X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftool.h;h=c49b4c473257b0ff06f8e2e07cca2a4fbc444b54;hb=bc6d4c540e7132c829dd558ca9d8acfbde7d71e1;hp=fa18ba8dca338d57c5e37c2c8fe42269f61ef1b1;hpb=5ccb12706ac217a7f0b07e4c73ca870bb70fabdf;p=builder.git

diff --git a/source/tool.h b/source/tool.h
index fa18ba8..c49b4c4 100644
--- a/source/tool.h
+++ b/source/tool.h
@@ -106,7 +106,7 @@ public:
 	null if the tool does not want to handle installing in a special way. */
 	virtual Target *create_install(Target &) const { return 0; }
 
-	virtual std::string create_build_signature(const BuildInfo &) const { return std::string(); }
+	virtual std::string create_build_signature(const BuildInfo &) const;
 
 	void prepare();