--- a/spatialite.pc.in	2014-10-28 12:53:37.868503600 +0300
+++ b/spatialite.pc.in	2021-04-10 16:12:48.157849500 +0300
@@ -8,4 +8,5 @@
 Description: Spatial SQL database engine based on SQLite
 Version: @VERSION@
 Libs: -L${libdir} -lspatialite @LIBS@ @LIBXML2_LIBS@ -lm
+Libs.private: -liconv -lz -lm
 Cflags: -I${includedir}