Created attachment 176590 [details] fix for XCCs which are not patched to support -fformat-extensions This patch compliments sys/conf/kern.mk's test for MK_FORMAT_EXTENSIONS == "no", which is only available by sys/conf/kern.options, so can't use that same test in share/mk/bsd.sys.mk here. Patch tested successfully with 11.0-RELEASE-p3 for i386 using xtoochain built from unpatched gcc-5.4.0 supporting --sysroot.