Intel Quark requires a special assembler option to work around a hardware limitation. However, LTO optimization enabled by systemd's configuration prevents this assembler option from being passed. Thus we want to temporally disable LTO optimzation for Quark in systemd.
configure a intel-quark project. make -C build systemd.configure cd build/systemd/build grep OUR_CFLAGS Makefile See "-flto" in the flags.