Bugzilla Bug 28332

I emerged Enigma yesterday. It worked fine. Later that day i emerged
development-sources 2.6.0 beta 5 and ran emerge -uUD world using
ACCEPT_KEYWORDS="~x86". I think a part of SDL was updated. This morning i wanted
to start Enigma. The only respond was illegal instruction. Re-emerging crashed.
Downgrading libsdl to 1.2.5-r2 had no effect. It won't compile any more.

Reproducible: Always
Steps to Reproduce:
1. use an up to date gentoo linux using keyword ~x86
2. emerge enigma




bash-2.05b$ emerge info
Portage 2.0.49-r3 (default-x86-1.4, gcc-3.3.1, glibc-2.3.2-r1, 2.6.0-test5)
=================================================================
System uname: 2.6.0-test5 i686 Intel(R) Pentium(R) 4 CPU 2.50GHz
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CFLAGS="-march=pentium4 -O3 -funroll-loops -pipe -fomit-frame-pointer -ffast-math"
CHOST="i686-pc-linux-gnu"
COMPILER="gcc3"
CONFIG_PROTECT="/etc /var/qmail/control /usr/kde/2/share/config
/usr/kde/3/share/config /usr/X11R6/lib/X11/xkb /usr/kde/3.1/share/config
/usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/
/usr/share/config"
CONFIG_PROTECT_MASK="/etc/gconf /etc/env.d"
CXXFLAGS="-march=pentium4 -O3 -funroll-loops -pipe -fomit-frame-pointer -ffast-math"
DISTDIR="/usr/portage/distfiles"
FEATURES="sandbox ccache autoaddcvs"
GENTOO_MIRRORS="http://mirrors.sec.informatik.tu-darmstadt.de/gentoo
http://ftp.easynet.nl/mirror/gentoo/
http://212.219.247.17/sites/www.ibiblio.org/gentoo/"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/ebuilds"
SYNC="rsync://rsync.de.gentoo.org/gentoo-portage"
USE="x86 apm avi crypt cups encode foomaticdb gif jpeg libg++ mad mikmod mmx
mpeg ncurses nls pdflib png quicktime spell truetype xml2 xmms xv zlib gdbm
berkdb slang readline arts tetex svga java X sdl gpm tcpd pam libwww ssl perl
python esd imlib oggvorbis gnome qt kde motif opengl alsa cdr dga directfb dvd
faad fbcon ipv6 mozilla pcmcia radeon samba sse tcltk usb wxwindows xinerama
xosd xvid -oss gtk gtk2"

Created an attachment (id=17400) [edit]
Error Log File

The error log

what version of lua ? `qpkg -I -v lua`

i used lua 4.0, because the ebuild only allows this one  
  
but i modified the ebuild from 
=dev-lang/lua-4.0" 
to 
>=dev-lang/lua-4.0" 
 
emerged lua and tried to compile enigma ... no better result, still crashes 

I just merged enigma with lua-5.0 so I'm going to update the ebuild.  However,
since this didn't help you I'm going to assume that you have something else
broken on your system.

Try this command to see if it works for you:

CFLAGS="-pipe" CXXFLAGS="-pipe" emerge media-libs/libsdl media-libs/sdl-mixer media-libs/sdl-image dev-lang/lua games-puzzle/enigma

This may be a bit extreme but I suspect one of the packages doesn't like the
optimizations you're using.  If this command gets you going again with
enigma, you can try remerging the five packages again, one at a time, with
your current CFLAGS until it breaks.  Then, let me know what package broke
it all.

Thanks.

I tried reemering like you suggested (CFLAGS and CXXFLAGS="-pipe") and still
has the same result.

I'm going to find out if any other package (any dependency of enigma, and the
dependecies of the dependencies) was updated this monday and i will try to
reemerge them with simpler CFLAGS and CXXFLAGS.

This might be a gcc 3.3.1 thing.  Spanky - can you try merging enigma on
your 3.3.1 system and let me know what you come up with please?

You may be right ... i'm updated gcc during the last days, but i'm not sure
when exactly :/

i tried another game using sdl (neverball). It compiles, but if i try to start
it, it only shows "illegal instruction". 

Um...I just noticed this comment in make.conf:

# CRITICAL WARNINGS: ****************************************************** #
# ATHLON-4 will generate invalid SSE  instructions; use 'athlon'   instead. #
# PENTIUM4 will generate invalid SSE2 instructions; use 'pentium3' instead. #
# K6 markings are deceptive. Avoid setting -march for them. See Bug #24379. #
# ************************************************************************* #

I bet that's your problem.  You probably need to rebuild your system without
that -march=pentium4 in your CFLAGS.

Refering to:
http://forums.gentoo.org/viewtopic.php?t=43373
I don't think so. I also ran the python test line and my system passed this test. So it is something else, i think.

But i will give it a try. I will set march=pentium3 and recompile gcc and glibc. But for now i'm downgrading from gcc-3.3.1-r1 to 3.2.3-r2

After downgrading gcc to 3.2.3-r2 and reemerging almost every part of sdl, i
was able to compile enigma ... but starting fails and says "Illegal
Instruction"

Next Test for me: reemerge glibc and after that reemerge sdl

that warning message only applies to gcc-3.2.2 and earlier gcc-3.2.x
gcc-3.2.3 fixed the march=p4 bugs (i know cause i had them and then they went away)

oddly enough, enigma doesnt even merge on my 3.3.1 box (missing assert.h includes in some files)
you dont by chance have multiple versions of gcc emerged do you ?  did you set it to gcc-2.x and forget to set it back ?

i only have one version installed (currently 3.3.1-r1). i will try downgrading 
to 3.2.3-r2 again, this time with VERY soft CFLAGS (something like 
"-mcpu=pentium4 -pipe") ... but maybe not today 

ok, i tried compiling enimga on another machine (athlon-xp, gcc-3.3.1-r1,
development-sources-2.6.0-beta5) and it dies at the same point.

aight, the bug is in your system somewhere, and it's not related to enigma ...
(1) you said it happened with another program (neverball)
(2) enigma works fine on my system with gcc-3.3.1, glibc-2.3.2-r4, 2.6.0-test5

could you give a little background into your system ?
like, what versions of glibc/gcc/kernels have you been utilizing ?

bah i just read your error log ... no idea where you saw 'illegal instruction'
anywhere so i have no idea what's going on ...

i added a patch for the error in your log file, good enough for me

Test System 1: 
gcc 3.3.1-r1 
glibc 2.3.2-r1 
kernel 2.6.0-beta5-mm1 
 
Test System 2: 
gcc 3.3.1-r1 
glibc 2.3.2-r1 
kernel 2.6.0-beta5 
 
 
The illegal instruction is when i start the game. The error log only shows 
what happens when trying to compile. 

well re-emerge it and try it again