rrdtool needs something like the attached patch to run without an floating point exception.
Created attachment 83729 [details, diff] patch to add -mieee if use alpha is set
Alpha: feel free to commit if you like.
Users should have -mieee on their C[XX]FLAGS. On top of that we patch GCC so it always uses -mieee by default. Thanks for the report anyway. Cheers, Ferdy
(In reply to comment #3) > Users should have -mieee on their C[XX]FLAGS. On top of that we patch GCC so it > always uses -mieee by default. Since I installed gentoo on my alpha some years ago, I've never specified -mieee in my CFLAGS and it worked flawlessly... Why should I specify -mieee in the flags, when gcc is patched with -mieee as default? And why didn't rrdtool work correctly when gcc adds -mieee by default? I looked at the gentoo-install docs and found no reference that I should use that flag. Could you give me a link, please? I grep'ed through portage now, and found a lot ebuilds that do the same as I suggested, why? Thank you Marc
Please post your emerge --info to see why you needed to append-flags -mieee. The -mieee flag should be turned on because lot of software depends on IEEE-compliant fp math. And we've seen weird breakages in the past related to this flag. Gcc does that to prevent such breakages in case the user forgets to add the -mieee flag. I belive the make.conf.example has that flag turned on. The Gentoo/Alpha FAQ should have more information: http://www.gentoo.org/doc/en/gentoo-alpha-faq.xml Cheers, Ferdy
Ok, thank you for the explanations! witch work # emerge --info Portage 2.0.54 (default-linux/alpha/2005.0, gcc-3.4.4, glibc-2.3.5-r3, 2.6.15.4 alpha) ================================================================= System uname: 2.6.15.4 alpha EV56 Gentoo Base System version 1.6.14 distcc 2.18.3 alpha-unknown-linux-gnu (protocols 1 and 2) (default port 3632) [enabled] ccache version 2.3 [enabled] dev-lang/python: 2.2.3-r5, 2.3.5-r2, 2.4.2 sys-apps/sandbox: 1.2.12 sys-devel/autoconf: 2.13, 2.59-r6 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1 sys-devel/binutils: 2.15.92.0.2-r10 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r4 ACCEPT_KEYWORDS="alpha" AUTOCLEAN="yes" CBUILD="alpha-unknown-linux-gnu" CFLAGS="-mcpu=ev56 -O2 -pipe" CHOST="alpha-unknown-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/eselect/compiler /etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-mcpu=ev56 -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig ccache distcc distlocks sandbox sfperms strict" GENTOO_MIRRORS="ftp://sunsite.cnlab-switch.ch/mirror/gentoo http://gentoo.oregonstate.edu http://www.ibiblio.org/pub/Linux/distributions/gentoo" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage /usr/local/portage/gentoo-java-experimental" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="alpha acl apache apache2 arts berkdb bitmap-fonts bzip2 crypt cups dri eds encode ev56 expat font-server foomaticdb fortran gd gdbm gif gmp gpm gstreamer gtk2 imlib ipv6 jikes jpeg libg++ libwww mad mhash mikmod motif mp3 mpeg mysql ncurses nls no-htdocs nptl ogg oggvorbis opengl oss pam pcre pdflib perl php png postgres python quicktime readline sdl slang snmp spell ssl tcpd tiff truetype-fonts type1-fonts udev vorbis xmms xv zlib userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, LINGUAS
