Флаги в make.conf

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# Host and optimization settings
# ==============================
#
# For optimal performance, enable a CFLAGS setting appropriate for your CPU.
#
# Please note that if you experience strange issues with a package, it may be
# due to gcc's optimizations interacting in a strange way. Please test the
# package (and in some cases the libraries it uses) at default optimizations
# before reporting errors to developers.
#
# -mcpu= means optimize code for the particular type of CPU without
# breaking compatibility with other CPUs.
#
# -march= means to take full advantage of the ABI and instructions
# for the particular CPU; this will break compatibility with older CPUs (for
# example, -march=athlon-xp code will not run on a regular Athlon, and
# -march=i686 code will not run on a Pentium Classic.
#
# CPU types supported by gcc version:
# (Higher versions include the targets from older ones,
# those listed on the same line are equivalent.)
# === >=gcc-2.95
# i386 Original Intel's i386.
# i486 Intel's i486. (No scheduling implemented.)
# i586, pentium Intel Pentium with no MMX support.
# pentium-mmx Intel PentiumMMX based on Pentium core with MMX.
# i686, pentiumpro Intel PentiumPro.
# === >=gcc-3.2
# k6 AMD K6 with MMX.
# k6-2, k6-3 AMD K6 with MMX and 3dNOW!.
# pentium2 Intel Pentium2 based on PentiumPro with MMX.
# pentium3 Intel Pentium3 based on PentiumPro with MMX and SSE.
# pentium4 Intel Pentium4 with MMX, SSE and SSE2.
# athlon, athlon-tbird AMD Athlon with MMX, 3dNOW!, enhanced 3dNOW!
# and SSE prefetch.
# athlon-4, athlon-xp, athlon-mp AMD Athlon with MMX, 3dNOW!, enhanced
# 3dNOW! and full SSE.
# === >=gcc-3.3
# winchip-c6 IDT Winchip C6, i486 with MMX.
# winchip2 IDT Winchip2, i486 MMX and 3dNOW!.
# c3 Via C3 with MMX and 3dNOW! (No scheduling implemented.)
# === >=gcc-4.1
# c3-2 Via C3-2 with MMX and SSE. (No scheduling implemented.)
# pentium-m Low power version of Intel Pentium3 with MMX, SSE, SSE2.
# Used by Centrino notebooks.
# prescott Intel Pentium4 with MMX, SSE, SSE2 and SSE3.
# nocona Intel Pentium4 with 64-bit extensions, MMX, SSE, SSE2
# and SSE3.
# k8, opteron, athlon64, athlon-fx AMD K8 core based CPUs with x86-64.
# (This supersets MMX, SSE, SSE2, 3dNOW!, enhanced 3dNOW! and
# 64-bit extensions.)
#
# Gentoo Linux 1.2 and below used gcc-2.95*
# Gentoo Linux 1.4 and 2004.* had gcc-3.2
# Gentoo Linux 2005.1 through 2006.0 use gcc-3.3
# Gentoo Linux 2006.1 has gcc-4.1

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Intel P4/Xeon Extended MCE MSRs 3200 x2 SMP IBM Xseries 346 4Gb/chip video ATI Radeon QY 8Mb/
Portage 2.1.3.7 (default-linux/x86/2007.0, gcc-4.2.0, glibc-2.6.1-r0, 2.6.22-gentoo-r5 i686)