Bugzilla Bug 165717

pie

x86 stable

sparc stable.

Stable for HPPA.

stable on amd64

Stable on ppc

ppc64 stable

Stable on MIPS.

not stable on i686. expexts that a compiler exists named i386-pc-linux-gnu-gcc,
even if the CHOST=i686-pc-linux-gnu, and the compiler is called
i686-pc-linux-gnu-gcc

emerge --info:

Portage 2.1.2-r9 (default-linux/x86/2006.1, gcc-4.1.1, glibc-2.4-r4,
2.6.19-gentoo-r5 i686)
=================================================================
System uname: 2.6.19-gentoo-r5 i686 Intel(R) Pentium(R) M processor 1.73GHz
Gentoo Base System release 1.12.9
Timestamp of tree: Sat, 17 Feb 2007 08:30:01 +0000
ccache version 2.4 [enabled]
dev-java/java-config: 1.3.7, 2.0.31-r2
dev-lang/python:     2.3.5-r3, 2.4.3-r4
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache:     2.4-r6
sys-apps/sandbox:    1.2.17
sys-devel/autoconf:  2.13, 2.61
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10
sys-devel/binutils:  2.16.1-r3
sys-devel/gcc-config: 1.3.14
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.17-r2
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-g -O2 -march=pentium-m -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config
/usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf
/etc/java-config/vms/ /etc/revdep-rebuild /etc/splash /etc/terminfo
/etc/texmf/web2c"
CXXFLAGS="-g -O2 -march=pentium-m -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig ccache distlocks metadata-transfer sandbox sfperms strict"
GENTOO_MIRRORS="http://distfiles.gentoo.org
http://distro.ibiblio.org/pub/linux/distributions/gentoo"
LINGUAS="en de"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --delete-after --stats --timeout=180
--exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/portage/local /usr/portage/local/layman/portage-xgl"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X acpi alsa avahi beagle berkdb bitmap-fonts bluetooth bzip2 cairo cdr cli
cracklib crypt cups curl dbus djvu dlloader dri dvdr dvi emacs esd firefox
fortran galago gdbm gif gnome gpm gs gstreamer gtk hal howl iconv idn imlib
irda isdnlog jpeg libg++ logrotate mad midi mmx mono mp3 mpeg ncurses nptl
nptlonly ntpl ogg opengl pam pcre perl png ppds pppd python readline reflection
samba sdl session slang spl sse sse2 ssl svg syslog tcpd tiff truetype
truetype-fonts type1-fonts unicode usb userlocales vorbis win32codecs x86
xinerama xml xorg xvid zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm
alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa
lfloat linear meter mulaw multi null plug rate route share shm softvol"
ELIBC="glibc" INPUT_DEVICES="keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad
cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en de"
USERLAND="GNU" VIDEO_CARDS="radeon fglrx vesa"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS,
PORTAGE_RSYNC_EXTRA_OPTS

see attachment for /var/tmp/portage/sys-apps/file-4.19/temp/build.log 

Created an attachment (id=110480) [edit]
build log for file-4.19

sorry, no time to create a patch right now. 

has nothing to do with file, please go read the change chost document:
http://www.gentoo.org/doc/en/change-chost.xml