Incompatible CFLAGS for kernel module

Incompatible CFLAGS for kernel module

[Shaz]

Hi,

I am porting tpm emulator to versatilepb, which is an arm platform. I
have some problem with CFLAGS from /arch/arm/Makefile when building
the kernel module for this software. I cannot figure out what to do in
this case. Following is the error:

[root@develbox tpm_emulator-0.5]# make
Making all in tpmd
make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd'
Making all in tpmd_dev
make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd_dev'
  CC [M]  /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o
cc1: error: unrecognized command line option "-mlittle-endian"
cc1: error: unrecognized command line option "-mapcs"
cc1: error: unrecognized command line option "-mno-sched-prolog"
cc1: error: unrecognized command line option "-mabi=aapcs-linux"
cc1: error: unrecognized command line option "-mno-thumb-interwork"
/embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
(armv4t) for -march= switch
/embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
(arm9tdmi) for -mtune= switch
make[3]: *** [/embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o] Error 1
make[2]: *** [_module_/embedded/tpm_emulator-0.5/tpmd_dev] Error 2
make[1]: *** [all] Error 2
make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd_dev'
make: *** [all-recursive] Error 255

kindly help me understand the core issue here and point out some solutions.

-- 
Shaz

Re: Incompatible CFLAGS for kernel module

[Sam Ravnborg]

On Fri, Jul 04, 2008 at 10:34:56PM +0500, Shaz wrote:
> Hi,
> 
> I am porting tpm emulator to versatilepb, which is an arm platform. I
> have some problem with CFLAGS from /arch/arm/Makefile when building
> the kernel module for this software. I cannot figure out what to do in
> this case. Following is the error:
> 
> [root@develbox tpm_emulator-0.5]# make
> Making all in tpmd
> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd'
> make[1]: Nothing to be done for `all'.
> make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd'
> Making all in tpmd_dev
> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd_dev'
>   CC [M]  /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o
> cc1: error: unrecognized command line option "-mlittle-endian"
> cc1: error: unrecognized command line option "-mapcs"
> cc1: error: unrecognized command line option "-mno-sched-prolog"
> cc1: error: unrecognized command line option "-mabi=aapcs-linux"
> cc1: error: unrecognized command line option "-mno-thumb-interwork"
> /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
> (armv4t) for -march= switch
> /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
> (arm9tdmi) for -mtune= switch
> make[3]: *** [/embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o] Error 1
> make[2]: *** [_module_/embedded/tpm_emulator-0.5/tpmd_dev] Error 2
> make[1]: *** [all] Error 2
> make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd_dev'
> make: *** [all-recursive] Error 255
> 
> kindly help me understand the core issue here and point out some solutions.

A quick guess is that you use your host gcc and not your target gcc.
You most likely have to set CROSS_COMPILE=...

Try with "make V=1" to see the exact gcc command line.

If you continue to rn into trouble please post your Makefile.

	Sam

Re: Incompatible CFLAGS for kernel module

[Shaz]

[-- Attachment #1: Type: text/plain, Size: 2387 bytes --]

On Sat, Jul 5, 2008 at 1:32 AM, Sam Ravnborg <sam@ravnborg.org> wrote:
> On Fri, Jul 04, 2008 at 10:34:56PM +0500, Shaz wrote:
>> Hi,
>>
>> I am porting tpm emulator to versatilepb, which is an arm platform. I
>> have some problem with CFLAGS from /arch/arm/Makefile when building
>> the kernel module for this software. I cannot figure out what to do in
>> this case. Following is the error:
>>
>> [root@develbox tpm_emulator-0.5]# make
>> Making all in tpmd
>> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd'
>> make[1]: Nothing to be done for `all'.
>> make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd'
>> Making all in tpmd_dev
>> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd_dev'
>>   CC [M]  /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o
>> cc1: error: unrecognized command line option "-mlittle-endian"
>> cc1: error: unrecognized command line option "-mapcs"
>> cc1: error: unrecognized command line option "-mno-sched-prolog"
>> cc1: error: unrecognized command line option "-mabi=aapcs-linux"
>> cc1: error: unrecognized command line option "-mno-thumb-interwork"
>> /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
>> (armv4t) for -march= switch
>> /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
>> (arm9tdmi) for -mtune= switch
>> make[3]: *** [/embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o] Error 1
>> make[2]: *** [_module_/embedded/tpm_emulator-0.5/tpmd_dev] Error 2
>> make[1]: *** [all] Error 2
>> make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd_dev'
>> make: *** [all-recursive] Error 255
>>
>> kindly help me understand the core issue here and point out some solutions.
>
> A quick guess is that you use your host gcc and not your target gcc.
> You most likely have to set CROSS_COMPILE=...
>
> Try with "make V=1" to see the exact gcc command line.
>
> If you continue to rn into trouble please post your Makefile.
I tried make V=1 but the loads of info was given for the things that
went right but nothing noticeable where the error is.
I've attached my arch/arm/Makefile. My build, host and target are on
same system. i am emulating the board with Qemu. The process is very
conventional. I've mounted my rootfs with -o loop and kernel and extra
modules go there with INSTALL_MOD_PATH and INSTALL_MOD_DIR. ARCH=arm
and CROSS_COMPILE=arm-linux-
>
>        Sam
>



-- 
Shaz

[-- Attachment #2: Makefile --]
[-- Type: application/octet-stream, Size: 9736 bytes --]

#
# arch/arm/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1995-2001 by Russell King

LDFLAGS_vmlinux	:=-p --no-undefined -X
CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
OBJCOPYFLAGS	:=-O binary -R .note -R .note.gnu.build-id -R .comment -S
GZFLAGS		:=-9
#KBUILD_CFLAGS	+=-pipe
# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
KBUILD_CFLAGS	+=$(call cc-option,-marm,)

# Do not use arch/arm/defconfig - it's always outdated.
# Select a platform tht is kept up-to-date
KBUILD_DEFCONFIG := versatile_defconfig

# defines filename extension depending memory manement type.
ifeq ($(CONFIG_MMU),)
MMUEXT		:= -nommu
endif

ifeq ($(CONFIG_FRAME_POINTER),y)
KBUILD_CFLAGS	+=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
endif

ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
KBUILD_CPPFLAGS	+= -mbig-endian
AS		+= -EB
LD		+= -EB
else
KBUILD_CPPFLAGS	+= -mlittle-endian
AS		+= -EL
LD		+= -EL
endif

comma = ,

# This selects which instruction set is used.
# Note that GCC does not numerically define an architecture version
# macro, but instead defines a whole series of macros which makes
# testing for a specific architecture or later rather impossible.
arch-$(CONFIG_CPU_32v7)		:=-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7a,-march=armv5t -Wa$(comma)-march=armv7a)
arch-$(CONFIG_CPU_32v6)		:=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
# Only override the compiler option if ARMv6. The ARMv6K extensions are
# always available in ARMv7
ifeq ($(CONFIG_CPU_32v6),y)
arch-$(CONFIG_CPU_32v6K)	:=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
endif
arch-$(CONFIG_CPU_32v5)		:=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
arch-$(CONFIG_CPU_32v4T)	:=-D__LINUX_ARM_ARCH__=4 -march=armv4t
arch-$(CONFIG_CPU_32v4)		:=-D__LINUX_ARM_ARCH__=4 -march=armv4
arch-$(CONFIG_CPU_32v3)		:=-D__LINUX_ARM_ARCH__=3 -march=armv3

# This selects how we optimise for the processor.
tune-$(CONFIG_CPU_ARM610)	:=-mtune=arm610
tune-$(CONFIG_CPU_ARM710)	:=-mtune=arm710
tune-$(CONFIG_CPU_ARM7TDMI)	:=-mtune=arm7tdmi
tune-$(CONFIG_CPU_ARM720T)	:=-mtune=arm7tdmi
tune-$(CONFIG_CPU_ARM740T)	:=-mtune=arm7tdmi
tune-$(CONFIG_CPU_ARM9TDMI)	:=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM940T)	:=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM946T)	:=$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
tune-$(CONFIG_CPU_ARM920T)	:=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM922T)	:=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM925T)	:=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM926T)	:=-mtune=arm9tdmi
tune-$(CONFIG_CPU_SA110)	:=-mtune=strongarm110
tune-$(CONFIG_CPU_SA1100)	:=-mtune=strongarm1100
tune-$(CONFIG_CPU_XSCALE)	:=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
tune-$(CONFIG_CPU_XSC3)		:=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
tune-$(CONFIG_CPU_V6)		:=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)

ifeq ($(CONFIG_AEABI),y)
CFLAGS_ABI	:=-mabi=aapcs-linux -mno-thumb-interwork
else
CFLAGS_ABI	:=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
endif

# Need -Uarm for gcc < 3.x
KBUILD_CFLAGS	+=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
KBUILD_AFLAGS	+=$(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float

CHECKFLAGS	+= -D__arm__

#Default value
head-y		:= arch/arm/kernel/head$(MMUEXT).o arch/arm/kernel/init_task.o
textofs-y	:= 0x00008000

 machine-$(CONFIG_ARCH_RPC)	   := rpc
 machine-$(CONFIG_ARCH_EBSA110)	   := ebsa110
 machine-$(CONFIG_ARCH_CLPS7500)   := clps7500
  incdir-$(CONFIG_ARCH_CLPS7500)   := cl7500
 machine-$(CONFIG_FOOTBRIDGE)	   := footbridge
  incdir-$(CONFIG_FOOTBRIDGE)	   := ebsa285
 machine-$(CONFIG_ARCH_CO285)	   := footbridge
  incdir-$(CONFIG_ARCH_CO285)	   := ebsa285
 machine-$(CONFIG_ARCH_SHARK)	   := shark
 machine-$(CONFIG_ARCH_SA1100)	   := sa1100
ifeq ($(CONFIG_ARCH_SA1100),y)
# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 textofs-$(CONFIG_SA1111)	   := 0x00208000
endif
 machine-$(CONFIG_ARCH_PXA)	   := pxa
 machine-$(CONFIG_ARCH_L7200)	   := l7200
 machine-$(CONFIG_ARCH_INTEGRATOR) := integrator
 textofs-$(CONFIG_ARCH_CLPS711X)   := 0x00028000
 machine-$(CONFIG_ARCH_CLPS711X)   := clps711x
 machine-$(CONFIG_ARCH_IOP32X)	   := iop32x
 machine-$(CONFIG_ARCH_IOP33X)	   := iop33x
 machine-$(CONFIG_ARCH_IOP13XX)	   := iop13xx
 machine-$(CONFIG_ARCH_IXP4XX)	   := ixp4xx
 machine-$(CONFIG_ARCH_IXP2000)    := ixp2000
 machine-$(CONFIG_ARCH_IXP23XX)    := ixp23xx
 machine-$(CONFIG_ARCH_OMAP1)	   := omap1
 machine-$(CONFIG_ARCH_OMAP2)	   := omap2
  incdir-$(CONFIG_ARCH_OMAP)	   := omap
 machine-$(CONFIG_ARCH_S3C2410)	   := s3c2410
 machine-$(CONFIG_ARCH_LH7A40X)	   := lh7a40x
 machine-$(CONFIG_ARCH_VERSATILE)  := versatile
 machine-$(CONFIG_ARCH_IMX)	   := imx
 machine-$(CONFIG_ARCH_H720X)	   := h720x
 machine-$(CONFIG_ARCH_AAEC2000)   := aaec2000
 machine-$(CONFIG_ARCH_REALVIEW)   := realview
 machine-$(CONFIG_ARCH_AT91)	   := at91
 machine-$(CONFIG_ARCH_EP93XX)	   := ep93xx
 machine-$(CONFIG_ARCH_PNX4008)	   := pnx4008
 machine-$(CONFIG_ARCH_NETX)	   := netx
 machine-$(CONFIG_ARCH_NS9XXX)	   := ns9xxx
 textofs-$(CONFIG_ARCH_NS9XXX)	   := 0x00108000
 machine-$(CONFIG_ARCH_DAVINCI)	   := davinci
 machine-$(CONFIG_ARCH_KS8695)     := ks8695
  incdir-$(CONFIG_ARCH_MXC)	   := mxc
 machine-$(CONFIG_ARCH_MX3)	   := mx3
 machine-$(CONFIG_ARCH_ORION)	   := orion
 machine-$(CONFIG_ARCH_MSM7X00A)   := msm

ifeq ($(CONFIG_ARCH_EBSA110),y)
# This is what happens if you forget the IOCS16 line.
# PCMCIA cards stop working.
CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
export CFLAGS_3c589_cs.o
endif

# The byte offset of the kernel image in RAM from the start of RAM.
TEXT_OFFSET := $(textofs-y)

ifeq ($(incdir-y),)
incdir-y := $(machine-y)
endif
INCDIR   := arch-$(incdir-y)

ifneq ($(machine-y),)
MACHINE  := arch/arm/mach-$(machine-y)/
else
MACHINE  :=
endif

export	TEXT_OFFSET GZFLAGS MMUEXT

# Do we have FASTFPE?
FASTFPE		:=arch/arm/fastfpe
ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
FASTFPE_OBJ	:=$(FASTFPE)/
endif

# If we have a machine-specific directory, then include it in the build.
core-y				+= arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
core-y				+= $(MACHINE)
core-$(CONFIG_ARCH_S3C2410)	+= arch/arm/mach-s3c2400/
core-$(CONFIG_ARCH_S3C2410)	+= arch/arm/mach-s3c2412/
core-$(CONFIG_ARCH_S3C2410)	+= arch/arm/mach-s3c2440/
core-$(CONFIG_ARCH_S3C2410)	+= arch/arm/mach-s3c2442/
core-$(CONFIG_ARCH_S3C2410)	+= arch/arm/mach-s3c2443/
core-$(CONFIG_FPE_NWFPE)	+= arch/arm/nwfpe/
core-$(CONFIG_FPE_FASTFPE)	+= $(FASTFPE_OBJ)
core-$(CONFIG_VFP)		+= arch/arm/vfp/

# If we have a common platform directory, then include it in the build.
core-$(CONFIG_PLAT_IOP)		+= arch/arm/plat-iop/
core-$(CONFIG_ARCH_OMAP)	+= arch/arm/plat-omap/
core-$(CONFIG_PLAT_S3C24XX)		+= arch/arm/plat-s3c24xx/
core-$(CONFIG_ARCH_MXC)		+= arch/arm/plat-mxc/

drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
drivers-$(CONFIG_ARCH_CLPS7500)	+= drivers/acorn/char/
drivers-$(CONFIG_ARCH_L7200)	+= drivers/acorn/char/

libs-y				:= arch/arm/lib/ $(libs-y)

# Default target when executing plain make
ifeq ($(CONFIG_XIP_KERNEL),y)
KBUILD_IMAGE := xipImage
else
KBUILD_IMAGE := zImage
endif

all:	$(KBUILD_IMAGE)

boot := arch/arm/boot

#	Update machine arch and proc symlinks if something which affects
#	them changed.  We use .arch to indicate when they were updated
#	last, otherwise make uses the target directory mtime.

include/asm-arm/.arch: $(wildcard include/config/arch/*.h) include/config/auto.conf
	@echo '  SYMLINK include/asm-arm/arch -> include/asm-arm/$(INCDIR)'
ifneq ($(KBUILD_SRC),)
	$(Q)mkdir -p include/asm-arm
	$(Q)ln -fsn $(srctree)/include/asm-arm/$(INCDIR) include/asm-arm/arch
else
	$(Q)ln -fsn $(INCDIR) include/asm-arm/arch
endif
	@touch $@

archprepare: maketools

PHONY += maketools FORCE
maketools: include/linux/version.h include/asm-arm/.arch FORCE
	$(Q)$(MAKE) $(build)=arch/arm/tools include/asm-arm/mach-types.h

# Convert bzImage to zImage
bzImage: zImage

zImage Image xipImage bootpImage uImage: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@

zinstall install: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@

CLEAN_FILES += include/asm-arm/mach-types.h \
	       include/asm-arm/arch include/asm-arm/.arch

# We use MRPROPER_FILES and CLEAN_FILES now
archclean:
	$(Q)$(MAKE) $(clean)=$(boot)

# My testing targets (bypasses dependencies)
bp:;	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
i zi:;	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@


define archhelp
  echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
  echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
  echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
  echo  '  uImage        - U-Boot wrapped zImage'
  echo  '  bootpImage    - Combined zImage and initial RAM disk' 
  echo  '                  (supply initrd image via make variable INITRD=<path>)'
  echo  '  install       - Install uncompressed kernel'
  echo  '  zinstall      - Install compressed kernel'
  echo  '                  Install using (your) ~/bin/installkernel or'
  echo  '                  (distribution) /sbin/installkernel or'
  echo  '                  install to $$(INSTALL_PATH) and run lilo'
endef

Re: Incompatible CFLAGS for kernel module

[Sam Ravnborg]

On Sat, Jul 05, 2008 at 10:33:28AM +0500, Shaz wrote:
> On Sat, Jul 5, 2008 at 1:32 AM, Sam Ravnborg <sam@ravnborg.org> wrote:
> > On Fri, Jul 04, 2008 at 10:34:56PM +0500, Shaz wrote:
> >> Hi,
> >>
> >> I am porting tpm emulator to versatilepb, which is an arm platform. I
> >> have some problem with CFLAGS from /arch/arm/Makefile when building
> >> the kernel module for this software. I cannot figure out what to do in
> >> this case. Following is the error:
> >>
> >> [root@develbox tpm_emulator-0.5]# make
> >> Making all in tpmd
> >> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd'
> >> make[1]: Nothing to be done for `all'.
> >> make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd'
> >> Making all in tpmd_dev
> >> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd_dev'
> >>   CC [M]  /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o
> >> cc1: error: unrecognized command line option "-mlittle-endian"
> >> cc1: error: unrecognized command line option "-mapcs"
> >> cc1: error: unrecognized command line option "-mno-sched-prolog"
> >> cc1: error: unrecognized command line option "-mabi=aapcs-linux"
> >> cc1: error: unrecognized command line option "-mno-thumb-interwork"
> >> /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
> >> (armv4t) for -march= switch
> >> /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
> >> (arm9tdmi) for -mtune= switch
> >> make[3]: *** [/embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o] Error 1
> >> make[2]: *** [_module_/embedded/tpm_emulator-0.5/tpmd_dev] Error 2
> >> make[1]: *** [all] Error 2
> >> make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd_dev'
> >> make: *** [all-recursive] Error 255
> >>
> >> kindly help me understand the core issue here and point out some solutions.
> >
> > A quick guess is that you use your host gcc and not your target gcc.
> > You most likely have to set CROSS_COMPILE=...
> >
> > Try with "make V=1" to see the exact gcc command line.
> >
> > If you continue to rn into trouble please post your Makefile.
> I tried make V=1 but the loads of info was given for the things that
> went right but nothing noticeable where the error is.
What is interesting is the gcc commandline for a good case and
a bad case. If they do not look the same we are on the right track.

> I've attached my arch/arm/Makefile. My build, host and target are on
> same system. i am emulating the board with Qemu. The process is very
> conventional. I've mounted my rootfs with -o loop and kernel and extra
> modules go there with INSTALL_MOD_PATH and INSTALL_MOD_DIR. ARCH=arm
> and CROSS_COMPILE=arm-linux-

But you do some kind of "external module" build judging from the output
above. So the Makefile of interest is the one(s) that is special for
your module. At lest the one you have in /embedded/tpm_emulator-0.5/tpmd_dev

	Sam

Re: Incompatible CFLAGS for kernel module

[Shaz]

On Sun, Jul 6, 2008 at 10:34 AM, Shaz <shazalive@gmail.com> wrote:
> On Sat, Jul 5, 2008 at 11:33 AM, Sam Ravnborg <sam@ravnborg.org> wrote:
>> On Sat, Jul 05, 2008 at 10:33:28AM +0500, Shaz wrote:
>>> On Sat, Jul 5, 2008 at 1:32 AM, Sam Ravnborg <sam@ravnborg.org> wrote:
>>> > On Fri, Jul 04, 2008 at 10:34:56PM +0500, Shaz wrote:
>>> >> Hi,
>>> >>
>>> >> I am porting tpm emulator to versatilepb, which is an arm platform. I
>>> >> have some problem with CFLAGS from /arch/arm/Makefile when building
>>> >> the kernel module for this software. I cannot figure out what to do in
>>> >> this case. Following is the error:
>>> >>
>>> >> [root@develbox tpm_emulator-0.5]# make
>>> >> Making all in tpmd
>>> >> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd'
>>> >> make[1]: Nothing to be done for `all'.
>>> >> make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd'
>>> >> Making all in tpmd_dev
>>> >> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd_dev'
>>> >>   CC [M]  /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o
>>> >> cc1: error: unrecognized command line option "-mlittle-endian"
>>> >> cc1: error: unrecognized command line option "-mapcs"
>>> >> cc1: error: unrecognized command line option "-mno-sched-prolog"
>>> >> cc1: error: unrecognized command line option "-mabi=aapcs-linux"
>>> >> cc1: error: unrecognized command line option "-mno-thumb-interwork"
>>> >> /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
>>> >> (armv4t) for -march= switch
>>> >> /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.c:1: error: bad value
>>> >> (arm9tdmi) for -mtune= switch
>>> >> make[3]: *** [/embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o] Error 1
>>> >> make[2]: *** [_module_/embedded/tpm_emulator-0.5/tpmd_dev] Error 2
>>> >> make[1]: *** [all] Error 2
>>> >> make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd_dev'
>>> >> make: *** [all-recursive] Error 255
>>> >>
>>> >> kindly help me understand the core issue here and point out some solutions.
>>> >
>>> > A quick guess is that you use your host gcc and not your target gcc.
>>> > You most likely have to set CROSS_COMPILE=...
>>> >
>>> > Try with "make V=1" to see the exact gcc command line.
>>> >
>>> > If you continue to rn into trouble please post your Makefile.
>>> I tried make V=1 but the loads of info was given for the things that
>>> went right but nothing noticeable where the error is.
>> What is interesting is the gcc commandline for a good case and
>> a bad case. If they do not look the same we are on the right track.
I've noticed some issues in my rootfs and on to it but plz do look at
the Makefile. i might be missing something there instead.
>>
>>> I've attached my arch/arm/Makefile. My build, host and target are on
>>> same system. i am emulating the board with Qemu. The process is very
>>> conventional. I've mounted my rootfs with -o loop and kernel and extra
>>> modules go there with INSTALL_MOD_PATH and INSTALL_MOD_DIR. ARCH=arm
>>> and CROSS_COMPILE=arm-linux-
>>
>> But you do some kind of "external module" build judging from the output
>> above. So the Makefile of interest is the one(s) that is special for
>> your module. At lest the one you have in /embedded/tpm_emulator-0.5/tpmd_dev
> Yes am building tpm emulator. Its nature is generic but successfully
> runs on PC and might have some porting issues which I am figuring out.
> Thanx for sufficient attention. I am attaching the emulator's source
> archive which I've altered. The main change that I've done is add
> PREFIXDIR in all Makefiles. It includes the required Makefile in
> tpmd_dev. I am separately also attaching the required makefile so to
> make it easier.
>>
>>        Sam
>>
>
>
>
> --
> Shaz
>



-- 
Shaz

Re: Incompatible CFLAGS for kernel module

[Sam Ravnborg]

> >>> >> this case. Following is the error:
> >>> >>
> >>> >> [root@develbox tpm_emulator-0.5]# make
> >>> >> Making all in tpmd
> >>> >> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd'
> >>> >> make[1]: Nothing to be done for `all'.
> >>> >> make[1]: Leaving directory `/embedded/tpm_emulator-0.5/tpmd'
> >>> >> Making all in tpmd_dev
> >>> >> make[1]: Entering directory `/embedded/tpm_emulator-0.5/tpmd_dev'
> >>> >>   CC [M]  /embedded/tpm_emulator-0.5/tpmd_dev/tpmd_dev.o
> >>> >> cc1: error: unrecognized command line option "-mlittle-endian"
> >>> >> cc1: error: unrecognized command line option "-mapcs"
> >>> >> cc1: error: unrecognized command line option "-mno-sched-prolog"
> >>> >> cc1: error: unrecognized command line option "-mabi=aapcs-linux"
> >>> >> cc1: error: unrecognized command line option "-mno-thumb-interwork"

This all looks like you are using the wrong gcc.
And the "make V=1" option should tell you that.

> I've noticed some issues in my rootfs and on to it but plz do look at
> the Makefile. i might be missing something there instead.

The Makefile looks ok.

	Sam