Adding a way to clean dead build artifacts that have an entry in the build log,

but are no longer produced by the current manifest. For now adding a dedicated
"-t cleandead" option, since it should be run after reading the log; ideally
it should be part of the build config and done before to start looking for
dirty targets so that an incremental build would produce the same end result
as a clean build from scratch. But since I am not 100% sure to understand the
comment in the NinjaMain::isPathDead(), I opted to make it a tool for now to
avoid impacting users who want to keep those files.
The option name "cleandead" was selected insteadof something like "reap" to
keep the "clean" prefix.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/clean.h b/src/clean.h
index d044fb1..4c02ff6 100644
--- a/src/clean.h
+++ b/src/clean.h
@@ -20,6 +20,7 @@
 
 #include "build.h"
 #include "dyndep.h"
+#include "build_log.h"
 
 using namespace std;
 
@@ -58,6 +59,10 @@ struct Cleaner {
   /// Clean the file produced by the given @a rules.
   /// @return non-zero if an error occurs.
   int CleanRules(int rule_count, char* rules[]);
+  /// Clean the files produced by previous builds that are no longer in the
+  /// manifest.
+  /// @return non-zero if an error occurs.
+  int CleanDead(const BuildLog::Entries& entries);
 
   /// @return the number of file cleaned.
   int cleaned_files_count() const {