I wrote: > I've tried BOOT_CFLAGS/BOO_LDFLAGS and TCFLAGS, but it seems that > neither of these is used while compiling crtbegin.o. Just to clarify, there may be other cases where these variables are not used. I only know about crtbegin.o because I've set things up so compilation will fail if my flags are not used, so make stops at crtbegin.o. paul