Srt: test-c-server example. undefined reference to `srt_startup', `srt_create_socket' and other

[UnderOverCovered]

Hello, can you help me please? When I am compiling test-c-server, from examples, I am getting an error:
gcc fork2.c -o fork
/tmp/ccqhZ97y.o: In functionmain': fork2.c:(.text+0x76): undefined reference to srt_startup'
fork2.c:(.text+0x8c): undefined reference tosrt_create_socket' fork2.c:(.text+0xa4): undefined reference to srt_getlasterror_str'
fork2.c:(.text+0x167): undefined reference tosrt_setsockflag' fork2.c:(.text+0x18f): undefined reference to srt_bind' fork2.c:(.text+0x1a7): undefined reference to srt_getlasterror_str'
fork2.c:(.text+0x1ed): undefined reference tosrt_listen'
fork2.c:(.text+0x205): undefined reference tosrt_getlasterror_str' fork2.c:(.text+0x261): undefined reference to srt_accept'
fork2.c:(.text+0x2ab): undefined reference tosrt_recvmsg' fork2.c:(.text+0x2c3): undefined reference to srt_getlasterror_str'
fork2.c:(.text+0x331): undefined reference tosrt_close' fork2.c:(.text+0x349): undefined reference to srt_getlasterror_str'
fork2.c:(.text+0x37f): undefined reference tosrt_cleanup'`
collect2: error: ld returned 1 exit status

So what I did. I added a path to #include "srt/srt.h", because without it I got an fatal error. Also I tried to use <> insteed "", full path, nothing works...
I installed srt on ubuntu 18 via git clone and make.
sudo apt-get install tclsh pkg-config cmake libssl-dev build-essential
git clone https://github.com/Haivision/srt
./configure
make
sudo make install
Thank you in advance

[ethouris]

This command you showed doesn't look like compiling test-c-server.

[maxsharabayko]

@UnderOverCovered
The best way to build examples is to use cmake.
cmake ./ -DENABLE_EXAMPLES=ON
cmake --build ./
Or similar with configure:
./configure --enable-examples
make

[maxsharabayko]

And the message "undefined reference to srt_startup',srt_create_socket' and other" means that SRT library is not linked to the example application.

[UnderOverCovered]

This command you showed doesn't look like compiling test-c-server

I copied test-c-server code in my own file, for test. I planned to modify it for my own goals. Sorry for confusion, fork2.c file is a full copy of test-c-server with include correction (#include"srt/srt.h")

[UnderOverCovered]

@maxlovic thank you, I will try it

[ethouris]

If so, then please make an installation package of SRT library first, then install it, and then use pkg-config to obtain appropriate cflags and libs for apps that depend on it.

Kinda

gcc fork2.c -o fork $(pkg-config --cflags --libs srt)

[UnderOverCovered]

@ethouris thank you, i'll try

[UnderOverCovered]

@ethouris Maybe I missed something, gcc made compilation successful, but when I am running code, it returns an error: ./fork: error while loading shared libraries: libsrt.so.1: cannot open shared object file: No such file or directory

Also, I do not touched the code (#include "srt" like in test-c-server example)

[ethouris]

Well, did you install the library? If so, do you have the path to your library in the ld.so configuration or LD_LIBRARY_PATH variable?

[UnderOverCovered]

O, yes I got it. -- Install configuration: "Release" -- Up-to-date: /usr/local/lib/libsrt.so.1.3.4

Ok, I will add it by LD_LIBRARY_PATH

[UnderOverCovered]

About ld.so... I don't know where it is, sorry

[UnderOverCovered]

Ok, I have done this:
export LD_LIBRARY_PATH="/usr/local/lib/libsrt.so.1.3.4"

and this:
export LD_LIBRARY_PATH="/usr/local/lib/libsrt.so.1"
It doesn't helps

[ethouris]

Response to this largely exceeds the scope of the SRT library or associated applications.

[UnderOverCovered]

Excuse me, maybe it is language barrier, so can't understand correctly. So, you mean, that SRT can't work with custom c codes?

[maxsharabayko]

Use export LD_LIBRARY_PATH="/usr/local/lib/

[UnderOverCovered]

@maxlovic Thank you! That works! @ethouris Thank you too! Now we can close that issue. Good luck, SRT is the best!