An apparent typo has appeared in common/autoconf/compare.sh.in which I think originates from a merge changeset. It prevents clean comparisons from being done so I would like to have it fixed asap.

diff -r d8b1e1832b0e common/autoconf/compare.sh.in
--- a/common/autoconf/compare.sh.in
+++ b/common/autoconf/compare.sh.in
@@ -31,7 +31,7 @@
 
 export LEGACY_BUILD_DIR=@OPENJDK_TARGET_OS@-@OPENJDK_TARGET_CPU_LEGACY@
 
-sexport OPENJDK_TARGET_OS="@OPENJDK_TARGET_OS@"
+export OPENJDK_TARGET_OS="@OPENJDK_TARGET_OS@"
 export OPENJDK_TARGET_CPU="@OPENJDK_TARGET_CPU@"
 export OPENJDK_TARGET_CPU_LIBDIR="@OPENJDK_TARGET_CPU_LIBDIR@"
 export DEBUG_LEVEL="@DEBUG_LEVEL@"