Hi Igor,
This is a bug in the ucfront utility - I have just submitted a patch to
this list. It should be in your inbox now if you are subscribed.
Your workaround is only partially correct, you should have completely
removed the --fatal-warnings stuff from common/config.arch. Chaging it
to just one - has had some effect, but not the effect you wanted!
Regards,
John
[EMAIL PROTECTED] wrote:
Hi all,
I am new to the uClinux Project and want to run it on a microblaze
(Xilinx XUPV2P). So far I was not able to create my own uClinux image,
so I am using the image of the reference-design:
http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux/Downloads/platforms.html#xupv2p
and build from it together with the .bit-file the ace-file, so i am
able to boot uClinux from flash.
Concerning the Problem:
I'am using the latest version of the mb-gcc toolchain:
http://www.petalogix.com/resources/downloads/mb-gcc
Building a simple hello world program using the following Makefile:
ifndef ROOTDIR
ROOTDIR=../uClinux-dist
endif
UCLINUX_BUILD_USER = 1
include $(ROOTDIR)/.config
LINUXDIR = linux-2.4.x
LINUX_CONFIG = $(ROOTDIR)/$(LINUXDIR)/.config
include $(LINUX_CONFIG)
LIBCDIR = $(CONFIG_LIBCDIR)
include $(ROOTDIR)/config.arch
PATH:=$(PATH):$(ROOTDIR)/tools
HELLO = hello
HELLO_OBJS = hello.o
all: $(HELLO)
$(HELLO): $(HELLO_OBJS)
$(CC) $(LDFLAGS) -o $@ $(HELLO_OBJS) $(LDLIBS)
clean:
-rm -f $(HELLO) *.elf *.gdb *.o
%.o: %.c
$(CC) -c $(CFLAGS) -o $@ $<
gives back a linker-error:
ucfront-gcc mb-gcc -c -Os -g -fomit-frame-pointer -pipe -fno-common
-fno-builtin -Wall -msoft-float -mno-xl-soft-mul -mxl-barrel-shift
-mno-xl-soft-div -DEMBED -Dlinux -D__linux__ -Dunix -D__uClinux__ -o hello.o
hello.c
hello.c:6:2: warning: no newline at end of file
ucfront-gcc mb-gcc -Wl,--fatal-warnings -Wl,-elf2flt -o hello hello.o
/usr/local/microblaze-elf-tools/bin/../lib/gcc/microblaze/3.4.1/../../../../microblaze/bin/ld.real:
unrecognized option `--fatal-warnings'
/usr/local/microblaze-elf-tools/bin/../lib/gcc/microblaze/3.4.1/../../../../microblaze/bin/ld.real:
use the --help option for usage information
collect2: ld returned 1 exit status
make: *** [hello] Error 1
So I edit the following file:
../uClinux-dist/vendors/config/common/config.arch
and removed one dash: --fatal-warings -> -fatal-warnings
ifeq "$(shell $(LD) --fatal-warnings 2>&1 | grep 'unrecogni.ed option')" ""
# Linker warnings are almost always a sign of badness
LDFLAGS += --Wl,--fatal-warnings
endif
After editing this file I was able to build the hello world program
without errors or warnings.
Next I copied the executable to CF-Memory, boot uClinux and run the executable:
./hello
kernel BUG at sched.c:562!
What went wrong? Thanks for your hints or suggestions!!
Regards,
Igor Sachs
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