CMake Warning at Source/cmake/FindGIDocgen.cmake:101 (message):
  Could not execute /usr/bin/gi-docgen.  This typically signals an incorrect
  installation.  You may want to run it by hand for troubleshooting, the
  re-run CMake again.

Call Stack (most recent call first):
  Source/cmake/WebKitFindPackage.cmake:105 (_find_package)
  Source/cmake/OptionsGTK.cmake:325 (find_package)
  Source/cmake/WebKitCommon.cmake:227 (include)
  CMakeLists.txt:25 (include)


-- Could NOT find GIDocgen (missing: GIDocgen_VERSION) (found version "")
CMake Error at Source/cmake/OptionsGTK.cmake:327 (message):
  ENABLE_INTROSPECTION is needed for gi-docgen.
Call Stack (most recent call first):
  Source/cmake/WebKitCommon.cmake:227 (include)
  CMakeLists.txt:25 (include)


-- Configuring incomplete, errors occurred!
See also "/var/tmp/portage/net-libs/webkit-gtk-2.38.6/work/webkit-gtk-2.38.6_build/CMakeFiles/CMakeOutput.log".
See also "/var/tmp/portage/net-libs/webkit-gtk-2.38.6/work/webkit-gtk-2.38.6_build/CMakeFiles/CMakeError.log".
 * ERROR: net-libs/webkit-gtk-2.38.6::gnome-kit failed (configure phase):
 *   cmake failed
 * 
 * Call stack:
 *     ebuild.sh, line   93:  Called src_configure
 *   environment, line 4346:  Called cmake_src_configure
 *   environment, line 1844:  Called die
 * The specific snippet of code:
 *       "${CMAKE_BINARY}" "${cmakeargs[@]}" "${CMAKE_USE_DIR}" || die "cmake failed";
 *