gpg-error is needed on c flags as well on solaris

libs/iksemel/configure.ac

@@ -83,7 +83,7 @@ AC_ARG_ENABLE(64,
 
 if test "x${ax_cv_c_compiler_vendor}"  =  "xsun" ; then
     if test "${enable_64}" = "yes"; then
-        CFLAGS="$CFLAGS -m64"
+        CFLAGS="$CFLAGS -m64 -lgpg-error"
         CXXFLAGS="$CXXFLAGS -m64 -lgpg-error"
     fi
 fi