Thanks for your answer.
Regarding the dependencies, it would be nice to be able to build lib2geom dependencies-free as possible.
lib2geom.3.0.dylib:
lib2geom.3.0.dylib (compatibility version 3.0.0, current version 0.0.0)
/Users/lzubiaur/gtk/inst/lib/libgsl.0.dylib (compatibility version 18.0.0, current version 18.0.0)
/Users/lzubiaur/gtk/inst/lib/libgslcblas.0.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0)
/Users/lzubiaur/gtk/inst/lib/libgtk-quartz-2.0.0.dylib (compatibility version 2401.0.0, current version 2401.21.0)
/Users/lzubiaur/gtk/inst/lib/libgdk-quartz-2.0.0.dylib (compatibility version 2401.0.0, current version 2401.21.0)
/Users/lzubiaur/gtk/inst/lib/libatk-1.0.0.dylib (compatibility version 21010.0.0, current version 21010.1.0)
/Users/lzubiaur/gtk/inst/lib/libgio-2.0.0.dylib (compatibility version 3801.0.0, current version 3801.0.0)
/Users/lzubiaur/gtk/inst/lib/libpangocairo-1.0.0.dylib (compatibility version 3601.0.0, current version 3601.0.0)
/Users/lzubiaur/gtk/inst/lib/libgdk_pixbuf-2.0.0.dylib (compatibility version 3001.0.0, current version 3001.0.0)
/Users/lzubiaur/gtk/inst/lib/libpango-1.0.0.dylib (compatibility version 3601.0.0, current version 3601.0.0)
/Users/lzubiaur/gtk/inst/lib/libcairo.2.dylib (compatibility version 11203.0.0, current version 11203.16.0)
/Users/lzubiaur/gtk/inst/lib/libgobject-2.0.0.dylib (compatibility version 3801.0.0, current version 3801.0.0)
/Users/lzubiaur/gtk/inst/lib/libglib-2.0.0.dylib (compatibility version 3801.0.0, current version 3801.0.0)
/Users/lzubiaur/gtk/inst/lib/libintl.8.dylib (compatibility version 10.0.0, current version 10.1.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 56.0.0)