r15423: Correct comparison logic so that libunwind can be correctly detected.

diff --git a/source/configure.in b/source/configure.in
index cf079800fbd7524a9a806824555d207a6ef0c1c7..bb4cf82f3577cda22e6218a3084e15a61318a837 100644 (file)
--- a/source/configure.in
+++ b/source/configure.in
@@ -1256,7 +1256,7 @@ AC_CHECK_LIB(exc, trace_back_stack)
 # any of them.
 AC_MSG_CHECKING([for libunwind])
 save_LIBS=$LIBS
-if test x"$UNAME_P" != xunknown ; then
+if test x"$UNAME_P" = xunknown ; then
     # This probably won't link without the platform-specific libunwind.
     LIBS="$LIBS -lunwind"
 else