https://bugs.gentoo.org/540856 respect user CFLAGS --- a/Makefile.am +++ b/Makefile.am @@ -23,7 +23,7 @@ numastat_CFLAGS = $(AM_CFLAGS) -std=gnu99 numademo_SOURCES = numademo.c stream_lib.c stream_lib.h mt.c mt.h clearcache.c clearcache.h numademo_CPPFLAGS = $(AM_CPPFLAGS) -DHAVE_STREAM_LIB -DHAVE_MT -DHAVE_CLEAR_CACHE -numademo_CFLAGS = -O3 -ffast-math -funroll-loops +numademo_CFLAGS = $(AM_CFLAGS) -ffast-math -funroll-loops if HAVE_TREE_VECTORIZE numademo_CFLAGS += -ftree-vectorize endif