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-rw-r--r--make.texinfo5
1 files changed, 5 insertions, 0 deletions
diff --git a/make.texinfo b/make.texinfo
index fcbd5c7..bb74eb9 100644
--- a/make.texinfo
+++ b/make.texinfo
@@ -2543,6 +2543,11 @@ main.o : main.c defs.h
Thus you no longer have to write all those rules yourself.
The compiler will do it for you.
+Note that such a dependency constitutes mentioning @file{main.o} in a
+makefile, so it can never be considered an intermediate file by implicit
+rule search. This means that @code{make} won't ever remove the file
+after using it; @pxref{Chained Rules, ,Chains of Implicit Rules}.
+
@cindex @code{make depend}
With old @code{make} programs, it was traditional practice to use this
compiler feature to generate dependencies on demand with a command like