- CFLAGS += -mfloat-abi=hard -ffast-math -mword-relocations
- CFLAGS += -marm -mfpu=neon -mcpu=cortex-a9 -march=armv7-a
+ CFLAGS += -marm -mfpu=neon -mcpu=cortex-a9 -march=armv7-a -mfloat-abi=hard -ffast-math
+ CFLAGS += -fno-asynchronous-unwind-tables -ftree-vectorize -funroll-loops
+ CFLAGS += -mword-relocations -fno-unwind-tables
+ CFLAGS += -fno-optimize-sibling-calls