Re: IA64 cross compiler problem

[Co Ngai Fung <erico at alumni dot cuhk dot net>]

Thanks for your detailed explaination. Actually I am trying
to build a cross compiler to linux. and I follow the instructions 
from http://kegel.com/crosstool/, and i can successfully 
build the compiler for gcc3.2.3+glibc2.2.5.
Thank you very much!

-fung

On Wed, 18 Jun 2003, Jim Wilson wrote:

> Co Ngai Fung wrote:
> > # /usr/crossgcc/ia64/bin/ia64-elf-gcc a.c
> > <command line>:1:13: warning: "machine" re-asserted
> > /usr/crossgcc/ia64/bin/../lib/gcc-lib/ia64-elf/3.2.3/../../../../ia64-elf/bin/ld: cannot open crt0.o: No such file or directory
> > collect2: ld returned 1 exit status
> 
> I see you configured for ia64-elf.  This is a non-working target.  It 
> was used for development in the early days before IA-64 hardware was 
> available, and was mostly abandoned after that.  If you really want a 
> cross compiler for an embedded IA-64 target, then you will have to do 
> some porting work.  If you wanted a cross compiler to ia64-linux, then 
> use that to configure instead of ia64-elf.
> 
> You have no C library for the target, so you won't be able to compile 
> any application programs.  This is because the instructions you used are 
> for a compiler with no C library.  This would be useful for building OS 
> kernels, but not useful for much else.
> 
> If you are trying to build a cross compiler to an embedded target, then 
> you can use newlib for the C library.  This can easily be built in 
> parallel with gcc.  We have some instructions at
> 	http://gcc.gnu.org/simtest-howto.html
> 
> If you are trying to build a cross compiler to linux, and if you have 
> access to the target, you can copy /usr/lib and /usr/include to the 
> host, and then configure using --with-headers= and --with-libs= pointing 
> at the target headers and libraries respectively.  This is the old way 
> to do this.  The new way is to use --with-sysroot.  See the documentation.
> 
> If you don't have access to the target, then you have to build gcc and 
> glibc in parallel.  This is complicated, and currently undocumented. 
> Some good info can be found at
> 	http://kegel.com/crosstool/
> See the crosstools.sh script.
> 
> Jim
> 

-- 
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Co Ngai Fung
http://pig.myftp.org:8000
erico@alumni.cuhk.net
fafb0daa2487d3bc52356a535b10858c
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