Re: Building mips*-linux-gnu using --with-newlib

[Daniel Jacobowitz <drow at mvista dot com>]

On Sun, Oct 19, 2003 at 08:15:22PM +0100, Richard Sandiford wrote:
> Dunno how standard this is, but I tend to build a mips*-linux-gnu
> sysroot as follows:
> 
>    - build a bare-bones gcc, configured using:
>         --with-newlib --disable-shared --disable-threads
>         --enable-languages=c
>    - use it to build & install glibc
>    - build a full compiler, no special configure options
>    - use it to build the rest of the sysroot
> 
> The point of --with-newlib is to stop libgcc including any system
> header files since they aren't available until glibc is installed.
> 
> Anyway, this no longer works with the new definition of
> MD_FALLBACK_FRAME_STATE_FOR.  libgcc will unconditionally
> include <signal.h>.
> 
> Is it OK to apply the patch below to get around this?  It seems safe,
> but I notice most other ports don't do this.

Richard's said in the past, IIRC, that this isn't the right way to do
it.  Use glibc's make install-headers instead.  Of course, make
install-headers has lots of its own deficiencies.

Also, as Chris pointed out, you may or may not (depending on exact
glibc version and phase of moon) get a copy of the unwind routines
which don't support MD_FALLBACK_FRAME_STATE_FOR linked into the built
library.  That's bad :)

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer