Check whether gcc supports -mr10-cache-barrier=1 and issue a cleaner error message if not. This option is needed to build working SGI IP28 kernels. Signed-off-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> --- arch/mips/Makefile | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 72097da..1c62381 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -482,10 +482,13 @@ endif # be 16kb aligned or the handling of the current variable will break. # Simplified: what IP22 does at 128MB+ in ksegN, IP28 does at 512MB+ in xkphys # -#core-$(CONFIG_SGI_IP28) += arch/mips/sgi-ip22/ arch/mips/arc/arc_con.o +ifdef CONFIG_SGI_IP28 + ifeq ($(call cc-option-yn,-mr10k-cache-barrier=1), n) + $(error gcc doesn't support needed option -mr10k-cache-barrier=1) + endif +endif core-$(CONFIG_SGI_IP28) += arch/mips/sgi-ip22/ cflags-$(CONFIG_SGI_IP28) += -mr10k-cache-barrier=1 -Iinclude/asm-mips/mach-ip28 -#cflags-$(CONFIG_SGI_IP28) += -Iinclude/asm-mips/mach-ip28 load-$(CONFIG_SGI_IP28) += 0xa800000020004000 #
