Implement automatic subproject discovery

Currently we only capture their directories without the project
names. We will need project names when we hook import search into
this.

1 files changed, 7 insertions, 0 deletions

diff --git a/build/file b/build/file
index 8e96f4a..b786cf7 100644
--- a/build/file
+++ b/build/file
@@ -13,6 +13,13 @@ namespace build
   class scope;
   class location;
 
+  extern const dir_path build_dir;     // build
+  extern const dir_path bootstrap_dir; // build/bootstrap
+
+  extern const path root_file;         // build/root.build
+  extern const path bootstrap_file;    // build/bootstrap.build
+  extern const path src_root_file;     // build/bootstrap/src-root.build
+
   bool
   is_src_root (const dir_path&);