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-rw-r--r--doc/man/scons.16
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/man/scons.1 b/doc/man/scons.1
index 3fa9e0ce..62129ad8 100644
--- a/doc/man/scons.1
+++ b/doc/man/scons.1
@@ -601,6 +601,12 @@ have been compiled with optimization
files).
.TP
+--debug=duplicate
+Print a line for each unlink/relink (or copy) of a variant file from
+its source file. Includes debugging info for unlinking stale variant
+files, as well as unlinking old targets before building them.
+
+.TP
--debug=dtree
A synonym for the newer
.B --tree=derived