]> git.sesse.net Git - x264/blobdiff - configure
Eliminate intentional array overflow in quant matrix handling
[x264] / configure
index e8b57ebe7ebf45064cf081b98ff5fad8c74f7fd0..e9ff21ceb41bc2b90de577c5876c74b24f75a151 100755 (executable)
--- a/configure
+++ b/configure
@@ -7,10 +7,12 @@ echo ""
 echo "available options:"
 echo ""
 echo "  --help                   print this message"
-echo "  --disable-avis-input     disables avisynth input (win32 only)"
+echo "  --disable-avs-input      disables avisynth input (win32 only)"
+echo "  --disable-lavf-input     disables libavformat input"
+echo "  --disable-ffms-input     disables ffmpegsource input"
 echo "  --disable-mp4-output     disables mp4 output (using gpac)"
 echo "  --disable-pthread        disables multithreaded encoding"
-echo "  --disable-asm            disables assembly optimizations on x86"
+echo "  --disable-asm            disables assembly optimizations on x86 and arm"
 echo "  --enable-debug           adds -g, doesn't strip"
 echo "  --enable-gprof           adds -pg, doesn't strip"
 echo "  --enable-visualize       enables visualization (X11 only)"
@@ -20,25 +22,26 @@ echo "  --extra-asflags=EASFLAGS add EASFLAGS to ASFLAGS"
 echo "  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS"
 echo "  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS"
 echo "  --host=HOST              build programs to run on HOST"
+echo "  --cross-prefix=PREFIX    use PREFIX for compilation tools"
 echo ""
 exit 1
 fi
 
 cc_check() {
-    cat > conftest.c << EOF
-#include <$1>
-int main () { $3 return 0; }
-EOF
-    $CC conftest.c $CFLAGS $LDFLAGS $2 -o conftest 2>$DEVNULL
-    TMP="$?"
-    return $TMP
+    rm -f conftest.c
+    [ -n "$1" ] && echo "#include <$1>" > conftest.c
+    echo "int main () { $3 return 0; }" >> conftest.c
+    $CC conftest.c $CFLAGS $LDFLAGS $LDFLAGSCLI $2 -o conftest 2>$DEVNULL
 }
 
 as_check() {
     echo "$1" > conftest.asm
     $AS conftest.asm $ASFLAGS $2 -o conftest.o 2>$DEVNULL
-    TMP="$?"
-    return $TMP
+}
+
+die() {
+    echo "$@"
+    exit 1
 }
 
 rm -f config.h config.mak x264.pc conftest*
@@ -50,7 +53,9 @@ libdir='${exec_prefix}/lib'
 includedir='${prefix}/include'
 DEVNULL='/dev/null'
 
-avis_input="auto"
+avs_input="auto"
+lavf_input="auto"
+ffms_input="auto"
 mp4_output="auto"
 pthread="auto"
 asm="yes"
@@ -60,13 +65,12 @@ pic="no"
 vis="no"
 shared="no"
 
-CC="${CC-gcc}"
 CFLAGS="$CFLAGS -Wall -I."
 LDFLAGS="$LDFLAGS"
+LDFLAGSCLI="$LDFLAGSCLI"
+ASFLAGS="$ASFLAGS"
 HAVE_GETOPT_LONG=1
-
-AS=""
-ASFLAGS=""
+cross_prefix=""
 
 EXE=""
 
@@ -96,11 +100,23 @@ for opt do
         --disable-asm)
             asm="no"
             ;;
-        --enable-avis-input)
-            avis_input="yes"
+        --enable-avs-input)
+            avs_input="auto"
+            ;;
+        --disable-avs-input)
+            avs_input="no"
             ;;
-        --disable-avis-input)
-            avis_input="no"
+        --enable-lavf-input)
+            lavf_input="auto"
+            ;;
+        --disable-lavf-input)
+            lavf_input="no"
+            ;;
+        --enable-ffms-input)
+            ffms_input="auto"
+            ;;
+        --disable-ffms-input)
+            ffms_input="no"
             ;;
         --enable-mp4-output)
             mp4_output="yes"
@@ -145,12 +161,20 @@ for opt do
         --host=*)
             host="${opt#--host=}"
             ;;
+        --cross-prefix=*)
+            cross_prefix="${opt#--cross-prefix=}"
+            ;;
         *)
             echo "Unknown option $opt, ignored"
             ;;
     esac
 done
 
+CC="${CC-${cross_prefix}gcc}"
+AR="${AR-${cross_prefix}ar}"
+RANLIB="${RANLIB-${cross_prefix}ranlib}"
+STRIP="${STRIP-${cross_prefix}strip}"
+
 if [ "x$host" = x ]; then
     host=`./config.guess`
 fi
@@ -171,9 +195,9 @@ case $host_os in
   darwin*)
     SYS="MACOSX"
     CFLAGS="$CFLAGS -falign-loops=16"
-    LDFLAGS="$LDFLAGS -lm -lmx"
+    LDFLAGS="$LDFLAGS -lm"
     if [ "$pic" = "no" ]; then
-        CFLAGS="$CFLAGS -mdynamic-no-pic"
+        cc_check "" -mdynamic-no-pic && CFLAGS="$CFLAGS -mdynamic-no-pic"
     fi
     ;;
   freebsd*)
@@ -194,17 +218,19 @@ case $host_os in
     CFLAGS="$CFLAGS -I/usr/X11R6/include"
     LDFLAGS="$LDFLAGS -lm"
     ;;
-  linux*)
+  *linux*)
     SYS="LINUX"
     CFLAGS="$CFLAGS -DHAVE_MALLOC_H"
     LDFLAGS="$LDFLAGS -lm"
     ;;
   cygwin*)
     SYS="MINGW"
-    CFLAGS="$CFLAGS -mno-cygwin"
-    LDFLAGS="$LDFLAGS -mno-cygwin"
     EXE=".exe"
     DEVNULL="NUL"
+    if cc_check "" -mno-cygwin; then
+        CFLAGS="$CFLAGS -mno-cygwin"
+        LDFLAGS="$LDFLAGS -mno-cygwin"
+    fi
     ;;
   mingw*)
     SYS="MINGW"
@@ -218,8 +244,7 @@ case $host_os in
     HAVE_GETOPT_LONG=0
     ;;
   *)
-    echo "Unknown system $host, edit the configure"
-    exit 1
+    die "Unknown system $host, edit the configure"
     ;;
 esac
 
@@ -228,6 +253,12 @@ case $host_cpu in
     ARCH="X86"
     AS="yasm"
     ASFLAGS="$ASFLAGS -O2"
+    if [[ "$asm" == yes && "$CFLAGS" != *-march* ]]; then
+      CFLAGS="$CFLAGS -march=i686"
+    fi
+    if [[ "$asm" == yes && "$CFLAGS" != *-mfpmath* ]]; then
+      CFLAGS="$CFLAGS -mfpmath=sse -msse"
+    fi
     if [ "$SYS" = MACOSX ]; then
       ASFLAGS="$ASFLAGS -f macho -DPREFIX"
     elif [ "$SYS" = MINGW ]; then
@@ -241,19 +272,23 @@ case $host_cpu in
     AS="yasm"
     if [ "$SYS" = MACOSX ];then
       ASFLAGS="$ASFLAGS -f macho64 -m amd64 -DPIC -DPREFIX"
-      CFLAGS="$CFLAGS -arch x86_64"
-      LDFLAGS="$LDFLAGS -arch x86_64"
+      if cc_check '' "-arch x86_64"; then
+        CFLAGS="$CFLAGS -arch x86_64"
+        LDFLAGS="$LDFLAGS -arch x86_64"
+      fi
+    elif [ "$SYS" = MINGW ]; then
+      ASFLAGS="$ASFLAGS -f win32 -m amd64 -DPREFIX"
     else
-      ASFLAGS="-f elf -m amd64"
+      ASFLAGS="$ASFLAGS -f elf -m amd64"
     fi
     ;;
   powerpc|powerpc64)
     ARCH="PPC"
     if [ $SYS = MACOSX ]
     then
-      ALTIVECFLAGS="$ALTIVECFLAGS -faltivec -fastf -mcpu=G4"
+      CFLAGS="$CFLAGS -faltivec -fastf -mcpu=G4"
     else
-      ALTIVECFLAGS="$ALTIVECFLAGS -maltivec -mabi=altivec -DHAVE_ALTIVEC_H"
+      CFLAGS="$CFLAGS -maltivec -mabi=altivec -DHAVE_ALTIVEC_H"
     fi
     ;;
   sparc)
@@ -261,7 +296,7 @@ case $host_cpu in
       ARCH="UltraSparc"
       CFLAGS="$CFLAGS -mcpu=ultrasparc"
       LDFLAGS="$LDFLAGS -mcpu=ultrasparc"
-      AS="as"
+      AS="${cross_prefix}as"
       ASFLAGS="$ASFLAGS -xarch=v8plusa"
     else
       ARCH="Sparc"
@@ -272,6 +307,7 @@ case $host_cpu in
     ;;
   arm*)
     ARCH="ARM"
+    AS="${AS-${cross_prefix}gcc}"
     ;;
   s390|s390x)
     ARCH="S390"
@@ -286,29 +322,58 @@ esac
 
 # check requirements
 
-if [ $shared = yes -a \( $ARCH = "X86_64" -o $ARCH = "PPC" -o $ARCH = "ALPHA" \) ] ; then
+cc_check || die "No working C compiler found."
+
+if [ $shared = yes -a \( $ARCH = "X86_64" -o $ARCH = "PPC" -o $ARCH = "ALPHA" -o $ARCH = "ARM" \) ] ; then
     pic="yes"
 fi
 
 if [ $asm = yes -a \( $ARCH = X86 -o $ARCH = X86_64 \) ] ; then
-    if as_check "pinsrd xmm0, [esp], 0" ; then
-        CFLAGS="$CFLAGS -DHAVE_MMX"
-    else
+    if ! as_check "lzcnt eax, eax" ; then
         VER=`($AS --version || echo no assembler) 2>$DEVNULL | head -n 1`
         echo "Found $VER"
-        echo "Minimum version is yasm-0.6.1"
+        echo "Minimum version is yasm-0.6.2"
+        echo "If you really want to compile without asm, configure with --disable-asm."
+        exit 1
+    fi
+    if ! cc_check '' '' 'asm("pabsw %xmm0, %xmm0");' ; then
+        VER=`(as --version || echo no gnu as) 2>$DEVNULL | head -n 1`
+        echo "Found $VER"
+        echo "Minimum version is binutils-2.17"
+        echo "Your compiler can't handle inline SSSE3 asm."
         echo "If you really want to compile without asm, configure with --disable-asm."
         exit 1
     fi
+    CFLAGS="$CFLAGS -DHAVE_MMX"
 fi
+
+if [ $asm = yes -a $ARCH = ARM ] ; then
+    # set flags so neon is built by default
+    echo $CFLAGS | grep -Eq '(-mcpu|-march|-mfpu|-mfloat-abi)' || CFLAGS="$CFLAGS -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=softfp"
+
+    if  cc_check '' '' 'asm("rev ip, ip");' ; then      CFLAGS="$CFLAGS -DHAVE_ARMV6"
+        cc_check '' '' 'asm("movt r0, #0");'         && CFLAGS="$CFLAGS -DHAVE_ARMV6T2"
+        cc_check '' '' 'asm("vadd.i16 q0, q0, q0");' && CFLAGS="$CFLAGS -DHAVE_NEON"
+        ASFLAGS="$ASFLAGS $CFLAGS -c"
+    else
+        echo "You specified a pre-ARMv6 or Thumb-1 CPU in your CFLAGS."
+        echo "If you really want to run on such a CPU, configure with --disable-asm."
+        exit 1
+    fi
+fi
+
 [ $asm = no ] && AS=""
 [ "x$AS" = x ] && asm="no"
 
 CFLAGS="$CFLAGS -DARCH_$ARCH -DSYS_$SYS"
 
-echo "unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';" > conftest.c
+echo "int i = 0x42494745; double f = 0x1.0656e6469616ep+102;" > conftest.c
 $CC $CFLAGS conftest.c -c -o conftest.o 2>$DEVNULL || die "endian test failed"
-grep -q BIGE conftest.o && CFLAGS="$CFLAGS -DWORDS_BIGENDIAN"
+if grep -q BIGE conftest.o && grep -q FPendian conftest.o ; then
+    CFLAGS="$CFLAGS -DWORDS_BIGENDIAN"
+elif !(grep -q EGIB conftest.o && grep -q naidnePF conftest.o) ; then
+    die "endian test failed"
+fi
 
 # autodetect options that weren't forced nor disabled
 
@@ -330,8 +395,15 @@ if test "$pthread" = "auto" ; then
                 pthread="yes"
                 libpthread="-lpthreadGC2 -lwsock32"
                 CFLAGS="$CFLAGS -DPTW32_STATIC_LIB"
+            elif cc_check pthread.h "-lpthreadGC2 -lws2_32 -DPTW32_STATIC_LIB" "pthread_create(0,0,0,0);" ; then
+                pthread="yes"
+                libpthread="-lpthreadGC2 -lws2_32"
+                CFLAGS="$CFLAGS -DPTW32_STATIC_LIB"
             fi
             ;;
+        OPENBSD)
+            cc_check pthread.h -pthread && pthread="yes" && libpthread="-pthread"
+            ;;
         *)
             cc_check pthread.h -lpthread && pthread="yes" && libpthread="-lpthread"
             ;;
@@ -342,6 +414,48 @@ if test "$pthread" = "yes" ; then
     LDFLAGS="$LDFLAGS $libpthread"
 fi
 
+if [ "$lavf_input" = "auto" ] ; then
+    lavf_input="no"
+    if [ `pkg-config --exists libavformat libavcodec libswscale 2>$DEVNULL` ] ; then
+        LAVF_LDFLAGS="$LAVF_LDFLAGS $(pkg-config --libs libavformat libavcodec libswscale)"
+        LAVF_CDFLAGS="$LAVF_CFLAGS $(pkg-config --cflags libavformat libavcodec libswscale)"
+    fi
+    if [ -z "$LAVF_LDFLAGS" -a -z "$LAVF_CFLAGS" ]; then
+        LAVF_LDFLAGS="-lavformat -lswscale"
+        for lib in -lpostproc -lavcodec -lavutil -lm -lz -lbz2 $libpthread -lavifil32; do
+            cc_check "" $lib && LAVF_LDFLAGS="$LAVF_LDFLAGS $lib"
+        done
+    fi
+    LAVF_LDFLAGS="-L. $LAVF_LDFLAGS"
+    if cc_check libavformat/avformat.h "$LAVF_CFLAGS $LAVF_LDFLAGS" && \
+       cc_check libswscale/swscale.h "$LAVF_CFLAGS $LAVF_LDFLAGS" ; then
+        # avcodec_decode_video2 is currently the most recently added function that we use; it was added in r18351
+        if cc_check libavformat/avformat.h "$LAVF_CFLAGS $LAVF_LDFLAGS" "avcodec_decode_video2( NULL, NULL, NULL, NULL );" ; then
+            lavf_input="yes"
+            echo "#define LAVF_INPUT" >> config.h
+            LDFLAGSCLI="$LDFLAGSCLI $LAVF_LDFLAGS"
+            [ -n "$LAVF_CFLAGS" ] && CFLAGS="$CFLAGS $LAVF_CFLAGS"
+        else
+            echo "Warning: libavformat is too old, update to ffmpeg r18351+"
+        fi
+    fi
+fi
+
+if [ "$ffms_input" = "auto" ] ; then
+    ffms_input="no"
+    if [ "$lavf_input" = "yes" ] ; then
+        if cc_check ffms.h -lFFMS2 "FFMS_DestroyVideoSource(0);" ; then
+           ffms_input="yes"
+           echo "#define FFMS_INPUT" >> config.h
+           LDFLAGSCLI="$LDFLAGSCLI -lFFMS2"
+        elif cc_check ffms.h "-lFFMS2 $LAVF_LDFLAGS -lstdc++" "FFMS_DestroyVideoSource(0);" ; then
+           ffms_input="yes"
+           echo "#define FFMS_INPUT" >> config.h
+           LDFLAGSCLI="-lFFMS2 $LDFLAGSCLI -lstdc++"
+        fi
+    fi
+fi
+
 MP4_LDFLAGS="-lgpac_static"
 if [ $SYS = MINGW ]; then
     MP4_LDFLAGS="$MP4_LDFLAGS -lwinmm"
@@ -352,20 +466,20 @@ if [ "$mp4_output" = "auto" ] ; then
 fi
 if [ "$mp4_output" = "yes" ] ; then
     echo "#define MP4_OUTPUT" >> config.h
-    LDFLAGS="$LDFLAGS $MP4_LDFLAGS"
+    LDFLAGSCLI="$LDFLAGSCLI $MP4_LDFLAGS"
 fi
 
-if [ "$avis_input" = "auto" ] ; then
-    if [ $SYS = MINGW ]; then
-        avis_input="yes"
-    else
-        avis_input="no";
+if [ "$avs_input" = "auto" ] ; then
+    avs_input=no
+    if [ $SYS = MINGW ] && cc_check avisynth_c.h ; then
+        avs_input="yes"
+        echo "#define AVS_INPUT" >> config.h
+        echo "#define HAVE_AVISYNTH_C_H" >> config.h
+    elif [ $SYS = MINGW ] && cc_check extras/avisynth_c.h ; then
+        avs_input="yes"
+        echo "#define AVS_INPUT" >> config.h
     fi
 fi
-if [ "$avis_input" = "yes" ] ; then
-    echo "#define AVIS_INPUT" >> config.h
-    LDFLAGS="$LDFLAGS -lvfw32"
-fi
 
 if [ "$pic" = "yes" ] ; then
     CFLAGS="$CFLAGS -fPIC"
@@ -381,6 +495,10 @@ fi
 
 if [ "$debug" = "yes" ]; then
     CFLAGS="-O1 -g $CFLAGS"
+elif [ $ARCH = ARM ]; then
+    # arm-gcc-4.2 produces incorrect output with -ffast-math
+    # and it doesn't save any speed anyway on 4.4, so disable it
+    CFLAGS="-O4 -fno-fast-math $CFLAGS"
 else
     CFLAGS="-O4 -ffast-math $CFLAGS"
 fi
@@ -407,8 +525,11 @@ ARCH=$ARCH
 SYS=$SYS
 CC=$CC
 CFLAGS=$CFLAGS
-ALTIVECFLAGS=$ALTIVECFLAGS
 LDFLAGS=$LDFLAGS
+LDFLAGSCLI=$LDFLAGSCLI
+AR=$AR
+RANLIB=$RANLIB
+STRIP=$STRIP
 AS=$AS
 ASFLAGS=$ASFLAGS
 EXE=$EXE
@@ -460,7 +581,9 @@ EOF
 echo "Platform:   $ARCH"
 echo "System:     $SYS"
 echo "asm:        $asm"
-echo "avis input: $avis_input"
+echo "avs input:  $avs_input"
+echo "lavf input: $lavf_input"
+echo "ffms input: $ffms_input"
 echo "mp4 output: $mp4_output"
 echo "pthread:    $pthread"
 echo "debug:      $debug"