libopencm3/libopencm3 — pull request #15 by karlp (2012-06-28 19:48:54+00:00)
Title: Fix link flags to specify cpu instead of (wrong) arch.

-march=armv7 is NOT right for cortex-m3, and results in unexpected
arm code being linked in when using multilib toolchains

(Note, this should be applied to the f2 tree as well, but I don't have any f2 devices to double check)