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-rw-r--r--src/config.in4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/config.in b/src/config.in
index 735f60efebc..e479029a70f 100644
--- a/src/config.in
+++ b/src/config.in
@@ -87,6 +87,10 @@ and this notice must be preserved on all copies. */
#undef HAVE_GETHOSTNAME
#undef HAVE_DUP2
#undef TM_IN_SYS_TIME
+#undef STDC_HEADERS
+#undef TIME_WITH_SYS_TIME
+#undef CRAY_STACKSEG_END
+#undef STACK_DIRECTION
#undef const
/* If using GNU, then support inline function declarations. */