espeak compiles and reads aloud texts from command line also on amd64,
therefore ~amd64 would be justified. One just needs to allow emerging the other
~amd64 dependencies.
firstown ~ # emerge -pvuD --info espeak
Portage 2.1.1-r1 (default-linux/amd64/2006.0, gcc-4.1.1, glibc-2.4-r4,
2.6.17-gentoo-r8 x86_64)
=================================================================
System Settings
=================================================================
System uname: 2.6.17-gentoo-r8 x86_64 AMD Athlon(tm) 64 Processor 3500+
Gentoo Base System version 1.12.6
Last Sync: Mon, 06 Nov 2006 12:00:02 +0000
app-admin/eselect-compiler: [Not Present]
dev-java/java-config: 1.3.7, 2.0.30
dev-lang/python: 2.4.3-r4
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache: [Not Present]
dev-util/confcache: [Not Present]
sys-apps/sandbox: 1.2.17
sys-devel/autoconf: 2.13, 2.60
sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2
sys-devel/binutils: 2.16.1-r3
sys-devel/gcc-config: 1.3.13-r4
sys-devel/libtool: 1.5.22
virtual/os-headers: 2.6.11-r2
ABI="amd64"
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE=""
ALSA_CARDS="intel8x0"
ANT_HOME="/usr/share/ant-core"
ARCH="amd64"
ASFLAGS_x86="--32"
AUTOCLEAN="yes"
CBUILD="x86_64-pc-linux-gnu"
CDEFINE_amd64="__x86_64__"
CDEFINE_x86="__i386__"
CFLAGS="-O2 -march=k8 -fomit-frame-pointer -pipe"
(I'll dump the whole --info result if need to)