checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking how to create a pax tar archive... gnutar checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking for gcc... gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking for style of include used by make... GNU checking dependency style of gcc... none checking for g++... g++ checking whether we are using the GNU C++ compiler... yes checking whether g++ accepts -g... yes checking dependency style of g++... none checking for make... /usr/bin/make checking for gzip... /bin/gzip checking for ant... /usr/bin/ant checking for find... /usr/bin/find checking for patch... /usr/bin/patch checking for tar... /bin/tar checking for chmod... /bin/chmod checking for sha256sum... /usr/bin/sha256sum checking for wget... /usr/bin/wget checking for zip... /usr/bin/zip checking for unzip... /usr/bin/unzip checking for cpio... /bin/cpio checking for file... /usr/bin/file checking for fastjar... fastjar checking for ldd... ldd checking for gawk... /usr/bin/gawk checking for hg... /usr/bin/hg checking for an OpenJDK source directory... /usr/local/build/icedtea-trunk-build/openjdk checking for IcedTea Mercurial revision ID... r2e8f301c5848 checking for JDK Mercurial revision ID... none checking for HotSpot Mercurial revision ID... none checking for lsb_release... /usr/bin/lsb_release checking whether to compile ecj natively... no checking which HotSpot build to use... default checking for linux32... /usr/bin/linux32 checking version of GCC... 4.4.5 (major version 4, minor version 4) checking for getconf... /usr/bin/getconf checking the number of online processors... 4 checking if cp supports --reflink... yes checking if we can hard link rather than copy from /usr/local/build/icedtea-trunk... yes checking whether to disable the execution of the JTReg tests... no checking whether to disable the execution of the HotSpot JTReg tests... no checking whether to disable the execution of the langtools JTReg tests... no checking whether to disable the execution of the JDK JTReg tests... no checking for xvfb-run... xvfb-run -a -e xvfb-errors checking whether to include PulseAudio support... no checking whether to build documentation... yes checking whether to include SystemTap tracing support... no checking for system library directory... checking for pkg-config... /usr/bin/pkg-config checking pkg-config is at least version 0.9.0... yes checking whether to enable the NSS-based security provider... enabled by default (edit java.security to disable) checking for NSS... yes checking for distribution package version... none checking build identification... Built on Debian GNU/Linux 6.0.7 (squeeze) (Wed May 8 22:06:12 UTC 2013) checking how many parallel build jobs to execute... 2 checking whether to build a bootstrap version first... yes checking for a JDK home directory... configure: error: "A JDK home directory could not be found."