Re: building gcc-3.2.3 as a cross compiler to make cygwin programs

[Daniel Kegel <dank at kegel dot com>]

Some developers will tell you that copying crt0.o etc. from the
target system is in fact the proper approach.  While this is
the only possible approach when the target is closed-source,
open source targets can be handled by actually
building the crt0.o yourself.  This works well for relatively stable
targets like Linux and glibc, but might work poorly for
targets under rapid development like cygwin.

Anyway, copying the .o's is the way to go unless you're
willing to add cygwin target support to crosstool :-)
- Dan

bertrand marquis wrote:
> try to copie crt0.o and gcrt0.o from cygwin in i686-pc-cygwin/lib and it 
> will work (it is for me)
>
> But i'm really not sure that it is the right way to do that,
>
> Any one know where does crt0.o and gcrt0.o must come from when building 
> a cross compiler ??
>
>
> Rainer Hochreiter a écrit:
>
> > > it seems that you have forgotten to add the include and lib files from
> > > cygwin
> > >
> > > you must take the file needed in the cygwin installed files or find a
> > > developpement tree that add those files, here stdio.h and put them into
> > > $PREFIX/i686-pc-cygwin/include and $PREFIX/i686-pc-cygwin/lib
> > >   
> >
> >
> > thanks for your hint - it works!
> >
> > i also successfully built a cross-gcc for c++!
> >
> > the next problem which occured is that during linking i get the following
> > error message:
> >
> > [raho@pcraho cygwin]$ /opt/cygwin-cross-gcc/bin/i686-pc-cygwin-g++ 
> > hello.cpp
> > /opt/cygwin-cross-gcc/lib/gcc-lib/i686-pc-cygwin/3.2.3/../../../../i686-pc-cygwin/bin/ld: 
> >
> > crt0.o: No such file: No such file or directory
> > collect2: ld returned 1 exit status
> >
> > this happens also on linking c sources:
> >
> > [raho@pcraho cygwin]$ /opt/cygwin-cross-gcc/bin/i686-pc-cygwin-gcc 
> > hello.c
> > /opt/cygwin-cross-gcc/lib/gcc-lib/i686-pc-cygwin/3.2.3/../../../../i686-pc-cygwin/bin/ld: 
> >
> > crt0.o: No such file: No such file or directory
> > collect2: ld returned 1 exit status
> >
> > any hints to this problem?


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