Add the kernel tree's git revision to the hash

To better support kernel developers who work out of a single source
tree, this adds the git HEAD revision to our caching hash.

1 files changed, 1 insertions, 0 deletions

diff --git a/util.h b/util.h
index 2884e021..d385be02 100644
--- a/util.h
+++ b/util.h
@@ -12,6 +12,7 @@ void tokenize(const std::string& str, std::vector<std::string>& tokens,
 	      const std::string& delimiters);
 std::string find_executable(const std::string& name);
 const std::string cmdstr_quoted(const std::string& cmd);
+std::string git_revision(const std::string& path);
 
 
 // stringification generics