>>> host-autoconf 2.71 Extracting
xzcat /home/buildroot/autobuild/instance-3/dl/autoconf/autoconf-2.71.tar.xz | tar --strip-components=1 -C /home/buildroot/autobuild/instance-3/output-1/build/host-autoconf-2.71   -xf -
>>> host-autoconf 2.71 Patching

Applying 0001-dont-add-dirty-to-version.patch using patch: 
patching file build-aux/git-version-gen
Hunk #1 succeeded at 209 (offset 6 lines).
>>> host-autoconf 2.71 Updating config.sub and config.guess
for file in config.guess config.sub; do for i in $(find /home/buildroot/autobuild/instance-3/output-1/build/host-autoconf-2.71 -name $file); do cp support/gnuconfig/$file $i; done; done
>>> host-autoconf 2.71 Patching libtool
>>> host-autoconf 2.71 Configuring
(cd /home/buildroot/autobuild/instance-3/output-1/build/host-autoconf-2.71/ && rm -rf config.cache; PATH="/home/buildroot/autobuild/instance-3/output-1/host/bin:/home/buildroot/autobuild/instance-3/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" PKG_CONFIG="/home/buildroot/autobuild/instance-3/output-1/host/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_LIBDIR="/home/buildroot/autobuild/instance-3/output-1/host/lib/pkgconfig:/home/buildroot/autobuild/instance-3/output-1/host/share/pkgconfig" AR="/usr/bin/ar" AS="/usr/bin/as" LD="/usr/bin/ld" NM="/usr/bin/nm" CC="/home/buildroot/autobuild/instance-3/output-1/host/bin/ccache /usr/bin/gcc" GCC="/home/buildroot/autobuild/instance-3/output-1/host/bin/ccache /usr/bin/gcc" CXX="/home/buildroot/autobuild/instance-3/output-1/host/bin/ccache /usr/bin/g++" CPP="/usr/bin/cpp" OBJCOPY="/usr/bin/objcopy" RANLIB="/usr/bin/ranlib" CPPFLAGS="-I/home/buildroot/autobuild/instance-3/output-1/host/include" CFLAGS="-O2 -I/home/buildroot/autobuild/instance-3/output-1/host/include" CXXFLAGS="-O2 -I/home/buildroot/autobuild/instance-3/output-1/host/include" LDFLAGS="-L/home/buildroot/autobuild/instance-3/output-1/host/lib -Wl,-rpath,/home/buildroot/autobuild/instance-3/output-1/host/lib" INTLTOOL_PERL=/usr/bin/perl CFLAGS="-O2 -I/home/buildroot/autobuild/instance-3/output-1/host/include" LDFLAGS="-L/home/buildroot/autobuild/instance-3/output-1/host/lib -Wl,-rpath,/home/buildroot/autobuild/instance-3/output-1/host/lib" EMACS="no" ac_cv_path_M4=/home/buildroot/autobuild/instance-3/output-1/host/bin/m4 ac_cv_prog_gnu_m4_gnu=no CONFIG_SITE=/dev/null ./configure --prefix="/home/buildroot/autobuild/instance-3/output-1/host" --sysconfdir="/home/buildroot/autobuild/instance-3/output-1/host/etc" --localstatedir="/home/buildroot/autobuild/instance-3/output-1/host/var" --enable-shared --disable-static --disable-gtk-doc --disable-gtk-doc-html --disable-doc --disable-docs --disable-documentation --disable-debug --with-xmlto=no --with-fop=no --disable-nls --disable-dependency-tracking   )
configure: WARNING: unrecognized options: --enable-shared, --disable-static, --disable-gtk-doc, --disable-gtk-doc-html, --disable-doc, --disable-docs, --disable-documentation, --disable-debug, --with-xmlto, --with-fop, --disable-nls, --disable-dependency-tracking
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a race-free mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
configure: error: cannot run /bin/bash ./build-aux/config.sub
package/pkg-generic.mk:273: recipe for target '/home/buildroot/autobuild/instance-3/output-1/build/host-autoconf-2.71/.stamp_configured' failed
make: *** [/home/buildroot/autobuild/instance-3/output-1/build/host-autoconf-2.71/.stamp_configured] Error 1
make: Leaving directory '/home/buildroot/autobuild/instance-3/buildroot'