Index: /issm/trunk-jpl/externalpackages/gdal/install.sh
===================================================================
--- /issm/trunk-jpl/externalpackages/gdal/install.sh	(revision 12717)
+++ /issm/trunk-jpl/externalpackages/gdal/install.sh	(revision 12718)
@@ -22,4 +22,5 @@
 	--prefix="$ISSM_DIR/externalpackages/gdal/install" \
 	--without-python \
+	--without-png \
 	--with-netcdf=no \
 	--with-jasper=no \