>>> fontconfig 2.14.2 Extracting
xzcat /home/autobuild/autobuild/instance-18/dl/fontconfig/fontconfig-2.14.2.tar.xz | tar --strip-components=1 -C /home/autobuild/autobuild/instance-18/output-1/build/fontconfig-2.14.2   -xf -
>>> fontconfig 2.14.2 Patching

Applying 0001-add-pthread-as-a-dependency-of-a-static-lib.patch using patch: 
patching file configure.ac
Hunk #1 succeeded at 739 (offset 49 lines).
patching file fontconfig.pc.in
>>> fontconfig 2.14.2 Updating config.sub and config.guess
for file in config.guess config.sub; do for i in $(find /home/autobuild/autobuild/instance-18/output-1/build/fontconfig-2.14.2 -name $file); do cp support/gnuconfig/$file $i; done; done
>>> fontconfig 2.14.2 Configuring
>>> fontconfig 2.14.2 Autoreconfiguring
/home/autobuild/autobuild/instance-18/output-1/host/bin/m4: error writing to debug stream
autom4te: error: /home/autobuild/autobuild/instance-18/output-1/host/bin/m4 failed with exit status: 1
aclocal: error: /home/autobuild/autobuild/instance-18/output-1/host/bin/autom4te failed with exit status: 1
autoreconf: error: /home/autobuild/autobuild/instance-18/output-1/host/bin/aclocal failed with exit status: 1
make: *** [package/pkg-generic.mk:278: /home/autobuild/autobuild/instance-18/output-1/build/fontconfig-2.14.2/.stamp_configured] Error 1
make: Leaving directory '/home/autobuild/autobuild/instance-18/buildroot'