configure 126 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 58
test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH

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

64
Help options:
65
  --help                   print this message
66 67 68 69 70 71 72 73 74 75 76 77 78
  --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:
79
  --logfile=FILE           log tests and output to FILE [config.log]
80 81 82
  --disable-logging        do not log configure debug information
  --prefix=PREFIX          install in PREFIX [$prefix]
  --bindir=DIR             install binaries in DIR [PREFIX/bin]
83
  --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84 85 86 87 88
  --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]

89
Licensing options:
90 91 92 93 94
  --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]
95 96 97 98 99 100 101 102

Configuration options:
  --disable-static         do not build static libraries [no]
  --enable-shared          build shared libraries [no]
  --enable-small           optimize for size instead of speed
  --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
  --enable-gray            enable full grayscale support (slower color)
  --disable-swscale-alpha  disable alpha channel support in swscale
103
  --disable-all            disable building components, libraries and programs
104

105 106
Program options:
  --disable-programs       do not build command line programs
107
  --disable-avconv         disable avconv build
Anton Khirnov's avatar
Anton Khirnov committed
108
  --disable-avplay         disable avplay build
Anton Khirnov's avatar
Anton Khirnov committed
109
  --disable-avprobe        disable avprobe build
Anton Khirnov's avatar
Anton Khirnov committed
110
  --disable-avserver       disable avserver build
111 112 113

Component options:
  --disable-doc            do not build documentation
114 115 116
  --disable-avdevice       disable libavdevice build
  --disable-avcodec        disable libavcodec build
  --disable-avformat       disable libavformat build
117
  --disable-avutil         disable libavutil build
118
  --disable-swscale        disable libswscale build
119
  --disable-avfilter       disable video filter support [no]
Justin Ruggles's avatar
Justin Ruggles committed
120
  --disable-avresample     disable libavresample build [no]
121
  --disable-pthreads       disable pthreads [auto]
122
  --disable-w32threads     disable Win32 threads [auto]
123
  --disable-network        disable network support [no]
124
  --disable-dct            disable DCT code
125
  --disable-error-resilience disable error resilience code
126
  --disable-lsp            disable LSP code
127
  --disable-lzo            disable LZO decoder code
128 129
  --disable-mdct           disable MDCT code
  --disable-rdft           disable RDFT code
130
  --disable-fft            disable FFT code
131 132

Hardware accelerators:
133
  --enable-dxva2           enable DXVA2 code
134
  --enable-vaapi           enable VAAPI code
135
  --enable-vda             enable VDA code
136
  --enable-vdpau           enable VDPAU code
137 138

Individual component options:
139
  --disable-everything     disable all components listed below
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163
  --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
164
  --enable-indev=NAME      enable input device NAME
165 166
  --disable-indev=NAME     disable input device NAME
  --disable-indevs         disable input devices
167 168
  --enable-outdev=NAME     enable output device NAME
  --disable-outdev=NAME    disable output device NAME
169 170 171 172 173 174 175 176 177
  --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:
  --enable-avisynth        enable reading of AVISynth script files [no]
  --enable-bzlib           enable bzlib [autodetect]
Stefano Sabatini's avatar
Stefano Sabatini committed
178
  --enable-frei0r          enable frei0r video filtering
179
  --enable-gnutls          enable gnutls [no]
180
  --enable-libcdio         enable audio CD grabbing with libcdio
181 182
  --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
                           and libraw1394 [no]
183 184
  --enable-libfaac         enable AAC encoding via libfaac [no]
  --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
185
  --enable-libfreetype     enable libfreetype [no]
186
  --enable-libgsm          enable GSM de/encoding via libgsm [no]
187
  --enable-libilbc         enable iLBC de/encoding via libilbc [no]
188
  --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
189 190 191
  --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]
192
  --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
Nicolas George's avatar
Nicolas George committed
193
  --enable-libopus         enable Opus decoding via libopus [no]
194
  --enable-libpulse        enable Pulseaudio input via libpulse [no]
195
  --enable-librtmp         enable RTMP[E] support via librtmp [no]
196 197
  --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
  --enable-libspeex        enable Speex de/encoding via libspeex [no]
198
  --enable-libtheora       enable Theora encoding via libtheora [no]
199
  --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
200
  --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
201
  --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
202
  --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
203
  --enable-libx264         enable H.264 encoding via x264 [no]
204
  --enable-libxavs         enable AVS encoding via xavs [no]
205 206
  --enable-libxvid         enable Xvid encoding via xvidcore,
                           native MPEG-4/Xvid encoder exists [no]
207
  --enable-openssl         enable openssl [no]
208
  --enable-x11grab         enable X11 grabbing [no]
209 210 211 212 213 214 215 216 217 218
  --enable-zlib            enable zlib [autodetect]

Advanced options (experts only):
  --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
219
  --target-samples=DIR     path to samples directory on target
220
  --toolchain=NAME         set tool defaults according to NAME
221
  --nm=NM                  use nm tool
222
  --ar=AR                  use archive tool AR [$ar_default]
223 224
  --as=AS                  use assembler AS [$as_default]
  --cc=CC                  use C compiler CC [$cc_default]
225
  --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
226 227 228
  --ld=LD                  use linker LD
  --host-cc=HOSTCC         use host C compiler HOSTCC
  --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
229
  --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
230
  --host-ld=HOSTLD         use host linker HOSTLD
231 232
  --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
  --host-libs=HLIBS        use libs HLIBS when linking for host
233
  --host-os=OS             compiler host OS [$target_os]
234 235 236 237
  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
  --extra-libs=ELIBS       add ELIBS [$ELIBS]
  --extra-version=STRING   version string suffix []
238
  --optflags=OPTFLAGS      override optimization-related compiler flags
239
  --build-suffix=SUFFIX    library name suffix []
240
  --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
241 242 243
  --arch=ARCH              select architecture [$arch]
  --cpu=CPU                select the minimum required CPU (affects
                           instruction selection, may crash on older CPUs)
244 245
  --enable-pic             build position-independent code
  --enable-sram            allow use of on-chip SRAM
246
  --enable-thumb           compile for Thumb instruction set
247 248 249 250 251 252
  --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
253
  --enable-lto             use link-time optimization
254 255

Optimization options (experts only):
256
  --disable-asm            disable all assembler optimizations
257 258 259 260
  --disable-altivec        disable AltiVec optimizations
  --disable-amd3dnow       disable 3DNow! optimizations
  --disable-amd3dnowext    disable 3DNow! extended optimizations
  --disable-mmx            disable MMX optimizations
261
  --disable-mmxext         disable MMXEXT optimizations
262
  --disable-sse            disable SSE optimizations
263 264
  --disable-sse2           disable SSE2 optimizations
  --disable-sse3           disable SSE3 optimizations
265
  --disable-ssse3          disable SSSE3 optimizations
266 267
  --disable-sse4           disable SSE4 optimizations
  --disable-sse42          disable SSE4.2 optimizations
Mans Rullgard's avatar
Mans Rullgard committed
268
  --disable-avx            disable AVX optimizations
269
  --disable-fma4           disable FMA4 optimizations
270 271 272
  --disable-armv5te        disable armv5te optimizations
  --disable-armv6          disable armv6 optimizations
  --disable-armv6t2        disable armv6t2 optimizations
273
  --disable-vfp            disable VFP optimizations
274
  --disable-neon           disable NEON optimizations
275
  --disable-vis            disable VIS optimizations
276
  --disable-inline-asm     disable use of inline assembler
277 278
  --disable-yasm           disable use of yasm assembler

279
Developer options (useful when working on Libav itself):
280 281 282 283
  --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
284
  --samples=PATH           location of test samples for FATE, if not set use
285
                           \$LIBAV_SAMPLES at make invocation time.
286 287
  --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
                           should be used only for debugging purposes)
288 289 290 291 292 293 294 295
  --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
296 297 298

NOTE: Object files are built at the place where configure is launched.
EOF
299
  exit 0
300
}
301

302 303
quotes='""'

304
log(){
305
    echo "$@" >> $logfile
306 307
}

308
log_file(){
Måns Rullgård's avatar
Måns Rullgård committed
309
    log BEGIN $1
310
    pr -n -t $1 >> $logfile
Måns Rullgård's avatar
Måns Rullgård committed
311 312 313
    log END $1
}

314
echolog(){
Måns Rullgård's avatar
Måns Rullgård committed
315
    log "$@"
316
    echo "$@"
317 318
}

319 320 321 322 323
warn(){
    log "WARNING: $*"
    WARNINGS="${WARNINGS}WARNING: $*\n"
}

324 325 326
die(){
    echolog "$@"
    cat <<EOF
327

328
If you think configure made a mistake, make sure you are using the latest
Lou Logan's avatar
Lou Logan committed
329
version from Git.  If the latest version fails, report the problem to the
330
libav-user@libav.org mailing list or IRC #libav on irc.freenode.net.
331
EOF
332
    if disabled logging; then
333
        cat <<EOF
334 335
Rerun configure with logging enabled (do not use --disable-logging), and
include the log this produces with your report.
336 337
EOF
    else
338
        cat <<EOF
339 340
Include the log file "$logfile" produced by configure as this will help
solving the problem.
341 342
EOF
    fi
343 344 345
    exit 1
}

346
# Avoid locale weirdness, besides we really just want to translate ASCII.
347
toupper(){
348
    echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
349 350
}

Måns Rullgård's avatar
Måns Rullgård committed
351
tolower(){
352
    echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
Måns Rullgård's avatar
Måns Rullgård committed
353 354
}

355 356 357 358
c_escape(){
    echo "$*" | sed 's/["\\]/\\\0/g'
}

359 360
sh_quote(){
    v=$(echo "$1" | sed "s/'/'\\\\''/g")
361
    test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
362 363 364
    echo "$v"
}

365 366 367 368
cleanws(){
    echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
}

369 370 371 372
filter(){
    pat=$1
    shift
    for v; do
373
        eval "case $v in $pat) echo $v ;; esac"
374 375 376
    done
}

377 378 379 380 381 382 383 384
filter_out(){
    pat=$1
    shift
    for v; do
        eval "case $v in $pat) ;; *) echo $v ;; esac"
    done
}

385 386 387
map(){
    m=$1
    shift
Måns Rullgård's avatar
Måns Rullgård committed
388
    for v; do eval $m; done
389 390
}

391 392 393 394 395 396
add_suffix(){
    suffix=$1
    shift
    for v; do echo ${v}${suffix}; done
}

397 398 399 400 401 402 403 404
set_all(){
    value=$1
    shift
    for var in $*; do
        eval $var=$value
    done
}

405 406 407 408 409 410 411 412
set_weak(){
    value=$1
    shift
    for var; do
        eval : \${$var:=$value}
    done
}

413 414 415 416
sanitize_var_name(){
    echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
}

417 418 419
set_safe(){
    var=$1
    shift
420
    eval $(sanitize_var_name "$var")='$*'
421 422 423
}

get_safe(){
424
    eval echo \$$(sanitize_var_name "$1")
425 426
}

427
pushvar(){
428 429 430 431
    for pvar in $*; do
        eval level=\${${pvar}_level:=0}
        eval ${pvar}_${level}="\$$pvar"
        eval ${pvar}_level=$(($level+1))
432 433 434 435
    done
}

popvar(){
436 437
    for pvar in $*; do
        eval level=\${${pvar}_level:-0}
438 439
        test $level = 0 && continue
        eval level=$(($level-1))
440 441 442
        eval $pvar="\${${pvar}_${level}}"
        eval ${pvar}_level=$level
        eval unset ${pvar}_${level}
443 444 445
    done
}

446 447 448 449 450 451 452 453
enable(){
    set_all yes $*
}

disable(){
    set_all no $*
}

454 455 456 457 458 459 460 461
enable_weak(){
    set_weak yes $*
}

disable_weak(){
    set_weak no $*
}

462
enable_safe(){
463 464 465
    for var; do
        enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
    done
466 467 468
}

disable_safe(){
469 470 471
    for var; do
        disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
    done
472 473
}

474 475 476 477
do_enable_deep(){
    for var; do
        enabled $var && continue
        eval sel="\$${var}_select"
478 479
        eval sgs="\$${var}_suggest"
        pushvar var sgs
480
        enable_deep $sel
481 482
        popvar sgs
        enable_deep_weak $sgs
483 484 485 486 487 488 489 490 491
        popvar var
    done
}

enable_deep(){
    do_enable_deep $*
    enable $*
}

492
enable_deep_weak(){
493 494 495 496 497 498 499
    for var; do
        disabled $var && continue
        pushvar var
        do_enable_deep $var
        popvar var
        enable_weak $var
    done
500 501
}

502
enabled(){
503 504
    test "${1#!}" = "$1" && op== || op=!=
    eval test "x\$${1#!}" $op "xyes"
505 506
}

507
disabled(){
508 509
    test "${1#!}" = "$1" && op== || op=!=
    eval test "x\$${1#!}" $op "xno"
510 511
}

512 513 514 515 516 517
enabled_all(){
    for opt; do
        enabled $opt || return 1
    done
}

518 519 520 521 522 523
disabled_all(){
    for opt; do
        disabled $opt || return 1
    done
}

524 525 526 527 528 529
enabled_any(){
    for opt; do
        enabled $opt && return 0
    done
}

530 531 532 533
disabled_any(){
    for opt; do
        disabled $opt && return 0
    done
534
    return 1
535 536
}

537 538
set_default(){
    for opt; do
539
        eval : \${$opt:=\$${opt}_default}
540 541 542
    done
}

543 544 545 546 547 548 549 550 551
is_in(){
    value=$1
    shift
    for var in $*; do
        [ $var = $value ] && return 0
    done
    return 1
}

552
do_check_deps(){
553
    for cfg; do
554
        cfg="${cfg#!}"
555 556 557
        enabled ${cfg}_checking && die "Circular dependency for $cfg."
        disabled ${cfg}_checking && continue
        enable ${cfg}_checking
558
        append allopts $cfg
559

560 561
        eval dep_all="\$${cfg}_deps"
        eval dep_any="\$${cfg}_deps_any"
562
        eval dep_sel="\$${cfg}_select"
563
        eval dep_sgs="\$${cfg}_suggest"
564 565
        eval dep_ifa="\$${cfg}_if"
        eval dep_ifn="\$${cfg}_if_any"
566

567
        pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
568
        do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
569
        popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
570

571 572
        [ -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
573 574
        enabled_all  $dep_all || disable $cfg
        enabled_any  $dep_any || disable $cfg
575
        disabled_any $dep_sel && disable $cfg
576

577
        if enabled $cfg; then
578
            enable_deep $dep_sel
579
            enable_deep_weak $dep_sgs
580 581
        fi

582
        disable ${cfg}_checking
583 584 585
    done
}

586 587 588 589 590 591 592 593 594 595 596 597
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
}

598 599
print_config(){
    pfx=$1
600 601
    files=$2
    shift 2
602 603 604 605 606 607 608 609 610 611 612 613 614 615
    map 'eval echo "$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\$/) {
616
                    n = -v ? \"\" : \"!\";
617 618 619 620
                    printf(\"%s%s=yes\\n\", n, c) >>file;
                }
            }
        }"
621 622
}

623 624 625 626
print_enabled(){
    suf=$1
    shift
    for v; do
627
        enabled $v && printf "%s\n" ${v%$suf};
628 629 630
    done
}

631 632 633 634 635 636
append(){
    var=$1
    shift
    eval "$var=\"\$$var $*\""
}

637 638 639 640 641 642
prepend(){
    var=$1
    shift
    eval "$var=\"$* \$$var\""
}

643
add_cppflags(){
644
    append CPPFLAGS "$@"
645 646
}

647
add_cflags(){
648
    append CFLAGS $($cflags_filter "$@")
649 650
}

651
add_asflags(){
652
    append ASFLAGS $($asflags_filter "$@")
653 654
}

655
add_ldflags(){
656
    append LDFLAGS $($ldflags_filter "$@")
657 658 659
}

add_extralibs(){
660
    prepend extralibs $($ldflags_filter "$@")
661 662
}

663 664 665 666
add_host_cppflags(){
    append host_cppflags "$@"
}

667 668 669 670 671 672 673 674
add_host_cflags(){
    append host_cflags $($host_cflags_filter "$@")
}

add_host_ldflags(){
    append host_ldflags $($host_ldflags_filter "$@")
}

675 676 677 678 679 680
add_compat(){
    append compat_objs $1
    shift
    map 'add_cppflags -D$v' "$@"
}

681
check_cmd(){
Måns Rullgård's avatar
Måns Rullgård committed
682
    log "$@"
683
    "$@" >> $logfile 2>&1
684 685
}

686 687 688 689
cc_o(){
    eval printf '%s\\n' $CC_O
}

690 691 692 693
cc_e(){
    eval printf '%s\\n' $CC_E
}

694
check_cc(){
695
    log check_cc "$@"
696
    cat > $TMPC
697
    log_file $TMPC
698
    check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
699 700 701 702
}

check_cpp(){
    log check_cpp "$@"
703
    cat > $TMPC
704
    log_file $TMPC
705
    check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
706 707
}

708 709 710 711
as_o(){
    eval printf '%s\\n' $AS_O
}

712 713
check_as(){
    log check_as "$@"
714 715 716
    cat > $TMPS
    log_file $TMPS
    check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
717 718
}

719 720
check_inline_asm(){
    log check_inline_asm "$@"
721
    name="$1"
722
    code="$2"
723
    shift 2
724
    disable $name
725
    check_cc "$@" <<EOF && enable $name
726
void foo(void){ __asm__ volatile($code); }
727 728 729
EOF
}

730 731 732 733 734 735
check_insn(){
    log check_insn "$@"
    check_inline_asm ${1}_inline "\"$2\""
    echo "$2" | check_as && enable ${1}_external || disable ${1}_external
}

Loren Merritt's avatar
Loren Merritt committed
736 737 738 739 740 741 742 743
check_yasm(){
    log check_yasm "$@"
    echo "$1" > $TMPS
    log_file $TMPS
    shift 1
    check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
}

744 745 746 747
ld_o(){
    eval printf '%s\\n' $LD_O
}

748
check_ld(){
749
    log check_ld "$@"
750 751
    flags=$(filter_out '-l*' "$@")
    libs=$(filter '-l*' "$@")
752
    check_cc $($cflags_filter $flags) || return
753 754
    flags=$($ldflags_filter $flags)
    libs=$($ldflags_filter $libs)
755
    check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
756 757
}

758 759 760 761 762 763 764 765 766 767 768 769 770 771
check_code(){
    log check_code "$@"
    check=$1
    headers=$2
    code=$3
    shift 3
    {
        for hdr in $headers; do
            echo "#include <$hdr>"
        done
        echo "int main(void) { $code; return 0; }"
    } | check_$check "$@"
}

772 773
check_cppflags(){
    log check_cppflags "$@"
774
    check_cc "$@" <<EOF && append CPPFLAGS "$@"
775 776 777 778
int x;
EOF
}

779
check_cflags(){
780
    log check_cflags "$@"
781
    set -- $($cflags_filter "$@")
782
    check_cc "$@" <<EOF && append CFLAGS "$@"
783 784 785 786
int x;
EOF
}

787 788 789
test_ldflags(){
    log test_ldflags "$@"
    check_ld "$@" <<EOF
790
int main(void){ return 0; }
791 792 793
EOF
}

794 795 796 797 798
check_ldflags(){
    log check_ldflags "$@"
    test_ldflags "$@" && add_ldflags "$@"
}

799
check_header(){
800
    log check_header "$@"
801 802
    header=$1
    shift
803 804
    disable_safe $header
    check_cpp "$@" <<EOF && enable_safe $header
805 806 807 808 809 810
#include <$header>
int x;
EOF
}

check_func(){
811
    log check_func "$@"
812 813
    func=$1
    shift
Måns Rullgård's avatar
Måns Rullgård committed
814 815
    disable $func
    check_ld "$@" <<EOF && enable $func
816
extern int $func();
817
int main(void){ $func(); }
818 819 820
EOF
}

821
check_mathfunc(){
822
    log check_mathfunc "$@"
823
    func=$1
824 825 826
    narg=$2
    shift 2
    test $narg = 2 && args="f, g" || args="f"
827 828 829
    disable $func
    check_ld "$@" <<EOF && enable $func
#include <math.h>
830
float foo(float f, float g) { return $func($args); }
831
int main(void){ return 0; }
832 833 834
EOF
}

835 836
check_func_headers(){
    log check_func_headers "$@"
837
    headers=$1
838
    funcs=$2
839
    shift 2
840 841 842 843 844 845 846 847 848
    {
        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
849 850
}

851 852 853 854
check_cpp_condition(){
    log check_cpp_condition "$@"
    header=$1
    condition=$2
855
    shift 2
856
    check_cpp "$@" <<EOF
857 858 859 860 861 862 863
#include <$header>
#if !($condition)
#error "unsatisfied condition: $condition"
#endif
EOF
}

864 865 866 867 868
check_lib(){
    log check_lib "$@"
    header="$1"
    func="$2"
    shift 2
869
    check_header $header && check_func $func "$@" && add_extralibs "$@"
870 871
}

872 873 874
check_lib2(){
    log check_lib2 "$@"
    headers="$1"
875
    funcs="$2"
876
    shift 2
877
    check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
878 879
}

880 881 882 883 884 885 886 887 888 889 890 891 892 893
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
}

894
check_exec(){
895
    check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
896 897
}

898
check_exec_crash(){
899
    code=$(cat)
900 901 902 903 904 905 906

    # 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.

907
    (check_exec "$@") >> $logfile 2>&1 <<EOF
908 909 910 911
#include <signal.h>
static void sighandler(int sig){
    raise(SIGTERM);
}
912 913 914
int foo(void){
    $code
}
915
int (*func_ptr)(void) = foo;
Diego Biurrun's avatar
Diego Biurrun committed
916
int main(void){