add '-fno-omit-frame-pointer' to sanitize address builds for nicer stack traces in error messages.
add '-fno-omit-frame-pointer' to sanitize address builds for nicer stack traces in error messages.

lightmare/mapnik,tomhughes/mapnik,mapnik/mapnik,tomhughes/mapnik,mapnik/mapnik,lightmare/mapnik,naturalatlas/mapnik,tomhughes/mapnik,lightmare/mapnik,tomhughes/mapnik,naturalatlas/mapnik,mapnik/mapnik,lightmare/mapnik,mapnik/mapnik,naturalatlas/mapnik,naturalatlas/mapnik