checking for python platform... darwin
checking for python script directory... /Library/Python/2.5/site-packages
checking for python extension module directory... /Library/Python/2.5/site-packages
checking for pkg-config... /usr/local/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for GNOME_DOC_UTILS... configure: error: Package requirements (
	libxml-2.0 >= 2.6.12
	libxslt    >= 1.1.8
) were not met:

No package 'libxml-2.0' found
No package 'libxslt' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables GNOME_DOC_UTILS_CFLAGS
and GNOME_DOC_UTILS_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.