Mac(M1)上通过IJKPlayer编译集成libx264的FFMPEG

硬件环境
macOS : Sonoma 14.4 (23E214)
Xcode : Version 15.4 (15F31d)

1、编译libx264

1.1、使用编译脚本进行编译

1.1.1 下载代码 （2种方式）

A：使用git下载

git clone http://git.videolan.org/git/x264.git x264

B：x264官网下载
x264, the best H.264/AVC encoder - VideoLAN

image.png
1.1.2 下载 gas-preprocessor

GitHub - libav/gas-preprocessor: Perl script that implements a subset of the GNU as preprocessor that Apple’s as doesn’t
需要将x264编译成RAM平台的版本，需要此文件。下载 gas-pregprcessor，将其中的gas-preprocessor.pl文件放到/usr/local/bin文件夹下面。然后修改其权限使其可以运行chmod u+x gas-preprocessor.pl。

1.1.3 下载 x264 build shell

GitHub - tangyi1234/x264-iOS-build-script: x264编译脚本
下载build-x264.sh 将文件build-x264.sh放在x264同一级目录里面，注意不是放在x264文件夹里面。

#!/bin/sh

CONFIGURE_FLAGS="--enable-static --enable-pic --disable-cli"

# modified by yitang, 2017/09/05
#ARCHS="arm64 armv7s x86_64 i386 armv7"
ARCHS="arm64 x86_64 i386 armv7 armv7s"


# directories
SOURCE="x264"
FAT="x264-iOS"

SCRATCH="scratch-x264"
# must be an absolute path
THIN=`pwd`/"thin-x264"

# the one included in x264 does not work; specify full path to working one
GAS_PREPROCESSOR=/usr/local/bin/gas-preprocessor.pl

COMPILE="y"
LIPO="y"

if [ "$*" ]
then
    if [ "$*" = "lipo" ]
    then
        # skip compile
        COMPILE=
    else
        ARCHS="$*"
        if [ $# -eq 1 ]
        then
            # skip lipo
            LIPO=
        fi
    fi
fi

if [ "$COMPILE" ]
then

# begin: added by yitang, 2017/09/05
    if [ ! -r $GAS_PREPROCESSOR ]
    then
    echo 'gas-preprocessor.pl not found. Trying to install...'
    (curl -L https://github.com/libav/gas-preprocessor/blob/master/gas-preprocessor.pl \
    -o /usr/local/bin/gas-preprocessor.pl \
    && chmod +x /usr/local/bin/gas-preprocessor.pl) \
    || exit 1
    fi


    if [ ! -r $SOURCE ]
    then
    echo 'x264 source not found. Trying to download...'
    curl ftp://ftp.videolan.org/pub/x264/snapshots/last_x264.tar.bz2 | tar xj && ln -s x264-snapshot-20170904-2245 x264 || exit 1
    fi
# end: added by sunminmin, 2017/09/05

    CWD=`pwd`
    for ARCH in $ARCHS
    do
        echo "building $ARCH..."
        mkdir -p "$SCRATCH/$ARCH"
        cd "$SCRATCH/$ARCH"

        if [ "$ARCH" = "i386" -o "$ARCH" = "x86_64" ]
        then
            PLATFORM="iPhoneSimulator"
            CPU=
            if [ "$ARCH" = "x86_64" ]
            then
                SIMULATOR="-mios-simulator-version-min=7.0"
                HOST=
            else
                SIMULATOR="-mios-simulator-version-min=5.0"
            HOST="--host=i386-apple-darwin"
            fi
        else
            PLATFORM="iPhoneOS"
            if [ $ARCH = "armv7s" ]
            then
                CPU="--cpu=swift"
            else
                CPU=
            fi
            SIMULATOR=
            if [ $ARCH = "arm64" ]
            then
                HOST="--host=aarch64-apple-darwin"
            else
                HOST="--host=arm-apple-darwin"
            fi
        fi

        XCRUN_SDK=`echo $PLATFORM | tr '[:upper:]' '[:lower:]'`
        CC="xcrun -sdk $XCRUN_SDK clang -Wno-error=unused-command-line-argument-hard-error-in-future -arch $ARCH"
        CFLAGS="-arch $ARCH $SIMULATOR"
        CXXFLAGS="$CFLAGS"
        LDFLAGS="$CFLAGS"

        CC=$CC $CWD/$SOURCE/configure \
            $CONFIGURE_FLAGS \
            $HOST \
            $CPU \
            --extra-cflags="$CFLAGS" \
            --extra-ldflags="$LDFLAGS" \
            --prefix="$THIN/$ARCH"

        mkdir extras
        ln -s $GAS_PREPROCESSOR extras

        make -j3 install
        cd $CWD
    done
fi

if [ "$LIPO" ]
then
    echo "building fat binaries..."
    mkdir -p $FAT/lib
    set - $ARCHS
    CWD=`pwd`
    cd $THIN/$1/lib
    for LIB in *.a
    do
        cd $CWD
        lipo -create `find $THIN -name $LIB` -output $FAT/lib/$LIB
    done

    cd $CWD
    cp -rf $THIN/$1/include $FAT
fi

# begin: added by sunminmin, 2017/09/05
echo "copy config.h to ..."
for ARCH in $ARCHS
do
cd $CWD
echo "copy $SCRATCH/$ARCH/config.h to $THIN/$ARCH/$include"
cp -rf $SCRATCH/$ARCH/config.h $THIN/$ARCH/$include || exit 1
done

echo "building success!"
# end: added by sunminmin, 2017/09/05

echo Done
1.1.4 执行脚本完成x264的编译

lib中为静态库libx264.a、include中为两个头文件


include文件夹
lib文件夹

1.2、模仿openssl的操作，修改几个脚本 （以iOS为例、Android类似）

1.2.1 下载x264源码

A:在主目录下新建init-ios-x264.sh

IJK_x264_UPSTREAM=http://git.videolan.org/git/x264.git
IJK_x264_FORK=http://git.videolan.org/git/x264.git
 
IJK_x264_LOCAL_REPO=extra/x264
 
set -e
TOOLS=tools
 
echo "== pull x264 base =="
sh $TOOLS/pull-repo-base.sh $IJK_x264_UPSTREAM $IJK_x264_LOCAL_REPO
 
function pull_fork()
{
    echo "== pull x264 fork $1 =="
    sh $TOOLS/pull-repo-ref.sh $IJK_x264_FORK ios/x264-$1 ${IJK_x264_LOCAL_REPO}
}

 
pull_fork "arm64"

# 参数可选，想用哪个架构添加下面的哪行命令 （这句话很关键关系到下面的执行） 
pull_fork "armv5"
pull_fork "armv7a"
pull_fork "arm64"
pull_fork "x86"
pull_fork "x86_64"

B: 执行该脚本 ./init-ios-x264.sh 这步执行完后，会在extra下面有个x264， 下面有源码
并且在iOS文件夹内有x264-arm64文件夹，如下
可以在上面脚本第四行，修改为自定义的路径

1.2.2 执行编译

A：新建 compile-x264.sh 和 do-compile-x264.sh
a:模仿 compile-openssl.sh 在iOS文件夹内新建 compile-x264.sh


FF_ALL_ARCHS_IOS6_SDK="armv7 armv7s i386"
FF_ALL_ARCHS_IOS7_SDK="armv7 armv7s arm64 i386 x86_64"
FF_ALL_ARCHS_IOS8_SDK="armv7 arm64 i386 x86_64"

FF_ALL_ARCHS=$FF_ALL_ARCHS_IOS8_SDK

#----------
UNI_BUILD_ROOT=`pwd`
UNI_TMP="$UNI_BUILD_ROOT/tmp"
UNI_TMP_LLVM_VER_FILE="$UNI_TMP/llvm.ver.txt"
FF_TARGET=$1
set -e

#----------
FF_LIBS="libx264"

#----------
echo_archs() {
    echo "===================="
    echo "[*] check xcode version"
    echo "===================="
    echo "FF_ALL_ARCHS = $FF_ALL_ARCHS"
}

do_lipo () {
    LIB_FILE=$1
    LIPO_FLAGS=
    for ARCH in $FF_ALL_ARCHS
    do
        LIPO_FLAGS="$LIPO_FLAGS $UNI_BUILD_ROOT/build/x264-$ARCH/output/lib/$LIB_FILE"
    done

    xcrun lipo -create $LIPO_FLAGS -output $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE
    xcrun lipo -info $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE
}

do_lipo_all () {
    mkdir -p $UNI_BUILD_ROOT/build/universal/lib
    echo "lipo archs: $FF_ALL_ARCHS"
    for FF_LIB in $FF_LIBS
    do
        do_lipo "$FF_LIB.a";
    done

    cp -R $UNI_BUILD_ROOT/build/x264-armv7/output/include $UNI_BUILD_ROOT/build/universal/
}

#----------
if [ "$FF_TARGET" = "armv7" -o "$FF_TARGET" = "armv7s" -o "$FF_TARGET" = "arm64" ]; then
    echo_archs
    sh tools/do-compile-x264.sh $FF_TARGET
elif [ "$FF_TARGET" = "i386" -o "$FF_TARGET" = "x86_64" ]; then
    echo_archs
    sh tools/do-compile-x264.sh $FF_TARGET
elif [ "$FF_TARGET" = "lipo" ]; then
    echo_archs
    do_lipo_all
elif [ "$FF_TARGET" = "all" ]; then
    echo_archs
    for ARCH in $FF_ALL_ARCHS
    do
        sh tools/do-compile-x264.sh $ARCH
    done

    do_lipo_all
elif [ "$FF_TARGET" = "check" ]; then
    echo_archs
elif [ "$FF_TARGET" = "clean" ]; then
    echo_archs
    for ARCH in $FF_ALL_ARCHS
    do
        cd x264_out-$ARCH && git clean -xdf && cd -
    done
else
    echo "Usage:"
    echo "  compile-x264.sh armv7|arm64|i386|x86_64"
    echo "  compile-x264.sh armv7s (obselete)"
    echo "  compile-x264.sh lipo"
    echo "  compile-x264.sh all"
    echo "  compile-x264.sh clean"
    echo "  compile-x264.sh check"
    exit 1
fi

b:模仿 do-compile-openssl.sh iOS文件夹内的tools种新建 do-compile-x264.sh

echo "===================="
echo "[*] check host"
echo "===================="
set -e


FF_XCRUN_DEVELOPER=`xcode-select -print-path`
if [ ! -d "$FF_XCRUN_DEVELOPER" ]; then
  echo "xcode path is not set correctly $FF_XCRUN_DEVELOPER does not exist (most likely because of xcode > 4.3)"
  echo "run"
  echo "sudo xcode-select -switch <xcode path>"
  echo "for default installation:"
  echo "sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer"
  exit 1
fi

case $FF_XCRUN_DEVELOPER in  
     *\ * )
           echo "Your Xcode path contains whitespaces, which is not supported."
           exit 1
          ;;
esac


#--------------------
# include


#--------------------
# common defines
FF_ARCH=$1
if [ -z "$FF_ARCH" ]; then
    echo "You must specific an architecture 'armv7, armv7s, arm64, i386, x86_64, ...'.\n"
    exit 1
fi


FF_BUILD_ROOT=`pwd`
FF_TAGET_OS="darwin"


# openssl build params
export COMMON_FF_CFG_FLAGS=

OPENSSL_CFG_FLAGS=
OPENSSL_EXTRA_CFLAGS=
OPENSSL_CFG_CPU=

# i386, x86_64
OPENSSL_CFG_FLAGS_SIMULATOR=

# armv7, armv7s, arm64
OPENSSL_CFG_FLAGS_ARM=
OPENSSL_CFG_FLAGS_ARM="iphoneos-cross"

echo "build_root: $FF_BUILD_ROOT"

#--------------------
echo "===================="
echo "[*] config arch $FF_ARCH"
echo "===================="

FF_BUILD_NAME="unknown"
FF_XCRUN_PLATFORM="iPhoneOS"
FF_XCRUN_OSVERSION=
FF_GASPP_EXPORT=
FF_XCODE_BITCODE=

if [ "$FF_ARCH" = "i386" ]; then
    FF_BUILD_NAME="x264-i386"
    FF_XCRUN_PLATFORM="iPhoneSimulator"
    FF_XCRUN_OSVERSION="-mios-simulator-version-min=6.0"
    OPENSSL_CFG_FLAGS="darwin-i386-cc $OPENSSL_CFG_FLAGS"
elif [ "$FF_ARCH" = "x86_64" ]; then
    FF_BUILD_NAME="x264-x86_64"
    FF_XCRUN_PLATFORM="iPhoneSimulator"
    FF_XCRUN_OSVERSION="-mios-simulator-version-min=7.0"
    OPENSSL_CFG_FLAGS="darwin64-x86_64-cc $OPENSSL_CFG_FLAGS"
elif [ "$FF_ARCH" = "armv7" ]; then
    FF_BUILD_NAME="x264-armv7"
    FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0"
    FF_XCODE_BITCODE="-fembed-bitcode"
    OPENSSL_CFG_FLAGS="$OPENSSL_CFG_FLAGS_ARM $OPENSSL_CFG_FLAGS"
#    OPENSSL_CFG_CPU="--cpu=cortex-a8"
elif [ "$FF_ARCH" = "armv7s" ]; then
    FF_BUILD_NAME="x264-armv7s"
    OPENSSL_CFG_CPU="--cpu=swift"
    FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0"
    FF_XCODE_BITCODE="-fembed-bitcode"
    OPENSSL_CFG_FLAGS="$OPENSSL_CFG_FLAGS_ARM $OPENSSL_CFG_FLAGS"
elif [ "$FF_ARCH" = "arm64" ]; then
    FF_BUILD_NAME="x264-arm64"
    FF_XCRUN_OSVERSION="-miphoneos-version-min=7.0"
    FF_XCODE_BITCODE="-fembed-bitcode"
    OPENSSL_CFG_FLAGS="$OPENSSL_CFG_FLAGS_ARM $OPENSSL_CFG_FLAGS"
    FF_GASPP_EXPORT="GASPP_FIX_XCODE5=1"
else
    echo "unknown architecture $FF_ARCH";
    exit 1
fi

echo "build_name: $FF_BUILD_NAME"
echo "platform:   $FF_XCRUN_PLATFORM"
echo "osversion:  $FF_XCRUN_OSVERSION"

#--------------------
echo "===================="
echo "[*] make ios toolchain $FF_BUILD_NAME"
echo "===================="


FF_BUILD_SOURCE="$FF_BUILD_ROOT/$FF_BUILD_NAME"
FF_BUILD_PREFIX="$FF_BUILD_ROOT/build/$FF_BUILD_NAME/output"

mkdir -p $FF_BUILD_PREFIX


FF_XCRUN_SDK=`echo $FF_XCRUN_PLATFORM | tr '[:upper:]' '[:lower:]'`
FF_XCRUN_SDK_PLATFORM_PATH=`xcrun -sdk $FF_XCRUN_SDK --show-sdk-platform-path`
FF_XCRUN_SDK_PATH=`xcrun -sdk $FF_XCRUN_SDK --show-sdk-path`
FF_XCRUN_CC="xcrun -sdk $FF_XCRUN_SDK clang"

export CROSS_TOP="$FF_XCRUN_SDK_PLATFORM_PATH/Developer"
export CROSS_SDK=`echo ${FF_XCRUN_SDK_PATH/#$CROSS_TOP\/SDKs\//}`
export BUILD_TOOL="$FF_XCRUN_DEVELOPER"
export CC="$FF_XCRUN_CC -arch $FF_ARCH $FF_XCRUN_OSVERSION"

echo "build_source: $FF_BUILD_SOURCE"
echo "build_prefix: $FF_BUILD_PREFIX"
echo "CROSS_TOP: $CROSS_TOP"
echo "CROSS_SDK: $CROSS_SDK"
echo "BUILD_TOOL: $BUILD_TOOL"
echo "CC: $CC"

#--------------------
echo "\n--------------------"
echo "[*] configurate x264"
echo "--------------------"

OPENSSL_CFG_FLAGS="$OPENSSL_CFG_FLAGS $FF_XCODE_BITCODE"
OPENSSL_CFG_FLAGS="$OPENSSL_CFG_FLAGS --x264dir=$FF_BUILD_PREFIX"

# xcode configuration
export DEBUG_INFORMATION_FORMAT=dwarf-with-dsym

cd $FF_BUILD_SOURCE
if [ -f "./Makefile" ]; then
    echo 'reuse configure'
else
    echo "config: $OPENSSL_CFG_FLAGS"
    ./Configure \
        $OPENSSL_CFG_FLAGS
    make clean
fi

#--------------------
echo "\n--------------------"
echo "[*] compile x264"
echo "--------------------"
set +e
make
sudo make install

c：执行

./compile-x264.sh arm64

执行完成后会在iOS中的build文件夹x264-arm64内output中生成lib和include文件夹


image.png

2、编译带有libx264的ffmpeg静态库

2.1 compile-ffmpeg.sh不需要修改 修改编译do-compile-ffmpeg.sh的脚本

#! /usr/bin/env bash
#
# Copyright (C) 2013-2014 Bilibili
# Copyright (C) 2013-2014 Zhang Rui <bbcallen@gmail.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

# This script is based on projects below
# https://github.com/kolyvan/kxmovie
# https://github.com/yixia/FFmpeg-Android
# http://git.videolan.org/?p=vlc-ports/android.git;a=summary
# https://github.com/kewlbear/FFmpeg-iOS-build-script/

#--------------------
echo "===================="
echo "[*] check host"
echo "===================="
set -e

#--------------------
# include


#--------------------
# common defines
FF_ARCH=$1
FF_BUILD_OPT=$2
echo "FF_ARCH=$FF_ARCH"
echo "FF_BUILD_OPT=$FF_BUILD_OPT"
if [ -z "$FF_ARCH" ]; then
    echo "You must specific an architecture 'armv7, armv7s, arm64, i386, x86_64, ...'.\n"
    exit 1
fi


FF_BUILD_ROOT=`pwd`
FF_TAGET_OS="darwin"


# ffmpeg build params
export COMMON_FF_CFG_FLAGS=
source $FF_BUILD_ROOT/../config/module.sh

FFMPEG_CFG_FLAGS=
FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $COMMON_FF_CFG_FLAGS"

# Optimization options (experts only):
# FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-armv5te"
# FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-armv6"
# FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-armv6t2"

# Advanced options (experts only):
FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-cross-compile"
# --disable-symver may indicate a bug
# FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-symver"

# Developer options (useful when working on FFmpeg itself):
FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-stripping"

##
FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --arch=$FF_ARCH"
FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --target-os=$FF_TAGET_OS"
FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-static"
FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-shared"
FFMPEG_EXTRA_CFLAGS=

# i386, x86_64
FFMPEG_CFG_FLAGS_SIMULATOR=
FFMPEG_CFG_FLAGS_SIMULATOR="$FFMPEG_CFG_FLAGS_SIMULATOR --disable-asm"
FFMPEG_CFG_FLAGS_SIMULATOR="$FFMPEG_CFG_FLAGS_SIMULATOR --disable-mmx"
FFMPEG_CFG_FLAGS_SIMULATOR="$FFMPEG_CFG_FLAGS_SIMULATOR --assert-level=2"

# armv7, armv7s, arm64
FFMPEG_CFG_FLAGS_ARM=
FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-pic"
FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-neon"
case "$FF_BUILD_OPT" in
    debug)
        FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --disable-optimizations"
        FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-debug"
        FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --disable-small"
    ;;
    *)
        FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-optimizations"
        FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-debug"
        FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-small"
    ;;
esac

echo "build_root: $FF_BUILD_ROOT"

#--------------------
echo "===================="
echo "[*] check gas-preprocessor"
echo "===================="
FF_TOOLS_ROOT="$FF_BUILD_ROOT/../extra"
export PATH="$FF_TOOLS_ROOT/gas-preprocessor:$PATH"

echo "gasp: $FF_TOOLS_ROOT/gas-preprocessor/gas-preprocessor.pl"

#--------------------
echo "===================="
echo "[*] config arch $FF_ARCH"
echo "===================="

FF_BUILD_NAME="unknown"
FF_XCRUN_PLATFORM="iPhoneOS"
FF_XCRUN_OSVERSION=
FF_GASPP_EXPORT=
FF_DEP_OPENSSL_INC=
FF_DEP_OPENSSL_LIB=
FF_XCODE_BITCODE=

if [ "$FF_ARCH" = "i386" ]; then
    FF_BUILD_NAME="ffmpeg-i386"
    FF_BUILD_NAME_X264=x264-i386
    FF_XCRUN_PLATFORM="iPhoneSimulator"
    FF_XCRUN_OSVERSION="-mios-simulator-version-min=6.0"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_SIMULATOR"
elif [ "$FF_ARCH" = "x86_64" ]; then
    FF_BUILD_NAME="ffmpeg-x86_64"
    FF_BUILD_NAME_X264=x264-x86_64
    FF_XCRUN_PLATFORM="iPhoneSimulator"
    FF_XCRUN_OSVERSION="-mios-simulator-version-min=7.0"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_SIMULATOR"
elif [ "$FF_ARCH" = "armv7" ]; then
    FF_BUILD_NAME="ffmpeg-armv7"
    FF_BUILD_NAME_X264=x264-armv7
    FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0"
    FF_XCODE_BITCODE="-fembed-bitcode"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM"
#    FFMPEG_CFG_CPU="--cpu=cortex-a8"
elif [ "$FF_ARCH" = "armv7s" ]; then
    FF_BUILD_NAME="ffmpeg-armv7s"
    FF_BUILD_NAME_X264=x264-armv7s
    FFMPEG_CFG_CPU="--cpu=swift"
    FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0"
    FF_XCODE_BITCODE="-fembed-bitcode"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM"
elif [ "$FF_ARCH" = "arm64" ]; then
    FF_BUILD_NAME="ffmpeg-arm64"
    FF_BUILD_NAME_X264=x264-arm64
    FF_XCRUN_OSVERSION="-miphoneos-version-min=7.0"
    FF_XCODE_BITCODE="-fembed-bitcode"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM"
    FF_GASPP_EXPORT="GASPP_FIX_XCODE5=1"
else
    echo "unknown architecture $FF_ARCH";
    exit 1
fi

echo "build_name: $FF_BUILD_NAME"
echo "platform:   $FF_XCRUN_PLATFORM"
echo "osversion:  $FF_XCRUN_OSVERSION"

#--------------------
echo "===================="
echo "[*] make ios toolchain $FF_BUILD_NAME"
echo "===================="

FF_BUILD_SOURCE="$FF_BUILD_ROOT/$FF_BUILD_NAME"
FF_BUILD_PREFIX="$FF_BUILD_ROOT/build/$FF_BUILD_NAME/output"

FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --prefix=$FF_BUILD_PREFIX"

mkdir -p $FF_BUILD_PREFIX

echo "build_source: $FF_BUILD_SOURCE"
echo "build_prefix: $FF_BUILD_PREFIX"

#--------------------
echo "\n--------------------"
echo "[*] configurate ffmpeg"
echo "--------------------"
FF_XCRUN_SDK=`echo $FF_XCRUN_PLATFORM | tr '[:upper:]' '[:lower:]'`
FF_XCRUN_CC="xcrun -sdk $FF_XCRUN_SDK clang"

FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_CPU"

FFMPEG_CFLAGS=
FFMPEG_CFLAGS="$FFMPEG_CFLAGS -arch $FF_ARCH"
FFMPEG_CFLAGS="$FFMPEG_CFLAGS $FF_XCRUN_OSVERSION"
FFMPEG_CFLAGS="$FFMPEG_CFLAGS $FFMPEG_EXTRA_CFLAGS"
FFMPEG_CFLAGS="$FFMPEG_CFLAGS $FF_XCODE_BITCODE"
FFMPEG_LDFLAGS="$FFMPEG_CFLAGS"
FFMPEG_DEP_LIBS=

#--------------------
echo "\n--------------------"
echo "[*] check OpenSSL"
echo "----------------------"
FFMPEG_DEP_OPENSSL_INC=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/include
FFMPEG_DEP_OPENSSL_LIB=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/lib
#--------------------
# with openssl
#if [ -f "${FFMPEG_DEP_OPENSSL_LIB}/libssl.a" ]; then
#    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-openssl"
#
#    FFMPEG_CFLAGS="$FFMPEG_CFLAGS -I${FFMPEG_DEP_OPENSSL_INC}"
#    FFMPEG_DEP_LIBS="$FFMPEG_CFLAGS -L${FFMPEG_DEP_OPENSSL_LIB} -lssl -lcrypto"
#fi


FFMPEG_X264_INCLUDE=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_X264/output/include
FFMPEG_X264_LIB=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_X264/output/lib
FFMPEG_CFLAGS="$FFMPEG_CFLAGS -I$FFMPEG_X264_INCLUDE"
FFMPEG_DEP_LIBS="$FFMPEG_CFLAGS -L$FFMPEG_X264_LIB"

#FFMPEG_X264_INCLUDE=/usr/local/include
#FFMPEG_X264_LIB=/usr/local/lib
#FFMPEG_CFLAGS="$FFMPEG_CFLAGS -I${FFMPEG_X264_INCLUDE}"
#FFMPEG_DEP_LIBS="$FFMPEG_CFLAGS -L${FFMPEG_X264_LIB}"




echo " CCCCCCCCCCCCCCCCCCCCC $FFMPEG_DEP_LIBS"

#--------------------
echo "\n--------------------"
echo "[*] configure"
echo "----------------------"

if [ ! -d $FF_BUILD_SOURCE ]; then
    echo ""
    echo "!! ERROR"
    echo "!! Can not find FFmpeg directory for $FF_BUILD_NAME"
    echo "!! Run 'sh init-ios.sh' first"
    echo ""
    exit 1
fi

# xcode configuration
export DEBUG_INFORMATION_FORMAT=dwarf-with-dsym

cd $FF_BUILD_SOURCE
if [ -f "./config.h" ]; then
    echo 'reuse configure'
else
    echo "config: $FFMPEG_CFG_FLAGS $FF_XCRUN_CC"
    ./configure \
        $FFMPEG_CFG_FLAGS \
        --cc="$FF_XCRUN_CC" \
        $FFMPEG_CFG_CPU \
        --extra-cflags="$FFMPEG_CFLAGS" \
        --extra-cxxflags="$FFMPEG_CFLAGS" \
        --extra-ldflags="$FFMPEG_LDFLAGS $FFMPEG_DEP_LIBS"
    make clean
fi

#--------------------
echo "\n--------------------"
echo "[*] compile ffmpeg"
echo "--------------------"
cp config.* $FF_BUILD_PREFIX
make -j3 $FF_GASPP_EXPORT
make install
mkdir -p $FF_BUILD_PREFIX/include/libffmpeg
cp -f config.h $FF_BUILD_PREFIX/include/libffmpeg/config.h

主要修改代码为

#--------------------
echo "\n--------------------"
echo "[*] check OpenSSL"
echo "----------------------"
FFMPEG_DEP_OPENSSL_INC=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/include
FFMPEG_DEP_OPENSSL_LIB=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/lib
#--------------------
# with openssl
#if [ -f "${FFMPEG_DEP_OPENSSL_LIB}/libssl.a" ]; then
#    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-openssl"
#
#    FFMPEG_CFLAGS="$FFMPEG_CFLAGS -I${FFMPEG_DEP_OPENSSL_INC}"
#    FFMPEG_DEP_LIBS="$FFMPEG_CFLAGS -L${FFMPEG_DEP_OPENSSL_LIB} -lssl -lcrypto"
#fi

# (1)使用第一种方式编译的libx264，需要将头文件和静态库放到相应位置
#FFMPEG_X264_INCLUDE=/usr/local/include
#FFMPEG_X264_LIB=/usr/local/lib
#FFMPEG_CFLAGS="$FFMPEG_CFLAGS -I${FFMPEG_X264_INCLUDE}"
#FFMPEG_DEP_LIBS="$FFMPEG_CFLAGS -L${FFMPEG_X264_LIB}"

# (2) 使用第二种方式编译的libx264
FFMPEG_X264_INCLUDE=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_X264/output/include
FFMPEG_X264_LIB=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_X264/output/lib
FFMPEG_CFLAGS="$FFMPEG_CFLAGS -I$FFMPEG_X264_INCLUDE"
FFMPEG_DEP_LIBS="$FFMPEG_CFLAGS -L$FFMPEG_X264_LIB"

配置文件(ijkplayer-ios/config/module.sh)中添加libx264

export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-gpl"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-libx264"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-encoder=libx264"

2.2 执行ffmpeg的正常编译

# 回到iOS目录下执行
./compile-ffmpeg.sh arm64

2.3 可能出现的错误

ERROR: libx264 not found
原因基本上都是libx264库与ffmpeg不匹配，双方是否都是开启了bitcode。


if [ "$FF_ARCH" = "i386" ]; then
    FF_BUILD_NAME="ffmpeg-i386"
    FF_BUILD_NAME_X264=x264-i386
    FF_XCRUN_PLATFORM="iPhoneSimulator"
    FF_XCRUN_OSVERSION="-mios-simulator-version-min=6.0"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_SIMULATOR"
elif [ "$FF_ARCH" = "x86_64" ]; then
    FF_BUILD_NAME="ffmpeg-x86_64"
    FF_BUILD_NAME_X264=x264-x86_64
    FF_XCRUN_PLATFORM="iPhoneSimulator"
    FF_XCRUN_OSVERSION="-mios-simulator-version-min=7.0"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_SIMULATOR"
elif [ "$FF_ARCH" = "armv7" ]; then
    FF_BUILD_NAME="ffmpeg-armv7"
    FF_BUILD_NAME_X264=x264-armv7
    FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0"
    FF_XCODE_BITCODE="-fembed-bitcode"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM"
#    FFMPEG_CFG_CPU="--cpu=cortex-a8"
elif [ "$FF_ARCH" = "armv7s" ]; then
    FF_BUILD_NAME="ffmpeg-armv7s"
    FF_BUILD_NAME_X264=x264-armv7s
    FFMPEG_CFG_CPU="--cpu=swift"
    FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0"
    FF_XCODE_BITCODE="-fembed-bitcode"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM"
elif [ "$FF_ARCH" = "arm64" ]; then
    FF_BUILD_NAME="ffmpeg-arm64"
    FF_BUILD_NAME_X264=x264-arm64
    FF_XCRUN_OSVERSION="-miphoneos-version-min=7.0"
    FF_XCODE_BITCODE="-fembed-bitcode"
    FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM"
    FF_GASPP_EXPORT="GASPP_FIX_XCODE5=1"
else
    echo "unknown architecture $FF_ARCH";
    exit 1
fi

将相应的第18行、26行、32行的代码注释掉即可
只要ffmpeg中的和libx264中的设置都相同的，就没问题了

编译完成后将build内的静态库和头文件取出来就可以了


lib.png
include.png

参考文章：

1、 IOS-FFmpeg的编译
2、ijkplayer支持x264编译
3、x264编译
4、iOS FFmpeg+libx264包的产生

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