tar -xf webkit-1.8.2.tar.xz configure: WARNING: unrecognized options: --enable-database checking build system type... x86_64-slackware-linux-gnu checking host system type... x86_64-slackware-linux-gnu checking for a BSD-compatible install... /usr/bin/ginstall -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /usr/bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking how to create a ustar tar archive... gnutar checking for native Win32... no checking for pkg-config... /usr/bin/pkg-config checking pkg-config is at least version 0.9.0... yes checking for perl... /usr/bin/perl checking for python... /usr/bin/python checking for bison... /usr/bin/bison checking for mv... /usr/bin/mv 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... 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(cached) yes checking whether the g++ linker (/usr/x86_64-slackware-linux/bin/ld -m elf_x86_64) supports shared libraries... yes checking dynamic linker characteristics... (cached) GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking for bash... /usr/bin/bash checking if dolt supports this host... yes, replacing libtool checking for flex... /usr/bin/flex checking for gawk... (cached) gawk checking for gperf... /usr/bin/gperf checking if g++ supports -fvisibility=hidden -fvisibility-inlines-hidden... yes checking if we have to disable C++0x compat warnings for GCC >= 4.6.0... yes checking pthread.h usability... yes checking pthread.h presence... yes checking for pthread.h... yes checking for pthread_rwlock_init in -lpthread... yes checking for jpeg_destroy_decompress in -ljpeg... yes checking for jpeglib... yes checking for libpng... yes checking the GTK+ version to use... 2.0 checking the target windowing system... x11 checking for Hildon UI extensions... no checking the GStreamer version to use... 0.10 checking for pkg-config... (cached) /usr/bin/pkg-config checking pkg-config is at least version 0.16... yes checking for GLIB - version >= 2.32.0... yes (version 2.32.4) checking for pkg-config... 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