configure

#!/bin/sh
#
# FFmpeg configure script
#
# Copyright (c) 2000, 2001, 2002 Fabrice Bellard
# Copyright (c) 2005-2006 Diego Biurrun
# Copyright (c) 2005-2006 Mans Rullgard
#

# 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(){
  echo "Usage: configure [options]"
  echo "Options: [defaults in brackets after descriptions]"
  echo
  echo "Standard options:"
  echo "  --help                   print this message"
  echo "  --log[=FILE|yes|no]      log tests and output to FILE [config.err]"
  echo "  --prefix=PREFIX          install in PREFIX [$PREFIX]"
  echo "  --libdir=DIR             install libs in DIR [PREFIX/lib]"
  echo "  --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]"
  echo "  --incdir=DIR             install includes in DIR [PREFIX/include/ffmpeg]"
  echo "  --mandir=DIR             install man page in DIR [PREFIX/share/man]"
  echo "  --enable-static          build static libraries [default=yes]"
  echo "  --disable-static         do not build static libraries [default=no]"
  echo "  --enable-shared          build shared libraries [default=no]"
  echo "  --disable-shared         do not build shared libraries [default=yes]"
  echo "  --enable-gpl             allow use of GPL code, the resulting libav*"
  echo "                           and ffmpeg will be under GPL [default=no]"
  echo "  --enable-pp              enable GPLed postprocessing support [default=no]"
  echo "  --enable-swscaler        software scaler support [default=no]"
  echo "  --enable-beosthreads     use BeOS threads [default=no]"
  echo "  --enable-pthreads        use pthreads [default=no]"
  echo "  --enable-w32threads      use Win32 threads [default=no]"
  echo "  --enable-x11grab         enable X11 grabbing [default=no]"
  echo
  echo "External library support:"
  echo "  --enable-sunmlib         use Sun medialib [default=no]"
  echo "  --enable-liba52          enable GPLed liba52 support [default=no]"
  echo "  --enable-liba52bin       open liba52.so.0 at runtime [default=no]"
  echo "  --enable-avisynth        allow reading AVISynth script files [default=no]"
  echo "  --enable-libamr-nb       enable libamr-nb floating point audio codec"
  echo "  --enable-libamr-wb       enable libamr-wb floating point audio codec"
  echo "  --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394"
  echo "                           and libraw1394 [default=no]"
  echo "  --enable-libfaac         enable FAAC support via libfaac [default=no]"
  echo "  --enable-libfaad         enable FAAD support via libfaad [default=no]"
  echo "  --enable-libfaadbin      open libfaad.so.0 at runtime [default=no]"
  echo "  --enable-libgsm          enable GSM support via libgsm [default=no]"
  echo "  --enable-libmp3lame      enable MP3 encoding via libmp3lame [default=no]"
  echo "  --enable-libnut          enable NUT (de)muxing via libnut,"
  echo "                           native demuxer exists [default=no]"
  echo "  --enable-libogg          enable Ogg muxing via libogg [default=no]"
  echo "  --enable-libtheora       enable Theora encoding via libtheora [default=no]"
  echo "  --enable-libvorbis       enable Vorbis en/decoding via libvorbis,"
  echo "                           native implementations exist [default=no]"
  echo "  --enable-libx264         enable H.264 encoding via x264 [default=no]"
  echo "  --enable-libxvid         enable Xvid encoding via xvidcore,"
  echo "                           native MPEG-4/Xvid encoder exists [default=no]"
  echo ""
  echo "Advanced options (experts only):"
  echo "  --source-path=PATH       path to source code [$source_path]"
  echo "  --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]"
  echo "  --cross-compile          assume a cross-compiler is used"
  echo "  --target-os=OS           compiler targets OS [$targetos]"
  echo "  --cc=CC                  use C compiler CC [$cc]"
  echo "  --make=MAKE              use specified make [$make]"
  echo "  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]"
  echo "  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]"
  echo "  --extra-libs=ELIBS       add ELIBS [$ELIBS]"
  echo "  --build-suffix=SUFFIX    suffix for application specific build []"
  echo "  --arch=ARCH              select architecture  [$arch]"
  echo "  --cpu=CPU                selects the minimum cpu required (affects"
  echo "                           instruction selection, may crash on older CPUs)"
  echo "  --enable-powerpc-perf    enable performance report on PPC"
  echo "                           (requires enabling PMC)"
  echo "  --disable-mmx            disable MMX usage"
  echo "  --disable-armv5te        disable armv5te usage"
  echo "  --disable-armv6          disable armv6 usage"
  echo "  --disable-iwmmxt         disable iwmmxt usage"
  echo "  --disable-altivec        disable AltiVec usage"
  echo "  --disable-network        disable network support [default=no]"
  echo "  --disable-ipv6           disable ipv6 support [default=no]"
  echo "  --disable-zlib           disable zlib [default=no]"
  echo "  --disable-vhook          disable video hooking support"
  echo "  --disable-debug          disable debugging symbols"
  echo "  --disable-mpegaudio-hp   faster (but less accurate)"
  echo "                           MPEG audio decoding [default=no]"
  echo "  --enable-gray            enable full grayscale support (slower color)"
  echo "  --disable-ffmpeg         disable ffmpeg build"
  echo "  --disable-ffserver       disable ffserver build"
  echo "  --disable-ffplay         disable ffplay build"
  echo "  --enable-small           optimize for size instead of speed"
  echo "  --enable-memalign-hack   emulate memalign, interferes with memory debuggers"
  echo "  --disable-encoder=NAME   disables encoder NAME"
  echo "  --enable-encoder=NAME    enables encoder NAME"
  echo "  --disable-decoder=NAME   disables decoder NAME"
  echo "  --enable-decoder=NAME    enables decoder NAME"
  echo "  --disable-encoders       disables all encoders"
  echo "  --disable-decoders       disables all decoders"
  echo "  --disable-muxer=NAME     disables muxer NAME"
  echo "  --enable-muxer=NAME      enables muxer NAME"
  echo "  --disable-muxers         disables all muxers"
  echo "  --disable-demuxer=NAME   disables demuxer NAME"
  echo "  --enable-demuxer=NAME    enables demuxer NAME"
  echo "  --disable-demuxers       disables all demuxers"
  echo "  --enable-parser=NAME     enables parser NAME"
  echo "  --disable-parser=NAME    disables parser NAME"
  echo "  --disable-parsers        disables all parsers"
  echo "  --enable-bsf=NAME        enables bitstream filter NAME"
  echo "  --disable-bsf=NAME       disables bitstream filter NAME"
  echo "  --disable-bsfs           disables all bitstream filters"
  echo "  --enable-protocol=NAME   enables protocol NAME"
  echo "  --disable-protocol=NAME  disables protocol NAME"
  echo "  --disable-protocols      disables all protocols"
  echo "  --list-decoders          show all available decoders"
  echo "  --list-encoders          show all available encoders"
  echo "  --list-muxers            show all available muxers"
  echo "  --list-demuxers          show all available demuxers"
  echo "  --list-parsers           show all available parsers"
  echo "  --list-protocols         show all available protocols"
  echo "  --list-bsfs              show all available bitstream filters"
  echo
  echo "Developer options (useful when working on FFmpeg itself):"
  echo "  --enable-gprof           enable profiling with gprof [$gprof]"
  echo "  --disable-opts           disable compiler optimizations"
  echo "  --enable-extra-warnings  enable more compiler warnings"
  echo "  --disable-strip          disable stripping of executables and shared libraries"
  echo ""
  echo "NOTE: Object files are built at the place where configure is launched."
  exit 1
}

log(){
    echo "$@" >>$logfile
}

log_file(){
    log BEGIN $1
    cat -n $1 >>$logfile
    log END $1
}

echolog(){
    log "$@"
    echo "$@"
}

die(){
    echolog "$@"
    cat <<EOF
If you think configure made a mistake, make sure you are using the latest
version from SVN.  If the latest version fails, report the problem to the
ffmpeg-devel@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
EOF
    if enabled logging; then
        cat <<EOF
Include the log file "$logfile" produced by configure as this will help
solving the problem.
EOF
    else
cat <<EOF
Rerun configure with logging enabled (do not use --log=no), and include the
log this produces with your report.
EOF
    fi
    rm -f $TMPC $TMPO $TMPE $TMPS $TMPH
    exit 1
}

# "tr '[a-z]' '[A-Z]'" is a workaround for Solaris tr not grokking "tr a-z A-Z"
toupper(){
    echo "$@" | tr '[a-z]' '[A-Z]'
}

tolower(){
    echo "$@" | tr '[A-Z]' '[a-z]'
}

set_all(){
    value=$1
    shift
    for var in $*; do
        eval $var=$value
    done
}

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 $*
}

enabled(){
    eval test "x\$$1" = "xyes"
}

disabled(){
    eval test "x\$$1" = "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
}

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

check_deps(){
    for cfg; do
        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"

        pushvar cfg dep_all dep_any
        check_deps $dep_all $dep_any
        popvar cfg dep_all dep_any

        enabled_all $dep_all || disable $cfg
        enabled_any $dep_any || disable $cfg

        disable ${cfg}_checking
    done
}

print_config(){
    pfx=$1
    header=$2
    makefile=$3
    shift 3
    for cfg; do
        ucname="`toupper $cfg`"
        if enabled $cfg; then
            echo "#define ${pfx}${ucname} 1" >> $header
            echo "#define ENABLE_${ucname} 1" >> $header
            echo "${pfx}${ucname}=yes" >> $makefile
        else
            echo "#define ENABLE_${ucname} 0" >> $header
        fi
    done
}

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

save_flags(){
    flags_saved && return
    SAVE_CFLAGS="$CFLAGS"
    SAVE_LDFLAGS="$LDFLAGS"
    SAVE_extralibs="$extralibs"
}

restore_flags(){
    flags_saved || return
    CFLAGS="$SAVE_CFLAGS"
    LDFLAGS="$SAVE_LDFLAGS"
    extralibs="$SAVE_extralibs"
    unset SAVE_CFLAGS
    unset SAVE_LDFLAGS
    unset SAVE_extralibs
}

temp_cflags(){
    save_flags
    CFLAGS="$CFLAGS $*"
}

temp_ldflags(){
    save_flags
    LDFLAGS="$LDFLAGS $*"
}

temp_extralibs(){
    save_flags
    extralibs="$extralibs $*"
}

append(){
    var=$1
    shift
    flags_saved && eval "SAVE_$var=\"\$SAVE_$var $*\""
    eval "$var=\"\$$var $*\""
}

add_cflags(){
    append CFLAGS "$@"
}

add_ldflags(){
    append LDFLAGS "$@"
}

add_extralibs(){
    append extralibs "$@"
}

check_cmd(){
    log "$@"
    "$@" >>$logfile 2>&1
}

check_cc(){
    log check_cc "$@"
    cat >$TMPC
    log_file $TMPC
    check_cmd $cc $CFLAGS "$@" -c -o $TMPO $TMPC
}

check_cpp(){
    log check_cpp "$@"
    cat >$TMPC
    log_file $TMPC
    check_cmd $cc $CFLAGS "$@" -E -o $TMPO $TMPC
}

check_ld(){
    log check_ld "$@"
    check_cc || return
    flags=''
    libs=''
    for f; do
        test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
    done
    check_cmd $cc $LDFLAGS $flags -o $TMPE $TMPO $extralibs $libs
}

check_cflags(){
    log check_cflags "$@"
    check_cc "$@" <<EOF && add_cflags "$@"
int x;
EOF
}

check_ldflags(){
    log check_ldflags "$@"
    check_ld "$@" <<EOF && add_ldflags "$@"
int main(){
    return 0;
}
EOF
}

check_header(){
    log check_header "$@"
    header=$1
    shift
    var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
    disable $var
    check_cpp "$@" <<EOF && enable $var
#include <$header>
int x;
EOF
}

check_func(){
    log check_func "$@"
    func=$1
    shift
    disable $func
    check_ld "$@" <<EOF && enable $func
extern int $func();
int main(){
    $func();
}
EOF
}

check_func2(){
    log check_func2 "$@"
    headers=$1
    func=$2
    shift 2
    disable $func
    incs=""
    for hdr in $headers; do
        incs="$incs
#include <$hdr>"
    done
    check_ld "$@" <<EOF && enable $func
$incs
int main(){
    (void) $func;
    return 0;
}
EOF
}

check_lib(){
    log check_lib "$@"
    header="$1"
    func="$2"
    shift 2
    temp_extralibs "$@"
    check_header $header && check_func $func && add_extralibs "$@"
    err=$?
    restore_flags
    return $err
}

check_lib2(){
    log check_lib2 "$@"
    headers="$1"
    func="$2"
    shift 2
    temp_extralibs "$@"
    check_func2 "$headers" $func && add_extralibs "$@"
    err=$?
    restore_flags
    return $err
}

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(){
    signal(SIGILL, sighandler);
    signal(SIGFPE, sighandler);
    signal(SIGSEGV, sighandler);
#ifdef SIGBUS
    signal(SIGBUS, sighandler);
#endif
    { $code }
}
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"
}

check_foo_config(){
    cfg=$1
    pkg=$2
    header=$3
    func=$4
    shift 4
    disable $cfg
    check_cmd ${pkg}-config --version
    err=$?
    if test "$err" = 0; then
        temp_cflags `${pkg}-config --cflags`
        temp_extralibs `${pkg}-config --libs`
        check_lib "$@" $header $func && enable $cfg
    fi
    return $err
}

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

COMPONENT_LIST="
    bsfs
    decoders
    demuxers
    encoders
    muxers
    parsers
    protocols
"

CONFIG_LIST="
    $COMPONENT_LIST
    avisynth
    beos_netserver
    ffmpeg
    ffplay
    ffserver
    gpl
    gprof
    gray
    ipv6
    liba52
    liba52bin
    libamr
    libamr_nb
    libamr_wb
    libdc1394
    libfaac
    libfaad
    libfaadbin
    libgsm
    libmp3lame
    libnut
    libogg
    libtheora
    libvorbis
    libx264
    libxvid
    memalign_hack
    mpegaudio_hp
    network
    powerpc_perf
    pp
    small
    swscaler
    vhook
    x11grab
    zlib
"

THREADS_LIST='
    beosthreads
    pthreads
    w32threads
'

ARCH_LIST='
    alpha
    armv4l
    bfin
    ia64
    m68k
    mips
    parisc
    powerpc
    s390
    sh4
    sparc
    sparc64
    x86
    x86_32
    x86_64
'

ARCH_EXT_LIST='
    altivec
    armv5te
    armv6
    iwmmxt
    mmi
    mmx
    ssse3
'

HAVE_LIST="
    $ARCH_EXT_LIST
    $THREADS_LIST
    altivec_h
    arpa_inet_h
    byteswap_h
    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
    ebp_available
    ebx_available
    fast_64bit
    fast_cmov
    fast_unaligned
    fork
    freetype2
    gethrtime
    GetProcessTimes
    getrusage
    imlib2
    inet_aton
    lrintf
    machine_ioctl_bt848_h
    machine_ioctl_meteor_h
    malloc_h
    memalign
    mkstemp
    mlib
    ppc64
    sdl
    sdl_video_size
    soundcard_h
    sys_poll_h
    sys_soundcard_h
    termios_h
    threads
    winsock2_h
"

CMDLINE_SELECT="
    $ARCH_EXT_LIST
    $CONFIG_LIST
    $THREADS_LIST
    debug
    extra_warnings
    shared
    static
"

# code dependency declarations

# architecture extensions
altivec_deps="powerpc"
armv5te_deps="armv4l"
armv6_deps="armv4l"
iwmmxt_deps="armv4l"
mmi_deps="mips"
mmx_deps="x86"
ssse3_deps="x86"

# decoders / encoders
ac3_decoder_deps="gpl"
dxa_decoder_deps="zlib"
flashsv_decoder_deps="zlib"
flashsv_encoder_deps="zlib"
flv_decoder_deps="h263_decoder"
h263_decoder_deps="h263_parser mpeg4video_parser"
h263i_decoder_deps="h263_decoder"
h264_decoder_deps="h264_parser"
mpeg_xvmc_decoder_deps="xvmc"
mpeg4_decoder_deps="h263_decoder"
msmpeg4v1_decoder_deps="h263_decoder"
msmpeg4v2_decoder_deps="h263_decoder"
msmpeg4v3_decoder_deps="h263_decoder"
png_decoder_deps="zlib"
png_encoder_deps="zlib"
svq3_decoder_deps="h264_parser"
vc1_decoder_deps="h263_decoder"
wmv1_decoder_deps="h263_decoder"
wmv2_decoder_deps="h263_decoder"
wmv3_decoder_deps="h263_decoder"
zmbv_decoder_deps="zlib"
zmbv_encoder_deps="zlib"

# external libraries
liba52_decoder_deps="liba52"
libamr_nb_decoder_deps="libamr_nb"
libamr_nb_encoder_deps="libamr_nb"
libamr_wb_decoder_deps="libamr_wb"
libamr_wb_encoder_deps="libamr_wb"
libfaac_encoder_deps="libfaac"
libfaad_decoder_deps="libfaad"
libgsm_decoder_deps="libgsm"
libgsm_encoder_deps="libgsm"
libgsm_ms_decoder_deps="libgsm"
libgsm_ms_encoder_deps="libgsm"
libmp3lame_encoder_deps="libmp3lame"
libtheora_encoder_deps="libtheora"
libvorbis_decoder_deps="libvorbis"
libvorbis_encoder_deps="libvorbis"
libx264_encoder_deps="libx264"
libxvid_encoder_deps="libxvid"
mpeg4aac_decoder_deps="libfaad"

# demuxers / muxers
ac3_demuxer_deps="ac3_parser"
audio_beos_demuxer_deps="audio_beos"
audio_beos_muxer_deps="audio_beos"
bktr_demuxer_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
dv1394_demuxer_deps="dv1394"
libdc1394_demuxer_deps="libdc1394"
libnut_demuxer_deps="libnut"
libnut_muxer_deps="libnut"
mp3_demuxer_deps="mpegaudio_parser"
ogg_muxer_deps="libogg"
oss_demuxer_deps_any="soundcard_h sys_soundcard_h"
oss_muxer_deps_any="soundcard_h sys_soundcard_h"
redir_demuxer_deps="network"
rtp_muxer_deps="network mpegts_demuxer"
rtsp_demuxer_deps="rtp_protocol rtp_muxer"
sdp_demuxer_deps="rtsp_demuxer"
v4l2_demuxer_deps="linux_videodev2_h"
v4l_demuxer_deps="linux_videodev_h"
x11_grab_device_demuxer_deps="x11grab"

# protocols
http_protocol_deps="network"
rtp_protocol_deps="udp_protocol"
tcp_protocol_deps="network"
udp_protocol_deps="network"

# programs
ffplay_deps="sdl"
ffserver_deps="muxers rtp_protocol"


# set temporary file name
if test ! -z "$TMPDIR" ; then
    TMPDIR1="${TMPDIR}"
elif test ! -z "$TEMPDIR" ; then
    TMPDIR1="${TEMPDIR}"
else
    TMPDIR1="/tmp"
fi

TMPC="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.c"
TMPO="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.o"
TMPE="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}"
TMPS="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.S"
TMPH="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.h"

# default parameters

logging="yes"
logfile="config.err"

# installation paths
PREFIX="/usr/local"
libdir='$(PREFIX)/lib'
shlibdir="$libdir"
incdir='$(PREFIX)/include/ffmpeg'
mandir='$(PREFIX)/share/man'
bindir='$(PREFIX)/bin'

# toolchain
cc="gcc"
ar="ar"
ranlib="ranlib"
make="make"
strip="strip"
asmalign_pot="unknown"
ln_s="ln -sf"

# machine
arch=`uname -m`
cpu="generic"

# OS
targetos=$(tolower $(uname -s))

# libraries
zlib="yes"

# configurable options
debug="yes"
dostrip="yes"
ffmpeg="yes"
ffplay="yes"
ffserver="yes"
ipv6="yes"
static="yes"
mpegaudio_hp="yes"
network="yes"
optimize="yes"
protocols="yes"
vhook="default"

# build settings
SHFLAGS='-shared -Wl,-soname,$@'
VHOOKSHFLAGS='$(SHFLAGS)'
LDLATEFLAGS='-Wl,-rpath-link,\$(BUILD_ROOT)/libavcodec -Wl,-rpath-link,\$(BUILD_ROOT)/libavformat -Wl,-rpath-link,\$(BUILD_ROOT)/libavutil'
FFSERVERLDFLAGS=-Wl,-E
LDCONFIG="ldconfig"
LIBPREF="lib"
LIBSUF=".a"
LIB='$(LIBPREF)$(NAME)$(LIBSUF)'
SLIBPREF="lib"
SLIBSUF=".so"
SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
LIB_INSTALL_EXTRA_CMD='$(RANLIB) "$(LIBDIR)/$(LIB)"'

# find source path
source_path="`dirname \"$0\"`"
source_path_used="yes"
if test -z "$source_path" -o "$source_path" = "." ; then
    source_path="`pwd`"
    source_path_used="no"
else
    source_path="`cd \"$source_path\"; pwd`"
    echo "$source_path" | grep -q '[[:blank:]]' &&
      die "Out of tree builds are impossible with whitespace in source path."
fi

if test x"$1" = x"-h" -o x"$1" = x"--help" ; then
    show_help
fi

FFMPEG_CONFIGURATION="$@"

ENCODER_LIST=`sed -n 's/^[^#]*ENC.*(.*, *\(.*\)).*/\1_encoder/p' "$source_path/libavcodec/allcodecs.c"`
DECODER_LIST=`sed -n 's/^[^#]*DEC.*(.*, *\(.*\)).*/\1_decoder/p' "$source_path/libavcodec/allcodecs.c"`
PARSER_LIST=`sed -n 's/^[^#]*PARSER.*(.*, *\(.*\)).*/\1_parser/p' "$source_path/libavcodec/allcodecs.c"`
BSF_LIST=`sed -n 's/^[^#]*BSF.*(.*, *\(.*\)).*/\1_bsf/p' "$source_path/libavcodec/allcodecs.c"`
MUXER_LIST=`sed -n 's/^[^#]*_MUX.*(.*, *\(.*\)).*/\1_muxer/p' "$source_path/libavformat/allformats.c"`
DEMUXER_LIST=`sed -n 's/^[^#]*DEMUX.*(.*, *\(.*\)).*/\1_demuxer/p' "$source_path/libavformat/allformats.c"`
PROTOCOL_LIST=`sed -n 's/^[^#]*PROTOCOL.*(.*, *\(.*\)).*/\1_protocol/p' "$source_path/libavformat/allformats.c"`

enable $ENCODER_LIST $DECODER_LIST $PARSER_LIST $MUXER_LIST $DEMUXER_LIST $PROTOCOL_LIST $BSF_LIST
enable $ARCH_EXT_LIST

die_unknown(){
    echo "Unknown option \"$1\"."
    echo "See $0 --help for available options."
    exit 1
}

show_list() {
    for part in $*; do
        echo $part | sed 's/_[^_]*$//'
    done | sort
    exit 0
}

for opt do
  optval="${opt#*=}"
  case "$opt" in
  --log)
  ;;
  --log=*) logging="$optval"
  ;;
  --prefix=*) PREFIX="$optval"
  ;;
  --libdir=*) libdir="$optval"
  ;;
  --shlibdir=*) shlibdir="$optval"
  ;;
  --incdir=*) incdir="$optval"
  ;;
  --mandir=*) mandir="$optval"
  ;;
  --source-path=*) source_path="$optval"
  ;;
  --cross-prefix=*) cross_prefix="$optval"
  ;;
  --cross-compile) cross_compile="yes"
  ;;
  --target-os=*) targetos="$optval"
  ;;
  --cc=*) cc="$optval"
  ;;
  --make=*) make="$optval"
  ;;
  --extra-cflags=*) add_cflags "$optval"
  ;;
  --extra-ldflags=*) add_ldflags "$optval"
  ;;
  --extra-libs=*) add_extralibs "$optval"
  ;;
  --build-suffix=*) BUILDSUF="$optval"
  ;;
  --arch=*) arch="$optval"
  ;;
  --cpu=*) cpu="$optval"
  ;;
  --disable-opts) optimize="no"
  ;;
  --enable-sunmlib) mlib="yes"
  ;;
  --disable-strip) dostrip="no"
  ;;
  --disable-encoders) disable $ENCODER_LIST
  ;;
  --disable-decoders) disable $DECODER_LIST
  ;;
  --disable-muxers) disable $MUXER_LIST
  ;;
  --disable-demuxers) disable $DEMUXER_LIST
  ;;
  --disable-parsers) disable $PARSER_LIST
  ;;
  --disable-bsfs) disable $BSF_LIST
  ;;
  --disable-protocols) disable $PROTOCOL_LIST
  ;;
  --enable-*=*|--disable-*=*)
  eval `echo "$opt" | sed 's/=/-/;s/--/action=/;s/-/ thing=/;s/-/ name=/'`
  case "$thing" in
      encoder|decoder|muxer|demuxer|parser|bsf|protocol) $action ${optval}_${thing} ;;
      *) die_unknown "$opt" ;;
  esac
  ;;
  --enable-?*|--disable-?*)
  eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
  echo "$CMDLINE_SELECT" | grep -q "^ *$option\$" || die_unknown $opt
  $action $option
  ;;
  --list-*)
    NAME="${opt#--list-}"
    is_in $NAME $COMPONENT_LIST || die_unknown $opt
    NAME=$(toupper ${NAME%s})
    eval show_list \$${NAME}_LIST
  ;;
  --help) show_help
  ;;