準備工作:
- 下載 FFMPEG
- 下載 android-ndk-r14b-MAC
配置configure
- 解壓下載到文件
- 找到configure文件,以文本方式打開,我這裏用到是Xcode打開,找到以下代碼,位置大概在3415行,或者使用control+F快速查找
-
SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)' LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"' SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)' SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
- 替換爲:
-
SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)' LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"' SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)' SLIB_INSTALL_LINKS='$(SLIBNAME)'
新建文件build_android.sh
- 配置build_android.sh,當前我只編譯arm64-v8a,如需編譯其他類型,直接去掉相應“#”即可
-
#!/bin/sh # build_android_arm64_v8a.sh # # # Created by Charlie on 2020/4/10. # #!/bin/bash #Change NDK to your Android NDK location #aarch64-linux-android-gcc is unable to create an executable file. #!/bin/bash MY_LIBS_NAME=ffmpeg-3.4.7 MY_DIR=ffmpeg-3.4.7 # cd ./${MY_DIR} #編譯的過程中產生的中間件的存放目錄,爲了區分編譯目錄,源碼目錄,install目錄 MY_BUILD_DIR=binary NDK_PATH=/Users/xxx(這是我的電腦文件名)/NDK/android-ndk-r14b BUILD_PLATFORM=darwin-x86_64 TOOLCHAIN_VERSION=4.9 ANDROID_VERSION=21 ANDROID_ARMV5_CFLAGS="-march=armv5te" ANDROID_ARMV7_CFLAGS="-march=armv7-a -mfloat-abi=softfp -mfpu=neon" #-mfloat-abi=hard -mfpu=vfpv3-d16 #-mfloat-abi=hard -mfpu=vfp ANDROID_ARMV8_CFLAGS="-march=armv8-a" ANDROID_X86_CFLAGS="-march=i686 -mtune=intel -mssse3 -mfpmath=sse -m32" ANDROID_X86_64_CFLAGS="-march=x86-64 -msse4.2 -mpopcnt -m64 -mtune=intel" # params($1:arch,$2:arch_abi,$3:host,$4:cross_prefix,$5:cflags) build_bin() { echo "-------------------star build $2-------------------------" ARCH=$1 # arm arm64 x86 x86_64 ANDROID_ARCH_ABI=$2 # armeabi armeabi-v7a x86 mips PREFIX=$(pwd)/dist/${MY_LIBS_NAME}/${ANDROID_ARCH_ABI}/ HOST=$3 SYSROOT=${NDK_PATH}/platforms/android-${ANDROID_VERSION}/arch-${ARCH} CFALGS=$5 TOOLCHAIN=${NDK_PATH}/toolchains/${HOST}-${TOOLCHAIN_VERSION}/prebuilt/${BUILD_PLATFORM} CROSS_PREFIX=${TOOLCHAIN}/bin/$4- # build 中間件 BUILD_DIR=./${MY_BUILD_DIR}/${ANDROID_ARCH_ABI} echo "pwd==$(pwd)" echo "ARCH==${ARCH}" echo "PREFIX==${PREFIX}" echo "HOST==${HOST}" echo "SYSROOT=${SYSROOT}" echo "CFALGS=$5" echo "CFALGS=${CFALGS}" echo "TOOLCHAIN==${TOOLCHAIN}" echo "CROSS_PREFIX=${CROSS_PREFIX}" #echo "-------------------------按任意鍵繼續---------------------" #read -n 1 #echo "-------------------------繼續執行-------------------------" # mkdir -p ${BUILD_DIR} #創建當前arch_abi的編譯目錄,比如:binary/armeabi-v7a # cd ${BUILD_DIR} #此處 進了當前arch_abi的2級編譯目錄 bash ./configure \ --prefix=${PREFIX} \ --target-os=android \ --arch=${ARCH} \ --sysroot=$SYSROOT \ --enable-cross-compile \ --cross-prefix=${CROSS_PREFIX} \ --extra-cflags="$CFALGS -Os -fPIC -DANDROID -Wfatal-errors -Wno-deprecated" \ --extra-cxxflags="-D__thumb__ -fexceptions -frtti" \ --extra-ldflags="-L${SYSROOT}/usr/lib" \ --enable-shared \ --enable-runtime-cpudetect \ --enable-gpl \ --enable-small \ --enable-cross-compile \ --disable-debug \ --disable-static \ --disable-doc \ --disable-ffmpeg \ --disable-ffplay \ --disable-ffprobe \ --disable-postproc \ --disable-avdevice \ --disable-symver \ --disable-stripping make clean make make install #從當前arch_abi編譯目錄跳出,對應上面的cd ${BUILD_DIR},以便function多次執行 cd ../../ echo "-------------------$2 build end-------------------------" } # build armeabi # build_bin arm armeabi arm-linux-androideabi arm-linux-androideabi "$ANDROID_ARMV5_CFLAGS" #build armeabi-v7a # build_bin arm armeabi-v7a arm-linux-androideabi arm-linux-androideabi "$ANDROID_ARMV7_CFLAGS" #build arm64-v8a build_bin arm64 arm64-v8a aarch64-linux-android aarch64-linux-android "$ANDROID_ARMV8_CFLAGS" #build x86 #build_bin x86 x86 x86 i686-linux-android "$ANDROID_X86_CFLAGS" #build x86_64 # build_bin x86_64 x86_64 x86_64 x86_64-linux-android "$ANDROID_X86_64_CFLAGS"
- 編譯FFMPEG:
- 打開終端:進入到ffmpeg對應目錄輸入:chmod 777 -R ndk
- 再輸入:./build_android.sh 等待一段時間看到ffmpeg目錄下有dist/ffmpeg-3.4.7/arm64-v8a 就說明編譯成功了,如果沒有就仔細查看命令行中到錯誤信息
錯誤記錄:
- 提示:無法打開xxx ,因爲無法驗證開發者的問題 輸入:
sudo spctl --master-disable