mac 下ffmpeg enable-libsrt编译方法及问题解决

1. 编译srt

1.1 下载及编译srt代码

git clone https://github.com/Haivision/srt.git
cd srt
./configure
make && make install  //或者使用clion的cmake

2. 安装ffmepg之间的准备

2.1 检查是否安装openssl

cmd$ pkg-config --list-all|grep openssl 

openssl               OpenSSL - Secure Sockets Layer and cryptography libraries and tools

如果已经成功安装，则略过，否则执行

brew install openssl
brew link openssl --force   //必须要执行

可能需要执行：

	export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig:/usr/local/opt/openssl/lib/pkgconfig"

2.2 检查srt是否安装成功

cmd$:  pkg-config --list-all|grep srt
srt                   srt - SRT library set

3. 安装FFmpeg

3.1 下载ffmpeg代码

3.2 执行./configure：

./configure --enable-libsrt ... 

我的例子：
./configure --enable-libsrt --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg  --enable-libspeex --enable-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr --disable-x86asm

如果报错“ERROR: srt >= 1.3.0 not found using pkg-config”

则直接查看  ffbuild/config.log，可能并不是srt的原因，而是其他srt依赖库的问题

3.3 make

3.4 make install