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}