[Buildroot] Buildproblems while running make

Hello,

I'm successful setting up BR for building a ARM cross compiler with
CT-NG. Now I've added a project specific kernelconfig for 2.6.39.4 and
started a build process.

The whole cross compiler part is working without problems, so after this
some tools should be builded. But the build failed with an error message
about aclocal could not be found.
This confuses me a little bit, because some lines above is to see that
automake1.11 was successful builded. Here is the relevant output.

make[3]: F?r das Ziel ?install-exec-am? ist nichts zu tun.
 /bin/mkdir -p '/home/carsten/gitprojects/buildroot/output/target/usr/share/aclocal-1.11'
 /usr/bin/install -c -m 644 ../m4/amversion.m4 ar-lib.m4 as.m4 auxdir.m4 ccstdc.m4 cond.m4 cond-if.m4 depend.m4 depout.m4 dmalloc.m4 gcj.m4 header.m4 init.m4 install-sh.m4 lead-dot.m4 lex.m4 lispdir.m4 maintainer.m4 make.m4 minuso.m4 missing.m4 mkdirp.m4 multi.m4 obsol-gt.m4 obsol-lt.m4 obsolete.m4 options.m4 protos.m4 python.m4 regex.m4 runlog.m4 sanity.m4 silent.m4 strip.m4 substnot.m4 tar.m4 upc.m4 vala.m4 '/home/carsten/gitprojects/buildroot/output/target/usr/share/aclocal-1.11'
make[3]: Leaving directory `/home/carsten/gitprojects/buildroot/output/build/automake-1.11.5/m4'
make[2]: Leaving directory `/home/carsten/gitprojects/buildroot/output/build/automake-1.11.5/m4'
Making install in tests
make[2]: Entering directory `/home/carsten/gitprojects/buildroot/output/build/automake-1.11.5/tests'
make[3]: Entering directory `/home/carsten/gitprojects/buildroot/output/build/automake-1.11.5/tests'
make[3]: F?r das Ziel ?install-exec-am? ist nichts zu tun.
make[3]: F?r das Ziel ?install-data-am? ist nichts zu tun.
make[3]: Leaving directory `/home/carsten/gitprojects/buildroot/output/build/automake-1.11.5/tests'
make[2]: Leaving directory `/home/carsten/gitprojects/buildroot/output/build/automake-1.11.5/tests'
make[1]: Leaving directory `/home/carsten/gitprojects/buildroot/output/build/automake-1.11.5'
mkdir -p /home/carsten/gitprojects/buildroot/output/target/etc
echo "buildroot" > /home/carsten/gitprojects/buildroot/output/target/etc/hostname
/bin/sed -i -e '$a \127.0.1.1\tbuildroot' \
		-e '/^127.0.1.1/d' /home/carsten/gitprojects/buildroot/output/target/etc/hosts
mkdir -p /home/carsten/gitprojects/buildroot/output/target/etc
echo "Welcome to Buildroot" > /home/carsten/gitprojects/buildroot/output/target/etc/issue
/bin/sed -i -e '/# GENERIC_SERIAL$/s~^.*#~ttyS0::respawn:/sbin/getty -L ttyS0 115200 vt100 #~' \
		/home/carsten/gitprojects/buildroot/output/target/etc/inittab
/bin/sed -i -e '/^#.*# REMOUNT_ROOTFS_RW$/s~^#\+~~' /home/carsten/gitprojects/buildroot/output/target/etc/inittab

quoted

quoted

quoted

host-module-init-tools 3.15 Autoreconfiguring

aclocal: couldn't open directory '/home/carsten/gitprojects/buildroot/output/host/usr/arm-unknown-linux-gnueabi/sysroot/usr/share/aclocal': Datei oder Verzeichnis nicht gefunden
autoreconf: /home/carsten/gitprojects/buildroot/output/host/usr/bin/aclocal failed with exit status: 1
make: *** [/home/carsten/gitprojects/buildroot/output/build/host-module-init-tools-3.15/.stamp_configured] Fehler 1

Did I something misconfigured or misunderstood?
Can someone point me to the correct direction? If there some config
files needed just let me know.

And one more question, if I rerun make (without changes to BR) the
complete cross compiler will be rebuilded, why this happen?

Thanks in advice,
Carsten