ffmpeg的centos、msys2、msvc编译

msys2 和 centos

https://ffmpeg.org/download.html
https://ffmpeg.zeranoe.com/builds/

Windows MSYS2准备
1）安装MSYS2
  http://www.msys2.org/
  http://repo.msys2.org/distrib/x86_64/msys2-x86_64-20161025.exe
  // http://repo.msys2.org/distrib/i686/msys2-i686-20161025.exe
2）进入msys2的mingw64
  C:> C:msys64msys2_shell.cmd -mingw64 -full-path -here  // 编译64位（x86_64-w64-mingw32）
  C:> C:msys64msys2_shell.cmd -mingw32 -full-path -here  // 编译32位（i686-w64-mingw32），在configure后需要加入--host=i686-w64-mingw32
3）安装开发工具
编译x264, x265 和 ffplay，需要安装mingw工具链、nasm等:

### msys2 ###
$ pacman -S base-devel git mercurial cvs wget curl p7zip nasm yasm perl ruby python2
$ pacman -S mingw-w64-x86_64-toolchain   // mingw-w64-i686-toolchain
$ pacman -S mingw-w64-x86_64-cmake       // mingw-w64-i686-cmake
$ pacman -S mingw-w64-x86_64-qt-creator  // mingw-w64-i686-qt-creator，或者安装cmake推荐的mingw-w64-x86_64-qt5可选包
注：qt5的大小超过了1GB，在编译x265时候作为cmake的配置，虽然是cmake的可选项，但是建议安装。

### centos ###
$ sudo yum group install "Development Tools"
$ sudo yum install wget curl git
$ sudo yum install glibc-static libstdc++-static
$ vim /etc/yum.repos.d/nasm.repo  // repo没有2.13版本的nasm，因此手动安装；debian 需要手动下载deb：https://packages.debian.org/sid/nasm
[nasm]
name=The Netwide Assembler
baseurl=http://www.nasm.us/pub/nasm/stable/linux/
enabled=1
gpgcheck=0

[nasm-testing]
name=The Netwide Assembler (release candidate builds)
baseurl=http://www.nasm.us/pub/nasm/testing/linux/
enabled=0
gpgcheck=0

[nasm-snapshot]
name=The Netwide Assembler (daily snapshot builds)
baseurl=http://www.nasm.us/pub/nasm/snapshots/latest/linux/
enabled=0
gpgcheck=0
$ sudo yum install nasm
$ sudo yum install cmake

下载和编译x264：
$ git clone http://git.videolan.org/git/x264.git
$ cd x264
$ git checkout -b stable remotes/origin/stable

### msys2 ###
$ make clean
// git reset --hard
// git clean -xf
// rm -rf /usr/local/x264
$ ./configure --prefix=/usr/local/x264 --enable-static --enable-strip --enable-pic  // --host=i686-w64-mingw32
$ make -j8
$ make install
// $ ldd /usr/local/x264/bin/x264.exe | grep -v /c/WINDOWS | sort    // 将依赖复制到bin下，就可以在CMD里直接运行x264.exe程序了
//        liblsmash-2.dll => /mingw64/bin/liblsmash-2.dll (0x64e40000)    // i686不需要复制
// $ cp /mingw64/bin/liblsmash-2.dll /usr/local/x264/bin
$ cd ..

### centos ###
$ ./configure --prefix=/usr/local/x264 --enable-static --enable-strip --enable-pic
$ sudo make -j8
$ sudo make install
$ cd ..


下载SDL2（生成ffplay必要）：
$ curl -L http://www.libsdl.org/release/SDL2-2.0.8.tar.gz > SDL2-2.0.8.tar.gz
$ tar xzvf SDL2-2.0.8.tar.gz

编译SDL2（生成ffplay必要）：
### msys2 ###
$ cd SDL2-2.0.8
// $ make distclean
// rm -rf /usr/local/sdl2
$ ./configure --prefix=/usr/local/sdl2 --enable-static  // --host=i686-w64-mingw32
$ make -j8
$ make install
// $ ldd /usr/local/sdl2/bin/SDL2.dll | grep -v /c/WINDOWS | sort
//        ??? => ??? (0x180000)    // 不需要复制
$ cd ..

### centos ###
$ cd SDL2-2.0.8
// $ sudo make distclean
// sudo rm -rf /usr/local/sdl2
$ ./configure --prefix=/usr/local/sdl2 --enable-static
$ sudo make -j8
$ sudo make install
$ cd ..


下载x265源码：
$ curl -L http://ftp.videolan.org/pub/videolan/x265/x265_2.7.tar.gz > x265_2.7.tar.gz
$ tar xzvf x265_2.7.tar.gz
或者
$ hg clone https://bitbucket.org/multicoreware/x265

编译x265：
### msys2 ###
$ cd x265_2.7/build/msys
编辑toolchain-x86_64-w64-mingw32.cmake文件，全部替换x86_64-w64-mingw32-为空：
$ vim toolchain-x86_64-w64-mingw32.cmake
:%s/x86_64-w64-mingw32-//g
$ ./make-x86_64-w64-mingw32-Makefiles.sh    // 注意：32位也调用此处
出现CMake配置窗口，编辑CMAKE_INSTALL_PREFIX为c:/msys64/usr/local/x265（请一定指定盘符），
勾选ENABLE_PIC，去掉勾选ENABLE_SHARED
然后一次点击Configure和Generate按钮，关闭CMake窗口
$ make -j8
$ make install
// $ ldd /usr/local/x265/bin/x265.exe | grep -v /c/WINDOWS | sort
//        libgcc_s_seh-1.dll => /mingw64/bin/libgcc_s_seh-1.dll (0x61440000)
//        libstdc++-6.dll => /mingw64/bin/libstdc++-6.dll (0x6fc40000)
//        libwinpthread-1.dll => /mingw64/bin/libwinpthread-1.dll (0x64940000)
// 然后在CMD里单独执行，如果没任何提示就失败了，用Dependency Walker检查，发现需要LIBSTDC++-6.DLL等库：
// $ cp /mingw64/bin/libstdc++-6.dll 
//      /mingw64/bin/libgcc_s_seh-1.dll 
//      /mingw64/bin/libwinpthread-1.dll 
//      /usr/local/x265/bin
// i868的情况：
// $ cp /mingw32/bin/libstdc++-6.dll 
//      /mingw32/bin/libwinpthread-1.dll 
//      /mingw32/bin/libgcc_s_dw2-1.dll 
//      /usr/local/x265/bin
$ cd ../../..

### centos ###
$ cd x265_2.7/build/linux
$ ./make-Makefiles.bash
编辑CMAKE_INSTALL_PREFIX为/usr/local/x265，勾选ENABLE_PIC（默认勾选），去掉勾选ENABLE_SHARED，输入c,g退出
$ sudo make -j8
$ sudo make install
$ cd ../../..


下载fdk-aac
https://sourceforge.net/projects/opencore-amr/
https://github.com/mstorsjo/fdk-aac
$ tar xzvf fdk-aac-0.1.6.tar.gz

编译fdk-aac
$ cd fdk-aac-0.1.6
$ rm -rf /usr/local/fdk-aac
### msys2 ###
$ ./configure --prefix=/usr/local/fdk-aac --enable-static // --host=i686-w64-mingw32
$ make -j8
$ make install
// $ ldd /usr/local/fdk-aac/bin/libfdk-aac-1.dll | grep -v /c/WINDOWS | sort  // 无依赖
$ cd ..

### centos ###
$ sudo ./configure --prefix=/usr/local/fdk-aac --enable-static
$ sudo make -j8
$ sudo install
$ cd ..


centos更新openssl
下载openssl
$ yum info openssl  // 查看下版本信息是否未1.1.x，若是，跳过更新openssl这步
$ wget https://www.openssl.org/source/openssl-1.1.0g.tar.gz
$ tar xvzf openssl-1.1.0g.tar.gz
$ cd openssl-1.1.0g
$ ./config --prefix=/usr/local/openssl
$ sudo make -j8
$ sudo make install


编译ffmpeg
注：ffmpeg v3.4 的 ffplay.c 有个不支持SDL2的BUG，可以将 v3.4.1 的 fftools/ffplay.c 替换过来。

### msys2 ###
检查PKG配置
PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/usr/local/x265/lib/pkgconfig:/usr/local/x264/lib/pkgconfig:/usr/local/sdl2/lib/pkgconfig:/usr/local/fdk-aac/lib/pkgconfig" pkg-config --exists --print-errors x264 x265 sdl2 fdk-aac
直接返回表示成功。如果失败，会返回错误提示。

// 静态库配置
$ cd ffmpeg3.4
// $ rm -rf /usr/local/ffmpegstatic
// make distclean
// make clean
// git reset --hard
// git clean -xf
注：这里没有使用msvc工具链，而是msys的。
$ PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/usr/local/x265/lib/pkgconfig:/usr/local/x264/lib/pkgconfig:/usr/local/sdl2/lib/pkgconfig:/usr/local/fdk-aac/lib/pkgconfig" ./configure 
  --prefix=/usr/local/ffmpegstatic --enable-static --disable-shared 
  --pkg-config-flags="--static" --extra-ldflags="-static -static-libgcc -static-libstdc++" 
  --enable-gpl --enable-small --disable-doc --enable-nonfree 
  --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-openssl 
  --enable-pic --disable-debug
$ make -j8
$ make install
下面是加入--extra-ldflags="-static -static-libgcc -static-libstdc++"的情况：
$ ldd /usr/local/ffmpegstatic/bin/ffmpeg.exe | grep -v /c/WINDOWS | sort
然后在CMD里单独执行，如果没任何提示就失败了，用Dependency Walker检查，发现需要的库：
$ cp /mingw64/bin/libwinpthread-1.dll 
     /mingw64/bin/libgcc_s_seh-1.dll 
     /usr/local/ffmpegstatic/bin
i868的情况：
//$ cp /mingw32/bin/libwinpthread-1.dll 
       /mingw32/bin/libgcc_s_dw2-1.dll 
       /usr/local/ffmpegstatic/bin

下面是未加--extra-ldflags="-static -static-libgcc -static-libstdc++"的情况：
$ ldd /usr/local/ffmpegstatic/bin/ffmpeg.exe | grep -v /c/WINDOWS | sort
        libbz2-1.dll => /usr/local/ffmpegstatic/bin/libbz2-1.dll (0x626c0000)
        LIBEAY32.dll => /usr/local/ffmpegstatic/bin/LIBEAY32.dll (0x63080000)
        libiconv-2.dll => /usr/local/ffmpegstatic/bin/libiconv-2.dll (0x66000000)
        liblzma-5.dll => /usr/local/ffmpegstatic/bin/liblzma-5.dll (0x63cc0000)
        libwinpthread-1.dll => /usr/local/ffmpegstatic/bin/libwinpthread-1.dll (0x64940000)
        SDL2.dll => /usr/local/ffmpegstatic/bin/SDL2.dll (0x6c740000)
        zlib1.dll => /usr/local/ffmpegstatic/bin/zlib1.dll (0x62e80000)
然后在CMD里单独执行，如果没任何提示就失败了，用Dependency Walker检查，发现需要LIBSTDC++-6.DLL等库：
$ cp /mingw64/bin/libwinpthread-1.dll 
     /mingw64/bin/libbz2-1.dll 
     /mingw64/bin/libiconv-2.dll 
     /mingw64/bin/LIBEAY32.dll 
     /mingw64/bin/liblzma-5.dll 
     /mingw64/bin/zlib1.dll 
     /usr/local/fdk-aac/bin/libfdk-aac-1.dll 
     /usr/local/sdl2/bin/sdl2.dll 
     /mingw64/bin/libstdc++-6.dll 
     /mingw64/bin/libgcc_s_seh-1.dll 
     /usr/local/ffmpegstatic/bin
i868的情况：
//$ cp /mingw32/bin/libbz2-1.dll 
       /mingw32/bin/libiconv-2.dll 
       /mingw32/bin/liblzma-5.dll 
       /mingw32/bin/zlib1.dll 
       /usr/local/fdk-aac/bin/libfdk-aac-1.dll 
       /usr/local/sdl2/bin/sdl2.dll 
       /mingw32/bin/libstdc++-6.dll 
       /mingw32/bin/libgcc_s_dw2-1.dll 
       /mingw32/bin/libwinpthread-1.dll 
       /mingw32/bin/libeay32.dll 
       /usr/local/ffmpegstatic/bin

### centos ###
检查PKG配置
PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/usr/local/x265/lib/pkgconfig:/usr/local/x264/lib/pkgconfig:/usr/local/sdl2/lib/pkgconfig:/usr/local/fdk-aac/lib/pkgconfig:/usr/local/openssl/lib/pkgconfig" pkg-config --exists --print-errors x264 x265 sdl2 fdk-aac openssl
直接返回表示成功。如果失败，会返回错误提示。

$ cd ffmpeg3.4
// 静态库配置
// $ sudo rm -rf /usr/local/ffmpegstatic
// $ sudo make distclean
// $ sudo make clean
$ PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/usr/local/x265/lib/pkgconfig:/usr/local/x264/lib/pkgconfig:/usr/local/sdl2/lib/pkgconfig:/usr/local/fdk-aac/lib/pkgconfig:/usr/local/openssl/lib/pkgconfig" ./configure 
  --prefix=/usr/local/ffmpegstatic --enable-static --disable-shared 
  --pkg-config-flags="--static" --extra-ldflags="-static -static-libgcc -static-libstdc++" 
  --enable-gpl --enable-small --disable-doc --enable-nonfree 
  --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-openssl 
  --enable-pic --disable-debug
$ sudo make -j8
$ sudo make install
// 测试
$ /usr/local/ffmpegstatic/bin/ffmpeg -version 
ffmpeg version e40fcb1 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-16)
configuration: ...
libavutil      55. 78.100 / 55. 78.100
libavcodec     57.107.100 / 57.107.100
libavformat    57. 83.100 / 57. 83.100
libavdevice    57. 10.100 / 57. 10.100
libavfilter     6.107.100 /  6.107.100
libswscale      4.  8.100 /  4.  8.100
libswresample   2.  9.100 /  2.  9.100
libpostproc    54.  7.100 / 54.  7.100

-----------------------------------------------------------
MSVC方式：（未包含外部库x264、sdl2、x265、fdk-aac等）
动态
$ ./configure --toolchain=msvc --arch=x86 --enable-shared --disable-static
静态
$ ./configure --toolchain=msvc --arch=x86 --enable-yasm --enable-asm --enable-static
等待配置完成，日志查看ffbuild/config.log
MAKE前，如果是中文版VS提示符，请打开config.h文件，将文件字符编码更改为UTF-8，检查其中的开关，比如CONFIG_FFPLAY是否被设置等。
$ make
如果make有警告C4828，检查提示文件（如config.h）的代码页，更改为UTF-8，
其他警告可忽略
$ make install
编译生产的执行文件ffmpeg.exe和DLL文件在目录C:msys64usrlocalin中，开发头文件在C:msys64usrlocalinclude中

msvc（不支持openssl）

用msvc工具链编译ffmpeg

准备工作参考ffmepg.txt，下面是具体步骤：

1. 先将需要编译的文件放到一个英文目录下，比如E:ffmpeg
2. 打开用 VS 的 VC 命令提示符
   x86：  x86 Native Tools Command Prompt for VS 2017    适用于 VS 2017 的 x86 本机工具命令提示
   x64：  x64 Native Tools Command Prompt for VS 2017    适用于 VS 2017 的 x64 本机工具命令提示
3. 进入目录，然后启动mingw64
   C:> cd /d E:ffmpeg
   E:> c:msys64msys2_shell.cmd -mingw32 -here -full-path    // x86 本机工具命令提示
   E:> c:msys64msys2_shell.cmd -mingw64 -here -full-path    // x64 本机工具命令提示
   4. 分别编译x264、SDL2、x265、fdk-aac、openssl和ffmpeg
4.1 编译x264
    $ cd x264
    $ CC=cl ./configure --prefix=/usr/local/msvc/x264 --enable-static --enable-shared --enable-strip --enable-pic
    $ make
    $ make install
4.2 编译SDL2
    用VS打开E:ffmpegSDL2-2.0.8VisualCSDL.sln，如果没有安装Visual Studio 2010 (Platform Toolset = 'v100')，选择不要升级。
    VS打开解决方案后，只要分别对SDL (Visual Studio 2010)项目和SDL2main (Visual Studio 2010)项目编译即可。
    对于需要升级的情况，先选择编译方案Release|Win32或者Release|x64，然后分别右键SDL和SDL2main项目，属性，
    修改“平台工具集”为靠近VS2010的版本，直接选择VS2017也是可以编译的；下面的配置类型（dll或者lib）是不需要修改的。
    
    $ mkdir -p /usr/local/msvc/sdl2/lib
    $ cp /e/ffmpeg/SDL2-2.0.8/VisualC/Win32/Release/* /usr/local/msvc/sdl2/lib    //拷贝32位版本
    $ cp /e/ffmpeg/SDL2-2.0.8/VisualC/x64/Release/* /usr/local/msvc/sdl2/lib    //拷贝64位版本
    
    $ mkdir /usr/local/msvc/sdl2/include
    $ cp -r /e/ffmpeg/SDL2-2.0.8/include /usr/local/msvc/sdl2/
    
    $ mkdir /usr/local/msvc/sdl2/lib/pkgconfig
    $ cp /e/ffmpeg/SDL2-2.0.8/sdl2.pc.in /usr/local/msvc/sdl2/lib/pkgconfig/sdl2.pc
    $ vim /usr/local/msvc/sdl2/lib/pkgconfig/sdl2.pc
    2dd 删除前面的行注释和空行
    :%s/@prefix@//usr/local/msvc/sdl2/g
    :%s/@exec_prefix@/${prefix}/bin/g
    :%s/@libdir@/${prefix}/lib/g
    :%s/@includedir@/${prefix}/include/g
    :%s/@SDL_VERSION@/2.0.8/g
    :%s/@SDL_RLD_FLAGS@//g
    :%s/@SDL_LIBS@/-lSDL2/g
    :%s/@SDL_STATIC_LIBS@//g
    :%s/@SDL_CFLAGS@//g
    :%s/${includedir}/SDL2/${includedir}/g
    $ cat /usr/local/msvc/sdl2/lib/pkgconfig/sdl2.pc
/---------------------------------------------
prefix=/usr/local/msvc/sdl2
exec_prefix=${prefix}/bin
libdir=${prefix}/lib
includedir=${prefix}/include

Name: sdl2
Description: Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.
Version: 2.0.8
Requires:
Conflicts:
Libs: -L${libdir}  -lSDL2
Libs.private:
Cflags: -I${includedir}

---------------------------------------------/
4.3 编译x265
    *** 编译32位版本 ***
    打开 x86 Native Tools Command Prompt for VS 2017    适用于 VS 2017 的 x86 本机工具命令提示
    C:> cd /d E:ffmpegx265_2.7uildvc15-x86    // vc15 指 VS2017
    E:> set PATH=%PATH%;C:msys64mingw32in
    E:> make-solutions.bat    // 由于 build-all.bat 中的 MSBuild 命令未指定 /p:Platform="Win32"，因此将手动MSbuild编译
    出现CMake配置窗口，编辑CMAKE_INSTALL_PREFIX为c:/msys64/usr/local/msvc/x265（请一定指定盘符），
    勾选ENABLE_PIC
    然后一次点击Configure和Generate按钮，关闭CMake窗口
    E:> MSBuild /p:Configuration="Release" /p:Platform="Win32" x265.sln
    E:> MSBuild /p:Configuration="Release" /p:Platform="Win32" INSTALL.vcxproj
    *** 编译64位版本 ***
    打开 x64 Native Tools Command Prompt for VS 2017
    C:> cd /d E:ffmpegx265_2.7uildvc15-x86_64
    E:> set PATH=%PATH%;C:msys64mingw64in
    E:> build-all.bat
    出现CMake配置窗口，编辑CMAKE_INSTALL_PREFIX为c:/msys64/usr/local/msvc/x265（请一定指定盘符），
    勾选ENABLE_PIC
    然后一次点击Configure和Generate按钮，关闭CMake窗口
    等待完成。
    E:> MSBuild /p:Configuration="Release" /p:Platform="x64" INSTALL.vcxproj
4.4 编译fdk-aac
    *** 编译32位版本 ***
    打开 x86 Native Tools Command Prompt for VS 2017
    C:> cd /d E:ffmpegfdk-aac-0.1.6
    E:> nmake -f Makefile.vc
    E:> nmake -f Makefile.vc prefix=C:msys64usrlocalmsvcfdk-aac install
    *** 编译64位版本 ***
    打开 x64 Native Tools Command Prompt for VS 2017
    C:> cd /d E:ffmpegfdk-aac-0.1.6
    E:> nmake -f Makefile.vc
    E:> nmake -f Makefile.vc prefix=C:msys64usrlocalmsvcfdk-aac install
    制作fdk-aac.pc
    E:> mkdir C:msys64usrlocalmsvcfdk-aaclibpkgconfig
    E:> notepad C:msys64usrlocalmsvcfdk-aaclibpkgconfigfdk-aac.pc
（UTF-8）
/-------------------------------------
prefix=/usr/local/msvc/fdk-aac
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: Fraunhofer FDK AAC Codec Library
Description: AAC codec library
Version: 0.1.6
Libs: -L${libdir} -lfdk-aac 
Libs.private: 
Cflags: -I${includedir}

-------------------------------------/
4.5 编译openssl （可忽略，暂未找到msvc方式编译ffmpeg带--enable-openssl成功的方法）
    先安装perl：
    http://www.activestate.com/ActivePerl
    http://downloads.activestate.com/ActivePerl/releases/5.24.3.2404/ActivePerl-5.24.3.2404-MSWin32-x64-404865.exe
    注：如果您的操作系统不是64位的，只能安装较旧的perl：http://downloads.activestate.com/ActivePerl/releases/5.22.4.2205/ActivePerl-5.22.4.2205-MSWin32-x86-64int-403863.exe
    安装后会自动加入环境变量PATH，默认位置C:Perl64in
    *** 编译32位版本 ***
    打开 x86 Native Tools Command Prompt for VS 2017
    C:> set PATH=%PATH%;C:msys64mingw32in
    C:> cd /d E:ffmpegopenssl-1.1.0g
    E:> perl Configure --prefix=C:msys64usrlocalmsvcopenssl VC-WIN32   // 可选 VC-WIN32 | VC-WIN64A | VC-WIN64I | VC-CE
    不必在意安装dmake提示（ppm install dmake），因为VS2017包含了nmake，它没检测出来而已。
    E:> nmake
    E:> nmake install
    *** 编译64位版本 ***
    打开 x64 Native Tools Command Prompt for VS 2017
    C:> set PATH=%PATH%;C:msys64mingw64in
    C:> cd /d E:ffmpegopenssl-1.1.0g
    E:> perl Configure --prefix=C:msys64usrlocalmsvcopenssl VC-WIN64A
    E:> nmake
    E:> nmake install
    
    创建pc文件（UTF-8）：openssl.pc、libssl.pc、libcrypto.pc
    E:> mkdir C:msys64usrlocalmsvcopenssllibpkgconfig
    E:> notepad C:msys64usrlocalmsvcopenssllibpkgconfigopenssl.pc
/-------------------------------------
prefix=/usr/local/msvc/openssl
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: OpenSSL
Description: Secure Sockets Layer and cryptography libraries and tools
Version: 1.1.0g
Requires: libssl libcrypto

-------------------------------------/
    E:> notepad C:msys64usrlocalmsvcopenssllibpkgconfiglibssl.pc
/-------------------------------------
prefix=/usr/local/msvc/openssl
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: OpenSSL-libssl
Description: Secure Sockets Layer and cryptography libraries
Version: 1.1.0g
Requires.private: libcrypto
Libs: -L${libdir} -lssl
Libs.private: -lws2_32 -lgdi32 -lcrypt32
Cflags: -I${includedir}

-------------------------------------/
    E:> notepad C:msys64usrlocalmsvcopenssllibpkgconfiglibcrypto.pc
/-------------------------------------
prefix=/usr/local/msvc/openssl
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
enginesdir=${libdir}/engines-1.1

Name: OpenSSL-libcrypto
Description: OpenSSL cryptography library
Version: 1.1.0g
Libs: -L${libdir} -lcrypto
Libs.private: -lws2_32 -lgdi32 -lcrypt32
Cflags: -I${includedir}

-------------------------------------/


4.6 编译ffmpeg
    *** 编译32位版本 ***
    打开 x86 Native Tools Command Prompt for VS 2017
    C:> cd /d E:ffmpegffmpeg3.4
    E:> c:msys64msys2_shell.cmd -mingw32 -here -full-path
    *** 编译64位版本 ***
    打开 x64 Native Tools Command Prompt for VS 2017
    C:> cd /d E:ffmpegffmpeg3.4
    E:> c:msys64msys2_shell.cmd -mingw64 -here -full-path
    
    然后执行：    
        
    $ vim /usr/local/msvc/x264/lib/pkgconfig/x264.pc
    将 Libs: -L${exec_prefix}/lib -lx264 更改
    为 Libs: -L${exec_prefix}/lib -llibx264
    
    $ vim /usr/local/msvc/x265/lib/pkgconfig/x265.pc
    将 Libs: -L${libdir} -lx265 更改
    为 Libs: -L${libdir} -llibx265
    
    $ PKG_CONFIG_PATH="/usr/local/msvc/x265/lib/pkgconfig:/usr/local/msvc/x264/lib/pkgconfig:/usr/local/msvc/sdl2/lib/pkgconfig:/usr/local/msvc/fdk-aac/lib/pkgconfig:/usr/local/msvc/openssl/lib/pkgconfig" pkg-config --exists --print-errors x264 x265 sdl2 fdk-aac openssl
    
    *** 编译32位版本 ***
    $ PKG_CONFIG_PATH="/usr/local/msvc/x265/lib/pkgconfig:/usr/local/msvc/x264/lib/pkgconfig:/usr/local/msvc/sdl2/lib/pkgconfig:/usr/local/msvc/fdk-aac/lib/pkgconfig:/usr/local/msvc/openssl/lib/pkgconfig" ./configure 
    --toolchain=msvc --arch=x86 
    --prefix=/usr/local/msvc/ffmpegstatic --enable-static --disable-shared 
    --pkg-config-flags="--static --msvc-syntax" 
    --enable-gpl --enable-small --disable-doc --enable-nonfree 
    --enable-libfdk-aac --enable-libx264 --enable-libx265 
    --enable-pic --disable-debug
    注：--enable-openssl会失败，因此未加入。
    
    *** 编译64位版本 ***
    $ PKG_CONFIG_PATH="/usr/local/msvc/x265/lib/pkgconfig:/usr/local/msvc/x264/lib/pkgconfig:/usr/local/msvc/sdl2/lib/pkgconfig:/usr/local/msvc/fdk-aac/lib/pkgconfig:/usr/local/msvc/openssl/lib/pkgconfig" ./configure 
    --toolchain=msvc --arch=amd64 
    --prefix=/usr/local/msvc/ffmpegstatic --enable-static --disable-shared 
    --pkg-config-flags="--static --msvc-syntax" 
    --enable-gpl --enable-small --disable-doc --enable-nonfree 
    --enable-libfdk-aac --enable-libx264 --enable-libx265 
    --enable-pic --disable-debug
    注：--enable-openssl会失败，因此未加入。
    
        
    $ make -j8
    $ make install
    $ cp /usr/local/msvc/sdl2/lib/SDL2.dll /usr/local/msvc/ffmpegstatic/bin/
    $ cp /usr/local/msvc/x265/lib/libx265.dll /usr/local/msvc/ffmpegstatic/bin/    编译32位版本
    $ cp /usr/local/msvc/x265/bin/libx265.dll /usr/local/msvc/ffmpegstatic/bin/    编译64位版本