The libsepol/src/Makefile has the below lines for CFLAGS: CFLAGS ?= -Werror -Wall -W -Wundef -Wshadow -Wmissing-format-attribute -O2 override CFLAGS += -I. -I../include -D_GNU_SOURCE Does anyone have a preference where I add the -fno-semantic-interposition? I was thinking the conditional assignment because of the comment made about packagers overriding things on the selinux drop dso patch series.