Hi Joseph, I hit the following problem when trying to build a ppc64 Linux kernel from svn today:
# gcc -Wp,-MD,scripts/basic/.fixdep.d -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -o scripts/basic/fixdep scripts/basic/fixdep.c cc1: error: unrecognized command line option ‘-MD’ Backing this out fixed it: | jsm28 | 2010-08-13 08:52:49 +1000 (Fri, 13 Aug 2010) | 11 lines * gcc.c (cpp_unique_options): Generate -MDX and -MMDX from -MD and -MMD. c-family: * c.opt (MD, MMD): Change to MDX and MMDX. * c-opts.c (c_common_handle_option): Use OPT_MMD and OPT_MMDX. fortran: * lang.opt (MD, MMD): Change to MDX and MMDX. * cpp.c (gfc_cpp_handle_option): Use OPT_MMD and OPT_MMDX. Anton