configure

   1 #!/bin/sh
   2 #
   3 # ffmpeg configure script (c) 2000, 2001, 2002 Fabrice Bellard
   4 #
   5 # set temporary file name
   6 if test ! -z "$TMPDIR" ; then
   7     TMPDIR1="${TMPDIR}"
   8 elif test ! -z "$TEMPDIR" ; then
   9     TMPDIR1="${TEMPDIR}"
  10 else
  11     TMPDIR1="/tmp"
  12 fi
  13
  14 TMPC="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.c"
  15 TMPO="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.o"
  16 TMPS="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.S"
  17 TMPH="${TMPDIR1}/ffmpeg-conf-${RANDOM}-$$-${RANDOM}.h"
  18
  19 # default parameters
  20 prefix="/usr/local"
  21 cross_prefix=""
  22 cc="gcc"
  23 ar="ar"
  24 ranlib="ranlib"
  25 make="make"
  26 strip="strip"
  27 cpu=`uname -m`
  28 mmx="default"
  29 altivec="default"
  30 mmi="default"
  31 case "$cpu" in
  32   i386|i486|i586|i686|i86pc|BePC)
  33     cpu="x86"
  34   ;;
  35   armv4l)
  36     cpu="armv4l"
  37   ;;
  38   alpha)
  39     cpu="alpha"
  40   ;;
  41   "Power Macintosh"|ppc)
  42     cpu="powerpc"
  43   ;;
  44   mips)
  45     cpu="mips"
  46   ;;
  47   *)
  48     cpu="unknown"
  49   ;;
  50 esac
  51 gprof="no"
  52 v4l="yes"
  53 audio_oss="yes"
  54 audio_beos="no"
  55 network="yes"
  56 zlib="yes"
  57 mp3lame="no"
  58 vorbis="no"
  59 a52="yes"
  60 a52bin="no"
  61 win32="no"
  62 cygwin="no"
  63 lshared="no"
  64 extralibs="-lm"
  65 simpleidct="yes"
  66 bigendian="no"
  67 vhook="no"
  68 mpegaudio_hp="yes"
  69 SHFLAGS=-shared
  70 netserver="no"
  71
  72 # OS specific
  73 targetos=`uname -s`
  74 case $targetos in
  75 BeOS)
  76 prefix="/boot/home/config"
  77 # helps building libavcodec
  78 CFLAGS="-O3 -DPIC -fomit-frame-pointer"
  79 # 3 gcc releases known for BeOS, each with ugly bugs
  80 gcc_version="$($cc -v 2>&1 | grep version | cut -d ' ' -f3-)"
  81 case "$gcc_version" in
  82 2.9-beos-991026*|2.9-beos-000224*) echo "R5/GG gcc"
  83 mmx="no"
  84 ;;
  85 *20010315*) echo "BeBits gcc"
  86 CFLAGS="$CFLAGS -fno-expensive-optimizations"
  87 ;;
  88 esac
  89 SHFLAGS=-nostart
  90 # disable linux things
  91 audio_oss="no"
  92 v4l="no"
  93 # enable beos things
  94 audio_beos="yes"
  95 # no need for libm, but the inet stuff
  96 # Check for BONE
  97 if (echo $BEINCLUDES|grep 'headers/be/bone' >/dev/null); then
  98 extralibs="-lbind -lsocket"
  99 else
 100 netserver="yes"
 101 extralibs="-lnet"
 102 fi ;;
 103 BSD/OS)
 104 v4l="no"
 105 audio_oss="yes"
 106 extralibs="-lpoll -lgnugetopt -lm"
 107 make="gmake"
 108 ;;
 109 Darwin)
 110 cc="cc"
 111 v4l="no"
 112 audio_oss="no"
 113 CFLAGS="-no-cpp-precomp -pipe -O3 -fomit-frame-pointer -mdynamic-no-pic"
 114 SHFLAGS="-dynamiclib"
 115 extralibs=""
 116 darwin="yes"
 117 strip="strip -x"
 118 ;;
 119 CYGWIN*)
 120 v4l="no"
 121 audio_oss="yes"
 122 extralibs=""
 123 cygwin="yes"
 124 test -f /usr/include/inttypes.h || \
 125 test -f /usr/local/include/inttypes.h || \
 126 echo "Missing inttypes.h, please copy cygwin_inttypes.h to" \
 127      "/usr/include/inttypes.h !!!"
 128 ;;
 129 Linux)
 130 LDFLAGS=-rdynamic
 131 ;;
 132 *) ;;
 133 esac
 134
 135 # find source path
 136 # XXX: we assume an absolute path is given when launching configure,
 137 # except in './configure' case.
 138 source_path=${0%configure}
 139 source_path=${source_path%/}
 140 source_path_used="yes"
 141 if test -z "$source_path" -o "$source_path" = "." ; then
 142     source_path=`pwd`
 143     source_path_used="no"
 144 fi
 145
 146 cat > $TMPC << EOF
 147 #include <dlfcn.h>
 148 int main( void ) { return (int) dlopen("foo", 0); }
 149 EOF
 150
 151 if $cc -o $TMPO $TMPC -ldl 2> /dev/null  ; then
 152 vhook=yes
 153 fi
 154
 155 cat > $TMPC << EOF
 156 #include <X11/Xlib.h>
 157 #include <Imlib2.h>
 158 int main( void ) { return (int) imlib_load_font("foo"); }
 159 EOF
 160
 161 imlib2=no
 162 if $cc -o $TMPO $TMPC -lImlib2 2> /dev/null  ; then
 163 imlib2=yes
 164 fi
 165
 166 for opt do
 167   case "$opt" in
 168   --prefix=*) prefix=`echo $opt | cut -d '=' -f 2`
 169   ;;
 170   --source-path=*) source_path=`echo $opt | cut -d '=' -f 2`
 171   ;;
 172   --cross-prefix=*) cross_prefix=`echo $opt | cut -d '=' -f 2`
 173   ;;
 174   --cc=*) cc=`echo $opt | cut -d '=' -f 2`
 175   ;;
 176   --make=*) make=`echo $opt | cut -d '=' -f 2`
 177   ;;
 178   --extra-cflags=*) CFLAGS="${opt#--extra-cflags=}"
 179   ;;
 180   --extra-ldflags=*) LDFLAGS=${opt#--extra-ldflags=}
 181   ;;
 182   --extra-libs=*) extralibs=${opt#--extra-libs=}
 183   ;;
 184   --cpu=*) cpu=`echo $opt | cut -d '=' -f 2`
 185   ;;
 186   --disable-mmx) mmx="no"
 187   ;;
 188   --disable-altivec) altivec="no"
 189   ;;
 190   --enable-gprof) gprof="yes"
 191   ;;
 192   --disable-v4l) v4l="no"
 193   ;;
 194   --disable-audio-oss) audio_oss="no"
 195   ;;
 196   --disable-audio-beos) audio_beos="no"
 197   ;;
 198   --disable-network) network="no"
 199   ;;
 200   --disable-zlib) zlib="no"
 201   ;;
 202   --disable-a52) a52="no"
 203   ;;
 204   --enable-a52bin) a52bin="yes" ; extralibs="-ldl $extralibs"
 205   ;;
 206   --enable-mp3lame) mp3lame="yes"
 207   ;;
 208   --enable-vorbis) vorbis="yes"
 209   ;;
 210   --disable-vhook) vhook="no"
 211   ;;
 212   --disable-simple_idct) simpleidct="no"
 213   ;;
 214   --enable-win32) win32="yes"
 215   ;;
 216   --enable-shared) lshared="yes"
 217   ;;
 218   --disable-mpegaudio-hp) mpegaudio_hp="no"
 219   ;;
 220   esac
 221 done
 222
 223 # compute mmx state
 224 if test $mmx = "default"; then
 225     if test $cpu = "x86"; then
 226         mmx="yes"
 227     else
 228         mmx="no"
 229     fi
 230 fi
 231
 232 # Can only do AltiVec on PowerPC
 233 if test $altivec = "default"; then
 234     if test $cpu = "powerpc"; then
 235         altivec="yes"
 236     else
 237         altivec="no"
 238     fi
 239 fi
 240
 241 # See does our compiler support Motorola AltiVec C API
 242 if test $altivec = "yes"; then
 243 cat > $TMPC << EOF
 244 int main(void) {
 245     vector signed int v1, v2, v3;
 246     v1 = vec_add(v2,v3);
 247     return 0;
 248 }
 249 EOF
 250 $cc -o $TMPO $TMPC -faltivec 2> /dev/null || altivec="no"
 251 fi
 252
 253 # Can only do mmi on mips
 254 if test $mmi = "default"; then
 255     if test $cpu = "mips"; then
 256         mmi="yes"
 257     else
 258         mmi="no"
 259     fi
 260 fi
 261
 262 # See does our compiler support mmi
 263 if test $mmi = "yes"; then
 264 cat > $TMPC << EOF
 265 int main(void) {
 266     __asm__ ("lq \$2, 0(\$2)");
 267     return 0;
 268 }
 269 EOF
 270 $cc -o $TMPO $TMPC 2> /dev/null || mmi="no"
 271 fi
 272
 273 # Checking for CFLAGS
 274 if test -z "$CFLAGS"; then
 275     CFLAGS="-O3"
 276 fi
 277
 278 if test "$win32" = "yes" ; then
 279     cross_prefix="i386-mingw32msvc-"
 280     v4l="no"
 281     audio_oss="no"
 282     network="no"
 283 fi
 284
 285 cc="${cross_prefix}${cc}"
 286 ar="${cross_prefix}${ar}"
 287 ranlib="${cross_prefix}${ranlib}"
 288 strip="${cross_prefix}${strip}"
 289
 290 if test -z "$cross_prefix" ; then
 291
 292 # ---
 293 # big/little endian test
 294 cat > $TMPC << EOF
 295 #include <inttypes.h>
 296 int main(int argc, char ** argv){
 297         volatile uint32_t i=0x01234567;
 298         return (*((uint8_t*)(&i))) == 0x67;
 299 }
 300 EOF
 301
 302 if $cc -o $TMPO $TMPC 2>/dev/null ; then
 303 $TMPO && bigendian="yes"
 304 else
 305 echo big/little test failed
 306 fi
 307
 308 else
 309
 310 # if cross compiling, cannot launch a program, so make a static guess
 311 if test "$cpu" = "powerpc" -o "$cpu" = "mips" ; then
 312     bigendian="yes"
 313 fi
 314
 315 fi
 316
 317 # ---
 318 # check availability of some header files
 319
 320 cat > $TMPC << EOF
 321 #include <malloc.h>
 322 int main( void ) { return 0; }
 323 EOF
 324
 325 _memalign=no
 326 _malloc_h=no
 327 if $cc -o $TMPO $TMPC 2> /dev/null ; then
 328 _malloc_h=yes
 329 _memalign=yes
 330 # check for memalign - atmos
 331 cat > $TMPC << EOF
 332 #include <malloc.h>
 333 int main ( void ) {
 334 char *string = NULL;
 335 string = memalign(64, sizeof(char));
 336 return 0;
 337 }
 338 EOF
 339 $cc -o $TMPO $TMPC 2> /dev/null || _memalign=no
 340 fi
 341
 342 cat > $TMPC << EOF
 343 #define _GNU_SOURCE
 344 #include <time.h>
 345 int main( void ) { return *strptime("", "", 0); }
 346 EOF
 347
 348 strptime=no
 349 if $cc -o $TMPO $TMPC 2> /dev/null ; then
 350   strptime=yes
 351 fi
 352
 353 if test "$zlib" = "yes"; then
 354 # check for zlib - mmu_man
 355 cat > $TMPC << EOF
 356 #include <zlib.h>
 357 int main ( void ) {
 358 if (zlibVersion() != ZLIB_VERSION)
 359    puts("zlib version differs !!!");
 360    return 1;
 361 return 0;
 362 }
 363 EOF
 364 $cc -o $TMPO $TMPC -lz 2> /dev/null || zlib="no"
 365 # $TMPO 2> /dev/null > /dev/null || zlib="no"
 366 # XXX: more tests needed - runtime test
 367 fi
 368 if test "$zlib" = "yes"; then
 369 extralibs="$extralibs -lz"
 370 fi
 371
 372 # test for lrintf in math.h
 373 cat > $TMPC << EOF
 374 #define _ISOC9X_SOURCE  1
 375 #include <math.h>
 376 int main( void ) { return (lrintf(3.999f) > 0)?0:1; }
 377 EOF
 378
 379 have_lrintf="no"
 380 if $cc $extralibs -o $TMPO $TMPC 2> /dev/null ; then
 381   have_lrintf="yes"
 382   $TMPO 2> /dev/null > /dev/null || have_lrintf="no"
 383 fi
 384
 385 _restrict=
 386 for restrict_keyword in restrict __restrict__ __restrict; do
 387   echo "void foo(char * $restrict_keyword p);" > $TMPC
 388   if $cc -c -o $TMPO $TMPC 2> /dev/null; then
 389     _restrict=$restrict_keyword
 390     break;
 391   fi
 392 done
 393
 394 if test x"$1" = x"-h" -o x"$1" = x"--help" ; then
 395 cat << EOF
 396
 397 Usage: configure [options]
 398 Options: [defaults in brackets after descriptions]
 399
 400 EOF
 401 echo "Standard options:"
 402 echo "  --help                   print this message"
 403 echo "  --prefix=PREFIX          install in PREFIX [$prefix]"
 404 echo "  --enable-mp3lame         enable mp3 encoding via libmp3lame [default=no]"
 405 echo "  --enable-vorbis          enable vorbis support via libvorbisenc [default=no]"
 406 echo "  --enable-win32           enable win32 cross compile"
 407 echo "  --disable-a52            disable GPL'ed A52 support [default=no]"
 408 echo "  --enable-a52bin          open liba52.so.0 at runtime [default=no]"
 409 echo "  --enable-shared          build shared libraries [default=no]"
 410 echo ""
 411 echo "Advanced options (experts only):"
 412 echo "  --source-path=PATH       path of source code [$source_path]"
 413 echo "  --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]"
 414 echo "  --cc=CC                  use C compiler CC [$cc]"
 415 echo "  --make=MAKE              use specified make [$make]"
 416 echo "  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]"
 417 echo "  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]"
 418 echo "  --extra-libs=ELIBS       add ELIBS [$ELIBS]"
 419 echo "  --cpu=CPU                force cpu to CPU  [$cpu]"
 420 echo "  --disable-mmx            disable mmx usage"
 421 echo "  --disable-altivec        disable AltiVec usage"
 422 echo "  --disable-audio-oss      disable OSS audio support [default=no]"
 423 echo "  --disable-audio-beos     disable BeOS audio support [default=no]"
 424 echo "  --disable-v4l            disable video4linux grabbing [default=no]"
 425 echo "  --disable-network        disable network support [default=no]"
 426 echo "  --disable-zlib           disable zlib [default=no]"
 427 echo "  --disable-simple_idct    disable simple IDCT routines [default=no]"
 428 echo "  --disable-vhook          disable video hooking support"
 429 echo "  --enable-gprof           enable profiling with gprof [$gprof]"
 430 echo "  --disable-mpegaudio-hp   faster (but less accurate)"
 431 echo "                           mpegaudio decoding [default=no]"
 432 echo ""
 433 echo "NOTE: The object files are build at the place where configure is launched"
 434 exit 1
 435 fi
 436
 437 echo "Install prefix   $prefix"
 438 echo "Source path      $source_path"
 439 echo "C compiler       $cc"
 440 echo "make             $make"
 441 echo "CPU              $cpu"
 442 echo "Big Endian       $bigendian"
 443 if test $cpu = "x86"; then
 444 echo "MMX enabled      $mmx"
 445 fi
 446 if test $cpu = "mips"; then
 447 echo "MMI enabled      $mmi"
 448 fi
 449 if test $cpu = "powerpc"; then
 450 echo "AltiVec enabled  $altivec"
 451 fi
 452 echo "gprof enabled    $gprof"
 453 echo "zlib enabled     $zlib"
 454 echo "mp3lame enabled  $mp3lame"
 455 echo "vorbis enabled   $vorbis"
 456 echo "a52 support      $a52"
 457 echo "a52 dlopened     $a52bin"
 458 echo "Video hooking    $vhook"
 459
 460 if test "$vhook" = "yes" ; then
 461 echo "Imlib2 support   $imlib2"
 462 fi
 463
 464 echo "Creating config.mak and config.h"
 465
 466 echo "# Automatically generated by configure - do not modify" > config.mak
 467 echo "/* Automatically generated by configure - do not modify */" > $TMPH
 468
 469 echo "prefix=$prefix" >> config.mak
 470 echo "MAKE=$make" >> config.mak
 471 echo "CC=$cc" >> config.mak
 472 echo "AR=$ar" >> config.mak
 473 echo "RANLIB=$ranlib" >> config.mak
 474 echo "STRIP=$strip" >> config.mak
 475 echo "OPTFLAGS=$CFLAGS" >> config.mak
 476 echo "LDFLAGS=$LDFLAGS" >> config.mak
 477 echo "SHFLAGS=$SHFLAGS" >> config.mak
 478 echo "LDFLAGS=$LDFLAGS" >> config.mak
 479 if test "$cpu" = "x86" ; then
 480   echo "TARGET_ARCH_X86=yes" >> config.mak
 481   echo "#define ARCH_X86 1" >> $TMPH
 482 elif test "$cpu" = "armv4l" ; then
 483   echo "TARGET_ARCH_ARMV4L=yes" >> config.mak
 484   echo "#define ARCH_ARMV4L 1" >> $TMPH
 485 elif test "$cpu" = "alpha" ; then
 486   echo "TARGET_ARCH_ALPHA=yes" >> config.mak
 487   echo "#define ARCH_ALPHA 1" >> $TMPH
 488 elif test "$cpu" = "powerpc" ; then
 489   echo "TARGET_ARCH_POWERPC=yes" >> config.mak
 490   echo "#define ARCH_POWERPC 1" >> $TMPH
 491 elif test "$cpu" = "mips" ; then
 492   echo "TARGET_ARCH_MIPS=yes" >> config.mak
 493   echo "#define ARCH_MIPS 1" >> $TMPH
 494 fi
 495 if test "$bigendian" = "yes" ; then
 496   echo "WORDS_BIGENDIAN=yes" >> config.mak
 497   echo "#define WORDS_BIGENDIAN 1" >> $TMPH
 498 fi
 499 if test "$mmx" = "yes" ; then
 500   echo "TARGET_MMX=yes" >> config.mak
 501   echo "#define HAVE_MMX 1" >> $TMPH
 502 fi
 503 if test "$mmi" = "yes" ; then
 504   echo "TARGET_MMI=yes" >> config.mak
 505   echo "#define HAVE_MMI 1" >> $TMPH
 506 fi
 507 if test "$altivec" = "yes" ; then
 508   echo "TARGET_ALTIVEC=yes" >> config.mak
 509   echo "#define HAVE_ALTIVEC 1" >> $TMPH
 510 fi
 511 if test "$gprof" = "yes" ; then
 512   echo "TARGET_GPROF=yes" >> config.mak
 513   echo "#define HAVE_GPROF 1" >> $TMPH
 514 fi
 515 if test "$strptime" = "yes" ; then
 516   echo "#define HAVE_STRPTIME 1" >> $TMPH
 517 else
 518   echo "BUILD_STRPTIME=yes" >> config.mak
 519 fi
 520 if test "$imlib2" = "yes" ; then
 521   echo "HAVE_IMLIB2=yes" >> config.mak
 522 fi
 523 if test "$have_lrintf" = "yes" ; then
 524   echo "#define HAVE_LRINTF 1" >> $TMPH
 525 fi
 526 if test "$vhook" = "yes" ; then
 527   echo "BUILD_VHOOK=yes" >> config.mak
 528   echo "#define HAVE_VHOOK 1" >> $TMPH
 529   extralibs="$extralibs -ldl"
 530 fi
 531 if test "$lshared" = "yes" ; then
 532   echo "BUILD_SHARED=yes" >> config.mak
 533   echo "PIC=-fPIC" >> config.mak
 534 fi
 535 echo "EXTRALIBS=$extralibs" >> config.mak
 536 echo -n "VERSION=" >>config.mak
 537 head $source_path/VERSION >>config.mak
 538 echo "" >>config.mak
 539 # if you do not want to use encoders, disable that.
 540 echo "#define CONFIG_ENCODERS 1" >> $TMPH
 541 echo "CONFIG_ENCODERS=yes" >> config.mak
 542
 543 # if you do not want to use decoders, disable that.
 544 echo "#define CONFIG_DECODERS 1" >> $TMPH
 545 echo "CONFIG_DECODERS=yes" >> config.mak
 546
 547 # AC3
 548 if test "$a52" = "yes" ; then
 549   echo "#define CONFIG_AC3 1" >> $TMPH
 550   echo "CONFIG_AC3=yes" >> config.mak
 551
 552   if test "$a52bin" = "yes" ; then
 553     echo "#define CONFIG_A52BIN 1" >> $TMPH
 554     echo "CONFIG_A52BIN=yes" >> config.mak
 555   fi
 556 fi
 557
 558 # mpeg audio high precision mode
 559 if test "$mpegaudio_hp" = "yes" ; then
 560   echo "#define CONFIG_MPEGAUDIO_HP 1" >> $TMPH
 561 fi
 562
 563 if test "$v4l" = "yes" ; then
 564   echo "#define CONFIG_VIDEO4LINUX 1" >> $TMPH
 565   echo "CONFIG_VIDEO4LINUX=yes" >> config.mak
 566 fi
 567
 568 if test "$audio_oss" = "yes" ; then
 569   echo "#define CONFIG_AUDIO_OSS 1" >> $TMPH
 570   echo "CONFIG_AUDIO_OSS=yes" >> config.mak
 571 fi
 572
 573 if test "$audio_beos" = "yes" ; then
 574   echo "#define CONFIG_AUDIO_BEOS 1" >> $TMPH
 575   echo "CONFIG_AUDIO_BEOS=yes" >> config.mak
 576 fi
 577
 578 if test "$network" = "yes" ; then
 579   echo "#define CONFIG_NETWORK 1" >> $TMPH
 580   echo "CONFIG_NETWORK=yes" >> config.mak
 581 fi
 582
 583 if test "$zlib" = "yes" ; then
 584   echo "#define CONFIG_ZLIB 1" >> $TMPH
 585   echo "CONFIG_ZLIB=yes" >> config.mak
 586 fi
 587
 588 if test "$mp3lame" = "yes" ; then
 589   echo "#define CONFIG_MP3LAME 1" >> $TMPH
 590   echo "CONFIG_MP3LAME=yes" >> config.mak
 591 fi
 592
 593 if test "$vorbis" = "yes" ; then
 594   echo "#define CONFIG_VORBIS 1" >> $TMPH
 595   echo "CONFIG_VORBIS=yes" >> config.mak
 596 fi
 597
 598 if test "$win32" = "yes" ; then
 599   echo "#define CONFIG_WIN32 1" >> $TMPH
 600   echo "CONFIG_WIN32=yes" >> config.mak
 601 fi
 602
 603 if test "$cygwin" = "yes" ; then
 604   # setup correct exesuffix
 605   echo "CONFIG_WIN32=yes" >> config.mak
 606 fi
 607
 608 if test "$darwin" = "yes"; then
 609   echo "#define CONFIG_DARWIN 1"  >> $TMPH
 610   echo "CONFIG_DARWIN=yes" >> config.mak
 611 fi
 612
 613 if test "$_malloc_h" = "yes" ; then
 614   echo "#define HAVE_MALLOC_H 1" >> $TMPH
 615 else
 616   echo "#undef  HAVE_MALLOC_H" >> $TMPH
 617 fi
 618
 619 if test "$_memalign" = "yes" ; then
 620   echo "#define HAVE_MEMALIGN 1" >> $TMPH
 621 else
 622   echo "#undef  HAVE_MEMALIGN" >> $TMPH
 623 fi
 624
 625 if test "$netserver" = "yes" ; then
 626   echo "#define CONFIG_BEOS_NETSERVER 1" >> $TMPH
 627   echo "CONFIG_BEOS_NETSERVER=yes" >> config.mak
 628 fi
 629
 630 if test "$simpleidct" = "yes" ; then
 631   echo "#define SIMPLE_IDCT 1" >> $TMPH
 632 fi
 633
 634 echo "#define restrict $_restrict" >> $TMPH
 635
 636 # build tree in object directory if source path is different from current one
 637 if test "$source_path_used" = "yes" ; then
 638     DIRS="libav libavcodec libavcodec/alpha libavcodec/armv4l libavcodec/i386 \
 639           libavcodec/ppc libavcodec/liba52 libavcodec/mlib tests"
 640     FILES="Makefile libav/Makefile libavcodec/Makefile tests/Makefile"
 641     for dir in $DIRS ; do
 642             mkdir -p $dir
 643     done
 644     for f in $FILES ; do
 645         ln -sf $source_path/$f $f
 646     done
 647 fi
 648 echo "SRC_PATH=$source_path" >> config.mak
 649
 650 diff $TMPH config.h >/dev/null 2>&1
 651 if test $? -ne 0 ; then
 652         mv -f $TMPH config.h
 653 else
 654         echo "config.h is unchanged"
 655 fi
 656
 657 rm -f $TMPO $TMPC $TMPS $TMPH