[FFmpeg-user] How to build ffmpeg statically with librtmp support

[Han Jiang]

Hi all , i was using this build script to build ffmpeg statically on centos
7.
i forked this repo from stvs's build script. the only difference is i added
--enable-librtmp,

https://github.com/oglops/ffmpeg-static

but i have got this error :  "ERROR: librtmp not found".
according to this SO link
http://stackoverflow.com/questions/9634496/building-ffmpeg-with-librtmp-for-android
i commented out the following line
enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h
RTMP_Socket

but i get a new error when running ./configure.


libavformat/libavformat.a(librtmp.o): In function `rtmp_read_seek':
librtmp.c:(.text+0x30): undefined reference to `RTMP_SendSeek'
libavformat/libavformat.a(librtmp.o): In function `rtmp_read_pause':
librtmp.c:(.text+0x8d): undefined reference to `RTMP_Pause'
libavformat/libavformat.a(librtmp.o): In function `rtmp_close':
librtmp.c:(.text+0xaa): undefined reference to `RTMP_Close'
libavformat/libavformat.a(librtmp.o): In function `rtmp_open':
librtmp.c:(.text+0x124): undefined reference to `RTMP_LogSetLevel'
librtmp.c:(.text+0x12e): undefined reference to `RTMP_LogSetCallback'
librtmp.c:(.text+0x4da): undefined reference to `RTMP_Init'
librtmp.c:(.text+0x4e5): undefined reference to `RTMP_SetupURL'
librtmp.c:(.text+0x506): undefined reference to `RTMP_Connect'
librtmp.c:(.text+0x518): undefined reference to `RTMP_ConnectStream'
librtmp.c:(.text+0x588): undefined reference to `RTMP_EnableWrite'
librtmp.c:(.text+0x5b8): undefined reference to `RTMP_Close'
libavformat/libavformat.a(librtmp.o): In function `rtmp_get_file_handle':
librtmp.c:(.text+0x9): undefined reference to `RTMP_Socket'
libavformat/libavformat.a(librtmp.o): In function `rtmp_write':
librtmp.c:(.text+0xc9): undefined reference to `RTMP_Write'
libavformat/libavformat.a(librtmp.o): In function `rtmp_read':
librtmp.c:(.text+0xd9): undefined reference to `RTMP_Read'
collect2: error: ld returned 1 exit status
make: *** [ffprobe_g] Error 1


it seems it can't find the include folder, but actually the build script
has set that env var already. pkg_config_path is also set.

ps: actually if i copy compiled librtmp files to /usr/lib64 it works , but
since i want to build a "static" build on a system i have no root access
to(in office), i can't do that.

full config.log here :  http://pastebin.com/pJgYHw3C

i saw it says it can't find lssl or lcrypto. but openssl is installed in my
system already.

[oglop at localhost ffmpeg-static-git]$ ldconfig -p | grep libssl
        libssl3.so (libc6,x86-64) => /lib64/libssl3.so
        libssl.so.10 (libc6,x86-64) => /lib64/libssl.so.10
        libssl.so (libc6,x86-64) => /lib64/libssl.so
[oglop at localhost ffmpeg-static-git]$ ldconfig -p | grep libcrypto
        libcrypto.so.10 (libc6,x86-64) => /lib64/libcrypto.so.10
        libcrypto.so (libc6,x86-64) => /lib64/libcrypto.so

i tried various suggestion from here too
http://stackoverflow.com/questions/20721445/undefined-reference-when-compiling-ffmpeg-with-librtmp-on-android

by adding

--enable-librtmp   --extra-cflags=-I/$TARGET_DIR/include
--extra-ldflags=-L$TARGET_DIR/lib"

but i got the same error as he did:
...
undefined reference to 'RTMP_Read'
...