I get an internal compiler error when I try to merge LyX 1.3.5 with "-Os". Reproducible: Always Steps to Reproduce: 1. Add "-Os" to CFLAGS in make.conf 2. emerge lyx 3. wait Actual Results: GCC complains of an internal error. Expected Results: LyX is now merged and functional. emerge --info: Portage 2.0.51-r3 (default-linux/x86/2004.3, gcc-3.3.4, glibc-2.3.4.20040808-r1, 2.6.9-rc1-mm5 i686) ================================================================= System uname: 2.6.9-rc1-mm5 i686 AMD Duron(tm) Processor Gentoo Base System version 1.4.16 distcc 2.16 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.3 [enabled] Autoconf: sys-devel/autoconf-2.59-r5 Automake: sys-devel/automake-1.8.5-r1 Binutils: sys-devel/binutils-2.15.90.0.1.1-r3 Headers: sys-kernel/linux-headers-2.4.19-r1,sys-kernel/linux-headers-2.4.21-r1 Libtools: sys-devel/libtool-1.5.2-r7 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-march=athlon-tbird -Os -pipe -fstack-protector -fforce-addr" CHOST="i686-pc-linux-gnu" COMPILER="" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3.1/share/config /usr/kde/3.2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3/share/config /usr/lib/mozilla/defaults/pref /usr/share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/qmail/alias /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=athlon-tbird -Os -pipe -fstack-protector -fforce-addr" DISTDIR="/var/cache/portage/distfiles" FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms strict userpriv usersandbox" GENTOO_MIRRORS="http://gentoo.seren.com/gentoo http://www.ibiblio.org/gentoo ftp://ftp.gtlib.cc.gatech.edu/pub/gentoo http://gentoo.mirrors.pair.com/" MAKEOPTS="-j2" PKGDIR="/var/cache/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/var/cache/portage" PORTDIR_OVERLAY="/var/cache/bmg-main /home/jrogers/ebuilds /usr/local/overlays/deltup" SYNC="rsync://rsync.us.gentoo.org/gentoo-portage" USE="3dnow X aalib acpi alsa apache2 apm auctex avi berkdb bitmap-fonts bonobo caps cdr chroot clisp cmucl crypt cups dga dillo directfb dnd dvd encode esd f77 fam fbcon flac foomaticdb fortran gatos gdbm geoip ggi gif gimpprint gnome gstreamer gtk gtk2 gtkhtml guile imagemagick imap imlib ipv6 jack java javascript jikes jpeg junit ladcca lcms libg++ libwww mad maildir matroska mbox mdb mikmod mitshm mmx mng mozilla moznoirc mozp3p mozsvg mozxmlterm mpeg music mysql ncurses odbc ofx oggvorbis openal opengl oss pam parse-clocks pcre pdflib plotutils png postgres ppds python qt qtmt quicktime radeon readline samba sdl slang snmp spell sqlite ssl stencil-buffer stroke tcltk tcpd tetex theora tiff transcode truetype v4l v4l2 wmf wxwindows x86 xface xfs xine xml xml2 xmms xv xvid zlib video_cards_radeon"
Created attachment 45665 [details, diff] causes LyX to be built with "-O2" instead of "-Os" This patch allows a successful build on my system.
Works fine for me with these flags: CFLAGS="-Os -mcpu=i686 -fomit-frame-pointer" CXXFLAGS="-Os -mcpu=i686 -fomit-frame-pointer" Probably it's athlon specific issue?
Since I seem to have found a bug in GCC, it's not at all surprising that it only triggers with certain CPU models.
I see the same result on a pentium4. It didn't work with the following CFLAGS: CFLAGS="-Os -march=pentium4 -mmmx -msse -msse2 -mfpmath=sse -ffast-math -fomit-frame-pointer -pipe" CFLAGS="-Os -march=pentium4" CFLAGS="-Os" It did, however, work with CFLAGS="-O2 -march=pentium4 -mmmx -msse -msse2 -mfpmath=sse -ffast-math -fomit-frame-pointer -pipe". So, it really seems to be related to some flag inside -Os.
Okay. Thanks for the bug report. I filtered "-Os" from lyx-1.3.5.ebuild. Hope some of you get benefits from this change.
