configure

shorten_decoder_select="golomb"
sonic_decoder_select="golomb"
sonic_encoder_select="golomb"
sonic_ls_encoder_select="golomb"
svq3_decoder_select="golomb"
svq3_decoder_suggest="zlib"
tiff_decoder_suggest="zlib"
tiff_encoder_suggest="zlib"
tscc_decoder_select="zlib"
vorbis_decoder_select="fft mdct"
vorbis_encoder_select="fft mdct"
wmav1_decoder_select="fft mdct"
wmav1_encoder_select="fft mdct"
wmav2_decoder_select="fft mdct"
wmav2_encoder_select="fft mdct"
wmv1_encoder_select="aandct"
wmv2_encoder_select="aandct"
zlib_decoder_select="zlib"
zlib_encoder_select="zlib"
zmbv_decoder_select="zlib"
zmbv_encoder_select="zlib"

# external libraries
libamr_nb_decoder_deps="libamr_nb"
libamr_nb_encoder_deps="libamr_nb"
libamr_wb_decoder_deps="libamr_wb"
libamr_wb_encoder_deps="libamr_wb"
libdirac_decoder_deps="libdirac !libschroedinger"
libdirac_encoder_deps="libdirac"
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"
libschroedinger_decoder_deps="libschroedinger"
libschroedinger_encoder_deps="libschroedinger"
libspeex_decoder_deps="libspeex"
libtheora_encoder_deps="libtheora"
libvorbis_encoder_deps="libvorbis"
libx264_encoder_deps="libx264"
libxvid_encoder_deps="libxvid"
mpeg4aac_decoder_deps="libfaad"
vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"

# 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"
dirac_demuxer_deps="dirac_parser"
dv1394_demuxer_deps="dv1394 dv_demuxer"
libdc1394_demuxer_deps="libdc1394"
libnut_demuxer_deps="libnut"
libnut_muxer_deps="libnut"
matroska_demuxer_suggest="zlib bzlib"
mov_demuxer_suggest="zlib"
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"
v4l_demuxer_deps="linux_videodev_h"
v4l2_demuxer_deps_any="linux_videodev2_h sys_videoio_h"
vfwcap_demuxer_deps="capCreateCaptureWindow"
vfwcap_demuxer_extralibs="-lvfw32"
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"

# filters
movie_filter_deps="avfilter_lavf"

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


# default parameters

logfile="config.err"

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

# toolchain
ar="ar"
cc_default="gcc"
host_cc_default="gcc"
ln_s="ln -sf"
nm_default="nm"
objformat="elf"
ranlib="ranlib"
strip="strip"
yasmexe="yasm"

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

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

# configurable options
enable debug
enable ffmpeg
enable ffplay
enable ffserver
enable ipv6
enable mpegaudio_hp
enable network
enable oldscaler
enable optimizations
enable protocols
enable static
enable stripping
vhook="default"

# build settings
add_cflags -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112
SHFLAGS='-shared -Wl,-soname,$$(@F)'
VHOOKSHFLAGS='$(SHFLAGS)'
FFSERVERLDFLAGS=-Wl,-E
LIBPREF="lib"
LIBSUF=".a"
FULLNAME='$(NAME)$(BUILDSUF)'
LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
SLIBPREF="lib"
SLIBSUF=".so"
SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
LIB_INSTALL_EXTRA_CMD='$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'

host_cflags='-O3 -g -Wall'
host_libs='-lm'

target_path='.'

# gcc stupidly only outputs the basename of targets with -MM, but we need the
# full relative path for objects in subdirectories for non-recursive Make.
DEPEND_CMD='$(CC) $(CFLAGS) -MM -MG $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," -e "s,\\([[:space:]]\\)\\(version\\.h\\),\\1\$$(BUILD_ROOT_REL)/\\2,"'

# find source path
source_path="`dirname \"$0\"`"
enable source_path_used
if test -z "$source_path" -o "$source_path" = "." ; then
    source_path="`pwd`"
    disable source_path_used
else
    source_path="`cd \"$source_path\"; pwd`"
    echo "$source_path" | grep -q '[[:blank:]]' &&
        die "Out of tree builds are impossible with whitespace in source path."
fi

FFMPEG_CONFIGURATION="$@"

find_things(){
    thing=$1
    pattern=$2
    file=$source_path/$3
    sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
}

ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
OUTDEV_LIST=$(find_things   muxer    _MUX     libavdevice/alldevices.c)
INDEV_LIST=$(find_things    demuxer  DEMUX    libavdevice/alldevices.c)
PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)

enable $ARCH_EXT_LIST \
       $DECODER_LIST \
       $ENCODER_LIST \
       $PARSER_LIST \
       $BSF_LIST \
       $DEMUXER_LIST \
       $MUXER_LIST \
       $FILTER_LIST \
       $PROTOCOL_LIST \
       $INDEV_LIST \
       $OUTDEV_LIST \

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

show_list() {
    suffix=_$1
    shift
    echo $* | sed s/$suffix//g | tr ' ' '\n' | sort
    exit 0
}

for opt do
    optval="${opt#*=}"
    case "$opt" in
    --extra-cflags=*) add_cflags "$optval"
    ;;
    --extra-ldflags=*) add_ldflags "$optval"
    ;;
    --extra-libs=*) add_extralibs "$optval"
    ;;
    --disable-devices) disable $INDEV_LIST $OUTDEV_LIST
    ;;
    --enable-debug=*) debuglevel="$optval"
    ;;
    --enable-*=*|--disable-*=*)
    eval `echo "$opt" | sed 's/=/-/;s/--/action=/;s/-/ thing=/;s/-/ name=/'`
    case "$thing" in
        encoder|decoder|muxer|demuxer|parser|bsf|protocol|filter) $action ${optval}_${thing} ;;
        *) die_unknown "$opt" ;;
    esac
    ;;
    --enable-?*|--disable-?*)
    eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
    if is_in $option $COMPONENT_LIST; then
        eval $action \$$(toupper ${option%s})_LIST
    elif is_in $option $CMDLINE_SELECT; then
        $action $option
    else
        die_unknown $opt
    fi
    ;;
    --list-*)
        NAME="${opt#--list-}"
        is_in $NAME $COMPONENT_LIST || die_unknown $opt
        NAME=${NAME%s}
        eval show_list $NAME \$$(toupper $NAME)_LIST
    ;;
    --help|-h) show_help
    ;;
    *)
    optname="${opt%%=*}"
    optname="${optname#--}"
    optname=$(echo "$optname" | sed 's/-/_/g')
    is_in $optname $CMDLINE_SET || die_unknown $opt
    eval $optname='$optval'
    ;;
    esac
done

disabled logging && logfile=/dev/null

echo "# $0 $@" > $logfile
set >> $logfile

test -n "$cross_prefix" && enable cross_compile

ar="${cross_prefix}${ar}"
cc_default="${cross_prefix}${cc_default}"
nm_default="${cross_prefix}${nm_default}"
ranlib="${cross_prefix}${ranlib}"
strip="${cross_prefix}${strip}"

set_default cc nm
enabled cross_compile || host_cc_default=$cc
set_default host_cc

# set temporary file name
: ${TMPDIR:=$TEMPDIR}
: ${TMPDIR:=$TMP}
: ${TMPDIR:=/tmp}

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

check_cflags -std=c99

case "$arch" in
    i386|i486|i586|i686|i86pc|BePC)
        arch="x86_32"
        enable fast_unaligned
    ;;
    x86_64|amd64)
        arch="x86_32"
        enable cmov
        enable fast_cmov
        enable fast_unaligned
        check_cc <<EOF && enable fast_64bit && arch="x86_64"
        int test[sizeof(char*) - 7];
EOF
    ;;
    arm|armv[4567]*l)
        arch="arm"
    ;;
    alpha)
        arch="alpha"
        enable fast_64bit
    ;;
    "Power Macintosh"|ppc|powerpc)
        arch="ppc"
        enable fast_unaligned
    ;;
    ppc64)
        arch="ppc"
        enable fast_64bit
        enable fast_unaligned
    ;;
    mips|mipsel|IP*)
        arch="mips"
    ;;
    mips64)
        arch="mips"
        enable fast_64bit
    ;;
    sun4u|sparc64)
        arch="sparc64"
        enable fast_64bit
    ;;
    sparc)
        arch="sparc"
    ;;
    sh4|sh)
        arch="sh4"
    ;;
    parisc|hppa)
        arch="parisc"
    ;;
    parisc64|hppa64)
        arch="parisc"
        enable fast_64bit
    ;;
    s390|s390x)
        arch="s390"
    ;;
    m68k)
        arch="m68k"
    ;;
    ia64)
        arch="ia64"
        enable fast_64bit
    ;;
    bfin)
        arch="bfin"
    ;;
    *)
        arch="unknown"
    ;;
esac

enable $arch
enabled_any x86_32 x86_64 && enable x86
enabled     sparc64       && enable sparc

# OS specific
case $target_os in
    beos|haiku|zeta)
        prefix_default="$HOME/config"
        # helps building libavcodec
        add_cflags "-DPIC -fomit-frame-pointer"
        # 3 gcc releases known for BeOS, each with ugly bugs
        gcc_version="`$cc -v 2>&1 | grep version | cut -d ' ' -f3-`"
        case "$gcc_version" in
          2.9-beos-991026*|2.9-beos-000224*) echo "R5/GG gcc"
            disable mmx
            ;;
          *20010315*) echo "BeBits gcc"
            add_cflags "-fno-expensive-optimizations"
            ;;
        esac
        SHFLAGS=-nostart
        # enable BeOS things
        enable audio_beos
        # no need for libm, but the inet stuff
        # Check for BONE
        # XXX: actually should check for NOT net_server
        if echo $BEINCLUDES | grep -q 'headers/be/bone'; then
            network_extralibs="-lbind -lsocket"
        else
            enable beos_netserver
            network_extralibs="-lnet"
        fi ;;
    sunos)
        FFSERVERLDFLAGS=""
        SHFLAGS='-shared -Wl,-h,$$(@F)'
        network_extralibs="-lsocket -lnsl"
        add_cflags -D__EXTENSIONS__
        ;;
    netbsd)
        oss_demuxer_extralibs="-lossaudio"
        oss_muxer_extralibs="-lossaudio"
        ;;
    openbsd)
        disable need_memalign
        LIBOBJFLAGS='$(PIC)'
        SHFLAGS='-shared'
        oss_demuxer_extralibs="-lossaudio"
        oss_muxer_extralibs="-lossaudio"
        ;;
    freebsd)
        disable need_memalign
        ;;
    bsd/os)
        osextralibs="-lpoll -lgnugetopt"
        strip="strip -d"
        ;;
    darwin)
        disable need_memalign
        SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR) -Wl,-read_only_relocs,suppress'
        VHOOKSHFLAGS='-dynamiclib -Wl,-single_module -flat_namespace -undefined suppress -Wl,-install_name,$(SHLIBDIR)/vhook/$$(@F)'
        strip="strip -x"
        FFLDFLAGS="-Wl,-dynamic,-search_paths_first"
        SLIBSUF=".dylib"
        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
        FFSERVERLDFLAGS=-Wl,-bind_at_load
        objformat="macho"
        enabled x86_64 && objformat="macho64"
        ;;
    mingw32*)
        target_os=mingw32
        LIBTARGET=i386
        if test $arch = x86_64; then
            disable need_memalign
            LIBTARGET=x64
        fi
        shlibdir_default="$bindir_default"
        VHOOKSHFLAGS='-shared -L$(BUILD_ROOT)/libavformat -L$(BUILD_ROOT)/libavcodec -L$(BUILD_ROOT)/libavutil'
        VHOOKLIBS='-lavformat$(BUILDSUF) -lavcodec$(BUILDSUF) -lavutil$(BUILDSUF) $(EXTRALIBS)'
        if enabled swscale; then
            VHOOKSHFLAGS="$VHOOKSHFLAGS -L\$(BUILD_ROOT)/libswscale"
            VHOOKLIBS="$VHOOKLIBS -lswscale\$(BUILDSUF)"
        fi
        disable ffserver
        SLIBPREF=""
        SLIBSUF=".dll"
        EXESUF=".exe"
        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
        SLIB_EXTRA_CMD='-lib /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
        SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
            install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"'
        SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
        SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.def) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
        objformat="win32"
        enable dos_paths
        check_cpp_condition _mingw.h "(__MINGW32_MAJOR_VERSION > 3) || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
            die "ERROR: MinGW runtime version must be >= 3.15."
        enabled_any avisynth vfwcap_demuxer &&
            { check_cpp_condition w32api.h "(__W32API_MAJOR_VERSION > 3) || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION >= 13)" ||
              die "ERROR: avisynth and vfwcap_demuxer require w32api version 3.13 or later."; }
        ;;
    cygwin*)
        target_os=cygwin
        shlibdir_default="$bindir_default"
        VHOOKSHFLAGS='-shared -L$(BUILD_ROOT)/libavformat -L$(BUILD_ROOT)/libavcodec -L$(BUILD_ROOT)/libavutil'
        VHOOKLIBS='-lavformat$(BUILDSUF) -lavcodec$(BUILDSUF) -lavutil$(BUILDSUF) $(EXTRALIBS)'
        if enabled swscale; then
            VHOOKSHFLAGS="$VHOOKSHFLAGS -L\$(BUILD_ROOT)/libswscale"
            VHOOKLIBS="$VHOOKLIBS -lswscale\$(BUILDSUF)"
        fi
        EXESUF=".exe"
        SLIBPREF="cyg"
        SLIBSUF=".dll"
        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
        SHFLAGS='-shared -Wl,--enable-auto-image-base'
        objformat="win32"
        enable dos_paths
        ;;
    *-dos|freedos|opendos)
        disable ffplay ffserver vhook
        disable $INDEV_LIST $OUTDEV_LIST
        network_extralibs="-lsocket"
        EXESUF=".exe"
        objformat="win32"
        enable dos_paths
        ;;
    linux)
        enable dv1394
        ;;
    irix*)
        target_os=irix
        ranlib="echo ignoring ranlib"
        ;;
    os/2*)
        strip="lxlite"
        ln_s="cp -f"
        EXESUF=".exe"
        FFLDFLAGS="-Zomf -Zbin-files -Zargs-wild -Zmap"
        SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
        FFSERVERLDFLAGS=""
        LIBSUF="_s.a"
        SLIBPREF=""
        SLIBSUF=".dll"
        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
        SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
          echo PROTMODE >> $(SUBDIR)$(NAME).def; \
          echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
          echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
          echo EXPORTS >> $(SUBDIR)$(NAME).def; \
          emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
        SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
          emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
        SLIB_INSTALL_EXTRA_CMD='install -m 644 $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib "$(LIBDIR)"'
        SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.a "$(LIBDIR)"/$(LIBPREF)$(NAME)_dll.lib'
        disable vhook
        enable dos_paths
        ;;
    interix)
        disable vhook
        ;;

    *)
        target_os="${target_os}-UNKNOWN"
        ;;
esac

set_default $PATHS_LIST

add_extralibs $osextralibs

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

# we need to build at least one lib type
if ! enabled_any 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

disabled static && LIBNAME=""

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 ! enabled 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" postproc
    die_gpl_disabled "libx264"                 libx264
    die_gpl_disabled "libxvidcore"             libxvid
    die_gpl_disabled "FAAD2"                   libfaad2
    die_gpl_disabled "The X11 grabber"         x11grab
    die_gpl_disabled "The software scaler"     swscale
fi

if ! enabled nonfree && enabled_any libamr_nb libamr_wb; then
    die "libamr is nonfree and --enable-nonfree is not specified."
fi

check_deps $ARCH_EXT_LIST

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

#Darwin CC versions
if test $target_os = darwin; then
    if $cc -v 2>&1 | grep -q xlc; then
        add_cflags "-qpdf2 -qlanglvl=extc99 -qmaxmem=-1 -qarch=auto -qtune=auto"
    else
        add_cflags "-pipe"
        check_cflags "-force_cpusubtype_ALL"
        check_cflags "-Wno-sign-compare"
        enabled shared || check_cflags -mdynamic-no-pic
    fi
fi

disabled optimizations || check_cflags -fomit-frame-pointer

# Add processor-specific flags
if test $cpu != "generic"; then
    warn_altivec(){
        $1 altivec && echo "WARNING: Tuning for $2 but AltiVec $1.";
    }
    case $cpu in
        601|ppc601|PowerPC601)
            add_cflags "-mcpu=601"
            warn_altivec enabled PPC601
        ;;
        603*|ppc603*|PowerPC603*)
            add_cflags "-mcpu=603"
            warn_altivec enabled PPC603
        ;;
        604*|ppc604*|PowerPC604*)
            add_cflags "-mcpu=604"
            warn_altivec enabled PPC604
        ;;
        G3|g3|75*|ppc75*|PowerPC75*)
            add_cflags "-mcpu=750 -mpowerpc-gfxopt"
            warn_altivec enabled PPC75x
        ;;
        G4|g4|745*|ppc745*|PowerPC745*)
            add_cflags "-mcpu=7450 -mpowerpc-gfxopt"
            warn_altivec disabled PPC745x
        ;;
        74*|ppc74*|PowerPC74*)
            add_cflags "-mcpu=7400 -mpowerpc-gfxopt"
            warn_altivec disabled PPC74xx
        ;;
        G5|g5|970|ppc970|PowerPC970|power4*|Power4*)
            add_cflags "-mcpu=970 -mpowerpc-gfxopt -mpowerpc64"
            warn_altivec disabled PPC970
            enable ppc64
        ;;
        Cell|CELL|cell)
            add_cflags "-mcpu=cell"
            warn_altivec disabled Cell
            enable ppc64
        ;;
        # targets that do NOT support conditional mov (cmov)
        i[345]86|pentium|pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
            add_cflags "-march=$cpu"
            disable cmov
        ;;
        # 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=$cpu"
            enable cmov
            enable fast_cmov
        ;;
        # targets that do support conditional mov but on which it's slow
        pentium4|pentium4m|prescott|nocona)
            add_cflags "-march=$cpu"
            enable cmov
            disable fast_cmov
        ;;
        sparc64)
            add_cflags "-mcpu=v9"
        ;;
        arm11*|cortex*)
            add_cflags "-mcpu=$cpu"
            enable fast_unaligned
        ;;
        armv*)
            add_cflags "-march=$cpu"
        ;;
        arm*)
            add_cflags "-mcpu=$cpu"
        ;;
        *)
            echo "WARNING: Unknown CPU \"$cpu\", ignored."
        ;;
    esac
fi

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

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

check_cc <<EOF || die "Symbol mangling check failed."
int ff_extern;
EOF
sym=$($nm -P -g $TMPO | grep ff_extern)
extern_prefix=${sym%%ff_extern*}

check_asm inline_asm '""'

if enabled x86; then
    # check whether EBP is available on x86
    # As 'i' is stored on the stack, this program will crash
    # if the base pointer is used to access it because the
    # base pointer is cleared in the inline assembly code.
    check_exec_crash <<EOF && enable ebp_available
    volatile int i=0;
    __asm__ volatile (
        "xorl %%ebp, %%ebp"
    ::: "%ebp");
    return i;
EOF

    # check wether EBX is available on x86
    check_asm ebx_available '"":::"%ebx"'

    # check whether binutils is new enough to compile SSSE3/MMX2
    enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
    enabled mmx2  && check_asm mmx2  '"movss %xmm0, %xmm0"'

    check_asm bswap '"bswap %%eax" ::: "%eax"'

    YASMFLAGS="-f $objformat -DARCH_$(toupper $arch)"
    enabled     x86_64        && append YASMFLAGS "-m amd64"
    enabled_all x86_64 shared && append YASMFLAGS "-DPIC"
    case "$objformat" in
        elf) enabled debug && append YASMFLAGS "-g dwarf2" ;;
        macho64)              append YASMFLAGS "-DPIC -DPREFIX" ;;
        *)                    append YASMFLAGS "-DPREFIX"  ;;
    esac
    check_yasm "pabsw xmm0, xmm0" && enable yasm
fi

# check for assembler specific support

if test $arch = "ppc"; then
    check_asm dcbzl '"dcbzl 0, 1"'
fi

# check for SIMD availability

# AltiVec flags: The FSF version of GCC differs from the Apple version
if enabled altivec; then
    check_cflags -maltivec -mabi=altivec &&
        { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
        check_cflags -faltivec

    # check if our compiler supports Motorola AltiVec C API
    check_cc <<EOF || disable altivec
$inc_altivec_h
int main(void) {
    vector signed int v1, v2, v3;
    v1 = vec_add(v2,v3);
    return 0;
}
EOF

    # check if our compiler supports braces for vector declarations
    check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
$inc_altivec_h
int main (void) { (vector int) {1}; return 0; }
EOF
fi

# We have to check if pld is a nop and disable it.
enabled arm     && check_asm pld     '"pld [r0]"'
enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
enabled armv6   && check_asm armv6   '"sadd16 r0, r0, r0"'
enabled armv6t2 && check_asm armv6t2 '"movt r0, #0"'
enabled armvfp  && check_asm armvfp  '"fadds s0, s0, s0"'
enabled iwmmxt  && check_asm iwmmxt  '"wunpckelub wr6, wr4"'
enabled mmi     && check_asm mmi     '"lq $2, 0($2)"'
enabled neon    && check_asm neon    '"vadd.i16 q0, q0, q0"'
enabled vis     && check_asm vis     '"pdist %f0, %f0, %f0"' -mcpu=ultrasparc

enabled vis && add_cflags "-mcpu=ultrasparc -mtune=ultrasparc"

# ---
# big/little-endian test
check_cc <<EOF || die "endian test failed"
unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
EOF
od -A n -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian

# ---
# check availability of some header files

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

check_func  fork
check_func  gethrtime
check_func  getrusage
check_func  inet_aton $network_extralibs
check_func  memalign
check_func  mkstemp
check_func_headers windows.h GetProcessTimes

check_header conio.h
check_header dlfcn.h
check_header malloc.h
check_header poll.h
check_header sys/mman.h
check_header sys/resource.h
check_header sys/select.h
check_header termios.h
check_header vdpau/vdpau.h
check_header vdpau/vdpau_x11.h
check_header X11/extensions/XvMClib.h

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

disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib

# 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_extralibs -pthread
    elif check_func pthread_create -pthreads; then
        add_cflags -pthreads
        add_extralibs -pthreads
    elif check_func pthread_create -lpthreadGC2; then
        add_extralibs -lpthreadGC2
    elif ! check_lib pthread.h pthread_create -lpthread; then
        die "ERROR: can't find pthreads library"
    fi
fi

for thread in $THREADS_LIST; do
    if enabled $thread; then
        test -n "$thread_type" &&
            die "ERROR: Only one thread type must be selected." ||
            thread_type="$thread"
    fi
done

check_lib math.h sin -lm

# test for C99 functions in math.h
for func in llrint lrint lrintf round roundf; do
    check_exec <<EOF && enable $func || disable $func
#include <math.h>
int main(void) { return ($func(3.999f) > 0)?0:1; }
EOF
done

# these are off by default, so fail if requested and not available
enabled avisynth   && require2 vfw32 "windows.h vfw.h" AVIFileInit -lvfw32
enabled libamr_nb  && require  libamrnb amrnb/interf_dec.h Speech_Decode_Frame_init -lamrnb -lm
enabled libamr_wb  && require  libamrwb amrwb/dec_if.h D_IF_init -lamrwb -lm
enabled libdirac   && add_cflags $(pkg-config --cflags dirac) &&
                      require  libdirac libdirac_decoder/dirac_parser.h dirac_decoder_init -ldirac_decoder &&
                      require  libdirac libdirac_encoder/dirac_encoder.h dirac_encoder_init -ldirac_encoder
enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
enabled libfaad    && require2 libfaad faad.h faacDecOpen -lfaad
enabled libgsm     && require  libgsm gsm.h gsm_create -lgsm
enabled libmp3lame && require  libmp3lame lame/lame.h lame_init -lmp3lame -lm
enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
enabled libschroedinger && add_cflags $(pkg-config --cflags schroedinger-1.0) &&
                           require libschroedinger schroedinger/schro.h schro_init $(pkg-config --libs schroedinger-1.0)
enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
enabled libtheora  && require  libtheora theora/theora.h theora_info_init -ltheora -logg
enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
enabled libx264    && require  libx264 x264.h x264_encoder_open -lx264 -lm &&
                      { check_cpp_condition x264.h "X264_BUILD >= 65" ||
                        die "ERROR: libx264 version must be >= 0.65."; }
enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
enabled mlib       && require  mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib

# libdc1394 check
if enabled libdc1394; then
    { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
        enable libdc1394_2; } ||
    { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
        enable libdc1394_1; } ||
    die "ERROR: No version of libdc1394 found "
fi


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

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

if test "$target_os" = cygwin -o "$target_os" = mingw32 && enabled_all static vhook ; then
    disable vhook
    echo
    echo "At the moment vhooks don't work on Cygwin or MinGW static builds."
    echo "Patches welcome."
    echo
fi

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

check_foo_config imlib2 imlib2 Imlib2.h imlib_load_font
check_foo_config freetype2 freetype ft2build.h FT_Init_FreeType

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

disable sdl_too_old
disable sdl
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_lib2 SDL.h SDL_Init; then
        _sdlversion=`"${SDL_CONFIG}" --version | sed 's/[^0-9]//g'`
        if test "$_sdlversion" -lt 121 ; then
            enable sdl_too_old
        else
            enable sdl
            check_cc $sdl_cflags <<EOF && enable sdl_video_size
#include <SDL.h>
int main(int argc, char **argv){
    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

##########################################
# Network check

if enabled network; then
    check_type "sys/types.h sys/socket.h" socklen_t
    # Prefer arpa/inet.h over winsock2
    if check_header arpa/inet.h ; then
        check_func closesocket
    elif check_header winsock2.h ; then
        network_extralibs="-lws2_32"
        check_type ws2tcpip.h socklen_t
        check_func_headers winsock2.h closesocket
    fi
fi

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

enabled network && enabled ipv6 && check_ld <<EOF && enable ipv6 || disable ipv6
#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

check_header linux/videodev.h