https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106187
--- Comment #27 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- BTW, compile flags for an arm-none-eabi compiler are: cc1plus -march=armv7-a+fp -mfloat-abi=hard -O2 -quiet -mthumb -fno-short-enums -fno-exceptions -fvisibility-inlines-hidden -fmath-errno -fmerge-all-constants -fvisibility=hidden -fstack-protector-strong -std=c++11