Re: x11/picom update

On Thu, 15 Jun 2023, pin wrote:

> Run-time dependency gl found: YES 19.1.17
> Run-time dependency egl found: YES 19.1.17
>

For some reason, the preference in -HEAD is to compile and install
the older Mesa library in /usr/xsrc/external/mit/MesaLib.old instead
of the newer 21.3.7 in /usr/xsrc/external/mit/MesaLib.

> ../src/backend/gl/egl.c:42:8: error: unknown type name 'PFNEGLGETPLATFORMDISPLAYPROC'
>   42 | static PFNEGLGETPLATFORMDISPLAYPROC eglGetPlatformDisplayProc = NULL;
>      |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>

```
$ fgrep -r PFNEGLGETPLATFORMDISPLAYPROC \
 	/usr/xsrc/external/mit/MesaLib.old/dist/include/EGL/ \
 	/usr/X11R7/include/EGL/

 	... crickets ...

$ fgrep -r PFNEGLGETPLATFORMDISPLAYPROC \
 	/usr/xsrc/external/mit/MesaLib/dist/include/EGL/
/usr/xsrc/external/mit/MesaLib/dist/include/EGL/egl.h:typedef EGLDisplay (EGLAPIENTRYP PFNEGLGETPLATFORMDISPLAYPROC) (EGLenum platform, void *native_display, const EGLAttrib *attrib_list); 
$
```

I should think compiling and installing MesaLib-21.3.7 should fix this
issue, but, better ask why the old MesaLibi-19.1.x is still preferred.

Adding `HAVE_MESA_VER=21' in /etc/mk.conf and recompiling the system
(or, just the Mesa library?) should get you the new MesaLib.

-RVP