As reported at https://bugs.gentoo.org/show_bug.cgi?id=420591. The Gentoo ebuild runs eautoreconf (emulates autoreconf) on the sources before building. With newer versions of automake run on the sources, 'mkdir_p' isn't set, but it's still used in the makefile. The result is the following error: make[2]: Leaving directory `/var/tmp/portage/net-libs/webkit-gtk-1.8.1-r301/work/webkit-1.8.1' touch stamp-po ./.deps/DerivedSources make[1]: ./.deps/DerivedSources: Command not found make[1]: *** [all-local] Error 127 make[1]: Leaving directory `/var/tmp/portage/net-libs/webkit-gtk-1.8.1-r301/work/webkit-1.8.1' make: *** [all] Error 2 I submitted a patch to the Gentoo bug tracker changing all instances of 'mkdir_p' to 'MKDIR_P' in various GNUmakefile.am files, fixing the issue.
It should have been fixed with changeset 120012 http://trac.webkit.org/changeset/120012 Would you mind trying with latest WebKit trunk ?
It's fixed in trunk. I'm not sure why the previous report didn't show up when I was searching. Thanks.
*** This bug has been marked as a duplicate of bug 88790 ***