From: Petr Salinger <Petr.Salinger@seznam.cz>
Subject: fix FTBFS on kfreebsd-*

--- a/tclconfig/tcl.m4
+++ b/tclconfig/tcl.m4
@@ -1440,7 +1440,7 @@
 	        fi
 	    fi
 	    ;;
-	Linux*)
+	Linux*|GNU*)
 	    SHLIB_CFLAGS="-fPIC"
 	    SHLIB_LD_LIBS='${LIBS}'
 	    SHLIB_SUFFIX=".so"
