emerge of blas-atlas-3.6.0 on Gentoo x86_64 platform based on Pentium-4 630 fails. Compilation of ATLAS proceeds with strange compilation flags, like P4SSE2 and cache size 512KB, and it terminates with error messages. Pentium 4 6XX-series has 2MB of L2 cache. I found that ATLAS version 3.7.0 started to support EM64T and introduced a new architecture name "P4E64SSE3" for Pentium 4 with 64-bit extension. ATLAS 3.7.0 compiles successfully on my 64-bit Gentoo platform when parameters are supplied manually. Reproducible: Always Steps to Reproduce: 1.emerge blas-atlas 2. 3. Actual Results: 1. CPU architecture is incorrectly detected as P4SSE2. 2. cache flush size 512KB is used instead of 4096KB, which is twice the size of L2 cache size of Pentium 4 6XX-series. 3. compilation of ATLAS exits with error. Expected Results: an ebuild of blas-atlas needs to check whether CFLAGS contains reference to "nocona" option, and should exit immediately if yes. ATLAS version before 3.7.10 doesn't support EM64T. Also, L2 cache size must be supplied to ATLAS make file. Portage 2.0.51.22-r2 (default-linux/amd64/2005.0, gcc-3.4.3, glibc-2.3.5-r0, 2.6.12-gentoo-r6 x86_64) ================================================================= System uname: 2.6.12-gentoo-r6 x86_64 Intel(R) Pentium(R) 4 CPU 3.00GHz Gentoo Base System version 1.6.13 dev-lang/python: 2.3.5 sys-apps/sandbox: 1.2.11 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, 1.9.5 sys-devel/binutils: 2.15.92.0.2-r10 sys-devel/libtool: 1.5.18-r1 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /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/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks sandbox sfperms strict" GENTOO_MIRRORS="ftp://ftp.ecc.u-tokyo.ac.jp/GENTOO http://mirror.gentoo.gr.jp http://gentoo.gg3.net/ http://mirror.averse.net/pub/gentoo/ http://gentoo.channelx.biz/ http://gentoo.arcticnetwork.ca/ http://cudlug.cudenver.edu/gentoo/ http://ftp.gentoo.or.kr/ ftp://gg3.net/pub/linux/gentoo/ http://gentoo.mirrors.easynews.com/linux/gentoo/" LINGUAS="en ja" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="amd64 X alsa avi berkdb bitmap-fonts cdr crypt cups curl encode esd fam foomaticdb fortran gdbm gif gnome gpm gtk gtk2 imagemagick imlib ipv6 java jpeg kde libwww lzw lzw-tiff mp3 mpeg mysql ncurses nls opengl pam pdflib perl png python qt quicktime readline ruby sdl slang spell ssl tcltk tcpd tetex tiff truetype-fonts type1-fonts usb userlocales xine xml2 xmms xpm xv zlib linguas_en linguas_ja userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, PORTDIR_OVERLAY
it's no possible to configure ATLAS automatically for each and every architecture. However, you can always run: interactive=1 emerge blas-atlas which will allow you to configure everything manually. Re a broken compilation: If you still can't compile atlas w/ your own configuration, please reopen this bug.
