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RE: help about cross-compiler


Hey there

>   The following is the command that I type :
>   [prompt$]
> ./configure --target=m68k-hp-bsd4.3 --prefix=/home/yliu/local
--with-gnu-as
>    --with-gnu-ld
>   [prompt$]  make all install
>
>  The error is :
>
>checking whether the C compiler
>(/home/yliu/program/forchen/gcc-3.0/gcc/xgcc
-B/home/yliu/program/forchen/gc
>c-3.0/gcc/ -B/home/yliu/local/m68k-hp-bsd4.3/bin/
-B/home/yliu/local/m68k-hp
>-bsd4.3/lib/ -isystem /home/yliu/local/m68k-hp-bsd4.3/include -g -O2 )
>works... no
>configure: error: installation or configuration problem: C compiler cannot
>create executables.
>make: *** [configure-target-libiberty] Error 1

It is good that you add "--with-gnu-as --with-gnu-ld", but this time you
forgot the 
"--without-headers --with-newlib --enable-languages=c" this time.

If you don't, then gcc will think you already have libraries and headers.
And those libraries can only be made by a cross-compiler.
(chicken and egg problem :)

That's why you make a so-called core-gcc that only compiles c code.
And with that core-gcc, you make the libraries of newlib.
After you made the libraries, you can procede with making a full
cross-compiler with support for c and c++.

So, to sum it all up:
- start in a DIFFERENT directory than your gcc-3.0 directory (for example
"core-gcc" which is empty at first)
- make sure everything you need is in your $PATH (m68k-coff-as,
m68k-coff-ld, m68k-coff-ar)
- use the following command from that different directory:
../gcc-3.0/configure --target=m68k-coff --prefix=/home/yliu/local
--enable-languages=c --with-local-prefix=/home/yliu/local/m68k-coff
--without-headers --with-newlib --disable-shared --with-gnu-as --with-gnu-ld
- Then do the following command:
./make all-gcc install-gcc


Let us know.
Jan



>
> At http://crossgcc.billgatliff.com/ you can find a script that does all
> those things for you...
> I really suggest you try it, as it will help you a lot.
>
> Good luck,
> I hope you get it working now :)
> Jan
>
>
> >Then gcc:
> >cd /my-gcc
> >/my-gcc/vi configure(change the target(m68k-hp-bsd4.3 and prefix director
> >(I am not administor) )
> >/my-gcc/ ./configure
> >/my-gcc/make
>
> -----Original Message-----
> From: Vermeulen Jan <Jan.Vermeulen@siemens.atea.be>
> To: 'Liu Yong' <yliu@newavetech.com>, 'CrossGCC'
> <crossgcc@sources.redhat.com>
> Date: Fri, 6 Jul 2001 14:00:43 +0200
> Subject: RE: help about cross-compiler
>
> > Hello ,
> >
> > Can you give me your commandlines please?
> > & What versions you use (binutils, gcc, linux-dist, ..)
> >
> > e.g. for binutils:
> > [/home/jan/source/binbuild/ $] ../binutils-2.10.1/configure
> > --target=m68k-hp-bsd4.3 --host=sun-solaris-2.6
> >
> > and commands used pre- & post-building your targets.
> > (like creating symlinks, renaming folders somewhere in the source-tree,
> > etc)
> >
> > Best regards,
> > Jan
> >
> >
> > -----Original Message-----
> > From: Liu Yong [mailto:yliu@newavetech.com]
> > Sent: vrijdag 6 juli 2001 8:34
> > To: Vermeulen Jan
> > Subject: RE: help about cross-compiler
> >
> >
> >
> > Thanks for your help.
> > But I have changed my .cshrc and added it before I build gcc.
> > I don't know what's wrong .
> > Maybe I should install glibc? I haven't installed it.
> >
> > Any suggestion is welcomed.
> >
> > Best Regards.
> > Liu Yong
> >
> > -----Original Message-----
> > From: Vermeulen Jan <Jan.Vermeulen@siemens.atea.be>
> > To: 'Liu Yong' <yliu@newavetech.com>, crossgcc@sources.redhat.com
> > Date: Fri, 6 Jul 2001 07:58:11 +0200
> > Subject: RE: help about cross-compiler
> >
> > > >I want to build the cross-compiler (host : sun-solaris-2.6   target
> > :
> > > m68k-hp-bsd4.3).
> > > >I have installed the binutils ,but failed building Gcc ,
> > > >I tried sereral times .
> > > >Please help me to find the reason or tell me how to do .
> > > >Thank you very much!
> > >
> > > <lots of errors>
> > >
> > > >/var/tmp/ccLd3ZbM.s:75: Error: Unknown opcode: `moveml'
> > >
> > > I am not certain this will help, but make sure that your
> > > m68k-hp-bsd4.3-*
> > > files are in the path.
> > > Set your path to
> > > PATH=$PATH:/<where you installed the binutils>
> > >
> > > Then try again.
> > >
> > > Greets,
> > > Jan
> > >
> > > ------
> > > Want more information?  See the CrossGCC FAQ,
> > > http://www.objsw.com/CrossGCC/
> > > Want to unsubscribe? Send a note to
> > > crossgcc-unsubscribe@sourceware.cygnus.com
> > >
> >
>
>


------
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