fix: use -M instead of -m consistently
fix: use -M instead of -m consistently

This blocked gentoo projects from running.

Former-commit-id: 4aeb1ab3da9431d725dfee31fb1a5a1baacbdf95
Former-commit-id: db0a9918cec423dd0928651f15be43c2dfb5cfa0 [formerly 8778f34ab65357b7da262110e30eb5d7a33dc263] [formerly c265c8cad5567bfe9dfb816363f25d3dca485fee [formerly 488300bc55af57004bfb77e384a8f5e4fbc4a641]]
Former-commit-id: 9b14a29862744e1a67f6b351a8277ccb750dc335 [formerly 601c65ff1a1dcf5212d1e7c33bbcff53b9098316]
Former-commit-id: ad8b55ee6364eaaad2214f302f22c6374c4768a8
PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild