[gentoo-alt] Bootstrapping binutils breaks

[Al]

When doing    "emerge --oneshot --nodeps binutils" I run into errors
starting with  a missing "sys/user.h". I find no direcotry "sys" in
the ".../bfd/" direcory. I did run it twice with the same result, so I
don't assume an instability of Cygwin.

Does this look like a bug in the sources of binutils? Hmm, it worked
on linux some days before.

Is it a missing dependency?

Is it a missconfiguration of mine?

Thank you

Al


##########################
some context before:
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make[4]: Entering directory
`/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/build/bfd'

[ ... ]

libtool: compile:  gcc -DHAVE_CONFIG_H -I.
-I/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd
-DTRAD_CORE -I.
-I/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd
-I/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/../include
-DBINDIR=\"/home/prefix/gentoo/usr/i686-pc-linux-gnu/binutils-bin/2.20.51.0.8\"
-I/home/prefix/gentoo/usr/include -W -Wall -Wstrict-prototypes
-Wmissing-prototypes -Wshadow -march=native -O2 -pipe -MT trad-core.lo
-MD -MP -MF .deps/trad-core.Tpo -c
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c
 -o .libs/trad-core.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I.
-I/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd
-DTRAD_CORE -I.
-I/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd
-I/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/../include
-DBINDIR=\"/home/prefix/gentoo/usr/i686-pc-linux-gnu/binutils-bin/2.20.51.0.8\"
-I/home/prefix/gentoo/usr/include -W -Wall -Wstrict-prototypes
-Wmissing-prototypes -Wshadow -march=native -O2 -pipe -MT cpu-l1om.lo
-MD -MP -MF .deps/cpu-l1om.Tpo -c
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/cpu-l1om.c
-o cpu-l1om.o >/dev/null 2>&1

##########################
erorrs start here:
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/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:45:44:
error: sys/user.h: No such file or directory
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:60:
error: field ‘u’ has incomplete type

/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:
In function ‘trad_unix_core_file_p’:
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:84:
error: storage size of ‘u’ isn’t known
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:122:
error: ‘UPAGES’ undeclared (first use in this function)
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:122:
error: (Each undeclared identifier is reported only once
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:122:
error: for each function it appears in.)
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:191:
error: ‘HOST_TEXT_START_ADDR’ undeclared (first use in this function)
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:197:
error: ‘HOST_STACK_END_ADDR’ undeclared (first use in this function)
/home/prefix/gentoo/var/tmp/portage/sys-devel/binutils-2.20.51.0.8/work/binutils-2.20.51.0.8/bfd/trad-core.c:84:
warning: unused variable ‘u’