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  • Building ffmpeg 3.3 with android-ndk-r14b

    23 mai 2017, par Priyo Chatterjee

    Changes made in configure file of ffmpeg :

    SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
    
LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
    
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
    
SLIB_INSTALL_LINKS='$(SLIBNAME)'

    build_configure.sh

    #!/bin/bash
    
  ######################################################
    
# Usage:
    
# put this script in top of FFmpeg source tree
    
# ./build_android
    
# It generates binary for following architectures:
    
# ARMv6
    
# ARMv6+VFP
    
# ARMv7+VFM-ïd16 (Tegra2)
    
# ARMv7+Neon (Cortex-A8)
    
# Customizing:
    
# 1. Feel free to change ./configure parameters for more features
    
# 2. To adapt other ARM variants
    
# set $CPU and $OPTIMIZE_CFLAGS
    
# call build_one
    
######################################################
    
NDK=$HOME/Fame/android-ndk-r14b
    
PLATFORM=$NDK/platforms/android-9/arch-arm/
    
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
    
function build_one
    
{
    
./configure --target-os=linux \
    
  --prefix=$PREFIX \
    
  --enable-cross-compile \
    
  --arch=arm \
    
  --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
    
  --cross-prefix=$PREBUILT/bin/arm-linux-androideabi-4.9 \
    
  --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
    
  --sysroot=$PLATFORM \
    
  --extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " \
    
  --disable-shared \
    
  --enable-static \
    
  --disable-everything \
    
  --enable-demuxer=mov \
    
  --enable-demuxer=h264 \
    
  --disable-ffplay \
    
  --enable-protocol=file \
    
  --enable-avformat \
    
  --enable-avcodec \
    
  --enable-decoder=rawvideo \
    
  --enable-decoder=mjpeg \
    
  --enable-decoder=h263 \
    
  --enable-decoder=h265 \
    
  --enable-decoder=mpeg4 \
    
  --enable-decoder=h264 \
    
  --enable-parser=h264 \
    
  --enable-parser=h265
    
  --enabled-network \
    
  --enable-zlib \
    
  --disable-avfilter \
    
  --disable-avdevice \
    
  --disable-yasm \
    
  --disable-ffmpeg
    
  --disable-ffprobe
    
  --disable-ffserver
    
  $ADDITIONAL_CONFIGURE_FLAG
    

    
make clean
    
make  -j4 install
    
$PREBUILT/bin/arm-linux-androideabi-ar d libavcodec/libavcodec.a inverse.o
    
$PREBUILT/bin/arm-linux-androideabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib \
    
-soname libffmpeg.so -nostdlib,noexecstack -Bsymbolic \
    
--whole-archive --no-undefined \
    
-o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a \
    
libavutil/libavutil.a libswscale/libswscale.a \
    
$PLATFORM/usr/lib/libc.so $PLATFORM/usr/lib/libm.so \
    
$PLATFORM/usr/lib/libz.so \
    
$PLATFORM/usr/lib/libdl.so $PLATFORM/usr/lib/liblog.so \
    
--dynamic-linker=/system/bin/linker \
    
$PREBUILT/lib/gcc/arm-linux-androideabi/4.9/libgcc.a
    
}
    

    
#arm v6
    
#CPU=armv6
    
#OPTIMIZE_CFLAGS="-marm -march=$CPU"
    
#PREFIX=./android/$CPU
    
#ADDITIONAL_CONFIGURE_FLAG=
    
#build_one
    

    
#arm v7vfpv3
    
CPU=armv7-a
    
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
    
PREFIX=./android/$CPU
    
ADDITIONAL_CONFIGURE_FLAG=
    
build_one
    

    
#arm v7vfp
    
#CPU=armv7-a
    
#OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU "
    
#PREFIX=./android/$CPU-vfp
    
#ADDITIONAL_CONFIGURE_FLAG=
    
#build_one
    

    
#arm v7n
    
#CPU=armv7-a
    
#OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=neon -marm -march=$CPU -mtune=cortex-a8"
    
#PREFIX=./android/$CPU
    
#ADDITIONAL_CONFIGURE_FLAG=--enable-neon
    
#build_one
    

    
#arm v6+vfp
    
#CPU=armv6
    
#OPTIMIZE_CFLAGS="-DCMP_HAVE_VFP -mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU"
    
#PREFIX=./android/${CPU}_vfp
    
#ADDITIONAL_CONFIGURE_FLAG=
    
#build_one

    Error in the console I am getting :
    ./build_android.sh

    ./configure : 466 : ./configure : cannot create ffbuild/config.log : Directory nonexistent
    ./configure : 466 : ./configure : cannot create ffbuild/config.log : Directory nonexistent
    /bin/arm-linux-androideabi-gcc is unable to create an executable file.
    C compiler test failed.

  • How to avoid the "text relocation" error by ffmpeg library on Android x86

    16 octobre 2017, par Tank2005

    My environment is Qt 5.9 for Android on Windows 10 64bit. NDK is r10e and SDK Level is 16(Those sdks are recommended version by Qt development team).

    I built a ffmpeg 3.4 source code as .so files on Ubuntu 16.04.3 LTS. Those library has no error on ARM architecture Android. But, on x86 Emulator, "Text realocations" alart is shown like this.

    text relocations

    I rewrite configure with "disable-asm, disable-yasm" referd from this site’s old posts.

    This hereby removed some errors. But only one library has a problem.
    text relocations

    I also tried the method of deleting "strtod.o", But it seems no effect. My current build configure is that. Does anyone know a better way ?

    #!/bin/bash
    
NDK=/home/my/data/ndk
    
SYSROOT=$NDK/platforms/android-14/arch-x86/
    
TOOLCHAIN=$NDK/linux-x86-48
    
CPU=x86
    
PREFIX=$(pwd)/android/x86
    
PATH=$TOOLCHAIN/bin:$PATH
    

    
function build_one
    
{
    
./configure \
    
    --cc="$TOOLCHAIN/bin/i686-linux-android-gcc-4.8" \
    
    --enable-cross-compile \
    
    --target-os=linux \
    
    --arch=x86 \
    
    --prefix=$PREFIX \
    
    --enable-shared \
    
    --disable-static \
    
    --disable-avdevice \
    
    --disable-doc \
    
    --disable-encoders \
    
    --disable-decoders \
    
    --enable-decoder=h264 \
    
    --enable-decoder=aac \
    
    --disable-protocols \
    
    --disable-demuxers \
    
    --disable-muxers \
    
    --disable-filters \
    
    --disable-network \
    
    --disable-ffplay \
    
    --disable-ffmpeg \
    
    --disable-ffprobe \
    
    --disable-ffserver \
    
    --enable-parsers \
    
    --cross-prefix=i686-linux-android- \
    
    --enable-cross-compile \
    
    --target-os=linux \
    
    --arch=x86 \
    
    --disable-doc \
    
    --sysroot=$SYSROOT \
    
    --disable-x86asm -disable-yasm --enable-pic \
    
    --extra-cflags="-std=c99 -O3 -Wall -fpic -pipe -DANDROID -DNDEBUG -march=atom -msse3 -ffast-math -mfpmath=sse" \
    
    --extra-ldflags='-lm -lz -Wl,--no-undefined -Wl,-z,noexecstack' \
    
    $ADDITIONAL_CONFIGURE_FLAG
    
make clean
    
rm -f $(pwd)/compat/strtod.o
    
rm -f $(pwd)/compat/strtod.d
    
make 
    
make install
    
}
    
build_one

  • Build FFMPEG under Cygwin in Windows OS for Android

    8 juin 2017, par Jun Kim

    For the past couple days, I have been trying hard to build FFMPEG for a Android project on Windows Operating System using android-ndk-14d using Cygwin.
    I have followed many tutorials out there, and I ahve encountered so many errors while building FFMPEG using build_android.sh.

    Here are the steps that I have taken so far.

    I downloaded Cygwin and configured all the dependencies that I need for building FFMPEG.

    I opened ffmpeg-3.3.1/configure file with a text editor, and changed to the following lines.

    SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
    
LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
    
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
    
SLIB_INSTALL_LINKS='$(SLIBNAME)'

    my build_android.sh is as below

    #!/bin/bash
    
NDK=C:/~/ndk-bundle
    
SYSROOT=$NDK/platforms/android-21/arch-arm/
    
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64
    
function build_one
    
{
    
./configure \
    
    --prefix=$PREFIX \
    
    --enable-shared \
    
    --disable-static \
    
    --disable-doc \
    
    --disable-ffmpeg \
    
    --disable-ffplay \
    
    --disable-ffprobe \
    
    --disable-ffserver \
    
    --disable-avdevice \
    
    --disable-doc \
    
    --disable-symver \
    
    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi-\
    
    --target-os=android \
    
    --arch=arm \
    
    --cpu=armv7-a \
    
    --enable-cross-compile \
    
    --sysroot=$SYSROOT \
    
    --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
    
    --extra-ldflags="$ADDI_LDFLAGS" \
    
    $ADDITIONAL_CONFIGURE_FLAG
    
make clean
    
make
    
make install
    
}
    
CPU=arm
    
PREFIX=$(pwd)/android/$CPU
    
ADDI_CFLAGS="-marm"
    
build_one

    I ran these commands

    dos2unix build_android.sh 
    
chmod +x build_android.sh
    
./build_android.sh

    and,,,currently getting this error

    c :/users/sonic/appdata/local/android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/p
    rebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-an
    droideabi/bin/ld.exe : error : libavutil/libavutil.so:1:1 : syntax error,
    unexpected ’ !’, exp ecting $end

    c :/users/sonic/appdata/local/android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/p
    rebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-an
    droideabi/bin/ld.exe : error : libavutil/libavutil.so : not an object or
    archive collect2.exe : error : ld returned 1 exit status
    make : *** [library.mak:94 : libswscale/libswscale-4.so] Error 1 LD

    libswscale/libswscale-4.so
    c :/users/sonic/appdata/local/android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/p
    rebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-an
    droideabi/bin/ld.exe : error : libavutil/libavutil.so:1:1 : syntax error,
    unexpected ’ !’, exp ecting $end

    c :/users/sonic/appdata/local/android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/p
    rebuilt/windows-x86_64/bin/../lib/gcc/arm-linux->androideabi/4.9.x/../../../../arm-linux-an
    droideabi/bin/ld.exe : error : libavutil/libavutil.so : not an object or
    archive collect2.exe : error : ld returned 1 exit status make : ***
    [library.mak:94 : libswscale/libswscale-4.so] Error 1

    How to compile ffmpeg-2.5.3 on windows with android-ndk-r10d

    From the comments that were commented on the above link, it seems like it is
    easier to build FFMPEG in Linux/Unix OS. My first can be a dumb question. But If there is anyone who can guide me through this, i will be really appreciated it.

    If I build FFMPEG on Linux for Android, could I possibly copy or move those
    resulted output (The arm/lib folder contains the shared libraries, while arm/include folder contains the header files for libavcodec, libavformat, libavfilter, libavutil, libswscale etc.) to Windows OS and utilize them for
    my Android project ?

    Since my company only provides Windows OS for a project, I have to utilize them on Windows OS.

    Thank you for your time, and if there is any feedback that you can provide it will definitely be helpful.

    For the reference, here is my config.log

    END c :/ffmpegtmp/ffconf.qoBF6X98.c
    C :/Users/sonic/AppData/Local/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64/bin/arm-linux-androideabi-gcc —sysroot=C :/Users/sonic/AppData/Local/Android/sdk/ndk-bundle/platforms/android-9/arch-arm/

    -isysroot C :/Users/sonic/AppData/Local/Android/sdk/ndk-bundle/platforms/android-9/arch-arm/
    -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -Os -fpic -marm -march=armv7-a -std=c11 -fomit-frame-pointer -fPIC -marm -pthread -g -Wdeclaration-after-statement -Wall -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wwrite-strings -Wtype-limits -Wundef -Wmissing-prototypes -Wno-pointer-to-int-cast -Wstrict-prototypes -Wempty-body -Wno-parentheses -Wno-switch -Wno-format-zero-length -Wno-pointer-sign -O3 -fno-math-errno -fno-signed-zeros -fno-tree-vectorize -Werror=format-security -Werror=implicit-function-declaration -Werror=missing-prototypes -Werror=return-type -Werror=vla -Wformat -c -o c :/ffmpegtmp/ffconf.8joa74tC.o

    c :/ffmpegtmp/ffconf.qoBF6X98.c
    check_cflags -fdiagnostics-color=auto test_cflags
    -fdiagnostics-color=auto check_cc -fdiagnostics-color=auto BEGIN c :/ffmpegtmp/ffconf.qoBF6X98.c
    1 int x ; END c :/ffmpegtmp/ffconf.qoBF6X98.c C :/Users/sonic/AppData/Local/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64/bin/arm-linux-androideabi-gcc —sysroot=C :/Users/sonic/AppData/Local/Android/sdk/ndk-bundle/platforms/android-9/arch-arm/

    -isysroot C :/Users/sonic/AppData/Local/Android/sdk/ndk-bundle/platforms/android-9/arch-arm/
    -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -Os -fpic -marm -march=armv7-a -std=c11 -fomit-frame-pointer -fPIC -marm -pthread -g -Wdeclaration-after-statement -Wall -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wwrite-strings -Wtype-limits -Wundef -Wmissing-prototypes -Wno-pointer-to-int-cast -Wstrict-prototypes -Wempty-body -Wno-parentheses -Wno-switch -Wno-format-zero-length -Wno-pointer-sign -O3 -fno-math-errno -fno-signed-zeros -fno-tree-vectorize -Werror=format-security -Werror=implicit-function-declaration -Werror=missing-prototypes -Werror=return-type -Werror=vla -Wformat -fdiagnostics-color=auto -c -o c :/ffmpegtmp/ffconf.8joa74tC.o c :/ffmpegtmp/ffconf.qoBF6X98.c test_cflags -Wmaybe-uninitialized check_cc -Wmaybe-uninitialized BEGIN

    c :/ffmpegtmp/ffconf.qoBF6X98.c
    1 int x ; END c :/ffmpegtmp/ffconf.qoBF6X98.c C :/Users/sonic/AppData/Local/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64/bin/arm-linux-androideabi-gcc —sysroot=C :/Users/sonic/AppData/Local/Android/sdk/ndk-bundle/platforms/android-9/arch-arm/

    -isysroot C :/Users/sonic/AppData/Local/Android/sdk/ndk-bundle/platforms/android-9/arch-arm/
    -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -Os -fpic -marm -march=armv7-a -std=c11 -fomit-frame-pointer -fPIC -marm -pthread -g -Wdeclaration-after-statement -Wall -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wwrite-strings -Wtype-limits -Wundef -Wmissing-prototypes -Wno-pointer-to-int-cast -Wstrict-prototypes -Wempty-body -Wno-parentheses -Wno-switch -Wno-format-zero-length -Wno-pointer-sign -O3 -fno-math-errno -fno-signed-zeros -fno-tree-vectorize -Werror=format-security -Werror=implicit-function-declaration -Werror=missing-prototypes -Werror=return-type -Werror=vla -Wformat -fdiagnostics-color=auto -Wmaybe-uninitialized -c -o c :/ffmpegtmp/ffconf.8joa74tC.o c :/ffmpegtmp/ffconf.qoBF6X98.c

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