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don't specify "CC=<nothing>" on kernel build command line

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If KERNEL_CC isn't set, we end up with a "CC=" on the kernel build
command-line. We don't always need CC, as the CROSS_COMPILE flag does
the job instead. In fact, specifying CC messes up the build when we're
using a biarch compiler.

This change doesn't specify CC= if the KERNEL_CC variable is empty.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9408 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2007-10-23 06:23:23 +00:00
parent d274551d10
commit 2e05912189
2 changed files with 12 additions and 8 deletions
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12
include/kernel-defaults.mk
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@ -40,6 +40,10 @@ KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
ARCH="$(LINUX_KARCH)" \ ARCH="$(LINUX_KARCH)" \
CONFIG_SHELL="$(BASH)" CONFIG_SHELL="$(BASH)"
ifneq (,$(KERNEL_CC))
KERNEL_MAKEOPTS += CC="$(KERNEL_CC)"
endif
# defined in quilt.mk # defined in quilt.mk
Kernel/Patch:=$(Kernel/Patch/Default) Kernel/Patch:=$(Kernel/Patch/Default)
define Kernel/Prepare/Default define Kernel/Prepare/Default
@ -50,11 +54,11 @@ endef
define Kernel/Configure/2.4 define Kernel/Configure/2.4
$(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
$(MAKE) $(KERNEL_MAKEOPTS) CC="$(KERNEL_CC)" oldconfig include/linux/compile.h include/linux/version.h $(MAKE) $(KERNEL_MAKEOPTS) oldconfig include/linux/compile.h include/linux/version.h
$(MAKE) $(KERNEL_MAKEOPTS) dep $(MAKE) $(KERNEL_MAKEOPTS) dep
endef endef
define Kernel/Configure/2.6 define Kernel/Configure/2.6
-$(MAKE) $(KERNEL_MAKEOPTS) CC="$(KERNEL_CC)" oldconfig prepare scripts -$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts
endef endef
define Kernel/Configure/Default define Kernel/Configure/Default
$(LINUX_CONFCMD) > $(LINUX_DIR)/.config.target $(LINUX_CONFCMD) > $(LINUX_DIR)/.config.target
@ -66,7 +70,7 @@ endef
define Kernel/CompileModules/Default define Kernel/CompileModules/Default
rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map
$(MAKE) $(KERNEL_MAKEOPTS) CC="$(KERNEL_CC)" modules $(MAKE) $(KERNEL_MAKEOPTS) modules
endef endef
ifeq ($(KERNEL),2.6) ifeq ($(KERNEL),2.6)
@ -89,7 +93,7 @@ ifeq ($(KERNEL),2.6)
endif endif
define Kernel/CompileImage/Default define Kernel/CompileImage/Default
$(call Kernel/SetInitramfs) $(call Kernel/SetInitramfs)
$(MAKE) $(KERNEL_MAKEOPTS) CC="$(KERNEL_CC)" $(KERNELNAME) $(MAKE) $(KERNEL_MAKEOPTS) $(KERNELNAME)
$(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL) $(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
$(KERNEL_CROSS)objcopy -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf $(KERNEL_CROSS)objcopy -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf
endef endef

8
include/kernel.mk
View File

@ -23,11 +23,11 @@ else
endif endif
ifneq (,$(findstring uml,$(BOARD))) ifneq (,$(findstring uml,$(BOARD)))
KERNEL_CC:=$(HOSTCC) KERNEL_CC?=$(HOSTCC)
KERNEL_CROSS:= KERNEL_CROSS?=
else else
KERNEL_CC:=$(TARGET_CC) KERNEL_CC?=$(TARGET_CC)
KERNEL_CROSS:=$(TARGET_CROSS) KERNEL_CROSS?=$(TARGET_CROSS)
endif endif
PATCH_DIR ?= ./patches$(shell [ -d "./patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true ) PATCH_DIR ?= ./patches$(shell [ -d "./patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )