--- configure.ac	2012-04-20 12:58:29.000000000 +0200
+++ configure_new.ac	2013-07-21 18:26:17.513904607 +0200
@@ -209,6 +209,10 @@
 # optional libraries.
 AC_PROG_CC
 AC_PROG_CPP
+AN_MAKEVAR([AR], [AC_PROG_AR])
+AN_PROGRAM([ar], [AC_PROG_AR])
+AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL(AR, ar, :)])
+AC_PROG_AR
 
 # added -Wall for gcc, what about for others?
 if test "x$GCC" = "xyes"; then
--- libs/Makefile.in	2012-04-20 13:03:55.000000000 +0200
+++ libs/Makefile_new.in	2013-07-21 18:27:17.443992505 +0200
@@ -48,7 +48,7 @@
 CONFIG_CLEAN_FILES =
 CONFIG_CLEAN_VPATH_FILES =
 LIBRARIES = $(noinst_LIBRARIES)
-AR = ar
+AR = @AR@
 ARFLAGS = cru
 libfvwm_a_AR = $(AR) $(ARFLAGS)
 libfvwm_a_DEPENDENCIES = @LIBOBJS@ @ALLOCA@
--- modules/FvwmScript/Widgets/Makefile.in	2012-04-20 13:03:56.000000000 +0200
+++ modules/FvwmScript/Widgets/Makefile_new.in	2013-07-21 18:27:23.844001892 +0200
@@ -46,7 +46,7 @@
 CONFIG_CLEAN_FILES =
 CONFIG_CLEAN_VPATH_FILES =
 LIBRARIES = $(noinst_LIBRARIES)
-AR = ar
+AR = @AR@
 ARFLAGS = cru
 libWidgets_a_AR = $(AR) $(ARFLAGS)
 libWidgets_a_LIBADD =