>>> host-libzlib 1.2.12 Extracting
xzcat /home/buildroot/autobuild/instance-2/dl/libzlib/zlib-1.2.12.tar.xz | tar --strip-components=1 -C /home/buildroot/autobuild/instance-2/output-1/build/host-libzlib-1.2.12   -xf -
>>> host-libzlib 1.2.12 Patching

Applying 0001-Fix-configure-issue-that-discarded-provided-CC-definition.patch using patch: 
patching file configure
>>> host-libzlib 1.2.12 Configuring
(cd /home/buildroot/autobuild/instance-2/output-1/build/host-libzlib-1.2.12; rm -rf config.cache;  PATH="/home/buildroot/autobuild/instance-2/output-1/host/bin:/home/buildroot/autobuild/instance-2/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" PKG_CONFIG="/home/buildroot/autobuild/instance-2/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-2/output-1/host/lib/pkgconfig:/home/buildroot/autobuild/instance-2/output-1/host/share/pkgconfig" AR="/usr/bin/ar" AS="/usr/bin/as" LD="/usr/bin/ld" NM="/usr/bin/nm" CC="/usr/bin/gcc" GCC="/usr/bin/gcc" CXX="/usr/bin/g++" CPP="/usr/bin/cpp" OBJCOPY="/usr/bin/objcopy" RANLIB="/usr/bin/ranlib" CPPFLAGS="-I/home/buildroot/autobuild/instance-2/output-1/host/include" CFLAGS="-O2 -I/home/buildroot/autobuild/instance-2/output-1/host/include" CXXFLAGS="-O2 -I/home/buildroot/autobuild/instance-2/output-1/host/include" LDFLAGS="-L/home/buildroot/autobuild/instance-2/output-1/host/lib -Wl,-rpath,/home/buildroot/autobuild/instance-2/output-1/host/lib" INTLTOOL_PERL=/usr/bin/perl ./configure --prefix="/home/buildroot/autobuild/instance-2/output-1/host" --sysconfdir="/home/buildroot/autobuild/instance-2/output-1/host/etc" )
ignored option: --sysconfdir
Checking for shared library support...
Building shared library libz.so.1.2.12 with /usr/bin/gcc.
Checking for size_t... Yes.
Checking for off64_t... Yes.
Checking for fseeko... Yes.
Checking for strerror... Yes.
Checking for unistd.h... Yes.
Checking for stdarg.h... Yes.
Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf().
Checking for vsnprintf() in stdio.h... Yes.
Checking for return value of vsnprintf()... Yes.
Checking for attribute(visibility) support... Yes.
>>> host-libzlib 1.2.12 Building
PATH="/home/buildroot/autobuild/instance-2/output-1/host/bin:/home/buildroot/autobuild/instance-2/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" PKG_CONFIG="/home/buildroot/autobuild/instance-2/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-2/output-1/host/lib/pkgconfig:/home/buildroot/autobuild/instance-2/output-1/host/share/pkgconfig" /usr/bin/make -j1 -C /home/buildroot/autobuild/instance-2/output-1/build/host-libzlib-1.2.12
make[1]: Entering directory '/home/buildroot/autobuild/instance-2/output-1/build/host-libzlib-1.2.12'
/usr/bin/gcc -O2 -I/home/buildroot/autobuild/instance-2/output-1/host/include -D_LARGEFILE64_SOURCE=1 -DHAVE_HIDDEN -I. -c -o example.o test/example.c
/usr/bin/gcc -O2 -I/home/buildroot/autobuild/instance-2/output-1/host/include -D_LARGEFILE64_SOURCE=1 -DHAVE_HIDDEN  -c -o adler32.o adler32.c
/usr/bin/gcc -O2 -I/home/buildroot/autobuild/instance-2/output-1/host/include -D_LARGEFILE64_SOURCE=1 -DHAVE_HIDDEN  -c -o crc32.o crc32.c
/usr/bin/gcc -O2 -I/home/buildroot/autobuild/instance-2/output-1/host/include -D_LARGEFILE64_SOURCE=1 -DHAVE_HIDDEN  -c -o deflate.o deflate.c
/usr/bin/gcc -O2 -I/home/buildroot/autobuild/instance-2/output-1/host/include -D_LARGEFILE64_SOURCE=1 -DHAVE_HIDDEN  -c -o infback.o infback.c
/usr/bin/gcc -O2 -I/home/buildroot/autobuild/instance-2/output-1/host/include -D_LARGEFILE64_SOURCE=1 -DHAVE_HIDDEN  -c -o inffast.o inffast.c
/usr/bin/gcc -O2 -I/home/buildroot/autobuild/instance-2/output-1/host/include -D_LARGEFILE64_SOURCE=1 -DHAVE_HIDDEN  -c -o inflate.o inflate.c
inflate.c:1592:1: fatal error: error writing to /tmp/cciUEsCF.s: No space left on device
 }
 ^
compilation terminated.
Makefile:175: recipe for target 'inflate.o' failed
make[1]: *** [inflate.o] Error 1
make[1]: Leaving directory '/home/buildroot/autobuild/instance-2/output-1/build/host-libzlib-1.2.12'
package/pkg-generic.mk:290: recipe for target '/home/buildroot/autobuild/instance-2/output-1/build/host-libzlib-1.2.12/.stamp_built' failed
make: *** [/home/buildroot/autobuild/instance-2/output-1/build/host-libzlib-1.2.12/.stamp_built] Error 2
make: Leaving directory '/home/buildroot/autobuild/instance-2/buildroot'