Commit 924dd50b authored by Michael Neuling's avatar Michael Neuling Committed by Benjamin Herrenschmidt

powerpc: Fix error when cross building TAGS & cscope

Currently if I cross build TAGS or cscope from x86 I get this:
  % make ARCH=powerpc TAGS
  gcc-4.8.real: error: unrecognized command line option ‘-mbig-endian’
  GEN     TAGS
  %

I'm not setting CROSS_COMPILE= as logically I shouldn't need to and I
haven't needed to in the past when building TAGS or cscope.  Also, the
above completess correct as the error is not fatal to the build.

This was caused by:
    commit d72b0801
    Author: Ian Munsie <imunsie@au1.ibm.com>
    powerpc: Add ability to build little endian kernels

The below fixes this by testing for the -mbig-endian option before
adding it.

I've not done the same thing in the little endian case as if
-mlittle-endian doesn't exist, we probably want to fail quickly as you
probably have an old big endian compiler.
Signed-off-by: default avatarMichael Neuling <mikey@neuling.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 02ce6e87
...@@ -75,8 +75,10 @@ LDEMULATION := lppc ...@@ -75,8 +75,10 @@ LDEMULATION := lppc
GNUTARGET := powerpcle GNUTARGET := powerpcle
MULTIPLEWORD := -mno-multiple MULTIPLEWORD := -mno-multiple
else else
ifeq ($(call cc-option-yn,-mbig-endian),y)
override CC += -mbig-endian override CC += -mbig-endian
override AS += -mbig-endian override AS += -mbig-endian
endif
override LD += -EB override LD += -EB
LDEMULATION := ppc LDEMULATION := ppc
GNUTARGET := powerpc GNUTARGET := powerpc
......
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