Could openframeworks projects link with external shared libraries (Linux)

beginners
#1

Hi All,

As a new comer to openframeworks projects I want to know that could I include some external Linux shared library header files into a “.cpp” file of an openframeworks project and then compile the “.cpp” file and link it to the external shared library’s “.so” file ?

I know that I could add “USER_CFLAGS = -I/path/to/external_shared_library/header.h” and add “USER_LIBS = -lexternal_shared_library” in “config.make”. But how could I add a flag for openframeworks to search for the location of the external shared library in linking process, e.g. “-L/path/to/external_shared_library” and how could openframeworks finds the external shared library when I run the compiled program (assume that the external shared library is not in the standard locations such as /usr/lib, /usr/local/lib) ?

openframeworks would be even more interesting if it could link to the world of external shared libraries.

Thanks for any suggestion.

Regards
Lawrence

#2

you can actually link to dynamic libraries in the same way as static, just add the library to USER_LIBS

If they are in the standard location, then if the library is something like:

  
libsomelib.so

you can just link to it addin:

  
-lsomelib

if it’s not you can use:

  
-lsomelib  
-LpathToLib

or just the whole path:

  
pathToLib/libsomelib.so

then the program needs to know where to find the library when it runs, for that in LD_FLAGS add:

  
-Wl,-rpath=pathToLib
1 Like
#3

Thanks a lot, arturo.