diff --git a/libitm/testsuite/Makefile.am b/libitm/testsuite/Makefile.am
index 41cfbc46e4b..16f82bdf691 100644
--- a/libitm/testsuite/Makefile.am
+++ b/libitm/testsuite/Makefile.am
@@ -11,3 +11,9 @@ EXPECT = $(shell if test -f $(top_builddir)/../expect/expect; then \
 _RUNTEST = $(shell if test -f $(top_srcdir)/../dejagnu/runtest; then \
 	     echo $(top_srcdir)/../dejagnu/runtest; else echo runtest; fi)
 RUNTEST = $(_RUNTEST) $(AM_RUNTESTFLAGS)
+
+EXTRA_DEJAGNU_SITE_CONFIG = extra.exp
+
+extra.exp:
+	echo 'set BUILD_CC "$(CC)"' > $@.tmp
+	mv $@.tmp $@
diff --git a/libitm/testsuite/Makefile.in b/libitm/testsuite/Makefile.in
index 991f02c0b3b..fa331cabfc4 100644
--- a/libitm/testsuite/Makefile.in
+++ b/libitm/testsuite/Makefile.in
@@ -285,6 +285,7 @@ _RUNTEST = $(shell if test -f $(top_srcdir)/../dejagnu/runtest; then \
 	     echo $(top_srcdir)/../dejagnu/runtest; else echo runtest; fi)
 
 RUNTEST = $(_RUNTEST) $(AM_RUNTESTFLAGS)
+EXTRA_DEJAGNU_SITE_CONFIG = extra.exp
 all: all-am
 
 .SUFFIXES:
@@ -492,6 +493,10 @@ uninstall-am:
 .PRECIOUS: Makefile
 
 
+extra.exp:
+	echo 'set BUILD_CC "$(CC)"' > $@.tmp
+	mv $@.tmp $@
+
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT:
diff --git a/libitm/testsuite/lib/libitm.exp b/libitm/testsuite/lib/libitm.exp
index b3d247b9f98..47c2cd55dac 100644
--- a/libitm/testsuite/lib/libitm.exp
+++ b/libitm/testsuite/lib/libitm.exp
@@ -77,6 +77,7 @@ proc libitm_init { args } {
     global ALWAYS_CFLAGS
     global CFLAGS
     global TOOL_EXECUTABLE TOOL_OPTIONS
+    global BUILD_CC
     global GCC_UNDER_TEST
     global TESTING_IN_BUILD_TREE
     global target_triplet
@@ -92,6 +93,8 @@ proc libitm_init { args } {
     if ![info exists GCC_UNDER_TEST] then {
 	if [info exists TOOL_EXECUTABLE] {
 	    set GCC_UNDER_TEST $TOOL_EXECUTABLE
+	} elseif [info exists BUILD_CC] {
+	    set GCC_UNDER_TEST $BUILD_CC
 	} else {
 	    set GCC_UNDER_TEST "[find_gcc]"
 	}