Index: loader/Makefile.in
--- loader/Makefile.in.orig	2016-06-04 20:10:50.000000000 +0200
+++ loader/Makefile.in	2017-09-02 23:56:50.944607000 +0200
@@ -38,7 +38,7 @@
 PGSQL_FE_LDFLAGS=@PGSQL_FE_LDFLAGS@
 
 # iconv flags
-ICONV_LDFLAGS=@ICONV_LDFLAGS@
+ICONV_LDFLAGS=@ICONV_LDFLAGS@ -lstdc++
 ICONV_CFLAGS=@ICONV_CFLAGS@
 
 # liblwgeom
Index: configure.ac
--- configure.ac.orig	2017-10-31 16:15:03.000000000 +0100
+++ configure.ac	2017-11-16 09:32:53.161411000 +0100
@@ -677,7 +677,7 @@
 fi
 
 dnl Extract the linker and include flags
-GEOS_LDFLAGS=`$GEOSCONFIG --ldflags`
+GEOS_LDFLAGS=`$GEOSCONFIG --cclibs`
 GEOS_CPPFLAGS=-I`$GEOSCONFIG --includes`
 AC_SUBST([GEOS_LDFLAGS])
 AC_SUBST([GEOS_CPPFLAGS])