Otherwise - checking dynamic linker characteristics... GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking for x86_64-pc-linux-gnu-pkg-config... no checking for pkg-config... no checking for LIBWPS... no configure: error: in `/tmp/portage/app-text/libwps-0.2.3/work/libwps-0.2.3': configure: error: The pkg-config script could not be found or is too old. Make sure it is in your PATH or set the PKG_CONFIG environment variable to the full path to pkg-config.
Fixed in main tree.