FreeGLUT 3.2.1 changes break linking of Display/register

[gdevenyi]

Display and register don't have -lXxf86vm in their link list and fail to link. Adding them manually to link.txt allows the build to finish.

I'm not exactly sure the right place to add these, or if its a freeglut bug.

[vfonov]

on Ubuntu 20.04 Display and Register do not seem to link to it. Which os are you using?

[gdevenyi]

This is on niagara.computecanada.ca, with either Centos7 or RHEL7.

[vfonov]

could it be that freeglut's cmake build found this library and is linking to it, but only if the -dev version is present on the system? (I don't have it)

[gdevenyi]

It may be some unwanted cleverness in cmake. Given the freeglut change, can the Display/register linking inherit the proper linker settings from the FreeGLUT cmake?

In 18.04 with earlier FreeGLUT it doesn't seem to have linked against it on my system even though I have it.

[vfonov]

i will try

[vfonov]

my original transfer to the new FreeGLUT was to see if it works better with HiDPI displays , it doesn't seem to. Any ideas?

[gdevenyi]

Based on my reading of:
http://freeglut.sourceforge.net/progress.php
https://sourceforge.net/p/freeglut/mailman/message/30859054/
and
https://github.com/dcnieho/FreeGLUT/tree/feature_DPI_awareness

Very basic patches were proposed and not yet merged.
Trying out the patch appears to require patching our freeglut initialization as well: freeglut/freeglut@60272c9#diff-33fb9745ffcac6feed42503555088755b013c1c26055303ebaecbbda0b608917R243

[vfonov]

"If true, on window the application will be declared DPI aware. No effect on other platoforms"

[gdevenyi]

Sounds like its very very basic :)