I'm trying to build webgktgtk-2.12.0 on a 64 bit, slackware box. I can build and install on my 32 bit machines; however, running make install fails with: make[2]: Leaving directory `/home/ronis/Project/notar/GNOME/garnome/platform/webkitgtk+/work/main.d/webkitgtk-2.12.0/build' make[2]: Entering directory `/home/ronis/Project/notar/GNOME/garnome/platform/webkitgtk+/work/main.d/webkitgtk-2.12.0/build' [ 96%] Generating ../../WebKit2-4.0.gir Package pixman-1 was not found in the pkg-config search path. Perhaps you should add the directory containing `pixman-1.pc' to the PKG_CONFIG_PATH environment variable Package 'pixman-1', required by 'cairo', not found /opt/garnome-3.20/lib/gio/modules/libgioremote-volume-monitor.so: undefined symbol: g_vfs_monitor_implementation_free Failed to load module: /opt/garnome-3.20/lib/gio/modules/libgioremote-volume-monitor.so In file included from /tmp/g-ir-cpp-kxodgpbt.c:4:0: /home/ronis/Project/notar/GNOME/garnome/platform/webkitgtk+/work/main.d/webkitgtk-2.12.0/build/DerivedSources/webkit2gtk/webkit2/WebKitEnumTypes.h:30:25: fatal error: glib-object.h: No such file or directory compilation terminated. Traceback (most recent call last): File "/opt/garnome-3.20/lib/python3.5/distutils/unixccompiler.py", line 105, in preprocess self.spawn(pp_args) File "/opt/garnome-3.20/lib/python3.5/distutils/ccompiler.py", line 909, in spawn spawn(cmd, dry_run=self.dry_run) File "/opt/garnome-3.20/lib/python3.5/distutils/spawn.py", line 36, in spawn _spawn_posix(cmd, search_path, dry_run=dry_run) File "/opt/garnome-3.20/lib/python3.5/distutils/spawn.py", line 159, in _spawn_posix % (cmd, exit_status)) distutils.errors.DistutilsExecError: command '/usr/bin/gcc' failed with exit status 1 During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/opt/garnome-3.20/bin/g-ir-scanner", line 66, in <module> sys.exit(scanner_main(sys.argv)) File "/opt/garnome-3.20/lib/gobject-introspection/giscanner/scannermain.py", line 535, in scanner_main ss = create_source_scanner(options, args) File "/opt/garnome-3.20/lib/gobject-introspection/giscanner/scannermain.py", line 443, in create_source_scanner ss.parse_files(filenames) File "/opt/garnome-3.20/lib/gobject-introspection/giscanner/sourcescanner.py", line 262, in parse_files self._parse(headers) File "/opt/garnome-3.20/lib/gobject-introspection/giscanner/sourcescanner.py", line 305, in _parse self._cpp_options) File "/opt/garnome-3.20/lib/gobject-introspection/giscanner/ccompiler.py", line 199, in preprocess extra_postargs=extra_postargs) File "/opt/garnome-3.20/lib/python3.5/distutils/unixccompiler.py", line 107, in preprocess raise CompileError(msg) distutils.errors.CompileError: command '/usr/bin/gcc' failed with exit status 1 make[2]: *** [WebKit2-4.0.gir] Error 1 make[2]: Leaving directory `/home/ronis/Project/notar/GNOME/garnome/platform/webkitgtk+/work/main.d/webkitgtk-2.12.0/build' make[1]: *** [Source/WebKit2/CMakeFiles/WebKit2-4-gir.dir/all] Error 2 make[1]: Leaving directory `/home/ronis/Project/notar/GNOME/garnome/platform/webkitgtk+/work/main.d/webkitgtk-2.12.0/build' make: *** [all] Error 2 make: Leaving directory `/home/ronis/Project/notar/GNOME/garnome/platform/webkitgtk+/work/main.d/webkitgtk-2.12.0/build' make: *** [install-work/main.d/webkitgtk-2.12.0/Makefile] Error 2 make: Target `install' not remade because of errors. Compilation exited abnormally with code 2 at Fri Apr 8 13:16:56 Couple of strange things: 1) the complaints about pkg-config don't weem warrented as the path seems OK and the packages are installed. In particular pixman-1 is there and hasnt changed in a long time 2) The introspection crash happens wheter or not I pass the --disable-introspection flag to configure (this run had it set).