fix glm install

[pca006132]

Fixes #777

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.34%. Comparing base (d437097) to head (367c90c).
Report is 9 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #782      +/-   ##
==========================================
- Coverage   91.84%   88.34%   -3.50%     
==========================================
  Files          37       55      +18     
  Lines        4976     7936    +2960     
  Branches        0      866     +866     
==========================================
+ Hits         4570     7011    +2441     
- Misses        406      925     +519     

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[elalish]

Huh, well now the CI is reproducing exactly the error from the issue on Mac. Go figure.

[pca006132]

Hmm, probably know what is happening her. The main problem is that we are using glm but it is not in our exported targets. But putting it in our exported target will make cmake complain as well. My previous "fix" is removing it from our install interface, but in that case probably the header path is messed up when using our library.

Anyway, will try to fix.

[pca006132]

I need to check if the glm installation works on ubuntu as well, will do tmr.