diff --git a/c/src/lib/libcpu/powerpc/ChangeLog b/c/src/lib/libcpu/powerpc/ChangeLog
index fb92f1377f..c660037fb7 100644
--- a/c/src/lib/libcpu/powerpc/ChangeLog
+++ b/c/src/lib/libcpu/powerpc/ChangeLog
@@ -1,3 +1,10 @@
+2007-12-11	Till Straumann <strauman@slac.stanford.edu>
+
+	* Makefile.am, new-exceptions/bspsupport/README:
+	provide new irq_bspsupport.rel which was
+	split out of exc_bspsupport.rel to provide finer-grained
+	control over what BSPs want to use.
+
 2007-12-11	Till Straumann <strauman@slac.stanford.edu>
 
 	* new-exceptions/bspsupport/irq.c: enable/disable
diff --git a/c/src/lib/libcpu/powerpc/Makefile.am b/c/src/lib/libcpu/powerpc/Makefile.am
index 617ada8c14..cf3ab7c5a2 100644
--- a/c/src/lib/libcpu/powerpc/Makefile.am
+++ b/c/src/lib/libcpu/powerpc/Makefile.am
@@ -47,10 +47,16 @@ noinst_PROGRAMS += new-exceptions/exc_bspsupport.rel
 new_exceptions_exc_bspsupport_rel_SOURCES = \
     new-exceptions/bspsupport/ppc_exc.S \
     new-exceptions/bspsupport/ppc_exc_hdl.c \
-    new-exceptions/bspsupport/irq.c \
-    new-exceptions/bspsupport/vectors_init.c
+    new-exceptions/bspsupport/ppc_exc_test.c \
+    new-exceptions/bspsupport/vectors_init.c 
 new_exceptions_exc_bspsupport_rel_CPPFLAGS = $(AM_CPPFLAGS)
 new_exceptions_exc_bspsupport_rel_LDFLAGS = $(RTEMS_RELLDFLAGS)
+
+noinst_PROGRAMS += new-exceptions/irq_bspsupport.rel
+
+new_exceptions_irq_bspsupport_rel_SOURCES = new-exceptions/bspsupport/irq.c
+new_exceptions_irq_bspsupport_rel_CPPFLAGS = $(AM_CPPFLAGS)
+new_exceptions_irq_bspsupport_rel_LDFLAGS = $(RTEMS_RELLDFLAGS)
 endif
 endif
 EXTRA_DIST += new-exceptions/bspsupport/vectors.h
diff --git a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/README b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/README
index 2959880692..7fd830bd1e 100644
--- a/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/README
+++ b/c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/README
@@ -239,9 +239,13 @@ USAGE
 		- add
 
 		    ../../../libcpu/@RTEMS_CPU@/@exceptions@/exc_bspsupport.rel \
+		    ../../../libcpu/@RTEMS_CPU@/@exceptions@/irq_bspsupport.rel \
 
 		  to 'libbsp_a_LIBADD'
 
+		  (irq.c is in a separate '.rel' so that you can get support
+		  for exceptions only).
+
 CAVEATS
 =======