Can't get access to the svg renderer

[djakk]

Despite I've compiled mapnik with SVG_RENDERER = True in the file config.py, I can't get access to the svg renderer : in python, mapnik.has_svg_renderer() returns False, an im.save('bug.svg') throws RuntimeError: unknown file type: svg and a mapnik.render_to_file(m, "image.svg") throws RuntimeError: Cairo backend not available, cannot write to format: svg.
mapnik-config --cflags does return -DSVG_RENDERER.

[djakk]

I made a mistake, I was building python-mapnik without removing the build/ directory. Now, mapnik.has_svg_renderer() returns True BUT I still get RuntimeError when I try to export a map in svg …