Hi Jun,
Jun Sun wrote:
On Mon, Jul 28, 2008 at 03:54:39PM -0700, Jun Sun wrote:
On Sat, Jul 19, 2008 at 12:13:23PM +1000, Greg Ungerer wrote:
Hi Jun,
Jun Sun wrote:
On Sun, Jul 13, 2008 at 10:02:08PM +1000, Greg Ungerer wrote:
Jun Sun wrote:
This might be a dumb question, but have we considered moving to gcc4.x
for uclinux? Any pro's and con's? What would be the effort to do so?
I have been using a gcc-4.2.4 based toolchain for ColdFire work
for a few weeks now. I haven't had any problems with it so far.
I have been using a gcc-4.2.1 toolchain for uClinux ARM for
about a year now, no problems there either.
Thanks, Greg.
Did you use any pre-built toolchain or toolchain source package? Or
did you just build from GNU source?
I build my own from gnu source. You can download my arm-linux 4.2.1
toolchain from:
http://ftp.snapgear.org/pub/snapgear/tools/arm-linux/arm-linux-tools-20070808.tar.gz
The instructions I used to build it are at:
http://ftp.snapgear.org/pub/snapgear/tools/arm-linux/build-arm-linux-4.2.1
<snip>
Hi, Greg,
I tried to follow your instructions and re-create the toolchain on FC3.
Things are mostly working now, but it appears I have some problems with
elf2flt and flthdr programs.
I googled for elf2flt-20060707.tar.gz package and found it under
http://fpt.snapgear.org/pub/snapgear/tools/arm-linux/elf2flt-20060707.tar.gz
However, when I do ./configure, it complains about missing "config.sub".
I copied over a config.sub from a generic uclinux program and managed to
build and install the two programs.
Later, when I tried to re-build a uclinux target with the new tool chains,
I had the following error:
---------------
ucfront-gcc arm-linux-gcc -Wl,-elf2flt -msoft-float -D__PIC__ -fpic -msingle-pic-base -Wl,-elf2flt -msoft-float -D__PIC__ -fpic -msingle-pic-base -o boa alias.o auth.o boa.o cgi.o cgi_header.o config.o get.o hash.o globals.o log.o nls.o pipe.o queue.o read.o request.o response.o signals.o timestamp.o util.o -lcrypt
/usr/local/lib/gcc/arm-linux/4.2.1/../../../../arm-linux/bin/ld: line 177: 1011 Segmentation fault $ELF2FLT $FLTFLAGS -o "$OFILE" -p "$OFILE.gdb" "$RFILE"
collect2: ld returned 139 exit status
make[4]: *** [boa] Error 1
make[4]: Leaving directory
`/home/jsun/build/uClinux-dist-test-build/user/boa/src'
make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/jsun/build/uClinux-dist-test-build/user/boa'
make[2]: *** [boa] Error 2
make[2]: Leaving directory `/home/jsun/build/uClinux-dist-test-build/user'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/jsun/build/uClinux-dist-test-build/user'
make: *** [subdirs] Error 1
---------------
When I copied over these two executables from your binary distro, then
the build went well, which seems to indicate my elf2flt and flthdr
are not built correctly.
Here is the configure command I used for configuring elf2flt:
---------------
./configure --target=arm-linux \
--with-libbdf=/home/jsun/build/greg-tools/binutils-2.17/arm-linux/bfd/libbfd.a \
--with-libiberty=/home/jsun/build/greg-tools/binutils-2.17/arm-linux/libiberty/libiberty.a
\
--with-bfd-include-dir=/home/jsun/build/greg-tools/binutils-2.17/arm-linux/bfd
---------------
Do you have any ideas what went wrong?
Thanks in advance.
Cheers.
Jun
OK, I found out the problem. In the last configure command there is
a typo. "--with-libbdf" should be "--with-libfd". (Greg, that is
your typo in the build instructions. :0)
Oops, sorry. Good catch.
I edited that file in the snapgear.org archive, so that is
corrected now.
Your right about the config.sub missing as well. To address that
I repackaged the elf2flt-20060707 package to include config.sub,
and labelled it elf2flt-20060708. That is on the web site for
download as well now.
For the benefits of others who might want to duplicate Greg's
instructions, here are the additional notes from my experience.
* I doowloaded uClinux-dist-test-20080711.tar.bz2, which also gives
linux 2.6 kernel keaders needed in the process
* Configure the kernel and set up the header files like Greg said earlier
in this thread.
I have recently been testing a gcc-4.2.4 based toolchain, and I
have improved the build instructions to include the linux kernel
configuration step as well.
* Remove "__deprecated" in linux-2.6.x/include/asm-arm/memory.h as somehow
it is not liked.
* When building elf2flt, configure will complain about missing
"config.sub". Just copy one config.sub from any of the programs
under uClinux-dist. And make sure you correct the "--with-libbdf" typo.
That is it. Pretty simple. Oh, I duplicated this on FC3. I had quite some
troubles on FC9.
Thanks for the update.
Regards
Greg
------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: [EMAIL PROTECTED]
Secure Computing Corporation PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
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