build: Link against libm
Fixes build in case none of our dependenices adds -lm to LDFLAGS. Since gnome-robot's own code uses atan2, it is our own responsibility to ensure the linking against libm.
Fixes #19 (closed)
Fixes build in case none of our dependenices adds -lm to LDFLAGS. Since gnome-robot's own code uses atan2, it is our own responsibility to ensure the linking against libm.
Fixes #19 (closed)