Well I installed freetype2 as suggested and now gnustep-back won't
make:
This is gnustep-make 2.4.0. Type 'gmake print-gnustep-make-help' for
help.
Making all in Source ...
Making all in subprojects of bundle libgnustep-back-019...
Making all for subproject gsc...
gmake[5]: Nothing to be done for `internal-subproject-compile'.
Making all for subproject x11...
gmake[5]: Nothing to be done for `internal-subproject-compile'.
Making all for subproject cairo...
gmake[5]: Nothing to be done for `internal-subproject-compile'.
Making all for bundle libgnustep-back-019...
gmake[4]: Nothing to be done for `internal-bundle-compile'.
Copying localized resources into the bundle wrapper...
Copying resources from subprojects into the bundle wrapper...
Making all in Tools ...
rm -f XGCommonFont.m
ln -s ../Source/xlib/XGCommonFont.m .
rm -f xdnd.c
ln -s ../Source/x11/xdnd.c .
Making all for tool gpbs...
Linking tool gpbs ...
/usr/pkg/lib/libcairo.so: undefined reference to
`pixman_image_set_destroy_function'
/usr/pkg/lib/libcairo.so: undefined reference to
`pixman_image_composite32'
/usr/pkg/lib/libcairo.so: undefined reference to
`pixman_image_fill_boxes'
gmake[4]: *** [obj/gpbs] Error 1
gmake[3]: *** [internal-tool-all_] Error 2
gmake[2]: *** [gpbs.all.tool.variables] Error 2
gmake[1]: *** [internal-all] Error 2
gmake: *** [internal-all] Error 2