configure

  --prefix=*) PREFIX="$optval"
  ;;
  --libdir=*) libdir="$optval"
  ;;
  --shlibdir=*) shlibdir="$optval"
  ;;
  --incdir=*) incdir="$optval"
  ;;
  --mandir=*) mandir="$optval"
  ;;
  --source-path=*) source_path="$optval"
  ;;
  --cross-prefix=*) cross_prefix="$optval"
  ;;
  --cross-compile) cross_compile="yes"
  ;;
  --cc=*) cc="$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-v4l) video4linux="no"
  ;;
  --disable-v4l2) video4linux2="no"
  ;;
  --enable-mingwce) wince="yes"
  ;;
  --disable-opts) optimize="no"
  ;;
  --enable-small) optimize="small"
  ;;
  --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 $PARSER_LIST
  ;;
  --enable-*=*|--disable-*=*)
  eval `echo "$opt" | sed 's/=/-/;s/--/action=/;s/-/ thing=/;s/-/ name=/'`
  case "$thing" in
      encoder|decoder|muxer|demuxer|parser) $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
  ;;
  --help) show_help
  ;;
  *)
  die_unknown $opt
  ;;
  esac
done

if ! disabled logging ; then
    enabled logging || logfile="$logging"
    echo "# $0 $@" >$logfile
    set >>$logfile
else
    logfile=/dev/null
fi

if enabled_any mingw32 wince; then
    if enabled_all shared static; then
        cat <<EOF
You can only build one library type at once on MinGW.
Specify --disable-static --enable-shared to only build
the shared libraries. To build only the static libraries
you do not need to pass additional options.
EOF
        exit 1
    fi
    dv1394="no"
    dc1394="no"
    ffserver="no"
    network="no"
    if enabled wince; then
        protocols="no"
    fi
    SLIBPREF=""
    SLIBSUF=".dll"
    EXESUF=".exe"
    SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
    SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
    SLIB_EXTRA_CMD="-lib /machine:i386 /def:\$(@:${SLIBSUF}=.def)"
    SLIB_INSTALL_EXTRA_CMD="-install -m 644 \$(SLIBNAME_WITH_MAJOR:\$(SLIBSUF)=.lib) \"\$(shlibdir)/\$(SLIBNAME_WITH_MAJOR:\$(SLIBSUF)=.lib)\""
    SHFLAGS="-shared -Wl,--output-def,\$(@:${SLIBSUF}=.def),--out-implib,lib\$(SLIBNAME:\$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc"
fi

# Combine FFLDFLAGS and the LDFLAGS environment variable.
LDFLAGS="$FFLDFLAGS $LDFLAGS"

test -n "$cross_prefix" && cross_compile=yes
cc="${cross_prefix}${cc}"
ar="${cross_prefix}${ar}"
ranlib="${cross_prefix}${ranlib}"
strip="${cross_prefix}${strip}"

# we need to build at least one lib type
if disabled_all static shared; then
    cat <<EOF
At least one library type must be built.
Specify --enable-static to build the static libraries or --enable-shared to
build the shared libraries as well. To only build the shared libraries specify
--disable-static in addition to --enable-shared.
EOF
    exit 1;
fi

if disabled libogg; then
    enabled libtheora && die "libogg must be enabled to enable libtheora."
    enabled libvorbis && die "libogg must be enabled to enable libvorbis."
fi

if enabled_any libfaad libfaadbin ; then
    if check_header faad.h; then
        check_cc << EOF
#include <faad.h>
#ifndef FAAD2_VERSION
ok faad1
#endif
int main( void ) { return 0; }
EOF
        test $? = 0 && enable libfaad2
    else
        die "FAAD test failed."
    fi
fi


if disabled gpl ; then
    die_gpl_disabled(){
        name=$1
        shift
        enabled_any $@ && die "$name is under GPL and --enable-gpl is not specified."
    }
    die_gpl_disabled "The Postprocessing code" pp
    die_gpl_disabled "liba52"                  liba52
    die_gpl_disabled "libxvidcore"             xvid
    die_gpl_disabled "x264"                    x264
    die_gpl_disabled "libdts"                  libdts
    die_gpl_disabled "FAAD2"                   libfaad2
    die_gpl_disabled "The X11 grabber"         x11grab
    die_gpl_disabled "The software scaler"     swscaler
fi

# compute MMX state
if test $mmx = "default"; then
    if test $arch = "x86_32" -o $arch = "x86_64"; then
        mmx="yes"
    else
        mmx="no"
    fi
fi

test -z "$need_memalign" && need_memalign="$mmx"

#Darwin CC versions
needmdynamicnopic="no"
if test $targetos = Darwin; then
    if test -n "`$cc -v 2>&1 | grep xlc`"; then
        add_cflags "-qpdf2 -qlanglvl=extc99 -qmaxmem=-1 -qarch=auto -qtune=auto"
    else
        gcc_version="`$cc -v 2>&1 | grep version | cut -d ' ' -f3-`"
        case "$gcc_version" in
            *2.95*)
                add_cflags "-no-cpp-precomp -pipe"
                ;;
            *[34].*)
                add_cflags "-no-cpp-precomp -pipe -force_cpusubtype_ALL -Wno-sign-compare"
                if disabled shared; then
                   needmdynamicnopic="yes"
                fi
                ;;
            *)
                add_cflags "-no-cpp-precomp -pipe"
                if disabled shared; then
                   needmdynamicnopic="yes"
                fi
                ;;
        esac
    fi
fi

disabled optimize || add_cflags -fomit-frame-pointer

# Can only do AltiVec on PowerPC
if test $altivec = "default"; then
    if test $arch = "powerpc"; then
        altivec="yes"
    else
        altivec="no"
    fi
fi

# Add processor-specific flags
POWERPCMODE="32bits"
if test $cpu != "generic"; then
    warn_altivec(){
        $1 altivec && echo "WARNING: Tuning for $2 but AltiVec $1.";
    }
    case $cpu in
        601|ppc601|PowerPC601)
            add_cflags "-mcpu=601"
            warn_altivec enabled PPC601
        ;;
        603*|ppc603*|PowerPC603*)
            add_cflags "-mcpu=603"
            warn_altivec enabled PPC603
        ;;
        604*|ppc604*|PowerPC604*)
            add_cflags "-mcpu=604"
            warn_altivec enabled PPC604
        ;;
        G3|g3|75*|ppc75*|PowerPC75*)
            add_cflags "-mcpu=750 -mpowerpc-gfxopt"
            warn_altivec enabled PPC75x
        ;;
        G4|g4|745*|ppc745*|PowerPC745*)
            add_cflags "-mcpu=7450 -mpowerpc-gfxopt"
            warn_altivec disabled PPC745x
        ;;
        74*|ppc74*|PowerPC74*)
            add_cflags "-mcpu=7400 -mpowerpc-gfxopt"
            warn_altivec disabled PPC74xx
        ;;
        G5|g5|970|ppc970|PowerPC970|power4*|Power4*)
            add_cflags "-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
            warn_altivec disabled PPC970
            POWERPCMODE="64bits"
        ;;
        # targets that do NOT support conditional mov (cmov)
        i[345]86|pentium|pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
            add_cflags "-march=$cpu"
            cmov="no"
        ;;
        # targets that do support conditional mov (cmov)
        i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64|k8|opteron|athlon-fx|core2)
            add_cflags "-march=$cpu"
            cmov="yes"
            fast_cmov="yes"
        ;;
        # targets that do support conditional mov but on which it's slow
        pentium4|prescott|nocona)
            add_cflags "-march=$cpu"
            cmov="yes"
            fast_cmov="no"
        ;;
        sparc64)
            add_cflags "-mcpu=v9"
        ;;
        *)
        echo "WARNING: Unknown CPU \"$cpu\", ignored."
        ;;
    esac
fi

gnu_make(){
    $1 --version 2>&1 | grep -q GNU
}

if ! gnu_make $make; then
    gnu_make gmake && make=gmake || die "GNU make not found."
fi

# make sure we can execute files in $TMPDIR
cat >$TMPE 2>>$logfile <<EOF
#! /bin/sh
EOF
chmod +x $TMPE >>$logfile 2>&1
if ! $TMPE >>$logfile 2>&1; then
    cat <<EOF
Unable to create and execute files in $TMPDIR1.  Set the TMPDIR environment
variable to another directory and make sure that $TMPDIR1 is not mounted
noexec.
EOF
    die "Sanity test failed."
fi
rm $TMPE

# compiler sanity check
check_exec <<EOF
int main(){
    return 0;
}
EOF
if test "$?" != 0; then
    echo "$cc is unable to create an executable file."
    if test -z "$cross_prefix" && disabled cross_compile ; then
        echo "If $cc is a cross-compiler, use the --cross-compile option."
        echo "Only do this if you know what cross compiling means."
    fi
    die "C compiler test failed."
fi

# check for assembler specific support

if test $arch = "powerpc"; then
check_cc <<EOF && dcbzl=yes
int main(void) {
    register long zero = 0;
    char data[1024];
    asm volatile("dcbzl %0, %1" : : "b" (data), "r" (zero));
return 0;
}
EOF
fi

# check for SIMD availability

# AltiVec flags: The FSF version of GCC differs from the Apple version
if test $arch = "powerpc"; then
    if enabled altivec; then
        if test -n "`$cc -v 2>&1 | grep version | grep Apple`"; then
            add_cflags "-faltivec"
        else
            add_cflags "-maltivec -mabi=altivec"
        fi
    fi
fi

check_header altivec.h

# check if our compiler supports Motorola AltiVec C API
if enabled altivec; then
    if enabled altivec_h; then
        inc_altivec_h="#include <altivec.h>"
    else
        inc_altivec_h=
    fi
    check_cc <<EOF || altivec=no
$inc_altivec_h
int main(void) {
    vector signed int v1, v2, v3;
    v1 = vec_add(v2,v3);
    return 0;
}
EOF
fi

# check armv5te instructions support
if test $armv5te = "default" -a $arch = "armv4l"; then
    armv5te=no
    check_cc <<EOF && armv5te=yes
        int main(void) {
        __asm__ __volatile__ ("qadd r0, r0, r0");
        }
EOF
fi

if test $armv6 = "default" -a $arch = "armv4l"; then
    check_cc <<EOF && armv6=yes || armv6=no
int main(void) {
    __asm__ __volatile__ ("sadd16 r0, r0, r0");
}
EOF
fi

# check iwmmxt support
if test $iwmmxt = "default" -a $arch = "armv4l"; then
    iwmmxt=no
    check_cc <<EOF && iwmmxt=yes
        int main(void) {
        __asm__ __volatile__ ("wunpckelub wr6, wr4");
        }
EOF
fi

# mmi only available on mips
if test $mmi = "default"; then
    if test $arch = "mips"; then
        mmi="yes"
    else
        mmi="no"
    fi
fi

# check if our compiler supports mmi
enabled mmi && check_cc <<EOF || mmi="no"
int main(void) {
    __asm__ ("lq \$2, 0(\$2)");
    return 0;
}
EOF

# ---
# big/little-endian test
if disabled cross_compile; then
    check_ld <<EOF || die "endian test failed" && $TMPE && bigendian="yes"
#include <inttypes.h>
int main(int argc, char ** argv){
        volatile uint32_t i=0x01234567;
        return (*((uint8_t*)(&i))) == 0x67;
}
EOF
else
    # programs cannot be launched if cross compiling, so make a static guess
    if test "$arch" = "powerpc" -o "$arch" = "mips" ; then
        bigendian="yes"
    fi
fi

# ---
# check availability of some header files

check_header malloc.h
check_func memalign

if disabled_all memalign memalign_hack && enabled need_memalign ; then
    die "Error, no memalign() but SSE enabled, disable it or use --enable-memalign-hack."
fi

check_header byteswap.h

check_func inet_aton
check_func localtime_r
enabled zlib && check_lib zlib.h zlibVersion -lz || zlib="no"

# check for some common methods of building with pthread support
# do this before the optional library checks as some of them require pthreads
if enabled pthreads; then
    if check_func pthread_create; then
        :
    elif check_func pthread_create -pthread; then
        add_cflags -pthread
        add_ldflags -pthread
    elif check_func pthread_create -pthreads; then
        add_cflags -pthreads
        add_ldflags -pthreads
    elif ! check_lib pthread.h pthread_create -lpthread; then
        die "ERROR: can't find pthreads library"
    fi
fi

for thread in pthreads beosthreads os2threads w32threads; do
    if enabled $thread; then
        if ! disabled thread_type ; then
            die "ERROR: Only one thread type must be selected."
        else
            thread_type="$thread"
        fi
    fi
done

enabled_any amr_nb amr_nb_fixed amr_wb amr_if2 && enable amr
enabled_all amr_nb amr_nb_fixed &&
    die "Only one of amr_nb and amr_nb_fixed may be enabled."

# these are off by default, so fail if requested and not available
enabled liba52     && require liba52 a52dec/a52.h a52_init -la52
enabled libdts     && require libdts dts.h dts_init -ldts -lm
enabled libgsm     && require libgsm gsm.h gsm_create -lgsm
enabled libmp3lame && require LAME lame/lame.h lame_init -lmp3lame -lm
enabled libtheora  && require libtheora theora/theora.h theora_info_init -ltheora -logg
enabled libvorbis  && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbis -lvorbisenc -logg
enabled libogg     && require libogg ogg/ogg.h ogg_sync_init -logg
enabled libnut     && require libnut libnut.h nut_demuxer_init -lnut
enabled xvid       && require XviD xvid.h xvid_global -lxvidcore
enabled x264       && require x264 x264.h x264_encoder_open -lx264
enabled dc1394     && require libdc1394 libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394
enabled mlib       && require mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib

# Ugh, libfaac uses stdcall calling convention on win32 so we can't use
# the generic test functions
if enabled libfaac; then
    save_flags
    temp_extralibs -lfaac
    check_ld <<EOF && add_extralibs -lfaac || die "ERROR: libfaac not found"
#include <stdint.h>
#include <faac.h>
int main(){
    char *id, *cpr;
    faacEncGetVersion(&id, &cpr);
    return 0;
}
EOF
    restore_flags
fi

# Ugh, recent faad2 versions have renamed all functions and #define the
# old names in faad.h.  Generic tests won't work.
if enabled libfaad; then
    save_flags
    temp_extralibs -lfaad
    check_ld <<EOF && add_extralibs -lfaad || die "ERROR: libfaad not found"
#include <faad.h>
int main(){
    faacDecOpen();
    return 0;
}
EOF
    restore_flags
fi

# Ugh, avisynth uses WINAPI calls. Generic tests won't work.
if enabled avisynth; then
    save_flags
    temp_extralibs -lvfw32
    check_ld <<EOF && add_extralibs -lvfw32 || die "ERROR: vfw32 not found"
#include <windows.h>
#include <vfw.h>
int main(){
    AVIFileInit();
    return 0;
}
EOF
    restore_flags
fi


# test for lrintf in math.h
check_exec <<EOF && lrintf=yes || lrintf=no
#define _ISOC9X_SOURCE  1
#include <math.h>
int main( void ) { return (lrintf(3.999f) > 0)?0:1; }
EOF

_restrict=
for restrict_keyword in restrict __restrict__ __restrict; do
    check_cc <<EOF && _restrict=$restrict_keyword && break
void foo(char * $restrict_keyword p);
EOF
done

# dlopen/dlfcn.h probing

check_header dlfcn.h

if check_func dlopen; then
    ldl=
elif check_func dlopen -ldl; then
    ldl=-ldl
fi

test "$vhook" = "default" && vhook="$dlopen"

enabled_any vhook liba52bin libfaadbin && add_extralibs $ldl

if test "$targetos" = "CYGWIN" && enabled static ; then
    vhook="no"
    echo
    echo "At the moment vhooks don't work on Cygwin static builds."
    echo "Patches welcome."
    echo
fi

if enabled vhook; then
    check_ldflags -rdynamic
    check_ldflags -export-dynamic
fi

enabled audio_beos && add_extralibs "-lmedia -lbe"

##########################################
# imlib check

imlib2=no
if imlib2-config --version >/dev/null 2>&1; then
    temp_cflags `imlib2-config --cflags`
    temp_extralibs `imlib2-config --libs`
    check_lib Imlib2.h imlib_load_font && enable imlib2
    restore_flags
fi

##########################################
# FreeType check

freetype2=no
if freetype-config --version >/dev/null 2>&1; then
    temp_cflags `freetype-config --cflags`
    temp_extralibs `freetype-config --libs`
    check_lib ft2build.h FT_Init_FreeType && enable freetype2
    restore_flags
fi

##########################################
# SDL check

sdl_too_old=no
sdl=no
SDL_CONFIG="${cross_prefix}sdl-config"
if "${SDL_CONFIG}" --version >/dev/null 2>&1; then
    sdl_cflags=`"${SDL_CONFIG}" --cflags`
    temp_cflags $sdl_cflags
    temp_extralibs `"${SDL_CONFIG}" --libs`
    if check_lib SDL.h SDL_Init; then
        _sdlversion=`"${SDL_CONFIG}" --version | sed 's/[^0-9]//g'`
        if test "$_sdlversion" -lt 121 ; then
            sdl_too_old=yes
        else
            sdl=yes
            check_cc $sdl_cflags <<EOF && enable sdl_video_size
#include <SDL.h>
int main(void){
    const SDL_VideoInfo *vi = SDL_GetVideoInfo();
    int w = vi->current_w;
    return 0;
}
EOF
        fi
    fi
    restore_flags
fi

texi2html -version >/dev/null 2>&1 && enable texi2html || disable texi2html

##########################################
# IPv6 check

enabled network && enabled ipv6 && check_ld <<EOF && ipv6=yes || ipv6=no
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
int main( void ) {
  struct sockaddr_storage saddr;
  struct ipv6_mreq mreq6;
  getaddrinfo(0,0,0,0);
  getnameinfo(0,0,0,0,0,0,0);
  IN6_IS_ADDR_MULTICAST((const struct in6_addr *)0);
}
EOF

enabled video4linux  && check_header linux/videodev.h  || disable video4linux
enabled video4linux2 && check_header linux/videodev2.h || disable video4linux2

# check for ioctl_meteor.h, ioctl_bt848.h and alternatives
if enabled bktr; then
    { check_header dev/bktr/ioctl_meteor.h &&
      check_header dev/bktr/ioctl_bt848.h; } ||
    { check_header machine/ioctl_meteor.h &&
      check_header machine/ioctl_bt848.h; } ||
    { check_header dev/video/meteor/ioctl_meteor.h &&
      check_header dev/video/bktr/ioctl_bt848.h; } ||
    check_header dev/ic/bt8xx.h ||
    disable bktr
fi

enabled audio_oss &&
    check_header sys/soundcard.h ||
    check_header soundcard.h ||
    disable audio_oss

# Deal with the x11 frame grabber
enabled x11grab                         &&
enabled gpl                             &&
enabled x11_grab_device_demuxer         &&
check_header X11/Xlib.h                 &&
check_header X11/extensions/XShm.h      &&
check_func XOpenDisplay -lX11           &&
check_func XShmCreateImage -lX11 -lXext &&
add_extralibs -lX11 -lXext              ||
disable x11_grab_device_demuxer

enabled debug && add_cflags -g

# add some useful compiler flags if supported
check_cflags -Wdeclaration-after-statement
check_cflags -Wall
check_cflags -Wno-switch
check_cflags -Wdisabled-optimization
check_cflags -Wpointer-arith
check_cflags -Wredundant-decls
check_cflags -Wno-pointer-sign
enabled extra_warnings && check_cflags -Winline

# add some linker flags
check_ldflags $LDLATEFLAGS

# not all compilers support -Os
test "$optimize" = "small" && check_cflags -Os

if enabled optimize; then
    if test -n "`$cc -v 2>&1 | grep xlc`"; then
        add_cflags  "-O5"
        add_ldflags "-O5"
    else
        add_cflags "-O3"
    fi
fi

# PIC flags for shared library objects where they are needed
if enabled shared; then
    # LIBOBJFLAGS may have already been set in the OS configuration
    if test -z "$LIBOBJFLAGS" ; then
        case "$arch" in
            x86_64|ia64|alpha|sparc*|power*) LIBOBJFLAGS="\$(PIC)" ;;
        esac
    fi
fi

if enabled gprof; then
    add_cflags  "-p"
    add_ldflags "-p"
fi

VHOOKCFLAGS="-fPIC $CFLAGS"
enabled needmdynamicnopic && add_cflags -mdynamic-no-pic

# find if .align arg is power-of-two or not
if test $asmalign_pot = "unknown"; then
    asmalign_pot="no"
    echo 'asm (".align 3");' | check_cc && asmalign_pot="yes"
fi

enabled_any $ENCODER_LIST && enable encoders
enabled_any $DECODER_LIST && enable decoders
enabled_any $MUXER_LIST   && enable muxers
enabled_any $DEMUXER_LIST && enable demuxers

enabled_any pthreads beosthreads os2threads w32threads && enable threads

check_deps $CONFIG_LIST $HAVE_LIST $DECODER_LIST $ENCODER_LIST $PARSER_LIST \
    $DEMUXER_LIST $MUXER_LIST

enabled libogg    && append pkg_requires "ogg >= 1.1"
enabled libtheora && append pkg_requires "theora"
enabled libvorbis && append pkg_requires "vorbis vorbisenc"
enabled dc1394    && append pkg_requires "libraw1394"

echo "install prefix            $PREFIX"
echo "source path               $source_path"
echo "C compiler                $cc"
echo "make                      $make"
echo ".align is power-of-two    $asmalign_pot"
echo "ARCH                      $arch ($cpu)"
if test "$BUILDSUF" != ""; then
    echo "build suffix              $BUILDSUF"
fi
echo "big-endian                $bigendian"
if test $arch = "x86_32" -o $arch = "x86_64"; then
    echo "MMX enabled               $mmx"
    echo "CMOV enabled              $cmov"
    echo "CMOV is fast              $fast_cmov"
fi
if test $arch = "armv4l"; then
    echo "ARMv5TE enabled           $armv5te"
    echo "ARMv6 enabled             $armv6"
    echo "IWMMXT enabled            $iwmmxt"
fi
if test $arch = "mips"; then
    echo "MMI enabled               $mmi"
fi
if test $arch = "powerpc"; then
    echo "AltiVec enabled           $altivec"
    echo "dcbzl available           $dcbzl"
fi
echo "gprof enabled             $gprof"
echo "debug symbols             $debug"
echo "strip symbols             $dostrip"
echo "optimize                  $optimize"
echo "static                    $static"
echo "shared                    $shared"
echo "postprocessing support    $pp"
echo "software scaler enabled   $swscaler"
echo "video hooking             $vhook"
if enabled vhook; then
    echo "Imlib2 support            $imlib2"
    echo "FreeType support          $freetype2"
fi
echo "network support           $network"
if enabled network; then
    echo "IPv6 support              $ipv6"
fi
echo "threading support         $thread_type"
echo "SDL support               $sdl"
if enabled sdl_too_old; then
    echo "-> Your SDL version is too old - please upgrade to have FFplay/SDL support."
fi
echo "Sun medialib support      $mlib"
echo "AVISynth enabled          $avisynth"
echo "liba52 support            $liba52"
echo "liba52 dlopened           $liba52bin"
echo "libdts support            $libdts"
echo "libfaac enabled           $libfaac"
echo "libfaad enabled           $libfaad"
echo "faadbin enabled           $libfaadbin"
echo "libgsm enabled            $libgsm"
echo "libmp3lame enabled        $libmp3lame"
echo "libnut enabled            $libnut"
echo "libogg enabled            $libogg"
echo "libtheora enabled         $libtheora"
echo "libvorbis enabled         $libvorbis"
echo "x264 enabled              $x264"
echo "XviD enabled              $xvid"
echo "zlib enabled              $zlib"
echo "AMR-NB float support      $amr_nb"
echo "AMR-NB fixed support      $amr_nb_fixed"
echo "AMR-WB float support      $amr_wb"
echo "AMR-WB IF2 support        $amr_if2"
if disabled gpl; then
    echo "License: LGPL"
else
    echo "License: GPL"
fi

echo "Creating config.mak and config.h..."

echo "# Automatically generated by configure - do not modify!" > config.mak
echo "/* Automatically generated by configure - do not modify! */" > $TMPH
echo "#define FFMPEG_CONFIGURATION \"$FFMPEG_CONFIGURATION\"" >> $TMPH

echo "PREFIX=$PREFIX" >> config.mak
echo "prefix=\$(DESTDIR)\${PREFIX}" >> config.mak
echo "libdir=\$(DESTDIR)$libdir" >> config.mak
echo "shlibdir=\$(DESTDIR)$shlibdir" >> config.mak
echo "incdir=\$(DESTDIR)$incdir" >> config.mak
echo "bindir=\$(DESTDIR)$bindir" >> config.mak
echo "mandir=\$(DESTDIR)$mandir" >> config.mak
echo "MAKE=$make" >> config.mak
echo "CC=$cc" >> config.mak
echo "AR=$ar" >> config.mak
echo "RANLIB=$ranlib" >> config.mak
if enabled dostrip; then
    echo "STRIP=$strip" >> config.mak
else
    echo "STRIP=echo ignoring strip" >> config.mak
fi

echo "OPTFLAGS=$CFLAGS" >> config.mak
echo "VHOOKCFLAGS=$VHOOKCFLAGS">>config.mak
echo "LDFLAGS=$LDFLAGS" >> config.mak
echo "LDCONFIG=$LDCONFIG" >> config.mak
echo "FFSERVERLDFLAGS=$FFSERVERLDFLAGS" >> config.mak
echo "SHFLAGS=$SHFLAGS" >> config.mak
echo "VHOOKSHFLAGS=$VHOOKSHFLAGS" >> config.mak
echo "VHOOKLIBS=$VHOOKLIBS" >> config.mak
echo "LIBOBJFLAGS=$LIBOBJFLAGS" >> config.mak
echo "BUILD_STATIC=$static" >> config.mak
echo "BUILDSUF=$BUILDSUF" >> config.mak
echo "LIBPREF=$LIBPREF" >> config.mak
echo "LIBSUF=\${BUILDSUF}$LIBSUF" >> config.mak
if enabled static; then
  echo "LIB=$LIB" >> config.mak
else # Some Make complain if this variable does not exist.
  echo "LIB=" >> config.mak
fi
echo "SLIBPREF=$SLIBPREF" >> config.mak
echo "SLIBSUF=\${BUILDSUF}$SLIBSUF" >> config.mak
echo "EXESUF=\${BUILDSUF}$EXESUF" >> config.mak
echo "TARGET_OS=$targetos" >> config.mak

ucarch=`toupper $arch`
echo "TARGET_ARCH_${ucarch}=yes" >> config.mak
echo "#define ARCH_${ucarch} 1" >> $TMPH

# special cases
case "$arch" in
    x86_32|x86_64)
        echo "TARGET_ARCH_X86=yes" >> config.mak
        echo "#define ARCH_X86 1" >> $TMPH
        ;;
    powerpc)
        if test "$POWERPCMODE" = "64bits"; then
            echo "#define POWERPC_MODE_64BITS 1" >> $TMPH
        fi
        ;;
    sparc64)
        echo "TARGET_ARCH_SPARC=yes" >> config.mak
        echo "#define ARCH_SPARC 1" >> $TMPH
        ;;
esac

if enabled bigendian; then
  echo "WORDS_BIGENDIAN=yes" >> config.mak
  echo "#define WORDS_BIGENDIAN 1" >> $TMPH
fi
if enabled mmx; then
  echo "#define __CPU__ 586" >> $TMPH
fi

if enabled sdl; then
  echo "SDL_LIBS=`"${SDL_CONFIG}" --libs`" >> config.mak
  echo "SDL_CFLAGS=`"${SDL_CONFIG}" --cflags`" >> config.mak
fi
if enabled texi2html; then
  echo "BUILD_DOC=yes" >> config.mak
fi

sws_version=`grep '#define LIBSWSCALE_VERSION ' "$source_path/libswscale/swscale.h" | sed 's/[^0-9\.]//g'`
pp_version=`grep '#define LIBPOSTPROC_VERSION ' "$source_path/libpostproc/postprocess.h" | sed 's/[^0-9\.]//g'`
lavc_version=`grep '#define LIBAVCODEC_VERSION ' "$source_path/libavcodec/avcodec.h" | sed 's/[^0-9\.]//g'`
lavf_version=`grep '#define LIBAVFORMAT_VERSION ' "$source_path/libavformat/avformat.h" | sed 's/[^0-9\.]//g'`
lavu_version=`grep '#define LIBAVUTIL_VERSION ' "$source_path/libavutil/avutil.h" | sed 's/[^0-9\.]//g'`



if enabled shared; then
  echo "BUILD_SHARED=yes" >> config.mak
  echo "PIC=-fPIC -DPIC" >> config.mak
  echo "SPPMAJOR=${pp_version%%.*}" >> config.mak
  echo "SPPVERSION=$pp_version" >> config.mak
  echo "LAVCMAJOR=${lavc_version%%.*}" >> config.mak
  echo "LAVCVERSION=$lavc_version" >> config.mak
  echo "LAVFMAJOR=${lavf_version%%.*}" >> config.mak
  echo "LAVFVERSION=$lavf_version" >> config.mak
  echo "LAVUMAJOR=${lavu_version%%.*}" >> config.mak
  echo "LAVUVERSION=$lavu_version" >> config.mak
  echo "SWSMAJOR=${sws_version%%.*}" >> config.mak
  echo "SWSVERSION=$sws_version" >> config.mak
  echo "SLIBNAME=${SLIBNAME}" >> config.mak
  echo "SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}" >> config.mak
  echo "SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}" >> config.mak
  echo "SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}" >> config.mak
  echo "SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}" >> config.mak
fi
echo "LIB_INSTALL_EXTRA_CMD=${LIB_INSTALL_EXTRA_CMD}" >> config.mak
echo "EXTRALIBS=$extralibs" >> config.mak

print_config HAVE_   $TMPH config.mak $HAVE_LIST
print_config CONFIG_ $TMPH config.mak $CONFIG_LIST
print_config TARGET_ $TMPH config.mak $TARGET_LIST

if test "$targetos" = "Darwin"; then
  echo "#define CONFIG_DARWIN 1"  >> $TMPH
fi

echo "#define restrict $_restrict" >> $TMPH

if test "$optimize" = "small"; then
  echo "#define always_inline"  >> $TMPH
  echo "#define CONFIG_SMALL 1" >> $TMPH
fi

echo "SRC_PATH=\"$source_path\"" >> config.mak
echo "SRC_PATH_BARE=$source_path" >> config.mak
echo "BUILD_ROOT=\"$PWD\"" >> config.mak

if enabled amr_if2; then
  echo "AMR_CFLAGS=-DIF2=1" >> config.mak
fi

# Apparently it's not possible to portably echo a backslash.
if enabled asmalign_pot; then
  printf '#define ASMALIGN(ZEROBITS) ".align " #ZEROBITS "\\n\\t"\n' >> $TMPH
else
  printf '#define ASMALIGN(ZEROBITS) ".align 1<<" #ZEROBITS "\\n\\t"\n' >> $TMPH
fi


for codec in $DECODER_LIST $ENCODER_LIST $PARSER_LIST $DEMUXER_LIST $MUXER_LIST; do
    ucname="`toupper $codec`"
    config_name="CONFIG_$ucname"
    enabled_name="ENABLE_$ucname"
    if enabled $codec; then
        echo "#define $config_name 1" >> $TMPH
        echo "#define $enabled_name 1" >> $TMPH
        echo "$config_name=yes" >> config.mak
    else
        echo "#define $enabled_name 0" >> $TMPH
    fi
done

# Do not overwrite config.h if unchanged to avoid superfluous rebuilds.
if ! cmp -s $TMPH config.h; then
        mv -f $TMPH config.h
else
        echo "config.h is unchanged"
fi

rm -f $TMPO $TMPC $TMPE $TMPS $TMPH

# build tree in object directory if source path is different from current one
if enabled source_path_used; then
    DIRS="\
         doc \
         libavformat \
         libavcodec \
         libavcodec/alpha \
         libavcodec/armv4l \
         libavcodec/bfin \
         libavcodec/i386 \
         libavcodec/sparc \
         libavcodec/mlib \
         libavcodec/ppc \
         libavcodec/amr \
         libavcodec/amr_float \
         libavcodec/amrwb_float \