#!/bin/sh

#

# FFmpeg configure script

#

# Copyright (c) 2000-2002 Fabrice Bellard

# Copyright (c) 2005-2008 Diego Biurrun

# Copyright (c) 2005-2008 Mans Rullgard

#

# Prevent locale nonsense from breaking basic text processing.

LC_ALL=C

export LC_ALL

# 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

test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH

show_help(){

cat <<EOF

Usage: configure [options]

Options: [defaults in brackets after descriptions]

Help options:

--help print this message

--list-decoders show all available decoders

--list-encoders show all available encoders

--list-hwaccels show all available hardware accelerators

--list-demuxers show all available demuxers

--list-muxers show all available muxers

--list-parsers show all available parsers

--list-protocols show all available protocols

--list-bsfs show all available bitstream filters

--list-indevs show all available input devices

--list-outdevs show all available output devices

--list-filters show all available filters

Standard options:

--logfile=FILE log tests and output to FILE [config.log]

--disable-logging do not log configure debug information

--fatal-warnings fail if any configure warning is generated

--prefix=PREFIX install in PREFIX [$prefix]

--bindir=DIR install binaries in DIR [PREFIX/bin]

--datadir=DIR install data files in DIR [PREFIX/share/ffmpeg]

--docdir=DIR install documentation in DIR [PREFIX/share/doc/ffmpeg]

--libdir=DIR install libs in DIR [PREFIX/lib]

--shlibdir=DIR install shared libs in DIR [LIBDIR]

--incdir=DIR install includes in DIR [PREFIX/include]

--mandir=DIR install man page in DIR [PREFIX/share/man]

--pkgconfigdir=DIR install pkg-config files in DIR [LIBDIR/pkgconfig]

--enable-rpath use rpath to allow installing libraries in paths

not part of the dynamic linker search path

use rpath when linking programs [USE WITH CARE]

--install-name-dir=DIR Darwin directory name for installed targets

Licensing options:

--enable-gpl allow use of GPL code, the resulting libs

and binaries will be under GPL [no]

--enable-version3 upgrade (L)GPL to version 3 [no]

--enable-nonfree allow use of nonfree code, the resulting libs

and binaries will be unredistributable [no]

Configuration options:

--disable-static do not build static libraries [no]

--enable-shared build shared libraries [no]

--enable-small optimize for size instead of speed

--disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)

--enable-gray enable full grayscale support (slower color)

--disable-swscale-alpha disable alpha channel support in swscale

--disable-all disable building components, libraries and programs

--enable-raise-major increase major version numbers in sonames [no]

Program options:

--disable-programs do not build command line programs

--disable-ffmpeg disable ffmpeg build

--disable-ffplay disable ffplay build

--disable-ffprobe disable ffprobe build

--disable-ffserver disable ffserver build

Documentation options:

--disable-doc do not build documentation

--disable-htmlpages do not build HTML documentation pages

--disable-manpages do not build man documentation pages

--disable-podpages do not build POD documentation pages

--disable-txtpages do not build text documentation pages

Component options:

--disable-avdevice disable libavdevice build

--disable-avcodec disable libavcodec build

--disable-avformat disable libavformat build

--disable-swresample disable libswresample build

--disable-swscale disable libswscale build

--disable-postproc disable libpostproc build

--disable-avfilter disable libavfilter build

--enable-avresample enable libavresample build [no]

--disable-pthreads disable pthreads [autodetect]

--disable-w32threads disable Win32 threads [autodetect]

--disable-os2threads disable OS/2 threads [autodetect]

--disable-network disable network support [no]

--disable-dct disable DCT code

--disable-dwt disable DWT code

--disable-error-resilience disable error resilience code

--disable-lsp disable LSP code

--disable-lzo disable LZO decoder code

--disable-mdct disable MDCT code

--disable-rdft disable RDFT code

--disable-fft disable FFT code

--disable-faan disable floating point AAN (I)DCT code

--disable-pixelutils disable pixel utils in libavutil

Individual component options:

--disable-everything disable all components listed below

--disable-encoder=NAME disable encoder NAME

--enable-encoder=NAME enable encoder NAME

--disable-encoders disable all encoders

--disable-decoder=NAME disable decoder NAME

--enable-decoder=NAME enable decoder NAME

--disable-decoders disable all decoders

--disable-hwaccel=NAME disable hwaccel NAME

--enable-hwaccel=NAME enable hwaccel NAME

--disable-hwaccels disable all hwaccels

--disable-muxer=NAME disable muxer NAME

--enable-muxer=NAME enable muxer NAME

--disable-muxers disable all muxers

--disable-demuxer=NAME disable demuxer NAME

--enable-demuxer=NAME enable demuxer NAME

--disable-demuxers disable all demuxers

--enable-parser=NAME enable parser NAME

--disable-parser=NAME disable parser NAME

--disable-parsers disable all parsers

--enable-bsf=NAME enable bitstream filter NAME

--disable-bsf=NAME disable bitstream filter NAME

--disable-bsfs disable all bitstream filters

--enable-protocol=NAME enable protocol NAME

--disable-protocol=NAME disable protocol NAME

--disable-protocols disable all protocols

--enable-indev=NAME enable input device NAME

--disable-indev=NAME disable input device NAME

--disable-indevs disable input devices

--enable-outdev=NAME enable output device NAME

--disable-outdev=NAME disable output device NAME

--disable-outdevs disable output devices

--disable-devices disable all devices

--enable-filter=NAME enable filter NAME

--disable-filter=NAME disable filter NAME

--disable-filters disable all filters

External library support:

Using any of the following switches will allow FFmpeg to link to the

corresponding external library. All the components depending on that library

will become enabled, if all their other dependencies are met and they are not

explicitly disabled. E.g. --enable-libwavpack will enable linking to

libwavpack and allow the libwavpack encoder to be built, unless it is

specifically disabled with --disable-encoder=libwavpack.

Note that only the system libraries are auto-detected. All the other external

libraries must be explicitly enabled.

Also note that the following help text describes the purpose of the libraries

themselves, not all their features will necessarily be usable by FFmpeg.

--enable-avisynth enable reading of AviSynth script files [no]

--disable-bzlib disable bzlib [autodetect]

--enable-chromaprint enable audio fingerprinting with chromaprint [no]

--enable-frei0r enable frei0r video filtering [no]

--enable-gcrypt enable gcrypt, needed for rtmp(t)e support

if openssl, librtmp or gmp is not used [no]

--enable-gmp enable gmp, needed for rtmp(t)e support

if openssl or librtmp is not used [no]

--enable-gnutls enable gnutls, needed for https support

if openssl is not used [no]

--disable-iconv disable iconv [autodetect]

--enable-jni enable JNI support [no]

--enable-ladspa enable LADSPA audio filtering [no]

--enable-libass enable libass subtitles rendering,

needed for subtitles and ass filter [no]

--enable-libbluray enable BluRay reading using libbluray [no]

--enable-libbs2b enable bs2b DSP library [no]

--enable-libcaca enable textual display using libcaca [no]

--enable-libcelt enable CELT decoding via libcelt [no]

--enable-libcdio enable audio CD grabbing with libcdio [no]

--enable-libdc1394 enable IIDC-1394 grabbing using libdc1394

and libraw1394 [no]

--enable-libfdk-aac enable AAC de/encoding via libfdk-aac [no]

--enable-libflite enable flite (voice synthesis) support via libflite [no]

--enable-libfontconfig enable libfontconfig, useful for drawtext filter [no]

--enable-libfreetype enable libfreetype, needed for drawtext filter [no]

--enable-libfribidi enable libfribidi, improves drawtext filter [no]

--enable-libgme enable Game Music Emu via libgme [no]

--enable-libgsm enable GSM de/encoding via libgsm [no]

--enable-libiec61883 enable iec61883 via libiec61883 [no]

--enable-libilbc enable iLBC de/encoding via libilbc [no]

--enable-libkvazaar enable HEVC encoding via libkvazaar [no]

--enable-libmodplug enable ModPlug via libmodplug [no]

--enable-libmp3lame enable MP3 encoding via libmp3lame [no]

--enable-libnut enable NUT (de)muxing via libnut,

native (de)muxer exists [no]

--enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]

--enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]

--enable-libopencv enable video filtering via libopencv [no]

--enable-libopenh264 enable H.264 encoding via OpenH264 [no]

--enable-libopenjpeg enable JPEG 2000 de/encoding via OpenJPEG [no]

--enable-libopenmpt enable decoding tracked files via libopenmpt [no]

--enable-libopus enable Opus de/encoding via libopus [no]

--enable-libpulse enable Pulseaudio input via libpulse [no]

--enable-librubberband enable rubberband needed for rubberband filter [no]

--enable-librtmp enable RTMP[E] support via librtmp [no]

--enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]

--enable-libshine enable fixed-point MP3 encoding via libshine [no]

--enable-libsmbclient enable Samba protocol via libsmbclient [no]

--enable-libsnappy enable Snappy compression, needed for hap encoding [no]

--enable-libsoxr enable Include libsoxr resampling [no]

--enable-libspeex enable Speex de/encoding via libspeex [no]

--enable-libssh enable SFTP protocol via libssh [no]

--enable-libtesseract enable Tesseract, needed for ocr filter [no]

--enable-libtheora enable Theora encoding via libtheora [no]

--enable-libtwolame enable MP2 encoding via libtwolame [no]

--enable-libv4l2 enable libv4l2/v4l-utils [no]

--enable-libvidstab enable video stabilization using vid.stab [no]

--enable-libvo-amrwbenc enable AMR-WB encoding via libvo-amrwbenc [no]

--enable-libvorbis enable Vorbis en/decoding via libvorbis,

native implementation exists [no]

--enable-libvpx enable VP8 and VP9 de/encoding via libvpx [no]

--enable-libwavpack enable wavpack encoding via libwavpack [no]

--enable-libwebp enable WebP encoding via libwebp [no]

--enable-libx264 enable H.264 encoding via x264 [no]

--enable-libx265 enable HEVC encoding via x265 [no]

--enable-libxavs enable AVS encoding via xavs [no]

--enable-libxcb enable X11 grabbing using XCB [autodetect]

--enable-libxcb-shm enable X11 grabbing shm communication [autodetect]

--enable-libxcb-xfixes enable X11 grabbing mouse rendering [autodetect]

--enable-libxcb-shape enable X11 grabbing shape rendering [autodetect]

--enable-libxvid enable Xvid encoding via xvidcore,

native MPEG-4/Xvid encoder exists [no]

--enable-libzimg enable z.lib, needed for zscale filter [no]

--enable-libzmq enable message passing via libzmq [no]

--enable-libzvbi enable teletext support via libzvbi [no]

--disable-lzma disable lzma [autodetect]

--enable-decklink enable Blackmagic DeckLink I/O support [no]

--enable-mediacodec enable Android MediaCodec support [no]

--enable-netcdf enable NetCDF, needed for sofalizer filter [no]

--enable-openal enable OpenAL 1.1 capture support [no]

--enable-opencl enable OpenCL code

--enable-opengl enable OpenGL rendering [no]

--enable-openssl enable openssl, needed for https support

if gnutls is not used [no]

--disable-schannel disable SChannel SSP, needed for TLS support on

Windows if openssl and gnutls are not used [autodetect]

--disable-sdl2 disable sdl2 [autodetect]

--disable-securetransport disable Secure Transport, needed for TLS support

on OSX if openssl and gnutls are not used [autodetect]

--enable-x11grab enable X11 grabbing (legacy) [no]

--disable-xlib disable xlib [autodetect]

--disable-zlib disable zlib [autodetect]

The following libraries provide various hardware acceleration features:

--disable-audiotoolbox disable Apple AudioToolbox code [autodetect]

--disable-cuda disable dynamically linked Nvidia CUDA code [autodetect]

--disable-cuvid disable Nvidia CUVID support [autodetect]

--disable-d3d11va disable Microsoft Direct3D 11 video acceleration code [autodetect]

--disable-dxva2 disable Microsoft DirectX 9 video acceleration code [autodetect]

--enable-libmfx enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]

--enable-libnpp enable Nvidia Performance Primitives-based code [no]

--enable-mmal enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]

--disable-nvenc disable Nvidia video encoding code [autodetect]

--enable-omx enable OpenMAX IL code [no]

--enable-omx-rpi enable OpenMAX IL code for Raspberry Pi [no]

--disable-vaapi disable Video Acceleration API (mainly Unix/Intel) code [autodetect]

--disable-vda disable Apple Video Decode Acceleration code [autodetect]

--disable-vdpau disable Nvidia Video Decode and Presentation API for Unix code [autodetect]

--disable-videotoolbox disable VideoToolbox code [autodetect]

Toolchain options:

--arch=ARCH select architecture [$arch]

--cpu=CPU select the minimum required CPU (affects

instruction selection, may crash on older CPUs)

--cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]

--progs-suffix=SUFFIX program name suffix []

--enable-cross-compile assume a cross-compiler is used

--sysroot=PATH root of cross-build tree

--sysinclude=PATH location of cross-build system headers

--target-os=OS compiler targets OS [$target_os]

--target-exec=CMD command to run executables on target

--target-path=DIR path to view of build directory on target

--target-samples=DIR path to samples directory on target

--tempprefix=PATH force fixed dir/prefix instead of mktemp for checks

--toolchain=NAME set tool defaults according to NAME

--nm=NM use nm tool NM [$nm_default]

--ar=AR use archive tool AR [$ar_default]

--as=AS use assembler AS [$as_default]

--ln_s=LN_S use symbolic link tool LN_S [$ln_s_default]

--strip=STRIP use strip tool STRIP [$strip_default]

--windres=WINDRES use windows resource compiler WINDRES [$windres_default]

--yasmexe=EXE use yasm-compatible assembler EXE [$yasmexe_default]

--cc=CC use C compiler CC [$cc_default]

--cxx=CXX use C compiler CXX [$cxx_default]

--objcc=OCC use ObjC compiler OCC [$cc_default]

--dep-cc=DEPCC use dependency generator DEPCC [$cc_default]

--ld=LD use linker LD [$ld_default]

--pkg-config=PKGCONFIG use pkg-config tool PKGCONFIG [$pkg_config_default]

--pkg-config-flags=FLAGS pass additional flags to pkgconf []

--ranlib=RANLIB use ranlib RANLIB [$ranlib_default]

--doxygen=DOXYGEN use DOXYGEN to generate API doc [$doxygen_default]

--host-cc=HOSTCC use host C compiler HOSTCC

--host-cflags=HCFLAGS use HCFLAGS when compiling for host

--host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host

--host-ld=HOSTLD use host linker HOSTLD

--host-ldflags=HLDFLAGS use HLDFLAGS when linking for host

--host-libs=HLIBS use libs HLIBS when linking for host

--host-os=OS compiler host OS [$target_os]

--extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]

--extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]

--extra-objcflags=FLAGS add FLAGS to OBJCFLAGS [$CFLAGS]

--extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]

--extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]

--extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]

--extra-libs=ELIBS add ELIBS [$ELIBS]

--extra-version=STRING version string suffix []

--optflags=OPTFLAGS override optimization-related compiler flags

--build-suffix=SUFFIX library name suffix []

--enable-pic build position-independent code

--enable-thumb compile for Thumb instruction set

--enable-lto use link-time optimization

--env="ENV=override" override the environment variables

Advanced options (experts only):

--malloc-prefix=PREFIX prefix malloc and related names with PREFIX

--custom-allocator=NAME use a supported custom allocator

--disable-symver disable symbol versioning

--enable-hardcoded-tables use hardcoded tables instead of runtime generation

--disable-safe-bitstream-reader

disable buffer boundary checking in bitreaders

(faster, but may crash)

--enable-memalign-hack emulate memalign, interferes with memory debuggers

--sws-max-filter-size=N the max filter size swscale uses [$sws_max_filter_size_default]

Optimization options (experts only):

--disable-asm disable all assembly optimizations

--disable-altivec disable AltiVec optimizations

--disable-vsx disable VSX optimizations

--disable-power8 disable POWER8 optimizations

--disable-amd3dnow disable 3DNow! optimizations

--disable-amd3dnowext disable 3DNow! extended optimizations

--disable-mmx disable MMX optimizations

--disable-mmxext disable MMXEXT optimizations

--disable-sse disable SSE optimizations

--disable-sse2 disable SSE2 optimizations

--disable-sse3 disable SSE3 optimizations

--disable-ssse3 disable SSSE3 optimizations

--disable-sse4 disable SSE4 optimizations

--disable-sse42 disable SSE4.2 optimizations

--disable-avx disable AVX optimizations

--disable-xop disable XOP optimizations

--disable-fma3 disable FMA3 optimizations

--disable-fma4 disable FMA4 optimizations

--disable-avx2 disable AVX2 optimizations

--disable-aesni disable AESNI optimizations

--disable-armv5te disable armv5te optimizations

--disable-armv6 disable armv6 optimizations

--disable-armv6t2 disable armv6t2 optimizations

--disable-vfp disable VFP optimizations

--disable-neon disable NEON optimizations

--disable-inline-asm disable use of inline assembly

--disable-yasm disable use of nasm/yasm assembly

--disable-mipsdsp disable MIPS DSP ASE R1 optimizations

--disable-mipsdspr2 disable MIPS DSP ASE R2 optimizations

--disable-msa disable MSA optimizations

--disable-mipsfpu disable floating point MIPS optimizations

--disable-mmi disable Loongson SIMD optimizations

--disable-fast-unaligned consider unaligned accesses slow

Developer options (useful when working on FFmpeg itself):

--disable-debug disable debugging symbols

--enable-debug=LEVEL set the debug level [$debuglevel]

--disable-optimizations disable compiler optimizations

--enable-extra-warnings enable more compiler warnings

--disable-stripping disable stripping of executables and shared libraries

--assert-level=level 0(default), 1 or 2, amount of assertion testing,

2 causes a slowdown at runtime.

--enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data

--valgrind=VALGRIND run "make fate" tests through valgrind to detect memory

leaks and errors, using the specified valgrind binary.

Cannot be combined with --target-exec

--enable-ftrapv Trap arithmetic overflows

--samples=PATH location of test samples for FATE, if not set use

\$FATE_SAMPLES at make invocation time.

--enable-neon-clobber-test check NEON registers for clobbering (should be

used only for debugging purposes)

--enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;

should be used only for debugging purposes)

--enable-random randomly enable/disable components

--disable-random

--enable-random=LIST randomly enable/disable specific components or

--disable-random=LIST component groups. LIST is a comma-separated list

of NAME[:PROB] entries where NAME is a component

(group) and PROB the probability associated with

NAME (default 0.5).

--random-seed=VALUE seed value for --enable/disable-random

--disable-valgrind-backtrace do not print a backtrace under Valgrind

(only applies to --disable-optimizations builds)

NOTE: Object files are built at the place where configure is launched.

EOF

exit 0

}

quotes='""'

if test -t 1 && which tput >/dev/null 2>&1; then

ncolors=$(tput colors)

if test -n "$ncolors" && test $ncolors -ge 8; then

bold_color=$(tput bold)

warn_color=$(tput setaf 3)

error_color=$(tput setaf 1)

reset_color=$(tput sgr0)

fi

# 72 used instead of 80 since that's the default of pr

ncols=$(tput cols)

fi

: ${ncols:=72}

log(){

echo "$@" >> $logfile

}

log_file(){

log BEGIN $1

pr -n -t $1 >> $logfile

log END $1

}

warn(){

log "WARNING: $*"

WARNINGS="${WARNINGS}WARNING: $*\n"

}

die(){

log "$@"

echo "$error_color$bold_color$@$reset_color"

cat <<EOF

If you think configure made a mistake, make sure you are using the latest

version from Git. If the latest version fails, report the problem to the

[email protected] 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

solve the problem.

EOF

fi

exit 1

}

# Avoid locale weirdness, besides we really just want to translate ASCII.

toupper(){

echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ

}

tolower(){

echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz

}

c_escape(){

echo "$*" | sed 's/["\\]/\\\0/g'

}

sh_quote(){

v=$(echo "$1" | sed "s/'/'\\\\''/g")

test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"

echo "$v"

}

cleanws(){

echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'

}

filter(){

pat=$1

shift

for v; do

eval "case $v in $pat) echo $v ;; esac"

done

}

filter_out(){

pat=$1

shift

for v; do

eval "case $v in $pat) ;; *) echo $v ;; esac"

done

}

map(){

m=$1

shift

for v; do eval $m; done

}

add_suffix(){

suffix=$1

shift

for v; do echo ${v}${suffix}; done

}

set_all(){

value=$1

shift

for var in $*; do

eval $var=$value

done

}

set_weak(){

value=$1

shift

for var; do

eval : \${$var:=$value}

done

}

sanitize_var_name(){

echo $@ | sed 's/[^A-Za-z0-9_]/_/g'

}

set_safe(){

var=$1

shift

eval $(sanitize_var_name "$var")='$*'

}

get_safe(){

eval echo \$$(sanitize_var_name "$1")

}

pushvar(){

for pvar in $*; do

eval level=\${${pvar}_level:=0}

eval ${pvar}_${level}="\$$pvar"

eval ${pvar}_level=$(($level+1))

done

}

popvar(){

for pvar in $*; do

eval level=\${${pvar}_level:-0}

test $level = 0 && continue

eval level=$(($level-1))

eval $pvar="\${${pvar}_${level}}"

eval ${pvar}_level=$level

eval unset ${pvar}_${level}

done

}

request(){

for var in $*; do

eval ${var}_requested=yes

eval $var=

done

}

enable(){

set_all yes $*

}

disable(){

set_all no $*

}

enable_weak(){

set_weak yes $*

}

disable_weak(){

set_weak no $*

}

enable_safe(){

for var; do

enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')

done

}

disable_safe(){

for var; do

disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')

done

}

do_enable_deep(){

for var; do

enabled $var && continue

eval sel="\$${var}_select"

eval sgs="\$${var}_suggest"

pushvar var sgs

enable_deep $sel

popvar sgs

enable_deep_weak $sgs

popvar var

done

}

enable_deep(){

do_enable_deep $*

enable $*

}

enable_deep_weak(){

for var; do

disabled $var && continue

pushvar var

do_enable_deep $var

popvar var

enable_weak $var

done

}

requested(){

test "${1#!}" = "$1" && op='=' || op=!=

eval test "x\$${1#!}_requested" $op "xyes"

}

enabled(){

test "${1#!}" = "$1" && op='=' || op=!=

eval test "x\$${1#!}" $op "xyes"

}

disabled(){

test "${1#!}" = "$1" && op='=' || op=!=

eval test "x\$${1#!}" $op "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

return 1

}

set_default(){

for opt; do

eval : \${$opt:=\$${opt}_default}

done

}

is_in(){

value=$1

shift

for var in $*; do

[ $var = $value ] && return 0

done

return 1

}

do_check_deps(){

for cfg; do

cfg="${cfg#!}"

enabled ${cfg}_checking && die "Circular dependency for $cfg."

disabled ${cfg}_checking && continue

enable ${cfg}_checking

append allopts $cfg

eval dep_all="\$${cfg}_deps"

eval dep_any="\$${cfg}_deps_any"

eval dep_sel="\$${cfg}_select"

eval dep_sgs="\$${cfg}_suggest"

eval dep_ifa="\$${cfg}_if"

eval dep_ifn="\$${cfg}_if_any"

pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn

do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn

popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn

[ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }

[ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }

enabled_all $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }

enabled_any $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }

disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }

if enabled $cfg; then

enable_deep $dep_sel

enable_deep_weak $dep_sgs

fi

disable ${cfg}_checking

done

}

check_deps(){

unset allopts

do_check_deps "$@"

for cfg in $allopts; do

enabled $cfg || continue

eval dep_extralibs="\$${cfg}_extralibs"

test -n "$dep_extralibs" && add_extralibs $dep_extralibs

done

}

print_config(){

pfx=$1

files=$2

shift 2

map 'eval echo "$v \${$v:-no}"' "$@" |

awk "BEGIN { split(\"$files\", files) }

{

c = \"$pfx\" toupper(\$1);

v = \$2;

sub(/yes/, 1, v);

sub(/no/, 0, v);

for (f in files) {

file = files[f];

if (file ~ /\\.h\$/) {

printf(\"#define %s %d\\n\", c, v) >>file;

} else if (file ~ /\\.asm\$/) {

printf(\"%%define %s %d\\n\", c, v) >>file;

} else if (file ~ /\\.mak\$/) {

n = -v ? \"\" : \"!\";

printf(\"%s%s=yes\\n\", n, c) >>file;

} else if (file ~ /\\.texi\$/) {

pre = -v ? \"\" : \"@c \";

yesno = \$2;

c2 = tolower(c);

gsub(/_/, \"-\", c2);

printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;

}

}

}"

}

print_enabled(){

suf=$1

shift

for v; do

enabled $v && printf "%s\n" ${v%$suf}

done

}

append(){

var=$1

shift

eval "$var=\"\$$var $*\""

}

prepend(){

var=$1

shift

eval "$var=\"$* \$$var\""

}

unique(){

var=$1

uniq_list=""

for tok in $(eval echo \$$var); do

uniq_list="$(filter_out $tok $uniq_list) $tok"

done

eval "$var=\"${uniq_list}\""

}

add_cppflags(){

append CPPFLAGS "$@"

}

add_cflags(){

append CFLAGS $($cflags_filter "$@")

}

add_cxxflags(){

append CXXFLAGS $($cflags_filter "$@")

}

add_asflags(){

append ASFLAGS $($asflags_filter "$@")

}

add_objcflags(){

append OBJCFLAGS $($objcflags_filter "$@")

}

add_ldflags(){

append LDFLAGS $($ldflags_filter "$@")

}

add_ldexeflags(){

append LDEXEFLAGS $($ldflags_filter "$@")

}

add_ldlibflags(){

append LDLIBFLAGS $($ldflags_filter "$@")

}

add_stripflags(){

append ASMSTRIPFLAGS "$@"

}

add_extralibs(){

prepend extralibs $($ldflags_filter "$@")

}

add_host_cppflags(){

append host_cppflags "$@"

}

add_host_cflags(){

append host_cflags $($host_cflags_filter "$@")

}

add_host_ldflags(){

append host_ldflags $($host_ldflags_filter "$@")

}

add_compat(){

append compat_objs $1

shift

map 'add_cppflags -D$v' "$@"

}

check_cmd(){

log "$@"

"$@" >> $logfile 2>&1

}

check_stat(){

log check_stat "$@"

stat "$1" >> $logfile 2>&1

}

cc_o(){

eval printf '%s\\n' $CC_O

}

cc_e(){

eval printf '%s\\n' $CC_E

}

check_cc(){

log check_cc "$@"

cat > $TMPC

log_file $TMPC

check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC

}

check_cxx(){

log check_cxx "$@"

cat > $TMPCPP

log_file $TMPCPP

check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP

}

check_objcc(){

log check_objcc "$@"

cat > $TMPM

log_file $TMPM

check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM

}

check_cpp(){

log check_cpp "$@"

cat > $TMPC

log_file $TMPC

check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC

}

as_o(){

eval printf '%s\\n' $AS_O

}

check_as(){

log check_as "$@"

cat > $TMPS

log_file $TMPS

check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS

}

check_inline_asm(){

log check_inline_asm "$@"

name="$1"

code="$2"

shift 2

disable $name

check_cc "$@" <<EOF && enable $name

void foo(void){ __asm__ volatile($code); }

EOF

}

check_inline_asm_flags(){

log check_inline_asm_flags "$@"

name="$1"

code="$2"

flags=''

shift 2

while [ "$1" != "" ]; do

append flags $1

shift

done;

disable $name

cat > $TMPC <<EOF

void foo(void){ __asm__ volatile($code); }

EOF

log_file $TMPC

check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&

enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags

}

check_insn(){

log check_insn "$@"

check_inline_asm ${1}_inline "\"$2\""

echo "$2" | check_as && enable ${1}_external || disable ${1}_external

}

check_yasm(){

log check_yasm "$@"

echo "$1" > $TMPS

log_file $TMPS

shift 1

check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS

}

ld_o(){

eval printf '%s\\n' $LD_O

}

check_ld(){

log check_ld "$@"

type=$1

shift 1

flags=$(filter_out '-l*|*.so' $@)

libs=$(filter '-l*|*.so' $@)

check_$type $($cflags_filter $flags) || return

flags=$($ldflags_filter $flags)

libs=$($ldflags_filter $libs)

check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs

}

print_include(){

hdr=$1