avcodec and avformat libraries in ubuntu

ivorytower27 · 09-30-2005, 02:57 AM

i have recently installed avcodec and avformat libraries in my ubuntu pc (through a ffmpeg package) and tried using them. the program (in c++) gets the following error:

undefined reference to av_register_all()
...

the same error message is displayed for each reference to the library methods

weird thing is, the program is able to see the header files but not their methods.
how can i configure linux (or g++) for it to be able to see the methods?
what could be causing the problem?

foo_bar_foo · 09-30-2005, 10:07 PM

need to link the library to the executable with -l<name> name is the name of the library without lib prefix or .so suffix

ivorytower27 · 10-11-2005, 06:43 PM

thanks for the help and response. i did just that. it compiled and stopped generating errors regarding undefined references to methods but when i start running the the program it says:

error while loading shared libraries: libavformat.so: cannot open shared object file: No such file or directory

i check and confirmed that the libraries are indeed installed in the usr/local/lib/ folder. i wonder what causes this error? any insight would be a lot of help...