Re: [MiNT] gcc-4.2.2-mint-20080127

[Alan Hourihane <alanh@fairlite.demon.co.uk>]

On Sun, 2008-01-27 at 20:16 +0000, Alan Hourihane wrote:
> On Sun, 2008-01-27 at 16:14 +0100, Vincent Rivière wrote:
> > Hello.
> > 
> > I have just updated my patches for the binutils and GCC.
> > They are available as usual:
> > http://vincent.riviere.free.fr/soft/m68k-atari-mint/
> > 
> > Now all the tools displays the patch version when they are invoked with 
> > --version. Keith, this would have helped you for finding your C++ problem !
> > 
> > I have removed the implicit usage of -fomit-frame-pointer when -O is 
> > used. The GCC bug is still present, but it does not appear as long as 
> > -O, -m68020 and -fomit-frame-pointer are not used together. So now Quake 
> > works when compiled with -O3 and -m68060 ! I tried to enable the video 
> > again, and that's incredible, it works perfectly on ARAnyM with FreeMiNT 
> > ! It is very fast, probably about 25 fps, with the software renderer 
> > (OpenGL is not used). I didn't enable the keyboard, so we can only look 
> > at the demo. Maybe MiKRO will release a playable version compatible with 
> > ARAnyM ?
> > 
> > Finally, I added the patches provided by MiKRO for compiling GCC 4.2.2 
> > natively with GCC 2.95.3. I didn't include the patch for libstdc++-v3 
> > about strtof() and strtold(), because it works well with the 
> > cross-compiler, and I wasn't able to reproduce the problem natively 
> > because of big memory problems. Of course, I will include it if it is 
> > really necessary.
> > 
> > I also included the patch provided by Olivier for the makeinfo problem. 
> > He has compiled the binutils on Fedora Core 8, where makeinfo 4.11 was 
> > not considered >= 4.4.
> > 
> > So far, what are the remaining problems with GCC 4.2.2 ?
> > 
> > Keith, you said recently that the "thunk" problem was still here. Could 
> > you tell me how to reproduce it ?
> > 
> > Alan, you reported having a lot of problems with the FreeMiNT kernel 
> > (however it used to work fine), are they really related with my latest 
> > patches ?
> 
> I'm just rebuilding everything from scratch and bumped into this now
> compiling MiNTlib.....
> 
> m68k-atari-mint-gcc -Wall -g -pg -pipe -O2 -nostdinc -I../mintlib -I..
> -I../include -I../mintlib -I../stdlib -I$(<../includepath)
> -DHAVE_CONFIG_H -D_LIBC -D_REENTRANT -c ../mintlib/linea.c -o linea.o
> ../mintlib/linea.c: In function 'lineac':
> ../mintlib/linea.c:176: error: %a6 cannot be used in asm here
> 
> This is because -fomit-frame-pointer is not being used, I guess before,
> it was implicit.

Oh, and because we're building the profile version (-pg) we can't add
-fomit-frame-pointer because we get this....

m68k-atari-mint-gcc: -pg and -fomit-frame-pointer are incompatible

Alan.