check symbols for all modes, only error if symbols exist + ENABLE_GLIBC_WORKAROUND
check symbols for all modes, only error if symbols exist + ENABLE_GLIBC_WORKAROUND

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