Bugfix: Detect whether the linker accepts -zorigin before attempting to use it

Windows at least does not support -zorigin, and BSD at least used to require it for $ORIGIN

configure.ac

@@ -448,8 +448,20 @@ if test "x$with_system_libblkmaker" = "xyes"; then
 		AC_MSG_ERROR([Could not find system libblkmaker])
 	])
 else
+	save_LDFLAGS="$LDFLAGS"
+	LDFLAGS="$LDFLAGS -Wl,-zorigin"
+	origin_LDFLAGS=
+	AC_MSG_CHECKING([whether the linker recognizes the -zorigin option])
+	AC_TRY_LINK([],[],[
+		AC_MSG_RESULT([yes])
+		origin_LDFLAGS=',-zorigin'
+	],[
+		AC_MSG_RESULT([no])
+	])
+	LDFLAGS="$save_LDFLAGS"
+	
 	libblkmaker_CFLAGS='-Ilibblkmaker'
-	libblkmaker_LDFLAGS='-Llibblkmaker/.libs -Wl,-rpath,\$$ORIGIN/libblkmaker/.libs,-z,origin'
+	libblkmaker_LDFLAGS='-Llibblkmaker/.libs -Wl,-rpath,\$$ORIGIN/libblkmaker/.libs'"$origin_LDFLAGS"
 	libblkmaker_LIBS='-lblkmaker_jansson-0.1 -lblkmaker-0.1'
 	AC_CONFIG_SUBDIRS([libblkmaker])
 fi