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d1845b4c84
FFmpeg/configure
Jeremy Kolb ba321adb94 Store license value in a variable for later use. 
patch by Jeremy Kolb, jkolb wsi com

Originally committed as revision 13183 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-16 16:12:55 +00:00

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#!/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 " --logfile=FILE log tests and output to FILE [config.err]"
echo " --disable-logging do not log configure debug information"
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]"
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-nonfree allow use of nonfree code, the resulting libav*"
echo " and ffmpeg will be unredistributable [default=no]"
echo " --enable-postproc enable GPLed postprocessing support [default=no]"
echo " --enable-swscale software scaler support [default=no]"
echo " --enable-avfilter video filter support (replaces vhook) [default=no]"
echo " --enable-avfilter-lavf video filters dependant on avformat [default=no]"
echo " --enable-beosthreads use BeOS threads [default=no]"
echo " --enable-os2threads use OS/2 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-mlib 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-libdirac enable Dirac support via libdirac [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-libschroedinger enable Dirac support via libschroedinger [default=no]"
echo " --enable-libtheora enable Theora encoding via libtheora [default=no]"
echo " --enable-libvorbis enable Vorbis encoding via libvorbis,"
echo " native implementation exists [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 [$cross_prefix]"
echo " --enable-cross-compile assume a cross-compiler is used"
echo " --target-os=OS compiler targets OS [$target_os]"
echo " --cc=CC use C compiler CC [$cc]"
echo " --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$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-mmx2 disable MMX2 usage"
echo " --disable-ssse3 disable SSSE3 usage"
echo " --disable-armv5te disable armv5te usage"
echo " --disable-armv6 disable armv6 usage"
echo " --disable-armvfp disable ARM VFP 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-bzlib disable bzlib [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-hardcoded-tables use hardcoded tables instead of runtime generation"
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 " --disable-devices disables all devices"
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 " --list-indevs show all available input devices"
echo " --list-outdevs show all available output devices"
echo
echo "Developer options (useful when working on FFmpeg itself):"
echo " --enable-gprof enable profiling with gprof [$gprof]"
echo " --disable-optimizations disable compiler optimizations"
echo " --enable-extra-warnings enable more compiler warnings"
echo " --disable-stripping 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
pr -n -t $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-user@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
EOF
if disabled logging; then
cat <<EOF
Rerun configure with logging enabled (do not use --disable-logging), and
include the log this produces with your report.
EOF
else
cat <<EOF
Include the log file "$logfile" produced by configure as this will help
solving the problem.
EOF
fi
rm -f $TMPC $TMPE $TMPH $TMPO $TMPS $TMPSH
exit 1
}
# Avoid locale weirdness, besides we really just want to translate ASCII.
toupper(){
echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
}
tolower(){
echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
}
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
if enabled $cfg; then
eval dep_extralibs="\$${cfg}_extralibs"
test -n "$dep_extralibs" && add_extralibs $dep_extralibs
fi
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 $TMPC
}
check_asm(){
log check_asm "$@"
name="$1"
asm="$2"
shift 2
check_cc "$@" <<EOF && enable $name || disable $name
int foo(void){ asm volatile($asm); }
EOF
}
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 "$@"
int main(void){ return 0; }
EOF
}
check_header(){
log check_header "$@"
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
filters
indevs
muxers
outdevs
parsers
protocols
"
CONFIG_LIST="
$COMPONENT_LIST
avfilter
avfilter_lavf
avisynth
beos_netserver
bzlib
ffmpeg
ffplay
ffserver
gpl
gprof
gray
hardcoded_tables
ipv6
liba52
liba52bin
libamr_nb
libamr_wb
libdc1394
libdirac
libfaac
libfaad
libfaadbin
libgsm
libmp3lame
libnut
libschroedinger
libtheora
libvorbis
libx264
libxvid
memalign_hack
mlib
mpegaudio_hp
network
nonfree
postproc
powerpc_perf
small
swscale
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
armvfp
iwmmxt
mmi
mmx
mmx2
ssse3
vis
'
HAVE_LIST="
$ARCH_EXT_LIST
$THREADS_LIST
altivec_h
arpa_inet_h
bswap
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
inline_asm
libdc1394_1
libdc1394_2
llrint
lrint
lrintf
machine_ioctl_bt848_h
machine_ioctl_meteor_h
malloc_h
memalign
mkstemp
pld
ppc64
round
roundf
sdl
sdl_video_size
socklen_t
soundcard_h
poll_h
sys_mman_h
sys_resource_h
sys_select_h
sys_soundcard_h
termios_h
threads
winsock2_h
"
CMDLINE_SELECT="
$ARCH_EXT_LIST
$CONFIG_LIST
$THREADS_LIST
cross_compile
debug
extra_warnings
logging
optimizations
shared
static
stripping
"
CMDLINE_SET='
arch
build_suffix
cc
cpu
cross_prefix
incdir
libdir
logfile
mandir
prefix
shlibdir
source_path
target_os
'
# code dependency declarations
# architecture extensions
altivec_deps="powerpc"
armv5te_deps="armv4l"
armv6_deps="armv4l"
armvfp_deps="armv4l"
iwmmxt_deps="armv4l"
mmi_deps="mips"
mmx_deps="x86"
mmx2_deps="x86 mmx"
ssse3_deps="x86"
vis_deps="sparc"
# decoders / encoders
ac3_decoder_deps="gpl"
dxa_decoder_deps="zlib"
flashsv_decoder_deps="zlib"
flashsv_encoder_deps="zlib"
mpeg_xvmc_decoder_deps="xvmc"
png_decoder_deps="zlib"
png_encoder_deps="zlib"
zmbv_decoder_deps="zlib"
zmbv_encoder_deps="zlib"
# external libraries
liba52_decoder_deps="liba52"
liba52bin_decoder_extralibs='$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"
libdirac_decoder_deps="libdirac"
libdirac_encoder_deps="libdirac"
libfaac_encoder_deps="libfaac"
libfaad_decoder_deps="libfaad"
libfaadbin_decoder_extralibs='$ldl'
libgsm_decoder_deps="libgsm"
libgsm_encoder_deps="libgsm"
libgsm_ms_decoder_deps="libgsm"
libgsm_ms_encoder_deps="libgsm"
libmp3lame_encoder_deps="libmp3lame"
libschroedinger_decoder_deps="libschroedinger"
libschroedinger_encoder_deps="libschroedinger"
libtheora_encoder_deps="libtheora"
libvorbis_encoder_deps="libvorbis"
libx264_encoder_deps="libx264"
libxvid_encoder_deps="libxvid"
mpeg4aac_decoder_deps="libfaad"
# demuxers / muxers
ac3_demuxer_deps="ac3_parser"
audio_beos_demuxer_deps="audio_beos"
audio_beos_demuxer_extralibs="-lmedia -lbe"
audio_beos_muxer_deps="audio_beos"
audio_beos_muxer_extralibs="-lmedia -lbe"
avisynth_demuxer_deps="avisynth"
bktr_demuxer_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
dirac_demuxer_deps="dirac_parser"
dv1394_demuxer_deps="dv1394 dv_demuxer"
libdc1394_demuxer_deps="libdc1394"
libnut_demuxer_deps="libnut"
libnut_muxer_deps="libnut"
mp3_demuxer_deps="mpegaudio_parser"
oss_demuxer_deps_any="soundcard_h sys_soundcard_h"
oss_muxer_deps_any="soundcard_h sys_soundcard_h"
redir_demuxer_deps="network"
rtp_muxer_deps="network rtp_protocol"
rtsp_demuxer_deps="sdp_demuxer"
sdp_demuxer_deps="rtp_protocol mpegts_demuxer"
v4l_demuxer_deps="linux_videodev_h"
v4l2_demuxer_deps="linux_videodev2_h"
vfwcap_demuxer_deps="capCreateCaptureWindow"
vfwcap_demuxer_extralibs="-lvfw32"
x11_grab_device_demuxer_deps="x11grab XShmCreateImage"
x11_grab_device_demuxer_extralibs="-lX11 -lXext"
# protocols
http_protocol_deps="network"
rtp_protocol_deps="udp_protocol"
tcp_protocol_deps="network"
udp_protocol_deps="network"
# filters
movie_filter_deps="avfilter_lavf"
# programs
ffplay_deps="sdl"
ffserver_deps="ffm_muxer rtp_protocol rtsp_demuxer"
ffserver_extralibs='$ldl'
vhook_extralibs='$ldl'
# default parameters
logfile="config.err"
# installation paths
prefix="/usr/local"
libdir='$(PREFIX)/lib'
shlibdir="$libdir"
incdir='$(PREFIX)/include'
mandir='$(PREFIX)/share/man'
bindir='$(PREFIX)/bin'
# toolchain
cc="gcc"
ar="ar"
nm="nm"
ranlib="ranlib"
strip="strip"
asmalign_pot="unknown"
ln_s="ln -sf"
# machine
arch=`uname -m`
cpu="generic"
# OS
target_os=$(tolower $(uname -s))
# libraries
enable bzlib
enable zlib
# configurable options
enable debug
enable ffmpeg
enable ffplay
enable ffserver
enable ipv6
enable mpegaudio_hp
enable network
enable optimizations
enable protocols
enable static
enable stripping
vhook="default"
# build settings
SHFLAGS='-shared -Wl,-soname,$$(@F)'
VHOOKSHFLAGS='$(SHFLAGS)'
LDLATEFLAGS='-Wl,-rpath-link,\$(BUILD_ROOT)/libavcodec -Wl,-rpath-link,\$(BUILD_ROOT)/libavformat -Wl,-rpath-link,\$(BUILD_ROOT)/libavutil'
FFSERVERLDFLAGS=-Wl,-E
LIBPREF="lib"
LIBSUF=".a"
FULLNAME='$(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)"'
# gcc stupidly only outputs the basename of targets with -MM
DEPEND_CMD='$(CC) $(CFLAGS) -MM -MG $< | sed "1s,^,$(@D)/,"'
# 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 >> $logfile
cc="${cross_prefix}${cc}"
ar="${cross_prefix}${ar}"
nm="${cross_prefix}${nm}"
ranlib="${cross_prefix}${ranlib}"
strip="${cross_prefix}${strip}"
# set temporary file name
if test ! -z "$TMPDIR" ; then
TMPDIR1="${TMPDIR}"
elif test ! -z "$TEMPDIR" ; then
TMPDIR1="${TEMPDIR}"
else
TMPDIR1="/tmp"
fi
TMPC="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.c"
TMPE="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}${EXESUF}"
TMPH="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.h"
TMPO="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.o"
TMPS="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.S"
TMPSH="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.sh"
case "$arch" in
i386|i486|i586|i686|i86pc|BePC)
arch="x86_32"
enable fast_unaligned
;;
x86_64|amd64)
arch="x86_32"
enable fast_unaligned
check_cc <<EOF && enable fast_64bit && arch="x86_64"
int test[sizeof(char*) - 7];
EOF
;;
# armv4l is a subset of armv[567]*l
arm|armv[4567]*l)
arch="armv4l"
;;
alpha)
arch="alpha"
enable fast_64bit
;;
"Power Macintosh"|ppc|powerpc)
arch="powerpc"
;;
ppc64)
arch="powerpc"
enable fast_64bit
;;
mips|mipsel|IP*)
arch="mips"
;;
sun4u|sparc64)
arch="sparc64"
enable fast_64bit
;;
sparc)
arch="sparc"
;;
sh4)
arch="sh4"
;;
parisc)
arch="parisc"
;;
parisc64)
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 $target_os in
beos|haiku|zeta)
prefix="$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,$$(@F)'
network_extralibs="-lsocket -lnsl"
;;
netbsd)
oss_demuxer_extralibs="-lossaudio"
oss_muxer_extralibs="-lossaudio"
;;
openbsd)
disable need_memalign
LIBOBJFLAGS='$(PIC)'
SHFLAGS='-shared'
SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF).$(LIBVERSION)'
SLIBNAME_WITH_VERSION='$(SLIBNAME)'
SLIBNAME_WITH_MAJOR='$(SLIBNAME)'
oss_demuxer_extralibs="-lossaudio"
oss_muxer_extralibs="-lossaudio"
;;
freebsd)
disable need_memalign
;;
bsd/os)
osextralibs="-lpoll -lgnugetopt"
strip="strip -d"
;;
darwin)
disable need_memalign
SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR) -Wl,-read_only_relocs,suppress'
VHOOKSHFLAGS='-dynamiclib -Wl,-single_module -flat_namespace -undefined suppress -Wl,-install_name,$(SHLIBDIR)/vhook/$$(@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
;;
mingw32*)
target_os=mingw32
LIBTARGET=i386
if test $arch = x86_64; then
disable need_memalign
LIBTARGET=x64
fi
shlibdir="$bindir"
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:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)'
SLIB_INSTALL_EXTRA_CMD='-install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"; \
install -m 644 $(SUBDIR)$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib) "$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.lib)"'
SLIB_UNINSTALL_EXTRA_CMD='rm -f "$(SHLIBDIR)/$(SLIBNAME:$(SLIBSUF)=.lib)"'
SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.def) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
;;
cygwin*)
target_os=cygwin
shlibdir="$bindir"
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'
;;
*-dos|freedos|opendos)
disable ffplay ffserver vhook
disable $INDEV_LIST $OUTDEV_LIST
network_extralibs="-lsocket"
EXESUF=".exe"
;;
linux)
LDLATEFLAGS="-Wl,--as-needed $LDLATEFLAGS"
enable dv1394
;;
irix*)
target_os=irix
ranlib="echo ignoring ranlib"
;;
os/2*)
strip="lxlite"
ln_s="cp -f"
EXESUF=".exe"
FFLDFLAGS="-Zomf -Zbin-files -Zargs-wild -Zmap"
SHFLAGS='$(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
;;
interix)
disable vhook
;;
*)
target_os="${target_os}-UNKNOWN"
;;
esac
add_extralibs $osextralibs
# Combine FFLDFLAGS and the LDFLAGS environment variable.
LDFLAGS="$FFLDFLAGS $LDFLAGS"
test -n "$cross_prefix" && enable cross_compile
# 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 "liba52" liba52
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 || add_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"
;;
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 $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 $TMPSH
# compiler sanity check
check_exec <<EOF
int main(void){ return 0; }
EOF
if test "$?" != 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"'
fi
# check for assembler specific support
if test $arch = "powerpc"; then
check_cc <<EOF && enable dcbzl
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 enabled altivec; then
check_cflags -maltivec -mabi=altivec &&
check_header altivec.h ||
check_cflags -faltivec
# check if our compiler supports Motorola AltiVec C API
enabled altivec_h &&
inc_altivec_h="#include <altivec.h>" ||
inc_altivec_h=
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
fi
# We have to check if pld is a nop and disable it.
enabled armv4l && check_asm pld '"pld [r0]"'
enabled armv5te && check_asm armv5te '"qadd r0, r0, r0"'
enabled armv6 && check_asm armv6 '"sadd16 r0, r0, r0"'
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 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_func2 windows.h GetProcessTimes
check_header byteswap.h
check_header conio.h
check_header dlfcn.h
check_header malloc.h
check_header sys/mman.h
check_header sys/resource.h
check_header termios.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
enabled zlib && check_lib zlib.h zlibVersion -lz || disable zlib
enabled bzlib && check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
# ffserver uses poll(),
# if it's not found we can emulate it using select().
if enabled ffserver; then
check_header poll.h
check_header sys/select.h
fi
# 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 $func
#define _ISOC9X_SOURCE 1
#include <math.h>
int main(void) { return ($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 liba52 && require liba52 a52dec/a52.h a52_init -la52
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 LAME 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 $(pkg-config --libs schroedinger-1.0)
enabled libtheora && require libtheora theora/theora.h theora_info_init -ltheora -logg
enabled libvorbis && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
enabled libx264 && require x264 x264.h x264_encoder_open -lx264 -lm
enabled libxvid && require Xvid xvid.h xvid_global -lxvidcore
enabled mlib && require mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib
# disable the native AC-3 decoder if liba52 is enabled
enabled liba52 && disable ac3_decoder
# disable the slower libdirac decoder if libschroedinger is enabled
enabled libschroedinger && enabled libdirac && disable libdirac_decoder
# libdc1394 check
if enabled libdc1394; then
{ check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
enable libdc1394_2; } ||
{ check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
enable libdc1394_1; } ||
die "ERROR: No version of libdc1394 found "
fi
_restrict=
for restrict_keyword in restrict __restrict__ __restrict; do
check_cc <<EOF && _restrict=$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 $sdl_cflags <<EOF && enable sdl_video_size
#include <SDL.h>
int main(int argc, char **argv){
const SDL_VideoInfo *vi = SDL_GetVideoInfo();
int w = vi->current_w;
return 0;
}
EOF
fi
fi
restore_flags
fi
texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
check_type sys/socket.h socklen_t
##########################################
# Network check
if enabled network; then
# Prefer arpa/inet.h over winsock2
if check_header arpa/inet.h ; then
check_func closesocket
elif check_header winsock2.h ; then
network_extralibs="-lws2_32"
check_type ws2tcpip.h socklen_t
check_func2 winsock2.h closesocket
fi
fi
##########################################
# IPv6 check
enabled network && enabled ipv6 && check_ld <<EOF && enable ipv6 || disable ipv6
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
int main(void) {
struct sockaddr_storage saddr;
struct ipv6_mreq mreq6;
getaddrinfo(0,0,0,0);
getnameinfo(0,0,0,0,0,0,0);
IN6_IS_ADDR_MULTICAST((const struct in6_addr *)0);
}
EOF
check_header linux/videodev.h
check_header linux/videodev2.h
check_func2 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
# check for ioctl_meteor.h, ioctl_bt848.h and alternatives
{ check_header dev/bktr/ioctl_meteor.h &&
check_header dev/bktr/ioctl_bt848.h; } ||
{ check_header machine/ioctl_meteor.h &&
check_header machine/ioctl_bt848.h; } ||
{ check_header dev/video/meteor/ioctl_meteor.h &&
check_header dev/video/bktr/ioctl_bt848.h; } ||
check_header dev/ic/bt8xx.h
check_header sys/soundcard.h
check_header soundcard.h
# deal with the X11 frame grabber
enabled x11grab &&
check_header X11/Xlib.h &&
check_header X11/extensions/XShm.h &&
check_func XOpenDisplay -lX11 &&
check_func XShmCreateImage -lX11 -lXext
enabled debug && add_cflags -g"$debuglevel"
# 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
check_cflags -Wcast-qual
check_cflags -Wwrite-strings
check_cflags -Wtype-limits
enabled extra_warnings && check_cflags -Winline
# add some linker flags
check_ldflags -Wl,--warn-common
check_ldflags $LDLATEFLAGS
check_ldflags -Wl,-Bsymbolic
if enabled small; then
check_cflags -Os # not all compilers support -Os
optimizations="small"
elif enabled optimizations; then
if $cc -v 2>&1 | grep -q xlc; then
add_cflags "-O5"
add_ldflags "-O5"
else
add_cflags "-O3"
fi
fi
check_cflags -fno-math-errno
check_cflags -fno-signed-zeros
# add some flags for Intel C Compiler
if $cc --version | grep -q Intel; then
# Just warnings, no remarks
check_cflags -w1
# -wd: Disable following warnings
# 144, 167, 556: -Wno-pointer-sign
# 10006: ignoring unknown option -fno-signed-zeros
# 10156: ignoring option '-W'; no argument required
check_cflags -wd144,167,556,10006,10156
# 11030: Warning unknown option --as-needed
# 10156: ignoring option '-export'; no argument required
check_ldflags -wd10156,11030
# Allow to compile with optimizations
check_ldflags -march=$cpu
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"
# Find out if the .align argument is a power of two or not.
if test $asmalign_pot = "unknown"; then
disable asmalign_pot
echo 'asm (".align 3");' | check_cc && enable asmalign_pot
fi
enabled_any $DECODER_LIST && enable decoders
enabled_any $ENCODER_LIST && enable encoders
enabled_any $BSF_LIST && enable bsfs
enabled_any $DEMUXER_LIST && enable demuxers
enabled_any $MUXER_LIST && enable muxers
enabled_any $FILTER_LIST && enable filters
enabled_any $INDEV_LIST && enable demuxers
enabled_any $OUTDEV_LIST && enable muxers
enabled_any $PROTOCOL_LIST && enable protocols
enabled_any $THREADS_LIST && enable threads
check_deps $CONFIG_LIST \
$HAVE_LIST \
$DECODER_LIST \
$ENCODER_LIST \
$PARSER_LIST \
$BSF_LIST \
$DEMUXER_LIST \
$MUXER_LIST \
$FILTER_LIST \
$INDEV_LIST \
$OUTDEV_LIST \
$PROTOCOL_LIST \
enabled libdc1394 && append pkg_requires "libraw1394"
enabled libdirac && append pkg_requires "dirac"
enabled libtheora && append pkg_requires "theora"
enabled libvorbis && append pkg_requires "vorbisenc"
echo "install prefix $prefix"
echo "source path $source_path"
echo "C compiler $cc"
echo ".align is power-of-two $asmalign_pot"
echo "ARCH $arch ($cpu)"
if test "$build_suffix" != ""; then
echo "build suffix $build_suffix"
fi
echo "big-endian ${bigendian-no}"
if test $arch = "x86_32" -o $arch = "x86_64"; then
echo "MMX enabled ${mmx-no}"
echo "CMOV enabled ${cmov-no}"
echo "CMOV is fast ${fast_cmov-no}"
echo "EBX available ${ebx_available-no}"
echo "EBP available ${ebp_available-no}"
fi
if test $arch = "armv4l"; then
echo "ARMv5TE enabled ${armv5te-no}"
echo "ARMv6 enabled ${armv6-no}"
echo "ARM VFP enabled ${armvfp-no}"
echo "IWMMXT enabled ${iwmmxt-no}"
fi
if test $arch = "mips"; then
echo "MMI enabled ${mmi-no}"
fi
if test $arch = "powerpc"; then
echo "AltiVec enabled ${altivec-no}"
echo "dcbzl available ${dcbzl-no}"
fi
echo "gprof enabled ${gprof-no}"
echo "debug symbols ${debug-no}"
echo "strip symbols ${stripping-no}"
echo "optimizations ${optimizations-no}"
echo "static ${static-no}"
echo "shared ${shared-no}"
echo "postprocessing support ${postproc-no}"
echo "software scaler enabled ${swscale-no}"
echo "new filter support ${avfilter-no}"
echo "filters using lavformat ${avfilter_lavf-no}"
echo "video hooking ${vhook-no}"
if enabled vhook; then
echo "Imlib2 support ${imlib2-no}"
echo "FreeType support ${freetype2-no}"
fi
echo "network support ${network-no}"
if enabled network; then
echo "IPv6 support ${ipv6-no}"
fi
echo "threading support ${thread_type-no}"
echo "SDL support ${sdl-no}"
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-no}"
echo "AVISynth enabled ${avisynth-no}"
echo "liba52 support ${liba52-no}"
echo "liba52 dlopened ${liba52bin-no}"
echo "libamr-nb support ${libamr_nb-no}"
echo "libamr-wb support ${libamr_wb-no}"
echo "libdc1394 support ${libdc1394-no}"
echo "libdirac enabled ${libdirac-no}"
echo "libfaac enabled ${libfaac-no}"
echo "libfaad enabled ${libfaad-no}"
echo "libfaad dlopened ${libfaadbin-no}"
echo "libgsm enabled ${libgsm-no}"
echo "libmp3lame enabled ${libmp3lame-no}"
echo "libnut enabled ${libnut-no}"
echo "libschroedinger enabled ${libschroedinger-no}"
echo "libtheora enabled ${libtheora-no}"
echo "libvorbis enabled ${libvorbis-no}"
echo "x264 enabled ${libx264-no}"
echo "XviD enabled ${libxvid-no}"
echo "zlib enabled ${zlib-no}"
echo "bzlib enabled ${bzlib-no}"
echo
for type in decoder encoder parser demuxer muxer protocol filter bsf indev outdev; do
echo "Enabled ${type}s:"
eval list=\$$(toupper $type)_LIST
for part in $list; do
enabled $part && echo ${part%_*}
done | sort | pr -3 -t
echo
done
license="LGPL"
if enabled nonfree; then
license="unredistributable"
elif enabled gpl; then
license="GPL"
fi
echo "License: $license"
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 "#ifndef FFMPEG_CONFIG_H" >> $TMPH
echo "#define FFMPEG_CONFIG_H" >> $TMPH
echo "#define FFMPEG_CONFIGURATION \"$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)$mandir" >> config.mak
echo "CC=$cc" >> config.mak
echo "AR=$ar" >> config.mak
echo "RANLIB=$ranlib" >> config.mak
echo "LN_S=$ln_s" >> config.mak
enabled stripping &&
echo "STRIP=$strip" >> config.mak ||
echo "STRIP=echo ignoring strip" >> config.mak
echo "OPTFLAGS=$CFLAGS" >> config.mak
echo "VHOOKCFLAGS=$VHOOKCFLAGS" >> config.mak
echo "LDFLAGS=$LDFLAGS" >> config.mak
echo "FFSERVERLDFLAGS=$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=$static" >> config.mak
echo "BUILDSUF=$build_suffix" >> config.mak
echo "FULLNAME=$FULLNAME" >> config.mak
echo "LIBPREF=$LIBPREF" >> config.mak
echo "LIBSUF=$LIBSUF" >> config.mak
echo "LIBNAME=$LIBNAME" >> config.mak
echo "SLIBPREF=$SLIBPREF" >> config.mak
echo "SLIBSUF=$SLIBSUF" >> config.mak
echo "EXESUF=$EXESUF" >> config.mak
echo "DEPEND_CMD=$DEPEND_CMD" >> config.mak
if enabled bigendian; then
echo "WORDS_BIGENDIAN=yes" >> config.mak
echo "#define WORDS_BIGENDIAN 1" >> $TMPH
fi
if enabled sdl; then
echo "SDL_LIBS=`"${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
get_version(){
name=$1
file=$source_path/$2
eval $(grep "#define ${name}_VERSION_M" "$file" | awk '{ print $2"="$3 }')
eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
lcname=$(tolower $name)
eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
}
get_version LIBSWSCALE libswscale/swscale.h
get_version LIBPOSTPROC libpostproc/postprocess.h
get_version LIBAVCODEC libavcodec/avcodec.h
get_version LIBAVDEVICE libavdevice/avdevice.h
get_version LIBAVFORMAT libavformat/avformat.h
get_version LIBAVUTIL libavutil/avutil.h
get_version LIBAVFILTER libavfilter/avfilter.h
if enabled shared; then
echo "BUILD_SHARED=yes" >> config.mak
echo "PIC=-fPIC -DPIC" >> config.mak
echo "LIBTARGET=${LIBTARGET}" >> config.mak
echo "SLIBNAME=${SLIBNAME}" >> config.mak
echo "SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}" >> config.mak
echo "SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}" >> config.mak
echo "SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}" >> config.mak
echo "SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}" >> config.mak
echo "SLIB_INSTALL_EXTRA_CMD=${SLIB_INSTALL_EXTRA_CMD}" >> config.mak
echo "SLIB_UNINSTALL_EXTRA_CMD=${SLIB_UNINSTALL_EXTRA_CMD}" >> config.mak
fi
echo "LIB_INSTALL_EXTRA_CMD=${LIB_INSTALL_EXTRA_CMD}" >> config.mak
echo "EXTRALIBS=$extralibs" >> config.mak
print_config ARCH_ $TMPH config.mak $ARCH_LIST
print_config HAVE_ $TMPH config.mak $HAVE_LIST
print_config CONFIG_ $TMPH config.mak $CONFIG_LIST \
$DECODER_LIST \
$ENCODER_LIST \
$PARSER_LIST \
$BSF_LIST \
$DEMUXER_LIST \
$MUXER_LIST \
$FILTER_LIST \
$PROTOCOL_LIST \
$INDEV_LIST \
$OUTDEV_LIST \
echo "#define restrict $_restrict" >> $TMPH
if enabled small; then
echo "#define av_always_inline" >> $TMPH
fi
echo "SRC_PATH=\"$source_path\"" >> config.mak
echo "SRC_PATH_BARE=$source_path" >> config.mak
echo "BUILD_ROOT=\"$PWD\"" >> config.mak
# Apparently it's not possible to portably echo a backslash.
enabled asmalign_pot &&
printf '#define ASMALIGN(ZEROBITS) ".align " #ZEROBITS "\\n\\t"\n' >> $TMPH ||
printf '#define ASMALIGN(ZEROBITS) ".align 1<<" #ZEROBITS "\\n\\t"\n' >> $TMPH
echo "#define EXTERN_PREFIX \"${extern_prefix}\"" >> $TMPH
echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
# Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
cmp -s $TMPH config.h &&
echo "config.h is unchanged" ||
mv -f $TMPH config.h
rm -f $TMPC $TMPE $TMPH $TMPO $TMPS $TMPSH
# build tree in object directory if source path is different from current one
if enabled source_path_used; then
DIRS="\
doc \
libavcodec \
libavcodec/alpha \
libavcodec/armv4l \
libavcodec/bfin \
libavcodec/i386 \
libavcodec/mlib \
libavcodec/ppc \
libavcodec/sh4 \
libavcodec/sparc \
libavdevice \
libavfilter \
libavformat \
libavutil \
libpostproc \
libswscale \
tests \
tools \
vhook \
"
FILES="\
Makefile \
common.mak \
subdir.mak \
doc/texi2pod.pl \
libavcodec/Makefile \
libavdevice/Makefile \
libavfilter/Makefile \
libavformat/Makefile \
libavutil/Makefile \
libpostproc/Makefile \
libswscale/Makefile \
"
for dir in $DIRS ; do
mkdir -p $dir
done
for f in $FILES ; do
$ln_s "$source_path/$f" $f
done
fi
# build pkg-config files
pkgconfig_generate(){
name=$1
shortname=${name#lib}
comment=$2
version=$3
libs=$4
requires=$5
cat <<EOF > $name.pc
prefix=$prefix
exec_prefix=\${prefix}
libdir=$libdir
includedir=$incdir
Name: $name
Description: $comment
Version: $version
Requires: $requires
Conflicts:
Libs: -L\${libdir} -l${shortname}
Libs.private: $libs
Cflags: -I\${includedir}
EOF
cat <<EOF > $name-uninstalled.pc
prefix=
exec_prefix=
libdir=\${pcfiledir}/$name
includedir=\${pcfiledir}
Name: $name
Description: $comment
Version: $version
Requires: $requires
Conflicts:
Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF}
Libs.private: $libs
Cflags: -I\${includedir}
EOF
}
pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION"
pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "$pkg_requires libavutil = $LIBAVUTIL_VERSION"
pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "$pkg_requires libavcodec = $LIBAVCODEC_VERSION"
pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$pkg_requires libavformat = $LIBAVFORMAT_VERSION"
enabled avfilter && \
pkgconfig_generate libavfilter "FFmpeg video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$pkg_requires libavutil = $LIBAVUTIL_VERSION"
enabled postproc && \
pkgconfig_generate libpostproc "FFmpeg post processing library" "$LIBPOSTPROC_VERSION"
if enabled swscale; then
pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "" "libavutil = $LIBAVUTIL_VERSION"
else
pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "" "$pkg_requires libavcodec = $LIBAVCODEC_VERSION"
apply libswscale.pc sed s/^Libs:.*$/Libs:/
fi
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