Compile libRTMP with MinGW

The libRTMP library provides online multimedia streaming support for many open-source projects, such as ffmpeg and curl. I am building librtmp for use with ffmpeg and mplayer. I downloaded the latest release tarball from here.

1. First, I compiled zlib as shown in this post.

   
   

   make -f win32/Makefile.gcc
   cp -iv zlib1.dll /mingw/bin
   cp -iv zconf.h zlib.h /mingw/include
   cp -iv libz.a /mingw/lib
   cp -iv libz.dll.a /mingw/lib

   
   
   

2. Then, I built OpenSSL as shown in this post.

   
   

   ./Configure -DHAVE_STRUCT_TIMESPEC -L/mingw/lib -lz -lpthreadGC2 -lws2_32 --prefix=/mingw threads zlib mingw
   make
   make install

   
   
   

3. Then, I built librtmp.

   
   

   make SYS=mingw
   cp -iv *.exe /mingw/bin

   
   

   To build the shared library, I typed:

   
   

   cd librtmp
   gcc -shared -o librtmp.dll -Wl,--out-implib,librtmp.dll.a rtmp.o log.o amf.o hashswf.o parseurl.o -lssl -lcrypto -lz -lws2_32 -lwinmm -lgdi32

   
   

   To install librtmp, I typed the following:

   
   

   cp -iv librtmp.dll /mingw/bin
   cp -iv amf.h http.h log.h rtmp.h /mingw/include/librtmp
   cp -iv librtmp*.a /mingw/lib
   cp -iv librtmp.pc /mingw/lib/pkgconfig

   
   
   

4. Sometimes, librtmp.pc fails to be generated. In that case, make it yourself and copy it to /mingw/lib/pkgconfig.

   
   
   

   prefix=/mingw
   exec_prefix=${prefix}
   libdir=${exec_prefix}/lib
   incdir=${prefix}/include/librtmp
   
   Name: librtmp
   Description: RTMP implementation
   Version: 2.3
   Requires: openssl libcrypto
   URL: http://rtmpdump.mplayerhq.hu
   Libs: -L${libdir} -lrtmp -lz
   Libs.private: -lws2_32 -lwinmm -lgdi32 -lssl -lcrypto
   Cflags: -I${incdir}

   
   
   

To Build the Live555 library with MinGW

The Live555 streaming media library is an open-source implementation of RTP/RTCP/RTSP/SIP multimedia streaming protocols. I mainly use it with MPlayer. To compile it with MinGW, download the source for live555 library and extract the tarball under /mingw/lib:

cd /mingw/lib
tar xzvf live555-latest.tar.gz
cd live

compile it like this:

./genMakefiles mingw
make

Live555 and MPlayer

Normally, mplayer will detect the live555 library automatically. If not, append --enable-live to the ./configure command.

After running ./configure, open config.mak in a text editor and make the following changes.

• Append the following text to CXXFLAGS= line.
  

  -I/mingw/lib/live/liveMedia/include -I/mingw/lib/live/UsageEnvironment/include -I/mingw/lib/live/BasicUsageEnvironment/include -I/mingw/lib/live/groupsock/include

  
  
• Append the following text to EXTRALIBS= line.
  

  /mingw/lib/live/liveMedia/libliveMedia.a /mingw/lib/live/UsageEnvironment/libUsageEnvironment.a /mingw/lib/live/BasicUsageEnvironment/libBasicUsageEnvironment.a /mingw/lib/live/groupsock/libgroupsock.a -lstdc++

  
  

Creating a Shared Library for live555

To create a shared library from the static live555 libraries, I ran the following command:

gcc -shared -o livemedia.dll -Wl,--out-implib,liblivemedia.dll.a -Wl,--whole-archive liveMedia/libliveMedia.a UsageEnvironment/libUsageEnvironment.a BasicUsageEnvironment/libBasicUsageEnvironment.a groupsock/libgroupsock.a -Wl,--no-whole-archive -lstdc++ -lws2_32

I got livemedia.dll and liblivemedia.dll.a. I copied these files under MinGW.

cp -iv livemedia.dll /mingw/bin
cp -iv liblivemedia.dll.a /mingw/lib

To use these files, I would define environment variables as follows:

CXXFLAGS='-I/mingw/lib/live/liveMedia/include -I/mingw/lib/live/UsageEnvironment/include -I/mingw/lib/live/BasicUsageEnvironment/include -I/mingw/lib/live/groupsock/include'



LIBS='-lstdc++ /mingw/lib/liblivemedia.dll.a'