configure

mediastreamer2是开源的网络传输媒体流的库

}

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(void){
    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(void){
    $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(int argc, char **argv){
    (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(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 $type
    incs=""
    for hdr in $headers; do
        incs="$incs
#include <$hdr>"
    done
    check_cc "$@" <<EOF && enable $type
$incs
$type v;
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
    indevs
    muxers
    outdevs
    parsers
    protocols
"

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

THREADS_LIST='
    beosthreads
    os2threads
    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
    vis
'

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
    libdc1394_1
    libdc1394_2
    llrint
    lrint
    lrintf
    machine_ioctl_bt848_h
    machine_ioctl_meteor_h
    malloc_h
    memalign
    mkstemp
    mlib
    ppc64
    round
    roundf
    sdl
    sdl_video_size
    socklen_t
    soundcard_h
    sys_poll_h
    sys_select_h
    sys_soundcard_h
    termios_h
    threads
    winsock2_h
"

CMDLINE_SELECT="
    $ARCH_EXT_LIST
    $CONFIG_LIST
    $THREADS_LIST
    debug
    extra_warnings
    optimizations
    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"
vis_deps="sparc"

# 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"
liba52bin_decoder_extralibs='$ldl'
libamr_nb_decoder_deps="libamr_nb"
libamr_nb_encoder_deps="libamr_nb"
libamr_wb_decoder_deps="libamr_wb"
libamr_wb_encoder_deps="libamr_wb"
libfaac_encoder_deps="libfaac"
libfaad_decoder_deps="libfaad"
libfaadbin_decoder_extralibs='$ldl'
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_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_demuxer_extralibs="-lmedia -lbe"
audio_beos_muxer_deps="audio_beos"
audio_beos_muxer_extralibs="-lmedia -lbe"
avisynth_demuxer_deps="avisynth"
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 dv_demuxer"
libdc1394_demuxer_deps="libdc1394"
libnut_demuxer_deps="libnut"
libnut_muxer_deps="libnut"
mp3_demuxer_deps="mpegaudio_parser"
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 rtp_protocol"
rtsp_demuxer_deps="sdp_demuxer"
sdp_demuxer_deps="rtp_protocol mpegts_demuxer"
v4l2_demuxer_deps="linux_videodev2_h"
v4l_demuxer_deps="linux_videodev_h"
x11_grab_device_demuxer_deps="x11grab XShmCreateImage"
x11_grab_device_demuxer_extralibs="-lX11 -lXext"

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

# programs
ffplay_deps="sdl"
ffserver_deps="ffm_muxer rtp_protocol rtsp_demuxer"
ffserver_extralibs='$ldl'
vhook_extralibs='$ldl'


# 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

enable logging