emerge ghc失败，好像是没有i686-pc-linux-gnu-gcc，我的机子本来就没有这个，只有i486-p

[hanaidong]

checking version of ghc... 7.6.3
checking build system type... i486-pc-linux-gnu
checking host system type... i486-pc-linux-gnu
checking target system type... i486-pc-linux-gnu
HOST: i486-pc-linux-gnu
GHC build : i386-unknown-linux
GHC host : i386-unknown-linux
GHC target : i386-unknown-linux
configure: Building in-tree ghc-pwd
ghc: could not execute: i686-pc-linux-gnu-gcc
configure: error: Building ghc-pwd failed

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/dev-lang/ghc-7.6.3-r1/work/ghc-7.6.3/config.log
* ERROR: dev-lang/ghc-7.6.3-r1::gentoo failed (configure phase):
* econf failed
*
* Call stack:
* ebuild.sh, line 93: Called src_configure
* environment, line 4096: Called econf '--with-gcc=i486-pc-linux-gnu-gcc' '--enable-bootstrap-with-devel-snapshot'
* phase-helpers.sh, line 577: Called die
* The specific snippet of code:
* die "econf failed"
*
* If you need support, post the output of `emerge --info '=dev-lang/ghc-7.6.3-r1::gentoo'`,
* the complete build log and the output of `emerge -pqv '=dev-lang/ghc-7.6.3-r1::gentoo'`.
* The complete build log is located at '/var/tmp/portage/dev-lang/ghc-7.6.3-r1/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/dev-lang/ghc-7.6.3-r1/temp/environment'.
* Working directory: '/var/tmp/portage/dev-lang/ghc-7.6.3-r1/work/ghc-7.6.3'
* S: '/var/tmp/portage/dev-lang/ghc-7.6.3-r1/work/ghc-7.6.3'

>>> Failed to emerge dev-lang/ghc-7.6.3-r1, Log file:

>>> '/var/tmp/portage/dev-lang/ghc-7.6.3-r1/temp/build.log'

* Messages for package dev-lang/ghc-7.6.3-r1:

* ERROR: dev-lang/ghc-7.6.3-r1::gentoo failed (configure phase):
* econf failed
*
* Call stack:
* ebuild.sh, line 93: Called src_configure
* environment, line 4096: Called econf '--with-gcc=i486-pc-linux-gnu-gcc' '--enable-bootstrap-with-devel-snapshot'
* phase-helpers.sh, line 577: Called die
* The specific snippet of code:
* die "econf failed"
*
* If you need support, post the output of `emerge --info '=dev-lang/ghc-7.6.3-r1::gentoo'`,
* the complete build log and the output of `emerge -pqv '=dev-lang/ghc-7.6.3-r1::gentoo'`.
* The complete build log is located at '/var/tmp/portage/dev-lang/ghc-7.6.3-r1/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/dev-lang/ghc-7.6.3-r1/temp/environment'.
* Working directory: '/var/tmp/portage/dev-lang/ghc-7.6.3-r1/work/ghc-7.6.3'