require 'mkmf' raise 'gdal-config not found.' if `which gdal-config`.empty? dir_config 'gdal', `gdal-config --cflags`.split(' ')[0].gsub(/-I/, ''), `gdal-config --libs`.split(' ')[0].gsub(/-L/, '') have_library 'gdal' or raise 'libgdal not found' pkg_config 'gdal' $libs = append_library $libs, 'gdal' create_makefile 'gdal-ruby/gdal'