Bug 6229 – Xfree fails to build with gcc 3.2 and -mmx and -3dnow

• Status: RESOLVED INVALID
• Product: Gentoo Linux

[Description Alex Veber 2002-08-08 19:18:54 UTC]

If I try to build Xfree with gcc 3.2 and -march=athlon-tbird
Xfree breaks with the following error:
miPck1Prim.c: In function `CheckFAreaPick1': 
miPck1Prim.c:405: unable to find a register to spill in class `FLOAT_REGS' 
miPck1Prim.c:405: this is the insn: 
(insn 299 297 302 (set (subreg:SF (reg/v:DI 29 rmm0 [64]) 0) 
        (float:SF (reg:HI 5 di [157]))) 167 {floathisf2} (nil) 
    (nil)) 
miPck1Prim.c:405: confused by earlier errors, bailing out 
make[5]: *** [miPck1Prim.o] Error 1 
make[5]: Leaving directory `/var/tmp/portage/xfree-4.2.0-
r12/work/xc/programs/Xserver/PEX5/ddpex/mi/level1' 
make[4]: *** [ddpex/mi/level1] Error 2 
make[4]: Leaving directory `/var/tmp/portage/xfree-4.2.0-
r12/work/xc/programs/Xserver/PEX5' 
make[3]: *** [PEX5] Error 2 
make[3]: *** [PEX5] Error 2 
make[3]: Leaving directory `/var/tmp/portage/xfree-4.2.0-
r12/work/xc/programs/Xserver' 
make[2]: *** [install] Error 2 
make[2]: Leaving directory `/var/tmp/portage/xfree-4.2.0-r12/work/xc/programs' 
make[1]: *** [install] Error 2 
make[1]: Leaving directory `/var/tmp/portage/xfree-4.2.0-r12/work/xc' 
make: *** [install] Error 2 

!!! ERROR: The ebuild did not complete successfully. 
!!! Function src_install, Line 9, Exitcode 2 
!!! (no error message) 

!!! emerge aborting on  /usr/portage/x11-base/xfree/xfree-4.2.0-r12.ebuild

But is I add -mno-mmx and -mno-3dnow to my C[XX]FLAGS the ebuid works.
The ebuils needs to be modified to remove mmx and 3dnow from the compile 
option if gcc 3.2 is used to compile it.
also it seems thet this problem only happens with -march=athlon-tbird, -
march=athlon-xp seems to work with mmx and 3dnow acording to this thread from 
the forum: 
http://forums.gentoo.org/viewtopic.php?t=10998

[Comment 1 aubin 2002-08-08 19:31:25 UTC]

this is not athlon specific. i have run into this on a celeron system with gcc 
3.1.1 and the -mmmx flag enabled.  

[Comment 2 Martin Schlemmer (RETIRED) 2002-08-11 16:51:20 UTC]

Same with -march=pentium4.  I think this should rather be fixed gcc side.
Please submit a bugreport to them.

[Comment 3 Alex Veber 2002-08-11 18:06:12 UTC]

Before I submit the bug to the gcc guys can anyone test if -m3dnow aso breaks 
Xfree or is it -mmmx only.

[Comment 4 Martin Schlemmer (RETIRED) 2002-08-11 18:45:37 UTC]

Testing "-march=pentium4 -mno-mmx" here now.

Have a look at:

http://gcc.gnu.org/cgi-bin/gnatsweb.pl

At bug #7423, which is one I added for gcc-3.2_pre and -march=pentium4.
Not very informative I know :P

[Comment 5 Martin Schlemmer (RETIRED) 2002-09-08 03:38:15 UTC]

Filter the flags in ebuild, but this is really a gcc issue.