configure 102 KB
Newer Older
1
#!/bin/sh
2
#
3
# Libav configure script
4
#
Diego Biurrun's avatar
Diego Biurrun committed
5 6 7
# Copyright (c) 2000-2002 Fabrice Bellard
# Copyright (c) 2005-2008 Diego Biurrun
# Copyright (c) 2005-2008 Mans Rullgard
8
#
9

10
# Prevent locale nonsense from breaking basic text processing.
11 12
LC_ALL=C
export LC_ALL
13

14
# make sure we are running under a compatible shell
15 16 17
# try to make this part work with most shells

try_exec(){
18
    echo "Trying shell $1"
19
    type "$1" > /dev/null 2>&1 && exec "$@"
20 21
}

Måns Rullgård's avatar
Måns Rullgård committed
22
unset foo
23
(: ${foo%%bar}) 2> /dev/null
24 25
E1="$?"

26
(: ${foo?}) 2> /dev/null
27 28 29 30
E2="$?"

if test "$E1" != 0 || test "$E2" = 0; then
    echo "Broken shell detected.  Trying alternatives."
31 32 33 34 35 36 37 38 39 40 41 42
    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 "$0" "$@"
43 44
    fi
    echo "No compatible shell script interpreter found."
Diego Biurrun's avatar
typo  
Diego Biurrun committed
45
    echo "This configure script requires a POSIX-compatible shell"
46
    echo "such as bash or ksh."
47
    echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
Diego Biurrun's avatar
Diego Biurrun committed
48
    echo "Instead, install a working POSIX-compatible shell."
49
    echo "Disabling this configure test will create a broken Libav."
50 51 52 53
    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
54 55 56
    exit 1
fi

57
show_help(){
58 59 60 61 62 63
cat <<EOF
Usage: configure [options]
Options: [defaults in brackets after descriptions]

Standard options:
  --help                   print this message
64
  --logfile=FILE           log tests and output to FILE [config.log]
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84
  --disable-logging        do not log configure debug information
  --prefix=PREFIX          install in PREFIX [$prefix]
  --bindir=DIR             install binaries in DIR [PREFIX/bin]
  --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  --libdir=DIR             install libs in DIR [PREFIX/lib]
  --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  --incdir=DIR             install includes in DIR [PREFIX/include]
  --mandir=DIR             install man page in DIR [PREFIX/share/man]

Configuration options:
  --disable-static         do not build static libraries [no]
  --enable-shared          build shared libraries [no]
  --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]
  --disable-doc            do not build documentation
  --disable-ffmpeg         disable ffmpeg build
  --disable-ffplay         disable ffplay build
Stefano Sabatini's avatar
Stefano Sabatini committed
85
  --disable-ffprobe        disable ffprobe build
86
  --disable-ffserver       disable ffserver build
87 88 89 90
  --disable-avdevice       disable libavdevice build
  --disable-avcodec        disable libavcodec build
  --disable-avformat       disable libavformat build
  --disable-swscale        disable libswscale build
91
  --disable-postproc       disable libpostproc build
92
  --disable-avfilter       disable video filter support [no]
93
  --disable-pthreads       disable pthreads [auto]
94 95 96 97 98 99 100 101
  --enable-w32threads      use Win32 threads [no]
  --enable-x11grab         enable X11 grabbing [no]
  --disable-network        disable network support [no]
  --enable-gray            enable full grayscale support (slower color)
  --disable-swscale-alpha  disable alpha channel support in swscale
  --disable-fastdiv        disable table-based division
  --enable-small           optimize for size instead of speed
  --disable-aandct         disable AAN DCT code
102
  --disable-dct            disable DCT code
103 104
  --disable-fft            disable FFT code
  --disable-golomb         disable Golomb code
105
  --disable-huffman        disable Huffman code
106 107 108 109 110
  --disable-lpc            disable LPC code
  --disable-mdct           disable MDCT code
  --disable-rdft           disable RDFT code
  --disable-vaapi          disable VAAPI code
  --disable-vdpau          disable VDPAU code
Laurent Aimar's avatar
Laurent Aimar committed
111
  --disable-dxva2          disable DXVA2 code
112 113 114
  --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
  --enable-hardcoded-tables use hardcoded tables instead of runtime generation
  --enable-memalign-hack   emulate memalign, interferes with memory debuggers
115
  --disable-everything     disable all components listed below
116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162
  --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
  --disable-indev=NAME     disable input device NAME
  --disable-outdev=NAME    disable output device NAME
  --disable-indevs         disable input devices
  --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
  --list-decoders          show all available decoders
  --list-encoders          show all available encoders
  --list-hwaccels          show all available hardware accelerators
  --list-muxers            show all available muxers
  --list-demuxers          show all available demuxers
  --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

External library support:
  --enable-avisynth        enable reading of AVISynth script files [no]
  --enable-bzlib           enable bzlib [autodetect]
Stefano Sabatini's avatar
Stefano Sabatini committed
163
  --enable-frei0r          enable frei0r video filtering
164 165
  --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
  --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
166
  --enable-libopencv       enable video filtering via libopencv [no]
167 168 169 170
  --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
                           and libraw1394 [no]
  --enable-libdirac        enable Dirac support via libdirac [no]
  --enable-libfaac         enable FAAC support via libfaac [no]
171
  --enable-libfreetype     enable libfreetype [no]
172 173 174 175 176
  --enable-libgsm          enable GSM support via libgsm [no]
  --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
  --enable-libnut          enable NUT (de)muxing via libnut,
                           native (de)muxer exists [no]
  --enable-libopenjpeg     enable JPEG 2000 decoding via OpenJPEG [no]
177
  --enable-librtmp         enable RTMP[E] support via librtmp [no]
178 179 180
  --enable-libschroedinger enable Dirac support via libschroedinger [no]
  --enable-libspeex        enable Speex decoding via libspeex [no]
  --enable-libtheora       enable Theora encoding via libtheora [no]
181
  --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
182
  --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
183 184
  --enable-libvorbis       enable Vorbis encoding via libvorbis,
                           native implementation exists [no]
James Zern's avatar
James Zern committed
185
  --enable-libvpx          enable VP8 support via libvpx [no]
186
  --enable-libx264         enable H.264 encoding via x264 [no]
187
  --enable-libxavs         enable AVS encoding via xavs [no]
188 189 190 191 192 193 194 195 196 197 198 199 200 201 202
  --enable-libxvid         enable Xvid encoding via xvidcore,
                           native MPEG-4/Xvid encoder exists [no]
  --enable-mlib            enable Sun medialib [no]
  --enable-zlib            enable zlib [autodetect]

Advanced options (experts only):
  --source-path=PATH       path to source code [$source_path]
  --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
  --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 [$target_os]
  --target-exec=CMD        command to run executables on target
  --target-path=DIR        path to view of build directory on target
  --nm=NM                  use nm tool
203
  --ar=AR                  use archive tool AR [$ar_default]
204 205 206 207 208 209 210 211 212 213 214 215 216 217 218
  --as=AS                  use assembler AS [$as_default]
  --cc=CC                  use C compiler CC [$cc_default]
  --ld=LD                  use linker LD
  --host-cc=HOSTCC         use host C compiler HOSTCC
  --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
  --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
  --host-libs=HLIBS        use libs HLIBS when linking for host
  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
  --extra-libs=ELIBS       add ELIBS [$ELIBS]
  --extra-version=STRING   version string suffix []
  --build-suffix=SUFFIX    library name suffix []
  --arch=ARCH              select architecture [$arch]
  --cpu=CPU                select the minimum required CPU (affects
                           instruction selection, may crash on older CPUs)
219
  --disable-asm            disable all assembler optimizations
220 221 222 223 224 225 226
  --disable-altivec        disable AltiVec optimizations
  --disable-amd3dnow       disable 3DNow! optimizations
  --disable-amd3dnowext    disable 3DNow! extended optimizations
  --disable-mmx            disable MMX optimizations
  --disable-mmx2           disable MMX2 optimizations
  --disable-sse            disable SSE optimizations
  --disable-ssse3          disable SSSE3 optimizations
Mans Rullgard's avatar
Mans Rullgard committed
227
  --disable-avx            disable AVX optimizations
228 229 230 231 232 233 234 235 236 237
  --disable-armv5te        disable armv5te optimizations
  --disable-armv6          disable armv6 optimizations
  --disable-armv6t2        disable armv6t2 optimizations
  --disable-armvfp         disable ARM VFP optimizations
  --disable-iwmmxt         disable iwmmxt optimizations
  --disable-mmi            disable MMI optimizations
  --disable-neon           disable neon optimizations
  --disable-vis            disable VIS optimizations
  --disable-yasm           disable use of yasm assembler
  --enable-pic             build position-independent code
238
  --malloc-prefix=PFX      prefix malloc and related names with PFX
239
  --enable-sram            allow use of on-chip SRAM
240
  --disable-symver         disable symbol versioning
241

242
Developer options (useful when working on Libav itself):
243 244 245 246
  --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
247 248
  --samples=PATH           location of test samples for FATE, if not set use
                           \$FATE_SAMPLES at make invocation time.
249 250 251

NOTE: Object files are built at the place where configure is launched.
EOF
252
  exit 0
253
}
254

255 256
quotes='""'

257
log(){
258
    echo "$@" >> $logfile
259 260
}

261
log_file(){
Måns Rullgård's avatar
Måns Rullgård committed
262
    log BEGIN $1
263
    pr -n -t $1 >> $logfile
Måns Rullgård's avatar
Måns Rullgård committed
264 265 266
    log END $1
}

267
echolog(){
Måns Rullgård's avatar
Måns Rullgård committed
268
    log "$@"
269
    echo "$@"
270 271
}

272 273 274 275 276
warn(){
    log "WARNING: $*"
    WARNINGS="${WARNINGS}WARNING: $*\n"
}

277 278 279
die(){
    echolog "$@"
    cat <<EOF
280

281
If you think configure made a mistake, make sure you are using the latest
Lou Logan's avatar
Lou Logan committed
282
version from Git.  If the latest version fails, report the problem to the
283
libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
284
EOF
285
    if disabled logging; then
286
        cat <<EOF
287 288
Rerun configure with logging enabled (do not use --disable-logging), and
include the log this produces with your report.
289 290 291
EOF
    else
cat <<EOF
292 293
Include the log file "$logfile" produced by configure as this will help
solving the problem.
294 295
EOF
    fi
296 297 298
    exit 1
}

299
# Avoid locale weirdness, besides we really just want to translate ASCII.
300
toupper(){
301
    echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
302 303
}

Måns Rullgård's avatar
Måns Rullgård committed
304
tolower(){
305
    echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
Måns Rullgård's avatar
Måns Rullgård committed
306 307
}

308 309 310 311
c_escape(){
    echo "$*" | sed 's/["\\]/\\\0/g'
}

312 313
sh_quote(){
    v=$(echo "$1" | sed "s/'/'\\\\''/g")
314
    test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
315 316 317
    echo "$v"
}

318 319 320 321
cleanws(){
    echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
}

322 323 324 325
filter(){
    pat=$1
    shift
    for v; do
326
        eval "case $v in $pat) echo $v ;; esac"
327 328 329
    done
}

330 331 332 333 334 335 336 337
filter_out(){
    pat=$1
    shift
    for v; do
        eval "case $v in $pat) ;; *) echo $v ;; esac"
    done
}

338 339 340
map(){
    m=$1
    shift
Måns Rullgård's avatar
Måns Rullgård committed
341
    for v; do eval $m; done
342 343
}

344 345 346 347 348 349 350 351
set_all(){
    value=$1
    shift
    for var in $*; do
        eval $var=$value
    done
}

352 353 354 355 356 357 358 359
set_weak(){
    value=$1
    shift
    for var; do
        eval : \${$var:=$value}
    done
}

360 361 362 363 364 365 366 367 368 369
set_safe(){
    var=$1
    shift
    eval $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')='$*'
}

get_safe(){
    eval echo \$$(echo "$1" | sed 's/[^A-Za-z0-9_]/_/g')
}

370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388
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
}

389 390 391 392 393 394 395 396
enable(){
    set_all yes $*
}

disable(){
    set_all no $*
}

397 398 399 400 401 402 403 404
enable_weak(){
    set_weak yes $*
}

disable_weak(){
    set_weak no $*
}

405
enable_safe(){
406 407 408
    for var; do
        enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
    done
409 410 411
}

disable_safe(){
412 413 414
    for var; do
        disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
    done
415 416
}

417 418 419 420
do_enable_deep(){
    for var; do
        enabled $var && continue
        eval sel="\$${var}_select"
421 422
        eval sgs="\$${var}_suggest"
        pushvar var sgs
423
        enable_deep $sel
424 425
        popvar sgs
        enable_deep_weak $sgs
426 427 428 429 430 431 432 433 434
        popvar var
    done
}

enable_deep(){
    do_enable_deep $*
    enable $*
}

435 436 437 438 439
enable_deep_weak(){
    do_enable_deep $*
    enable_weak $*
}

440
enabled(){
441 442
    test "${1#!}" = "$1" && op== || op=!=
    eval test "x\$${1#!}" $op "xyes"
443 444
}

445
disabled(){
446 447
    test "${1#!}" = "$1" && op== || op=!=
    eval test "x\$${1#!}" $op "xno"
448 449
}

450 451 452 453 454 455
enabled_all(){
    for opt; do
        enabled $opt || return 1
    done
}

456 457 458 459 460 461
disabled_all(){
    for opt; do
        disabled $opt || return 1
    done
}

462 463 464 465 466 467
enabled_any(){
    for opt; do
        enabled $opt && return 0
    done
}

468 469 470 471
disabled_any(){
    for opt; do
        disabled $opt && return 0
    done
472
    return 1
473 474
}

475 476
set_default(){
    for opt; do
477
        eval : \${$opt:=\$${opt}_default}
478 479 480
    done
}

481 482 483 484 485 486 487 488 489
is_in(){
    value=$1
    shift
    for var in $*; do
        [ $var = $value ] && return 0
    done
    return 1
}

490 491
check_deps(){
    for cfg; do
492
        cfg="${cfg#!}"
493 494 495 496
        enabled ${cfg}_checking && die "Circular dependency for $cfg."
        disabled ${cfg}_checking && continue
        enable ${cfg}_checking

497 498
        eval dep_all="\$${cfg}_deps"
        eval dep_any="\$${cfg}_deps_any"
499
        eval dep_sel="\$${cfg}_select"
500
        eval dep_sgs="\$${cfg}_suggest"
501 502
        eval dep_ifa="\$${cfg}_if"
        eval dep_ifn="\$${cfg}_if_any"
503

504 505 506
        pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
        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
507

508 509
        [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
        [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
Måns Rullgård's avatar
Måns Rullgård committed
510 511
        enabled_all  $dep_all || disable $cfg
        enabled_any  $dep_any || disable $cfg
512
        disabled_any $dep_sel && disable $cfg
513

514 515 516
        if enabled $cfg; then
            eval dep_extralibs="\$${cfg}_extralibs"
            test -n "$dep_extralibs" && add_extralibs $dep_extralibs
517
            enable_deep $dep_sel
518
            enable_deep_weak $dep_sgs
519 520
        fi

521
        disable ${cfg}_checking
522 523 524
    done
}

525 526 527 528 529 530 531 532 533 534
print_config_h(){
    enabled $1 && v=1 || v=0
    echo "#define $2 $v"
}

print_config_mak(){
    enabled $1 && v= || v=!
    echo "$v$2=yes"
}

535 536 537 538
print_config_asm(){
    enabled $1 && echo "%define $2"
}

539 540
print_config(){
    pfx=$1
541 542
    files=$2
    shift 2
543
    for cfg; do
544
        ucname="$(toupper $cfg)"
545 546 547
        for f in $files; do
            "print_config_${f##*.}" $cfg ${pfx}${ucname} >>$f
        done
548
    done
549 550
}

551 552 553 554 555 556 557 558 559
print_enabled(){
    test "$1" = -n && end=" " && shift || end="\n"
    suf=$1
    shift
    for v; do
        enabled $v && printf "%s$end" ${v%$suf};
    done
}

560 561 562 563 564 565
append(){
    var=$1
    shift
    eval "$var=\"\$$var $*\""
}

566 567 568 569 570 571
prepend(){
    var=$1
    shift
    eval "$var=\"$* \$$var\""
}

572
add_cppflags(){
573
    append CPPFLAGS $($filter_cppflags "$@")
574 575
}

576
add_cflags(){
577
    append CFLAGS $($filter_cflags "$@")
578 579
}

580
add_asflags(){
581
    append ASFLAGS $($filter_asflags "$@")
582 583
}

584 585 586 587 588
add_ldflags(){
    append LDFLAGS "$@"
}

add_extralibs(){
589
    prepend extralibs "$@"
590 591
}

592
check_cmd(){
Måns Rullgård's avatar
Måns Rullgård committed
593
    log "$@"
594
    "$@" >> $logfile 2>&1
595 596
}

597
check_cc(){
598
    log check_cc "$@"
599
    cat > $TMPC
600
    log_file $TMPC
601
    check_cmd $cc $CPPFLAGS $CFLAGS "$@" -c -o $TMPO $TMPC
602 603 604 605
}

check_cpp(){
    log check_cpp "$@"
606
    cat > $TMPC
607
    log_file $TMPC
Måns Rullgård's avatar
Måns Rullgård committed
608
    check_cmd $cc $CPPFLAGS $CFLAGS "$@" -E -o $TMPO $TMPC
609 610
}

611 612 613 614
check_as(){
    log check_as "$@"
    cat > $TMPC
    log_file $TMPC
615
    check_cmd $as $CPPFLAGS $ASFLAGS "$@" -c -o $TMPO $TMPC
616 617
}

618 619 620
check_asm(){
    log check_asm "$@"
    name="$1"
621
    code="$2"
622
    shift 2
623 624
    disable $name
    check_as "$@" <<EOF && enable $name
625
void foo(void){ __asm__ volatile($code); }
626 627 628
EOF
}

Loren Merritt's avatar
Loren Merritt committed
629 630 631 632 633 634 635 636
check_yasm(){
    log check_yasm "$@"
    echo "$1" > $TMPS
    log_file $TMPS
    shift 1
    check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
}

637
check_ld(){
638
    log check_ld "$@"
639 640 641 642 643
    flags=''
    libs=''
    for f; do
        test "${f}" = "${f#-l}" && flags="$flags $f" || libs="$libs $f"
    done
644
    check_cc $($filter_cflags $flags) || return
645
    check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
646 647
}

648 649
check_cppflags(){
    log check_cppflags "$@"
650 651
    set -- $($filter_cppflags "$@")
    check_cc "$@" <<EOF && append CPPFLAGS "$@"
652 653 654 655
int x;
EOF
}

656
check_cflags(){
657
    log check_cflags "$@"
658 659
    set -- $($filter_cflags "$@")
    check_cc "$@" <<EOF && append CFLAGS "$@"
660 661 662 663
int x;
EOF
}

664 665 666
test_ldflags(){
    log test_ldflags "$@"
    check_ld "$@" <<EOF
667
int main(void){ return 0; }
668 669 670
EOF
}

671 672 673 674 675
check_ldflags(){
    log check_ldflags "$@"
    test_ldflags "$@" && add_ldflags "$@"
}

676
check_header(){
677
    log check_header "$@"
678 679
    header=$1
    shift
680 681
    disable_safe $header
    check_cpp "$@" <<EOF && enable_safe $header
682 683 684 685 686 687
#include <$header>
int x;
EOF
}

check_func(){
688
    log check_func "$@"
689 690
    func=$1
    shift
Måns Rullgård's avatar
Måns Rullgård committed
691 692
    disable $func
    check_ld "$@" <<EOF && enable $func
693
extern int $func();
694
int main(void){ $func(); }
695 696 697
EOF
}

698
check_mathfunc(){
699
    log check_mathfunc "$@"
700 701 702 703 704
    func=$1
    shift
    disable $func
    check_ld "$@" <<EOF && enable $func
#include <math.h>
705 706
float foo(float f) { return $func(f); }
int main(void){ return 0; }
707 708 709
EOF
}

710 711
check_func_headers(){
    log check_func_headers "$@"
712
    headers=$1
713
    funcs=$2
714
    shift 2
715 716 717 718 719 720 721 722 723
    {
        for hdr in $headers; do
            echo "#include <$hdr>"
        done
        for func in $funcs; do
            echo "long check_$func(void) { return (long) $func; }"
        done
        echo "int main(void) { return 0; }"
    } | check_ld "$@" && enable $funcs && enable_safe $headers
724 725
}

726 727 728 729
check_cpp_condition(){
    log check_cpp_condition "$@"
    header=$1
    condition=$2
730 731
    shift 2
    check_cpp $($filter_cppflags "$@") <<EOF
732 733 734 735 736 737 738
#include <$header>
#if !($condition)
#error "unsatisfied condition: $condition"
#endif
EOF
}

739 740 741 742 743
check_lib(){
    log check_lib "$@"
    header="$1"
    func="$2"
    shift 2
744
    check_header $header && check_func $func "$@" && add_extralibs "$@"
745 746
}

747 748 749
check_lib2(){
    log check_lib2 "$@"
    headers="$1"
750
    funcs="$2"
751
    shift 2
752
    check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
753 754
}

755 756 757 758 759 760 761 762 763 764 765 766 767 768
check_pkg_config(){
    log check_pkg_config "$@"
    pkg="$1"
    headers="$2"
    funcs="$3"
    shift 3
    $pkg_config --exists $pkg || return
    pkg_cflags=$($pkg_config --cflags $pkg)
    pkg_libs=$($pkg_config --libs $pkg)
    check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
        set_safe ${pkg}_cflags $pkg_cflags   &&
        set_safe ${pkg}_libs   $pkg_libs
}

769
check_exec(){
770
    check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
771 772
}

773
check_exec_crash(){
774
    code=$(cat)
775 776 777 778 779 780 781

    # 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.

782
    (check_exec "$@") >> $logfile 2>&1 <<EOF
783 784 785 786
#include <signal.h>
static void sighandler(int sig){
    raise(SIGTERM);
}
Diego Biurrun's avatar
Diego Biurrun committed
787
int main(void){
788 789 790 791 792 793 794 795 796 797 798
    signal(SIGILL, sighandler);
    signal(SIGFPE, sighandler);
    signal(SIGSEGV, sighandler);
#ifdef SIGBUS
    signal(SIGBUS, sighandler);
#endif
    { $code }
}
EOF
}

799 800 801 802 803
check_type(){
    log check_type "$@"
    headers=$1
    type=$2
    shift 2
804
    disable_safe "$type"
805 806 807 808 809
    incs=""
    for hdr in $headers; do
        incs="$incs
#include <$hdr>"
    done
810
    check_cc "$@" <<EOF && enable_safe "$type"
811 812 813 814 815
$incs
$type v;
EOF
}

816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833
check_struct(){
    log check_type "$@"
    headers=$1
    struct=$2
    member=$3
    shift 3
    disable_safe "${struct}_${member}"
    incs=""
    for hdr in $headers; do
        incs="$incs
#include <$hdr>"
    done
    check_cc "$@" <<EOF && enable_safe "${struct}_${member}"
$incs
const void *p = &(($struct *)0)->$member;
EOF
}

834 835 836 837 838 839
require(){
    name="$1"
    header="$2"
    func="$3"
    shift 3
    check_lib $header $func "$@" || die "ERROR: $name not found"
840 841
}

842 843 844 845 846 847 848 849
require2(){
    name="$1"
    headers="$2"
    func="$3"
    shift 3
    check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
}

850 851 852 853 854 855 856
require_pkg_config(){
    pkg="$1"
    check_pkg_config "$@" || die "ERROR: $pkg not found"
    add_cflags    $(get_safe ${pkg}_cflags)
    add_extralibs $(get_safe ${pkg}_libs)
}

857 858 859 860 861 862 863 864 865 866 867 868 869 870
check_host_cc(){
    log check_host_cc "$@"
    cat > $TMPC
    log_file $TMPC
    check_cmd $host_cc $host_cflags "$@" -c -o $TMPO $TMPC
}

check_host_cflags(){
    log check_host_cflags "$@"
    check_host_cc "$@" <<EOF && append host_cflags "$@"
int x;
EOF
}

871 872 873 874 875 876
apply(){
    file=$1
    shift
    "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
}

877 878 879 880 881 882
cp_if_changed(){
    cmp -s "$1" "$2" &&
        echo "$2 is unchanged" ||
        cp -f "$1" "$2"
}

883 884 885
# CONFIG_LIST contains configurable options, while HAVE_LIST is for
# system-dependent things.

886 887 888 889 890
COMPONENT_LIST="
    bsfs
    decoders
    demuxers
    encoders
Vitor Sessak's avatar
Vitor Sessak committed
891
    filters
892
    hwaccels
893
    indevs
894
    muxers
895
    outdevs
896 897 898 899 900 901
    parsers
    protocols
"

CONFIG_LIST="
    $COMPONENT_LIST
902
    aandct
903
    ac3dsp
904 905
    avcodec
    avdevice
906
    avfilter
907
    avformat
908
    avisynth
909
    bzlib
910
    dct
911
    doc
912
    dwt
Laurent Aimar's avatar
Laurent Aimar committed
913
    dxva2
914
    fastdiv
915 916
    ffmpeg
    ffplay
Stefano Sabatini's avatar
Stefano Sabatini committed
917
    ffprobe
918
    ffserver
919
    fft
Stefano Sabatini's avatar
Stefano Sabatini committed
920
    frei0r
921
    golomb
922
    gpl
923
    gray
924
    h264dsp
925
    h264pred
Aurelien Jacobs's avatar
Aurelien Jacobs committed
926
    hardcoded_tables
927
    huffman
Ramiro Polla's avatar
Ramiro Polla committed
928
    libdc1394
929
    libdirac
930
    libfaac
931
    libfreetype
932
    libgsm
933
    libmp3lame
934
    libnut
935 936
    libopencore_amrnb
    libopencore_amrwb
937
    libopencv
938
    libopenjpeg
939
    librtmp
940
    libschroedinger
David Conrad's avatar
David Conrad committed
941
    libspeex
Diego Biurrun's avatar
Diego Biurrun committed
942
    libtheora
943
    libvo_aacenc
944
    libvo_amrwbenc
945
    libvorbis
James Zern's avatar
James Zern committed
946
    libvpx
947
    libx264
948
    libxavs
949
    libxvid
950
    lpc
951
    lsp
952
    mdct
953
    memalign_hack
954
    mlib
955
    mpegaudiodsp
956
    network
957
    nonfree
958
    pic
959
    postproc
960
    rdft
961
    rtpdec
962
    runtime_cpudetect
963
    shared
964
    sinewin
965
    small
966
    sram
967
    static
968
    swscale
969
    swscale_alpha
970 971
    vaapi
    vdpau
972
    version3
973
    x11grab
974
    zlib
975
"
976