configure

ffmpeg源码分析

fi

if test "$lzo" = "yes" -a "$gpl" = "yes"; then
# check for liblzo
cat > $TMPC << EOF
#include <lzo1x.h>
int main ( void ) {
lzo_init();
return 0;
}
EOF
$cc $CFLAGS $LDFLAGS -o $TMPE $TMPC -llzo 2> /dev/null || lzo="no"
else
lzo="no"
fi
if test "$lzo" = "yes"; then
extralibs="$extralibs -llzo"
fi

# test for lrintf in math.h
cat > $TMPC << EOF
#define _ISOC9X_SOURCE  1
#include <math.h>
int main( void ) { return (lrintf(3.999f) > 0)?0:1; }
EOF

have_lrintf="no"
if $cc $CFLAGS $LDFLAGS -o $TMPE $TMPC $extralibs 2> /dev/null ; then
  have_lrintf="yes"
  # [e-mail]: cannot execute cross-compiled
  # code on the host.  Only execute if not cross-compiling.
  if test -z "$cross_prefix" ; then
    $TMPE 2> /dev/null > /dev/null || have_lrintf="no"
  fi
fi

_restrict=
for restrict_keyword in restrict __restrict__ __restrict; do
  echo "void foo(char * $restrict_keyword p);" > $TMPC
  if $cc -c -o $TMPO $TMPC 2> /dev/null; then
    _restrict=$restrict_keyword
    break;
  fi
done

# test gcc version to see if vector builtins can be used
# currently only used on i386 for MMX builtins
cat > $TMPC << EOF
#include <xmmintrin.h>
int main(void) {
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
return 0;
#else
#error no vector builtins
#endif
}
EOF

builtin_vector=no
if $cc -msse -o $TMPO $TMPC 2> /dev/null ; then
  builtin_vector=yes
fi

# test for mm3dnow.h
cat > $TMPC << EOF
#include <mm3dnow.h>
int main(void) {
return 0;
}
EOF

mm3dnow=no
if $cc -march=athlon -o $TMPO $TMPC 2> /dev/null ; then
  mm3dnow=yes
fi

# Probe for -Wdeclaration-after-statement
if test "$cc" = "gcc"; then
  cat > $TMPC << EOF
  int main( void ) { return 0; }
EOF

  if $cc -Wdeclaration-after-statement -Werror -o $TMPE $TMPC 2> /dev/null ; then
    CFLAGS="$CFLAGS -Wdeclaration-after-statement"
  fi
fi

# dlopen/dlfcn.h probing

cat > $TMPC << EOF
#include <dlfcn.h>
int main( void ) { return (int) dlopen("foo", 0); }
EOF

ldl=-ldl

if $cc $CFLAGS $LDFLAGS -o $TMPE $TMPC -ldl > /dev/null 2>&1 ; then
dlfcn=yes
dlopen=yes
fi

if $cc $CFLAGS $LDFLAGS -o $TMPE $TMPC > /dev/null 2>&1 ; then
dlfcn=yes
dlopen=yes
ldl=""
fi

cat > $TMPC << EOF
int main( void ) { return (int) dlopen("foo", 0); }
EOF

if $cc $CFLAGS $LDFLAGS -o $TMPE $TMPC -ldl > /dev/null 2>&1  ; then
dlopen=yes
fi

if $cc $CFLAGS $LDFLAGS -o $TMPE $TMPC > /dev/null 2>&1  ; then
dlopen=yes
ldl=""
fi

if test "$vhook" = "default" ; then
  vhook="$dlopen"
fi

if test "$vhook" = "yes" -o "$a52bin" = "yes" -o "$faadbin" = "yes"; then
  extralibs="$extralibs $ldl"
fi


##########################################
# imlib check

cat > $TMPC << EOF
#include <X11/Xlib.h>
#include <Imlib2.h>
int main( void ) { return (int) imlib_load_font("foo"); }
EOF

imlib2=no
if $cc $CFLAGS $LDFLAGS -o $TMPE $TMPC -lImlib2 -lm > /dev/null 2>&1  ; then
imlib2=yes
fi

##########################################
# FreeType check

cat > $TMPC << EOF
#include <ft2build.h>
int main( void ) { return (int) FT_Init_FreeType(0); }
EOF

freetype2=no
if test "x$targetos" != "xBeOS"; then
  if (freetype-config --version) >/dev/null 2>&1 ; then
    if $cc -o $TMPE $TMPC `freetype-config --cflags` `freetype-config --libs`  > /dev/null 2>&1 ; then
      freetype2=yes
    fi
  fi
fi

##########################################
# SDL check

cat > $TMPC << EOF
#include <SDL.h>
#undef main /* We don't want SDL to override our main() */
int main( void ) { return SDL_Init (SDL_INIT_VIDEO); }
EOF

sdl_too_old=no
sdl=no
SDL_CONFIG="${cross_prefix}sdl-config"
if ("${SDL_CONFIG}" --version) >/dev/null 2>&1 ; then
if $cc -o $TMPE `"${SDL_CONFIG}" --cflags` $TMPC `"${SDL_CONFIG}" --libs`  > /dev/null 2>&1  ; then
_sdlversion=`"${SDL_CONFIG}" --version | sed 's/[^0-9]//g'`
if test "$_sdlversion" -lt 121 ; then
sdl_too_old=yes
else
sdl=yes
fi
fi
fi

##########################################
# texi2html check

texi2html=no
if (texi2html -version) >/dev/null 2>&1; then
texi2html=yes
fi

if test "$network" = "yes" ; then
##########################################
# IPv6 check

cat > $TMPC << EOF
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
int main( void ) {
  struct sockaddr_storage saddr;
  struct ipv6_mreq mreq6;
  getaddrinfo(0,0,0,0);
  getnameinfo(0,0,0,0,0,0,0);
  IN6_IS_ADDR_MULTICAST((const struct in6_addr *)0);
}
EOF

ipv6=no
if $cc -o $TMPE $TMPC > /dev/null 2>&1  ; then
ipv6=yes
fi
fi

if test "$v4l2" = "yes"; then
# check for video4linux2 --- V4L2_PIX_FMT_YUV420
cat > $TMPC << EOF
#include <sys/time.h>
#include <linux/videodev.h>
int dummy = V4L2_PIX_FMT_YUV420;
EOF
$cc -c -o $TMPE $TMPC 2> /dev/null || v4l2="no"
fi

case "`$cc -v 2>&1 | grep version`" in
    *gcc*)
        CFLAGS="-Wall -Wno-switch $CFLAGS"
        ;;
    *)
        ;;
esac

if test "$sdl" = "no" ; then
   ffplay=no
fi

if test "$debug" = "yes"; then
        CFLAGS="-g $CFLAGS"
fi

if test "$optimize" = "small"; then
#  CFLAGS=${CFLAGS//-O3/-Os}
  CFLAGS="$CFLAGS -Os"
fi

if test "$optimize" = "yes"; then
    if test -n "`$cc -v 2>&1 | grep xlc`"; then
        CFLAGS="$CFLAGS -O5"
        LDFLAGS="$LDFLAGS -O5"
    else
        CFLAGS="-O3 $CFLAGS"
    fi
fi

# PIC flags for shared library objects where they are needed
if test "$lshared" = "yes" ; then
  # LIBOBJFLAGS may have already been set in the OS configuration
  if test -z "$LIBOBJFLAGS" ; then
    if test "$cpu" = "x86_64" -o "$cpu" = "ia64" -o "$cpu" = "alpha" ; then
      LIBOBJFLAGS="\$(PIC)"
    fi
  fi
fi

if test x"$bindir" = x""; then
bindir="${prefix}/bin"
fi

if test x"$libdir" = x""; then
libdir="${prefix}/lib"
fi

if test x"$incdir" = x""; then
incdir="${prefix}/include/ffmpeg"
fi

if test x"$mandir" = x""; then
mandir="${prefix}/man"
fi

echo "install prefix   $prefix"
echo "source path      $source_path"
echo "C compiler       $cc"
echo "make             $make"
echo "CPU              $cpu ($tune)"
if test "$BUILDSUF" != ""; then
echo "build suffix     $BUILDSUF"
fi
echo "big-endian       $bigendian"
echo "inttypes.h       $inttypes"
echo "broken inttypes.h $emu_fast_int"
if test $cpu = "x86" -o $cpu = "x86_64"; then
echo "MMX enabled      $mmx"
echo "Vector Builtins  $builtin_vector"
echo "3DNow! Builtins  $mm3dnow"
fi
if test $cpu = "armv4l"; then
echo "IWMMXT enabled   $iwmmxt"
fi
if test $cpu = "mips"; then
echo "MMI enabled      $mmi"
fi
if test $cpu = "powerpc"; then
echo "AltiVec enabled  $altivec"
fi
echo "gprof enabled    $gprof"
echo "zlib enabled     $zlib"
echo "lzo enabled      $lzo"
echo "libgsm enabled   $libgsm"
echo "mp3lame enabled  $mp3lame"
echo "libogg enabled   $libogg"
echo "Vorbis enabled   $vorbis"
echo "Theora enabled   $theora"
echo "FAAD enabled     $faad"
echo "faadbin enabled  $faadbin"
echo "FAAC enabled     $faac"
echo "XviD enabled     $xvid"
echo "x264 enabled     $x264"
echo "a52 support      $a52"
echo "a52 dlopened     $a52bin"
echo "DTS support      $dts"
echo "pp support       $pp"
echo "debug symbols    $debug"
echo "strip symbols    $dostrip"
echo "optimize         $optimize"
echo "static           $lstatic"
echo "shared           $lshared"
echo "video hooking    $vhook"
echo "SDL support      $sdl"
if test $sdl_too_old = "yes"; then
echo "-> Your SDL version is too old - please upgrade to have FFplay/SDL support."
fi

if test "$vhook" = "yes" ; then
echo "Imlib2 support   $imlib2"
echo "FreeType support $freetype2"
fi
echo "Sun medialib support"  $sunmlib
echo "pthreads support"      $pthreads
echo "AMR-NB float support"  $amr_nb
echo "AMR-NB fixed support"  $amr_nb_fixed
echo "AMR-WB float support"  $amr_wb
echo "AMR-WB IF2 support"    $amr_if2
echo "network support      $network"
if test "$network" = "yes" ; then
echo "IPv6 support         $ipv6"
fi
if test "$gpl" = "no" ; then
echo "License: LGPL"
else
echo "License: GPL"
fi

echo "Creating config.mak and config.h..."

date >> config.log
echo "   $0 $FFMPEG_CONFIGURATION" >> config.log
echo "# Automatically generated by configure - do not modify!" > config.mak
echo "/* Automatically generated by configure - do not modify! */" > $TMPH
echo "#define FFMPEG_CONFIGURATION "'"'"$FFMPEG_CONFIGURATION"'"' >> $TMPH

echo "prefix=\$(DESTDIR)$prefix" >> config.mak
echo "libdir=\$(DESTDIR)$libdir" >> config.mak
echo "incdir=\$(DESTDIR)$incdir" >> config.mak
echo "bindir=\$(DESTDIR)$bindir" >> config.mak
echo "mandir=\$(DESTDIR)$mandir" >> config.mak
echo "MAKE=$make" >> config.mak
echo "CC=$cc" >> config.mak
echo "AR=$ar" >> config.mak
echo "RANLIB=$ranlib" >> config.mak
if test "$dostrip" = "yes" ; then
echo "STRIP=$strip" >> config.mak
echo "INSTALLSTRIP=$installstrip" >> config.mak
else
echo "STRIP=echo ignoring strip" >> config.mak
echo "INSTALLSTRIP=" >> config.mak
fi

# SHCFLAGS is a copy of CFLAGS without -mdynamic-no-pic, used when building
# shared modules on OS/X (vhook/Makefile).
SHCFLAGS=$CFLAGS
if test "$needmdynamicnopic" = yes; then
   CFLAGS="$CFLAGS -mdynamic-no-pic"
fi

echo "OPTFLAGS=$CFLAGS" >> config.mak
echo "SHCFLAGS=$SHCFLAGS">>config.mak
echo "LDFLAGS=$LDFLAGS" >> config.mak
echo "LDCONFIG=$LDCONFIG" >> config.mak
echo "FFSLDFLAGS=$FFSLDFLAGS" >> config.mak
echo "SHFLAGS=$SHFLAGS" >> config.mak
echo "LIBOBJFLAGS=$LIBOBJFLAGS" >> config.mak
echo "BUILD_STATIC=$lstatic" >> config.mak
echo "BUILDSUF=$BUILDSUF" >> config.mak
echo "LIBPREF=$LIBPREF" >> config.mak
echo "LIBSUF=\${BUILDSUF}$LIBSUF" >> config.mak
if test "$lstatic" = "yes" ; then
  echo "LIB=$LIB" >> config.mak
else # Some Make complain if this variable does not exist.
  echo "LIB=" >> config.mak
fi
echo "SLIBPREF=$SLIBPREF" >> config.mak
echo "SLIBSUF=\${BUILDSUF}$SLIBSUF" >> config.mak
echo "EXESUF=\${BUILDSUF}$EXESUF" >> config.mak
echo "TARGET_OS=$TARGET_OS" >> config.mak
if test "$cpu" = "x86" ; then
  echo "TARGET_ARCH_X86=yes" >> config.mak
  echo "#define ARCH_X86 1" >> $TMPH
elif test "$cpu" = "x86_64" ; then
  echo "TARGET_ARCH_X86_64=yes" >> config.mak
  echo "#define ARCH_X86_64 1" >> $TMPH
elif test "$cpu" = "armv4l" ; then
  echo "TARGET_ARCH_ARMV4L=yes" >> config.mak
  echo "#define ARCH_ARMV4L 1" >> $TMPH
elif test "$cpu" = "alpha" ; then
  echo "TARGET_ARCH_ALPHA=yes" >> config.mak
  echo "#define ARCH_ALPHA 1" >> $TMPH
elif test "$cpu" = "sparc64" ; then
  echo "TARGET_ARCH_SPARC64=yes" >> config.mak
  echo "#define ARCH_SPARC64 1" >> $TMPH
  echo "TARGET_ARCH_SPARC=yes" >> config.mak
  echo "#define ARCH_SPARC 1" >> $TMPH
elif test "$cpu" = "sparc" ; then
  echo "TARGET_ARCH_SPARC=yes" >> config.mak
  echo "#define ARCH_SPARC 1" >> $TMPH
elif test "$cpu" = "powerpc" ; then
  echo "TARGET_ARCH_POWERPC=yes" >> config.mak
  echo "#define ARCH_POWERPC 1" >> $TMPH
  if test $POWERPCMODE = "32bits"; then
    echo "#define POWERPC_MODE_32BITS 1" >> $TMPH
  else
    echo "#define POWERPC_MODE_64BITS 1" >> $TMPH
  fi
  if test "$powerpc_perf" = "yes"; then
    echo "#define POWERPC_PERFORMANCE_REPORT 1" >> $TMPH
  fi
elif test "$cpu" = "mips" ; then
  echo "TARGET_ARCH_MIPS=yes" >> config.mak
  echo "#define ARCH_MIPS 1" >> $TMPH
elif test "$cpu" = "sh4" ; then
  echo "TARGET_ARCH_SH4=yes" >> config.mak
  echo "#define ARCH_SH4 1" >> $TMPH
elif test "$cpu" = "parisc" ; then
  echo "TARGET_ARCH_PARISC=yes" >> config.mak
  echo "#define ARCH_PARISC 1" >> $TMPH
elif test "$cpu" = "s390" ; then
  echo "TARGET_ARCH_S390=yes" >> config.mak
  echo "#define ARCH_S390 1" >> $TMPH
elif test "$cpu" = "m68k" ; then
  echo "TARGET_ARCH_M68K=yes" >> config.mak
  echo "#define ARCH_M68K 1" >> $TMPH
elif test "$cpu" = "ia64" ; then
  echo "TARGET_ARCH_IA64=yes" >> config.mak
  echo "#define ARCH_IA64 1" >> $TMPH
fi
echo "#define TUNECPU $TUNECPU" >> $TMPH
if test "$bigendian" = "yes" ; then
  echo "WORDS_BIGENDIAN=yes" >> config.mak
  echo "#define WORDS_BIGENDIAN 1" >> $TMPH
fi
if test "$inttypes" != "yes" ; then
  echo "#define EMULATE_INTTYPES 1" >> $TMPH
fi
if test "$emu_fast_int" = "yes" ; then
  echo "#define EMULATE_FAST_INT 1" >> $TMPH
fi
if test "$mmx" = "yes" ; then
  echo "TARGET_MMX=yes" >> config.mak
  echo "#define HAVE_MMX 1" >> $TMPH
  echo "#define __CPU__ 586" >> $TMPH
fi
if test "$builtin_vector" = "yes" ; then
  echo "TARGET_BUILTIN_VECTOR=yes" >> config.mak
  echo "#define HAVE_BUILTIN_VECTOR 1" >> $TMPH
fi
if test "$mm3dnow" = "yes" ; then
  echo "TARGET_BUILTIN_3DNOW=yes" >> config.mak
  echo "#define HAVE_MM3DNOW 1" >> $TMPH
fi
if test "$iwmmxt" = "yes" ; then
  echo "TARGET_IWMMXT=yes" >> config.mak
  echo "#define HAVE_IWMMXT 1" >> $TMPH
fi
if test "$mmi" = "yes" ; then
  echo "TARGET_MMI=yes" >> config.mak
  echo "#define HAVE_MMI 1" >> $TMPH
fi
if test "$altivec" = "yes" ; then
  echo "TARGET_ALTIVEC=yes" >> config.mak
  echo "#define HAVE_ALTIVEC 1" >> $TMPH
  echo "// Enable the next line to use the reference C code instead of AltiVec" >> $TMPH
  echo "// #define ALTIVEC_USE_REFERENCE_C_CODE 1" >> $TMPH
  if test "$_altivec_h" = "yes" ; then
    echo "#define HAVE_ALTIVEC_H 1" >> $TMPH
  else
    echo "#undef HAVE_ALTIVEC_H" >> $TMPH
  fi
fi
if test "$gprof" = "yes" ; then
  echo "TARGET_GPROF=yes" >> config.mak
  echo "#define HAVE_GPROF 1" >> $TMPH
fi
if test "$localtime_r" = "yes" ; then
  echo "#define HAVE_LOCALTIME_R 1" >> $TMPH
fi
if test "$imlib2" = "yes" ; then
  echo "HAVE_IMLIB2=yes" >> config.mak
fi
if test "$freetype2" = "yes" ; then
  echo "HAVE_FREETYPE2=yes" >> config.mak
fi
if test "$sunmlib" = "yes" ; then
  echo "HAVE_MLIB=yes" >> config.mak
  echo "#define HAVE_MLIB 1" >> $TMPH
  extralibs="$extralibs -lmlib"
fi
if test "$pthreads" = "yes" ; then
  echo "HAVE_PTHREADS=yes" >> config.mak
  echo "#define HAVE_PTHREADS 1" >> $TMPH
  echo "#define HAVE_THREADS 1" >> $TMPH
  if test $targetos != FreeBSD -a $targetos != OpenBSD ; then
     extralibs="$extralibs -lpthread"
  fi