Regenerate dependencies on code change

fixes https://github.com/official-stockfish/Stockfish/issues/3658

dependencies are now regenerated for each code change, this adds some 1s overhead in compile time, but avoids potential miscompilations or build problems.

closes https://github.com/official-stockfish/Stockfish/pull/3659

No functional change

diff --git a/src/Makefile b/src/Makefile
index c1dab86ba03d85156d1c85034710e5910df47852..901ddd9245344782469bc17395bc47587e4b04f1 100644 (file)
--- a/src/Makefile
+++ b/src/Makefile
@@ -912,7 +912,7 @@ icc-profile-use:
        EXTRACXXFLAGS='-prof_use -prof_dir ./profdir' \
        all
 
-.depend:
+.depend: $(SRCS)
        -@$(CXX) $(DEPENDFLAGS) -MM $(SRCS) > $@ 2> /dev/null
 
 -include .depend