L4Linux on Xscale

[Wan-Keun Jo]

Hi, 

I tried to install Fiasco-L4Linux on Xscale-PXA255. 
I saw a "hello message" with fiasco kernel, sigma0, roottask, hello programs yesterday.

When I start to compile L4linux, I got the following errors...

==================================================================
/l4linux-2.6$ make

CHK     include/linux/version.h
CC      arch/l4/kernel/asm-offsets.s
cc1: error: invalid option `abi=apcs-gnu'                                 (1)
cc1: error: bad value (armv4) for -march= switch                      (2)
cc1: error: bad value (armv4) for -mcpu= switch
make[1]: *** [arch/l4/kernel/asm-offsets.s] Error 1
make: *** [prepare0] Error 2
==================================================================

>> Question 01:

Error (1): I solved by fixing the following code

arch/l4/Makefile:77:
CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-
interwork,)

[change to]

CFLAGS += $(call cc-option,-mapcs-32,$(call cc-option,-mabi=apcs-gnu),) $(call cc-option,
-mno-thumb-interwork,)

Error (1) is solved, but what is the difference between them?? (I just fix it, I don't know why...)

>> Question 02:
Error (2): I read what "-march" option is on gcc manual, and found the permissible values for it are

armv2, armv2a, armv3, armv3m, armv4, armv4t, armv5, armv5t, armv5te, armv6, armv6j, iwmmxt, ep9312

In the file "arch/l4/Makefile:82 CFLAGS += -D__LINUX_ARM_ARCH__=4 -march=armv4"
I just tried each values one by one for -march option, but all failed.

How can I fix it and compile well???

Thank you!!
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