ubuntu 编译 ffmpeg For Android

1. 安装 虚拟机 ， 然后 ubuntu 18.04.4 (不知道为啥 20 不能用...  yum 一直失败)

2. sudo apt-get install gcc

3. sudo apt-get install yasm

4. sudo apt-get install pkg-config

5. chmod 777 configure             

    ./configure (WARNING: pkg-config not found, library detection may fail. ???)

6. sudo apt-get install update. 再 sudo apt-get install pkg-config 

7.  ./configure （这次成功了 ）

8. chmod 777 build_android.sh           

     ./build_android.sh

 

附录：  修改 configure

#SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'

#LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'

#SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'

#SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)’

 

SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'

LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'

SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'

SLIB_INSTALL_LINKS='$(SLIBNAME)'

 

写build_android.sh  

 

#!/bin/bash
export NDK_HOME=/home/matt/Downloads/android-ndk-r14b
export PLATFORM_VERSION=android-9
function build
{
    echo "start build ffmpeg for $ARCH"
    ./configure --target-os=linux \
    --prefix=$PREFIX --arch=$ARCH \
    --disable-doc \
    --enable-shared \
    --disable-static \
    --disable-yasm \
    --disable-asm \
    --disable-symver \
    --enable-gpl \
    --disable-ffmpeg \
    --disable-ffplay \
    --disable-ffprobe \
    --disable-ffserver \
    --cross-prefix=$CROSS_COMPILE \
    --enable-cross-compile \
    --sysroot=$SYSROOT \
    --enable-small \
    --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
    --extra-ldflags="$ADDI_LDFLAGS" \
    $ADDITIONAL_CONFIGURE_FLAG
    make clean
    make
    make install
    echo "build ffmpeg for $ARCH finished"
}

#arm
ARCH=arm
CPU=arm
PREFIX=$(pwd)/android/$ARCH
TOOLCHAIN=$NDK_HOME/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
CROSS_COMPILE=$TOOLCHAIN/bin/arm-linux-androideabi-
ADDI_CFLAGS="-marm"
SYSROOT=$NDK_HOME/platforms/$PLATFORM_VERSION/arch-$ARCH/
build

#x86
ARCH=x86
CPU=x86
PREFIX=$(pwd)/android/$ARCH
TOOLCHAIN=$NDK_HOME/toolchains/x86-4.9/prebuilt/linux-x86_64
CROSS_COMPILE=$TOOLCHAIN/bin/i686-linux-android-
ADDI_CFLAGS="-march=i686 -mtune=intel -mssse3 -mfpmath=sse -m32"
SYSROOT=$NDK_HOME/platforms/$PLATFORM_VERSION/arch-$ARCH/
build