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-rw-r--r--arch/powerpc/Makefile25
1 files changed, 18 insertions, 7 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index f19dbaa1d5..051247027d 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -10,15 +10,26 @@
# Rewritten by Cort Dougan and Paul Mackerras
#
+ifdef cross_compiling
+ ifeq ($(CROSS_COMPILE),)
+ # Auto detect cross compiler prefix.
+ # Look for: (powerpc(64(le)?)?)(-unknown)?-linux(-gnu)?-
+ CC_ARCHES := powerpc powerpc64 powerpc64le
+ CC_SUFFIXES := linux linux-gnu unknown-linux-gnu
+ CROSS_COMPILE := $(call cc-cross-prefix, $(foreach a,$(CC_ARCHES), \
+ $(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
+ endif
+endif
+
HAS_BIARCH := $(call cc-option-yn, -m32)
# Set default 32 bits cross compilers for vdso and boot wrapper
CROSS32_COMPILE ?=
# If we're on a ppc/ppc64/ppc64le machine use that defconfig, otherwise just use
-# ppc64_defconfig because we have nothing better to go on.
+# ppc64le_defconfig because we have nothing better to go on.
uname := $(shell uname -m)
-KBUILD_DEFCONFIG := $(if $(filter ppc%,$(uname)),$(uname),ppc64)_defconfig
+KBUILD_DEFCONFIG := $(if $(filter ppc%,$(uname)),$(uname),ppc64le)_defconfig
new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
@@ -161,7 +172,7 @@ CFLAGS-y += $(CONFIG_TUNE_CPU)
asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
-KBUILD_CPPFLAGS += -I $(srctree)/arch/$(ARCH) $(asinstr)
+KBUILD_CPPFLAGS += -I $(srctree)/arch/powerpc $(asinstr)
KBUILD_AFLAGS += $(AFLAGS-y)
KBUILD_CFLAGS += $(call cc-option,-msoft-float)
KBUILD_CFLAGS += $(CFLAGS-y)
@@ -232,7 +243,7 @@ BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
-boot := arch/$(ARCH)/boot
+boot := arch/powerpc/boot
$(BOOT_TARGETS1): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
@@ -336,7 +347,7 @@ PHONY += $(generated_configs)
define archhelp
echo '* zImage - Build default images selected by kernel config'
- echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
+ echo ' zImage.* - Compressed kernel image (arch/powerpc/boot/zImage.*)'
echo ' uImage - U-Boot native image format'
echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
echo ' versions which do not support device trees'
@@ -347,12 +358,12 @@ define archhelp
echo ' (your) ~/bin/$(INSTALLKERNEL) or'
echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
echo ' install to $$(INSTALL_PATH) and run lilo'
- echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
+ echo ' *_defconfig - Select default config from arch/powerpc/configs'
echo ''
echo ' Targets with <dt> embed a device tree blob inside the image'
echo ' These targets support board with firmware that does not'
echo ' support passing a device tree directly. Replace <dt> with the'
- echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
+ echo ' name of a dts file from the arch/powerpc/boot/dts/ directory'
echo ' (minus the .dts extension).'
echo
$(foreach cfg,$(generated_configs),