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When compiling a SH2A kernel (e.g. se7206_defconfig or rsk7203_defconfig) using sh4-linux-gcc, linking fails with: net/built-in.o: In function `__sk_run_filter': net/core/filter.c:566: undefined reference to `__fpscr_values' net/core/filter.c:269: undefined reference to `__fpscr_values' ... net/built-in.o:net/core/filter.c:580: more undefined references to `__fpscr_values' follow This happens because sh4-linux-gcc doesn't support the "-m2a-nofpu", which is thus filtered out by "$(call cc-option, ...)". As compiling using sh4-linux-gcc is useful for compile coverage, also try passing "-m4-nofpu" (which is presumably filtered out when using a real sh2a-linux toolchain) to disable the generation of FPU instructions and references to __fpscr_values[]. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Tony Breeds <tony@bakeyournoodle.com> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Daniel Borkmann <dborkman@redhat.com> Cc: Magnus Damm <magnus.damm@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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