关于march设置的郁闷问题……

jjj311

我的cpu是athlon x2 3600+，受不了64位下的软件，改到了x86。
在emerge -uDN world的时候要装gcc-3.3.6-r1，我的march设的是k8，然后出错，我看build.log，上面提示说没有k8这个march，然后我就改了i686，通过了。


真是奇怪的，设置k8 有错吗？如果有错其他包怎么编译得过？还是说gcc的版本太老了，那时候还没k8？:ask

daqie

楼主装这个就可以了 sys-libs/libstdc++-v3 . 还有,你的推测是对的,gcc3还没有k8的cflags,所以会出错,但是其实系统里不需要gcc3,只要装上我告诉你那个库就可以了 ps--我最近也遇到这个问题,从forums.gentoo.org找到的答案

幽如冥河

gcc-3.3是不支持k8的. 以下摘自make.conf.example:
# 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