From 51b563fc93c8cb5bff1d67a0a71c374e4a4ea049 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 20 Sep 2009 12:28:22 +0200 Subject: arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0 Albin Tonnerre reported: Bash 4 filters out variables which contain a dot in them. This happends to be the case of CPPFLAGS_vmlinux.lds. This is rather unfortunate, as it now causes build failures when using SHELL=/bin/bash to compile, or when bash happens to be used by make (eg when it's /bin/sh) Remove the common definition of CPPFLAGS_vmlinux.lds by pushing relevant stuff to either Makefile.build or the arch specific kernel/Makefile where we build the linker script. This is also nice cleanup as we move the information out where it is used. Notes for the different architectures touched: arm - we use an already exported symbol cris - we use a config symbol aleady available [Not build tested] mips - the jiffies complexity has moved to vmlinux.lds.S where we need it. Added a few variables to CPPFLAGS - they are only used by the linker script. [Not build tested] powerpc - removed assignment that is not needed [not build tested] sparc - simplified it using $(BITS) um - introduced a few new exported variables to deal with this xtensa - added options to CPP invocation [not build tested] Cc: Albin Tonnerre Cc: Russell King Cc: Mikael Starvik Cc: Jesper Nilsson Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: "David S. Miller" Cc: Jeff Dike Cc: Chris Zankel Signed-off-by: Sam Ravnborg --- arch/um/Makefile | 9 ++++----- arch/um/kernel/Makefile | 3 +++ arch/um/kernel/vmlinux.lds.S | 3 +++ 3 files changed, 10 insertions(+), 5 deletions(-) (limited to 'arch/um') diff --git a/arch/um/Makefile b/arch/um/Makefile index 0728def..fc633db 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -96,11 +96,10 @@ CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) $(call cc-option, -fno-stack-protector,) \ $(call cc-option, -fno-stack-protector-all,) -CONFIG_KERNEL_STACK_ORDER ?= 2 -STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) - -CPPFLAGS_vmlinux.lds = -U$(SUBARCH) -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \ - -DELF_FORMAT="$(ELF_FORMAT)" -DKERNEL_STACK_SIZE=$(STACK_SIZE) +# Options used by linker script +export LDS_START := $(START) +export LDS_ELF_ARCH := $(ELF_ARCH) +export LDS_ELF_FORMAT := $(ELF_FORMAT) # The wrappers will select whether using "malloc" or the kernel allocator. LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile index 388ec0a..1119233 100644 --- a/arch/um/kernel/Makefile +++ b/arch/um/kernel/Makefile @@ -3,6 +3,9 @@ # Licensed under the GPL # +CPPFLAGS_vmlinux.lds := -U$(SUBARCH) -DSTART=$(LDS_START) \ + -DELF_ARCH=$(LDS_ELF_ARCH) \ + -DELF_FORMAT=$(LDS_ELF_FORMAT) extra-y := vmlinux.lds clean-files := diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S index f8aeb44..16e49bf 100644 --- a/arch/um/kernel/vmlinux.lds.S +++ b/arch/um/kernel/vmlinux.lds.S @@ -1,3 +1,6 @@ + +KERNEL_STACK_SIZE = 4096 * (1 << CONFIG_KERNEL_STACK_ORDER); + #ifdef CONFIG_LD_SCRIPT_STATIC #include "uml.lds.S" #else -- cgit v1.1