gcc -### -march=native -E /usr/include/stdlib.h 2>&1 | grep "/usr/libexec/gcc/.*cc1" /usr/libexec/gcc/i686-pc-linux-gnu/4.8.4/cc1 -E -quiet /usr/include/stdlib.h "-march=core-avx-i" -mno-cx16 -mno-sahf -mno-movbe -mno-aes -mno-pclmul -mno-popcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-bmi2 -mno-tbm -mno-avx -mno-avx2 -mno-sse4.2 -mno-sse4.1 -mno-lzcnt -mno-rtm -mno-hle -mno-rdrnd -mno-f16c -mno-fsgsbase -mno-rdseed -mno-prfchw -mno-adx -mfxsr -mno-xsave -mno-xsaveopt --param "l1-cache-size=32" --param "l1-cache-line-size=64" --param "l2-cache-size=6144" "-mtune=core-avx-i"