Raspberry Pi 4: Where to put raylib after I've compiled it to get dub to find and link properly

[Decabytes]

On Monday, 8 March 2021 at 04:22:14 UTC, Mike Parker wrote:
> On Monday, 8 March 2021 at 03:16:40 UTC, Decabytes wrote:
>> I just downloaded Raylib on the pi 4, which unfortunately 
>> wasn't in the repo on Raspberry Pi OS. On my computer main 
>> comp, I can link it by just adding raylib to the libs section 
>> of the dub.sdl because I downloaded it from the repo, but 
>> because I've compiled it from source on the RPI that doesn't 
>> work. All the files are located at 
>> /home/pi/Desktop/raylib/src. I've tried variations of 
>> /home/pi/Desktop/raylib/src and /home/pi/Desktop/raylib, but I 
>> can't seem to get it to work. Is there a place I can put the 
>> code so that the original libs "raylib" line will work? Or is 
>> there just a different way to link it I'm not understanding? I 
>> don't really understand how linking works
>
> The linker needs to know two pieces of information to link 
> library dependencies: the library name, and the path to the 
> library. The "libs" directive in the dub.json handles the name.
>
> Every operating system has a default library search path. If 
> the library is not on that search path, then you'll need to 
> specify the path. In your dub.json, you should be able to do 
> this with an "lflags" directive, using "-L/path/to/lib". The 
> path can be absolute or relative to the directory in which 
> you're compiling.
>
> However, on Unix-like systems, libraries are usually installed 
> in a well-known location on the default search path, like 
> /usr/lib or /usr/local/lib. The raylib Makefile has an 
> "install" target, so you should be able to run "make install" 
> to put the library in the right place. Or you can copy it 
> manually.

This is helpful! I've gotten a little farther. after copying 
libraylib.a from the src directory into the /raylib directory, I 
was successfully able to run make install. Which installed these 
header files

cp --update raylib.h /usr/local/include/raylib.h
cp --update raymath.h /usr/local/include/raymath.h
cp --update rlgl.h /usr/local/include/rlgl.h
cp --update physac.h /usr/local/include/physac.h

unfortunately it still didn't like me just putting "raylib" in 
the libs section, but I at least got all the undefined reference 
errors to stop happening once I changed it to libs "raylib" "gl" 
"gbm" "drm" "egl".

I'm encountering one more error when I run dub now.

INFO: Initializing raylib 3.5
INFO: DISPLAY: No graphic card set, trying card1
WARNING: DISPLAY: Failed get DRM resources
Program exited with code -11

I have the drm lib linked, so I'm not entirely sure what is going 
on there. I tried PLATFORM=PLATFORM_DESKTOP 
GRAPHICS=GRAPHICS_API_OPENGL_21, and rerunning make install, but 
that didn't seem to help.