diff -up openmpi-1.5.4/configure.removed openmpi-1.5.4/configure
--- openmpi-1.5.4/configure.removed	2011-08-18 07:49:03.000000000 -0600
+++ openmpi-1.5.4/configure	2011-11-17 15:13:57.461774628 -0700
@@ -146215,10 +146215,6 @@ ac_config_files="$ac_config_files opal/m
 
 
 
-ac_config_files="$ac_config_files opal/mca/backtrace/darwin/Makefile"
-
-
-
 ac_config_files="$ac_config_files opal/mca/backtrace/execinfo/Makefile"
 
 
@@ -169069,7 +169065,6 @@ do
     "opal/mca/paffinity/hwloc/hwloc/include/Makefile") CONFIG_FILES="$CONFIG_FILES opal/mca/paffinity/hwloc/hwloc/include/Makefile" ;;
     "opal/mca/paffinity/hwloc/hwloc/src/Makefile") CONFIG_FILES="$CONFIG_FILES opal/mca/paffinity/hwloc/hwloc/src/Makefile" ;;
     "opal/mca/backtrace/Makefile") CONFIG_FILES="$CONFIG_FILES opal/mca/backtrace/Makefile" ;;
-    "opal/mca/backtrace/darwin/Makefile") CONFIG_FILES="$CONFIG_FILES opal/mca/backtrace/darwin/Makefile" ;;
     "opal/mca/backtrace/execinfo/Makefile") CONFIG_FILES="$CONFIG_FILES opal/mca/backtrace/execinfo/Makefile" ;;
     "opal/mca/backtrace/none/Makefile") CONFIG_FILES="$CONFIG_FILES opal/mca/backtrace/none/Makefile" ;;
     "opal/mca/backtrace/printstack/Makefile") CONFIG_FILES="$CONFIG_FILES opal/mca/backtrace/printstack/Makefile" ;;
diff -up openmpi-1.5.4/Makefile.in.removed openmpi-1.5.4/Makefile.in
--- openmpi-1.5.4/Makefile.in.removed	2011-08-18 07:46:01.000000000 -0600
+++ openmpi-1.5.4/Makefile.in	2011-11-17 15:21:13.302181490 -0700
@@ -197,7 +197,6 @@ am__aclocal_m4_deps = $(top_srcdir)/ompi
 	$(top_srcdir)/config/ext_no_configure_components.m4 \
 	$(top_srcdir)/config/mca_m4_config_include.m4 \
 	$(top_srcdir)/opal/mca/backtrace/configure.m4 \
-	$(top_srcdir)/opal/mca/backtrace/darwin/configure.m4 \
 	$(top_srcdir)/opal/mca/backtrace/execinfo/configure.m4 \
 	$(top_srcdir)/opal/mca/backtrace/none/configure.m4 \
 	$(top_srcdir)/opal/mca/backtrace/printstack/configure.m4 \