt         disable iwmmxt optimizations

  --disable-mmi            disable MMI optimizations

  --disable-neon           disable neon optimizations

  --disable-vis            disable VIS optimizations

  --disable-yasm           disable use of yasm assembler

  --enable-pic             build position-independent code

  --malloc-prefix=PFX      prefix malloc and related names with PFX

  --enable-sram            allow use of on-chip SRAM

  --disable-symver         disable symbol versioning

Developer options (useful when working on FFmpeg itself):

  --disable-debug          disable debugging symbols

  --enable-debug=LEVEL     set the debug level [$debuglevel]

  --disable-optimizations  disable compiler optimizations

  --enable-extra-warnings  enable more compiler warnings

  --disable-stripping      disable stripping of executables and shared libraries

  --samples=PATH           location of test samples for FATE, if not set use

                           \$FATE_SAMPLES at make invocation time.

NOTE: Object files are built at the place where configure is launched.

EOF

  exit 0

}

quotes='""'

log(){

    echo "$@" >> $logfile

}

log_file(){

    log BEGIN $1

    pr -n -t $1 >> $logfile

    log END $1

}

echolog(){

    log "$@"

    echo "$@"

}

warn(){

    log "WARNING: $*"

    WARNINGS="${WARNINGS}WARNING: $*\n"

}

die(){

    echolog "$@"

    cat <<EOF

If you think configure made a mistake, make sure you are using the latest

version from Git.  If the latest version fails, report the problem to the

ffmpeg-user@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.

EOF

    if disabled logging; then

        cat <<EOF

Rerun configure with logging enabled (do not use --disable-logging), and

include the log this produces with your report.

EOF

    else

cat <<EOF

Include the log file "$logfile" produced by configure as this will help

solving the problem.

EOF

    fi

    exit 1

}

# Avoid locale weirdness, besides we really just want to translate ASCII.

toupper(){

    echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ

}

tolower(){

    echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz

}

c_escape(){

    echo "$*" | sed 's/["\\]/\\\0/g'

}

sh_quote(){

    v=$(echo "$1" | sed "s/'/'\\\\''/g")

    test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"

    echo "$v"

}

cleanws(){

    echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'

}

filter(){

    pat=$1

    shift

    for v; do

        eval "case $v in $pat) echo $v ;; esac"

    done

}

filter_out(){

    pat=$1

    shift

    for v; do

        eval "case $v in $pat) ;; *) echo $v ;; esac"

    done

}

map(){

    m=$1

    shift

    for v; do eval $m; done

}

set_all(){

    value=$1

    shift

    for var in $*; do

        eval $var=$value

    done

}

set_weak(){

    value=$1

    shift

    for var; do

        eval : \${$var:=$value}

    done

}

set_safe(){

    var=$1

    shift

    eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'

}

get_safe(){

    eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')

}

pushvar(){

    for var in $*; do

        eval level=\${${var}_level:=0}

        eval ${var}_${level}="\$$var"

        eval ${var}_level=$(($level+1))

    done

}

popvar(){

    for var in $*; do

        eval level=\${${var}_level:-0}

        test $level = 0 && continue

        eval level=$(($level-1))

        eval $var="\${${var}_${level}}"

        eval ${var}_level=$level

        eval unset ${var}_${level}

    done

}

enable(){

    set_all yes $*

}

disable(){

    set_all no $*

}

enable_weak(){

    set_weak yes $*

}

disable_weak(){

    set_weak no $*

}

enable_safe(){

    for var; do

        enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')

    done

}

disable_safe(){

    for var; do

        disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')

    done

}

do_enable_deep(){

    for var; do

        enabled $var && continue

        eval sel="\$${var}_select"

        eval sgs="\$${var}_suggest"

        pushvar var sgs

        enable_deep $sel

        popvar sgs

        enable_deep_weak $sgs

        popvar var

    done

}

enable_deep(){

    do_enable_deep $*

    enable $*

}

enable_deep_weak(){

    do_enable_deep $*

    enable_weak $*

}

enabled(){

    test "${1#!}" = "$1" && op== || op=!=

    eval test "x\$${1#!}" $op "xyes"

}

disabled(){

    test "${1#!}" = "$1" && op== || op=!=

    eval test "x\$${1#!}" $op "xno"

}

enabled_all(){

    for opt; do

        enabled $opt || return 1

    done

}

disabled_all(){

    for opt; do

        disabled $opt || return 1

    done

}

enabled_any(){

    for opt; do

        enabled $opt && return 0

    done

}

disabled_any(){

    for opt; do

        disabled $opt && return 0

    done

    return 1

}

set_default(){

    for opt; do

        eval : \${$opt:=\$${opt}_default}

    done

}

is_in(){

    value=$1

    shift

    for var in $*; do

        [ $var = $value ] && return 0

    done

    return 1

}

check_deps(){

    for cfg; do

        cfg="${cfg#!}"

        enabled ${cfg}_checking && die "Circular dependency for $cfg."

        disabled ${cfg}_checking && continue

        enable ${cfg}_checking

        eval dep_all="\$${cfg}_deps"

        eval dep_any="\$${cfg}_deps_any"

        eval dep_sel="\$${cfg}_select"

        eval dep_sgs="\$${cfg}_suggest"

        eval dep_ifa="\$${cfg}_if"

        eval dep_ifn="\$${cfg}_if_any"

        pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn

        check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn

        popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn

        [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }

        [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }

        enabled_all  $dep_all || disable $cfg

        enabled_any  $dep_any || disable $cfg

        disabled_any $dep_sel && disable $cfg

        if enabled $cfg; then

            eval dep_extralibs="\$${cfg}_extralibs"

            test -n "$dep_extralibs" && add_extralibs $dep_extralibs

            enable_deep $dep_sel

            enable_deep_weak $dep_sgs

        fi

        disable ${cfg}_checking

    done

}

print_config_h(){

    enabled $1 && v=1 || v=0

    echo "#define $2 $v"

}

print_config_mak(){

    enabled $1 && v= || v=!

    echo "$v$2=yes"

}

print_config_asm(){

    enabled $1 && echo "%define $2"

}

print_config(){

    pfx=$1

    files=$2

    shift 2

    for cfg; do

        ucname="$(toupper $cfg)"

        for f in $files; do

            "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f

        done

    done

}

print_enabled(){

    test "$1" = -n && end=" " && shift || end="\n"

    suf=$1

    shift

    for v; do

        enabled $v && printf "%s$end" ${v%$suf};

    done

}

append(){

    var=$1

    shift

    eval "$var=\"\$$var $*\""

}

prepend(){

    var=$1

    shift

    eval "$var=\"$* \$$var\""

}

add_cppflags(){

    append CPPFLAGS $($filter_cppflags "$@")

}

add_cflags(){

    append CFLAGS $($filter_cflags "$@")

}

add_asflags(){

    append ASFLAGS $($filter_asflags "$@")

}

add_ldflags(){

    append LDFLAGS "$@"

}

add_extralibs(){

    prepend extralibs "$@"

}

check_cmd(){

    log "$@"

    "$@" >> $logfile 2>&1

}

check_cc(){

    log check_cc "$@"

    cat > $TMPC

    log_file $TMPC

    check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC

}

check_cpp(){

    log check_cpp "$@"

    cat > $TMPC

    log_file $TMPC

    check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC

}

check_as(){

    log check_as "$@"

    cat > $TMPC

    log_file $TMPC

    check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC

}

check_asm(){

    log check_asm "$@"

    name="$1"

    code="$2"

    shift 2

    disable $name

    check_as "$@" <<EOF && enable $name

void foo(void){ __asm__ volatile($code); }

EOF

}

check_yasm(){

    log check_yasm "$@"

    echo "$1" > $TMPS

    log_file $TMPS

    shift 1

    check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS

}

check_ld(){

    log check_ld "$@"

    flags=''

    libs=''

    for f; do

        test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"

    done

    check_cc $($filter_cflags $flags) || return

    check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $extralibs $libs

}

check_cppflags(){

    log check_cppflags "$@"

    set -- $($filter_cppflags "$@")

    check_cc "$@" <<EOF && append CPPFLAGS "$@"

int x;

EOF

}

check_cflags(){

    log check_cflags "$@"

    set -- $($filter_cflags "$@")

    check_cc "$@" <<EOF && append CFLAGS "$@"

int x;

EOF

}

test_ldflags(){

    log test_ldflags "$@"

    check_ld "$@" <<EOF

int main(void){ return 0; }

EOF

}

check_ldflags(){

    log check_ldflags "$@"

    test_ldflags "$@" && add_ldflags "$@"

}

check_header(){

    log check_header "$@"

    header=$1

    shift

    disable_safe $header

    check_cpp "$@" <<EOF && enable_safe $header

#include <$header>

int x;

EOF

}

check_func(){

    log check_func "$@"

    func=$1

    shift

    disable $func

    check_ld "$@" <<EOF && enable $func

extern int $func();

int main(void){ $func(); }

EOF

}

check_mathfunc(){

    log check_mathfunc "$@"

    func=$1

    shift

    disable $func

    check_ld "$@" <<EOF && enable $func

#include <math.h>

float foo(float f) { return $func(f); }

int main(void){ return 0; }

EOF

}

check_func_headers(){

    log check_func_headers "$@"

    headers=$1

    funcs=$2

    shift 2

    {

        for hdr in $headers; do

            echo "#include <$hdr>"

        done

        for func in $funcs; do

            echo "long check_$func(void) { return (long) $func; }"

        done

        echo "int main(void) { return 0; }"

    } | check_ld "$@" && enable $funcs && enable_safe $headers

}

check_cpp_condition(){

    log check_cpp_condition "$@"

    header=$1

    condition=$2

    shift 2

    check_cpp $($filter_cppflags "$@") <<EOF

#include <$header>

#if !($condition)

#error "unsatisfied condition: $condition"

#endif

EOF

}

check_lib(){

    log check_lib "$@"

    header="$1"

    func="$2"

    shift 2

    check_header $header && check_func $func "$@" && add_extralibs "$@"

}

check_lib2(){

    log check_lib2 "$@"

    headers="$1"

    funcs="$2"

    shift 2

    check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"

}

check_pkg_config(){

    log check_pkg_config "$@"

    pkg="$1"

    headers="$2"

    funcs="$3"

    shift 3

    $pkg_config --exists $pkg || return

    pkg_cflags=$($pkg_config --cflags $pkg)

    pkg_libs=$($pkg_config --libs $pkg)

    check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&

        set_safe ${pkg}_cflags $pkg_cflags   &&

        set_safe ${pkg}_libs   $pkg_libs

}

check_exec(){

    check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }

}

check_exec_crash(){

    code=$(cat)

    # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)

    # are safe but may not be available everywhere.  Thus we use

    # raise(SIGTERM) instead.  The check is run in a subshell so we

    # can redirect the "Terminated" message from the shell.  SIGBUS

    # is not defined by standard C so it is used conditionally.

    (check_exec "$@") >> $logfile 2>&1 <<EOF

#include <signal.h>

static void sighandler(int sig){

    raise(SIGTERM);

}

int main(void){

    signal(SIGILL, sighandler);

    signal(SIGFPE, sighandler);

    signal(SIGSEGV, sighandler);

#ifdef SIGBUS

    signal(SIGBUS, sighandler);

#endif

    { $code }

}

EOF

}

check_type(){

    log check_type "$@"

    headers=$1

    type=$2

    shift 2

    disable_safe "$type"

    incs=""

    for hdr in $headers; do

        incs="$incs

#include <$hdr>"

    done

    check_cc "$@" <<EOF && enable_safe "$type"

$incs

$type v;

EOF

}

check_struct(){

    log check_type "$@"

    headers=$1

    struct=$2

    member=$3

    shift 3

    disable_safe "${struct}_${member}"

    incs=""

    for hdr in $headers; do

        incs="$incs

#include <$hdr>"

    done

    check_cc "$@" <<EOF && enable_safe "${struct}_${member}"

$incs

const void *p = &(($struct *)0)->$member;

EOF

}

require(){

    name="$1"

    header="$2"

    func="$3"

    shift 3

    check_lib $header $func "$@" || die "ERROR: $name not found"

}

require2(){

    name="$1"

    headers="$2"

    func="$3"

    shift 3

    check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"

}

require_pkg_config(){

    pkg="$1"

    check_pkg_config "$@" || die "ERROR: $pkg not found"

    add_cflags    $(get_safe ${pkg}_cflags)

    add_extralibs $(get_safe ${pkg}_libs)

}

check_host_cc(){

    log check_host_cc "$@"

    cat > $TMPC

    log_file $TMPC

    check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC

}

check_host_cflags(){

    log check_host_cflags "$@"

    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" ||

        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

"

CONFIG_LIST="

    $COMPONENT_LIST

    aandct

    ac3dsp

    avcodec

    avdevice

    avfilter

    avformat

    avisynth

    bzlib

    crystalhd

    dct

    doc

    dwt

    dxva2

    fastdiv

    ffmpeg

    ffplay

    ffprobe

    ffserver

    fft

    frei0r

    golomb

    gpl

    gray

    h264dsp

    h264pred

    hardcoded_tables

    huffman

    libdc1394

    libdirac

    libfaac

    libfreetype

    libgsm

    libmp3lame

    libnut

    libopencore_amrnb

    libopencore_amrwb

    libopencv

    libopenjpeg

    librtmp

    libschroedinger

    libspeex

    libtheora

    libvorbis

    libvpx

    libx264

    libxavs

    libxvid

    lpc

    lsp

    mdct

    memalign_hack

    mlib

    mpegaudio_hp

    network

    nonfree

    pic

    postproc

    rdft

    rtpdec

    runtime_cpudetect

    shared

    small

    sram

    static

    swscale

    swscale_alpha

    vaapi

    vdpau

    version3

    x11grab

    zlib

"

THREADS_LIST='

    pthreads

    w32threads

'

ARCH_LIST='

    alpha

    arm

    avr32

    avr32_ap

    avr32_uc

    bfin

    ia64

    m68k

    mips

    mips64

    parisc

    ppc

    ppc64

    s390

    sh4

    sparc

    sparc64

    tomi

    x86

    x86_32

    x86_64

'

ARCH_EXT_LIST='

    altivec

    amd3dnow

    amd3dnowext

    armv5te

    armv6

    armv6t2

    armvfp

    avx

    iwmmxt

    mmi

    mmx

    mmx2

    neon

    ppc4xx

    sse

    ssse3

    vis

'

HAVE_LIST_PUB='

    bigendian

    fast_unaligned

'

HAVE_LIST="

    $ARCH_EXT_LIST

    $HAVE_LIST_PUB

    $THREADS_LIST

    aligned_stack

    alsa_asoundlib_h

    altivec_h

    arpa_inet_h

    attribute_may_alias

    attribute_packed

    bswap

    closesocket

    cmov

    conio_h

    dcbzl

    dev_bktr_ioctl_bt848_h

    dev_bktr_ioctl_meteor_h

    dev_ic_bt8xx_h

    dev_video_meteor_ioctl_meteor_h

    dev_video_bktr_ioctl_bt848_h

    dlfcn_h

    dlopen

    dos_paths

    ebp_available

    ebx_available

    exp2

    exp2f

    fast_64bit

    fast_clz

    fast_cmov

    fcntl

    fork

    getaddrinfo

    gethrtime

    GetProcessMemoryInfo

    GetProcessTimes

    getrusage

    gnu_as

    struct_rusage_ru_maxrss

    ibm_asm

    inet_aton

    inline_asm

    isatty

    ldbrx

    libdc1394_1

    libdc1394_2

    llrint

    llrintf

    local_aligned_16

    local_aligned_8

    localtime_r

    log2

    log2f

    loongson

    lrint

    lrintf

    lzo1x_999_compress

    machine_ioctl_bt848_h

    machine_ioctl_meteor_h

    malloc_h

    MapViewOfFile

    memalign

    mkstemp

    mmap

    pld

    posix_memalign

    round

    roundf

    sdl

    sdl_video_size

    setmode

    socklen_t

    soundcard_h

    poll_h

    setrlimit

    strerror_r

    strtok_r

    struct_addrinfo

    struct_ipv6_mreq

    struct_sockaddr_in6

    struct_sockaddr_sa_len

    struct_sockaddr_storage

    symver

    symver_gnu_asm

    symver_asm_label

    sys_mman_h

    sys_resource_h

    sys_select_h

    sys_soundcard_h

    sys_videoio_h

    ten_operands

    termios_h

    threads

    truncf

    vfp_args

    VirtualAlloc

    winsock2_h

    xform_asm

    xmm_clobbers

    yasm

"

# options emitted with CONFIG_ prefix but not available on command line

CONFIG_EXTRA="

    avutil

    gplv3

    lgplv3

"

CMDLINE_SELECT="

    $ARCH_EXT_LIST

    $CONFIG_LIST

    $THREADS_LIST

    asm

    cross_compile

    debug

    extra_warnings

    logging

    optimizations

    stripping

    symver

    yasm

"

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_ldflags

    host_libs

    host_os

    ld

    logfile

    malloc_prefix

    nm

    pkg_config

    samples

    source_path

    strip

    sysinclude

    sysroot

    target_exec

    target_os

    target_path

"

CMDLINE_APPEND="

    extra_cflags

"

# code dependency declarations

# architecture extensions

armv5te_deps="arm"

armv6_deps="arm"

armv6t2_deps="arm"

armvfp_deps="arm"

iwmmxt_deps="arm"

neon_deps="arm"

mmi_deps="mips"

altivec_deps="ppc"

ppc4xx_deps="ppc"

vis_deps="sparc"

x86_64_suggest="cmov fast_cmov"

amd3dnow_deps="mmx"

amd3dnowext_deps="amd3dnow"

mmx_deps="x86"

mmx2_deps="mmx"

sse_deps="mmx"

ssse3_deps="sse"

avx_deps="ssse3"

aligned_stack_if_any="ppc x86"

fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"

fast_clz_if_any="alpha armv5te avr32 mips ppc x86"

fast_unaligned_if_any="armv6 ppc x86"

need_memalign="altivec neon sse"

inline_asm_deps="!tms470"

symver_if_any="symver_asm_label symver_gnu_asm"

# subsystems

dct_select="rdft"

mdct_select="fft"

rdft_select="fft"

# decoders / encoders / hardware accelerators

aac_decoder_select="mdct rdft"

aac_encoder_select="mdct"

aac_latm_decoder_select="aac_decoder aac_latm_parser"

ac3_decoder_select="mdct ac3_parser"

ac3_encoder_select="mdct ac3dsp"

ac3_fixed_encoder_select="ac3dsp"

alac_encoder_select="lpc"

amrnb_decoder_select="lsp"

amrwb_decoder_select="lsp"

atrac1_decoder_select="mdct"

atrac3_decoder_select="mdct"

binkaudio_dct_decoder_select="mdct rdft dct"

binkaudio_rdft_decoder_select="mdct rdft"

cavs_decoder_select="golomb"

cook_decoder_select="mdct"

cscd_decoder_suggest="zlib"

dca_decoder_select="mdct"

dnxhd_encoder_select="aandct"

dxa_decoder_select="zlib"

eac3_decoder_select="ac3_decoder"

eamad_decoder_select="aandct"

eatgq_decoder_select="aandct"

eatqi_decoder_select="aandct"

ffv1_decoder_select="golomb"

flac_decoder_select="golomb"

flac_encoder_select="golomb lpc"

flashsv_decoder_select="zlib"

flashsv_encoder_select="zlib"

flv_decoder_select="h263_decoder"

flv_encoder_select="h263_encoder"

fraps_decoder_select="huffman"

h261_encoder_select="aandct"

h263_decoder_select="h263_parser"

h263_encoder_select="aandct"

h263_vaapi_hwaccel_select="vaapi h263_decoder"

h263i_decoder_select="h263_decoder"

h263p_encoder_select="h263_encoder"

h264_decoder_select="golomb h264dsp h264pred"

h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf"

h264_dxva2_hwaccel_deps="dxva2api_h"

h264_dxva2_hwaccel_select="dxva2 h264_decoder"

h264_vaapi_hwaccel_select="vaapi"

h264_vdpau_decoder_select="vdpau h264_decoder"

imc_decoder_select="fft mdct"

jpegls_decoder_select="golomb"

jpegls_encoder_select="golomb"

ljpeg_encoder_select="aandct"

loco_decoder_select="golomb"

mjpeg_encoder_select="aandct"

mlp_decoder_select="mlp_parser"

mp1float_decoder_select="dct"

mp2float_decoder_select="dct"

mp3adufloat_decoder_select="dct"

mp3float_decoder_select="dct"

mp3on4float_decoder_select="dct"

mpeg1video_encoder_select="aandct"

mpeg2video_encoder_select="aandct"

mpeg4_decoder_select="h263_decoder mpeg4video_parser"

mpeg4_encoder_select="h263_encoder"

mpeg_vdpau_decoder_select="vdpau mpegvideo_decoder"

mpeg1_vdpau_decoder_select="vdpau mpeg1video_decoder"

mpeg2_crystalhd_decoder_select="crystalhd"

mpeg2_dxva2_hwaccel_deps="dxva2api_h"

mpeg2_dxva2_hwaccel_select="dxva2 mpeg2video_decoder"

mpeg2_vaapi_hwaccel_select="vaapi mpeg2video_decoder"

mpeg4_crystalhd_decoder_select="crystalhd"

mpeg4_vaapi_hwaccel_select="vaapi mpeg4_decoder"

mpeg4_vdpau_decoder_select="vdpau mpeg4_decoder"

mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"

mpeg_xvmc_decoder_select="mpegvideo_decoder"

msmpeg4_crystalhd_decoder_select="crystalhd"

msmpeg4v1_decoder_select="h263_decoder"

msmpeg4v1_encoder_select="h263_encoder"

msmpeg4v2_decoder_select="h263_decoder"

msmpeg4v2_encoder_select="h263_encoder"

msmpeg4v3_decoder_select="h263_decoder"

msmpeg4v3_encoder_select="h263_encoder"

nellymoser_decoder_select="mdct"

nellymoser_encoder_select="mdct"

png_decoder_select="zlib"

png_encoder_select="zlib"

qcelp_decoder_select="lsp"

qdm2_decoder_select="mdct rdft"

ra_144_encoder_select="lpc"

rv10_decoder_select="h263_decoder"

rv10_encoder_select="h263_encoder"

rv20_decoder_select="h263_decoder"

rv20_encoder_select="h263_encoder"

rv30_decoder_select="golomb h264pred"

rv40_decoder_select="golomb h264pred"

shorten_decoder_select="golomb"

sipr_decoder_select="lsp"

snow_decoder_select="dwt"

snow_encoder_select="aandct dwt"

sonic_decoder_select="golomb"

sonic_encoder_select="golomb"

sonic_ls_encoder_select="golomb"

svq1_encoder_select="aandct"

svq3_decoder_select="golomb h264dsp h264pred"

svq3_decoder_suggest="zlib"

theora_decoder_select="vp3_decoder"

tiff_decoder_suggest="zlib"

tiff_encoder_suggest="zlib"

truehd_decoder_select="mlp_decoder"

tscc_decoder_select="zlib"

twinvq_decoder_select="mdct lsp"

vc1_decoder_select="h263_decoder"

vc1_crystalhd_decoder_select="crystalhd"

vc1_dxva2_hwaccel_deps="dxva2api_h DXVA_PictureParameters_wDecodedPictureIndex"

vc1_dxva2_hwaccel_select="dxva2 vc1_decoder"

vc1_vaapi_hwaccel_select="vaapi vc1_decoder"

vc1_vdpau_decoder_select="vdpau vc1_decoder"

vorbis_decoder_select="mdct"

vorbis_encoder_select="mdct"

vp6_decoder_select="huffman"

vp6a_decoder_select="vp6_decoder"

vp6f_decoder_select="vp6_decoder"

vp8_decoder_select="h264pred"

wmapro_decoder_select="mdct"

wmav1_decoder_select="mdct"

wmav1_encoder_select="mdct"

wmav2_decoder_select="mdct"

wmav2_encoder_select="mdct"

wmavoice_decoder_select="lsp rdft dct mdct"

wmv1_decoder_select="h263_decoder"

wmv1_encoder_select="h263_encoder"

wmv2_decoder_select="h263_decoder"

wmv2_encoder_select="h263_encoder"

wmv3_decoder_select="vc1_decoder"

wmv3_crystalhd_decoder_select="crystalhd"

wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"

wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"

wmv3_vdpau_decoder_select="vc1_vdpau_decoder"

zlib_decoder_select="zlib"

zlib_encoder_select="zlib"

zmbv_decoder_select="zlib"

zmbv_encoder_select="zlib"

crystalhd_deps="libcrystalhd_libcrystalhd_if_h"

vaapi_deps="va_va_h"

vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"

# parsers

h264_parser_select="golomb h264dsp h264pred"

# external libraries

libdirac_decoder_deps="libdirac !libschroedinger"

libdirac_encoder_deps="libdirac"

libfaac_encoder_deps="libfaac"

libgsm_decoder_deps="libgsm"

libgsm_encoder_deps="libgsm"

libgsm_ms_decoder_deps="libgsm"

libgsm_ms_encoder_deps="libgsm"

libmp3lame_encoder_deps="libmp3lame"

libopencore_amrnb_decoder_deps="libopencore_amrnb"

libopencore_amrnb_encoder_deps="libopencore_amrnb"

libopencore_amrwb_decoder_deps="libopencore_amrwb"

libopenjpeg_decoder_deps="libopenjpeg"

libschroedinger_decoder_deps="libschroedinger"

libschroedinger_encoder_deps="libschroedinger"

libspeex_decoder_deps="libspeex"

libtheora_encoder_deps="libtheora"

libvorbis_encoder_deps="libvorbis"

libvpx_decoder_deps="libvpx"

libvpx_encoder_deps="libvpx"

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"

libnut_demuxer_deps="libnut"

libnut_muxer_deps="libnut"

matroska_audio_muxer_select="matroska_muxer"

matroska_demuxer_suggest="zlib bzlib"

mov_demuxer_suggest="zlib"

mp3_demuxer_select="mpegaudio_parser"

mp4_muxer_select="mov_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"

sap_demuxer_select="sdp_demuxer"

sap_muxer_select="rtp_muxer rtp_protocol"

sdp_demuxer_select="rtpdec"

spdif_muxer_select="aac_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"

libdc1394_indev_deps="libdc1394"

oss_indev_deps_any="soundcard_h sys_soundcard_h"

oss_outdev_deps_any="soundcard_h sys_soundcard_h"

v4l_indev_deps="linux_videodev_h"

v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"

vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"

vfwcap_indev_extralibs="-lavicap32"

x11_grab_device_indev_deps="x11grab XShmCreateImage"

x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"

# protocols

gopher_protocol_deps="network"

http_protocol_deps="network"

http_protocol_select="tcp_protocol"

mmsh_protocol_select="http_protocol"

mmst_protocol_deps="network"

rtmp_protocol_select="tcp_protocol"

rtp_protocol_select="udp_protocol"

tcp_protocol_deps="network"

udp_protocol_deps="network"

# filters

blackframe_filter_deps="gpl"

cropdetect_filter_deps="gpl"

drawtext_filter_deps="libfreetype"

frei0r_filter_deps="frei0r dlopen strtok_r"

frei0r_src_filter_deps="frei0r dlopen strtok_r"

hqdn3d_filter_deps="gpl"

mp_filter_deps="gpl"

scale_filter_deps="swscale"

ocv_filter_deps="libopencv"

yadif_filter_deps="gpl"

# libraries

avdevice_deps="avcodec avformat"

avformat_deps="avcodec"

# programs

ffmpeg_deps="avcodec avformat swscale"

ffmpeg_select="buffer_filter"

ffplay_deps="avcodec avformat swscale sdl"

ffplay_select="rdft"

ffprobe_deps="avcodec avformat"

ffserver_deps="avformat ffm_muxer rtp_protocol rtsp_demuxer"

ffserver_extralibs='$ldl'

doc_deps="texi2html"

# tests

test_deps(){

    suf1=$1

    suf2=$2

    shift 2

    for v; do

        dep=${v%=*}

        tests=${v#*=}

        for name in ${tests}; do

            eval ${name}_test_deps="'${dep}$suf1 ${dep}$suf2'"

        done

    done

}

set_ne_test_deps(){

    eval ${1}_be_test_deps="bigendian"

    eval ${1}_le_test_deps="!bigendian"

}

test_deps _encoder _decoder                                             \

    adpcm_g726=g726                                                     \

    adpcm_ima_qt                                                        \

    adpcm_ima_wav                                                       \

    adpcm_ms                                                            \

    adpcm_swf                                                           \

    adpcm_yamaha=adpcm_yam                                              \

    alac                                                                \

    asv1                                                                \

    asv2                                                                \

    bmp                                                                 \

    dnxhd="dnxhd_1080i dnxhd_720p dnxhd_720p_rd"                        \

    dvvideo="dv dv50"                                                   \

    ffv1                                                                \

    flac                                                                \

    flashsv                                                             \

    flv                                                                 \

    gif                                                                 \

    h261                                                                \

    h263="h263 h263p"                                                   \

    huffyuv                                                             \

    jpegls                                                              \

    mjpeg="jpg mjpeg ljpeg"                                             \

    mp2                                                                 \

    mpeg1video="mpeg mpeg1b"                                            \

    mpeg2video="mpeg2 mpeg2thread"                                      \

    mpeg4="mpeg4 mpeg4adv mpeg4nr mpeg4thread error rc"                 \

    msmpeg4v3=msmpeg4                                                   \

    msmpeg4v2                                                           \

    pbm=pbmpipe                                                         \

    pcx                                                                 \

    pgm="pgm pgmpipe"                                                   \

    png                                                                 \

    ppm="ppm ppmpipe"                                                   \

    rawvideo="rgb yuv"                                                  \

    roq                                                                 \

    rv10                                                                \

    rv20                                                                \

    sgi                                                                 \

    snow="snow snowll"                                                  \

    svq1                                                                \

    targa=tga                                                           \

    tiff                                                                \

    wmav1                                                               \

    wmav2                                                               \

    wmv1                                                                \

    wmv2                                                                \

test_deps _muxer _demuxer                                               \

    aiff                                                                \

    pcm_alaw=alaw                                                       \

    asf                                                                 \

    au                                                                  \

    avi                                                                 \

    dv=dv_fmt                                                           \

    ffm                                                                 \

    flv=flv_fmt                                                         \

    gxf                                                                 \

    matroska=mkv                                                        \

    mmf                                                                 \

    mov                                                                 \

    pcm_mulaw=mulaw                                                     \

    mxf                                                                 \

    nut                                                                 \

    ogg                                                                 \

    rawvideo=pixfmt                                                     \

    rm                                                                  \

    swf                                                                 \

    mpegts=ts                                                           \

    voc                                                                 \