diff options
Diffstat (limited to 'libbuild2/algorithm.cxx')
| -rw-r--r-- | libbuild2/algorithm.cxx | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/libbuild2/algorithm.cxx b/libbuild2/algorithm.cxx index cb63e87..8f399dd 100644 --- a/libbuild2/algorithm.cxx +++ b/libbuild2/algorithm.cxx @@ -65,7 +65,13 @@ namespace build2 if (const target* pt = pk.tk.type->search (t, pk)) return *pt; - return create_new_target (t.ctx, pk); + if (pk.tk.out->empty ()) + return create_new_target (t.ctx, pk); + + // If this is triggered, then you are probably not passing scope to + // search() (which leads to search_existing_file() being skipped). + // + fail << "no existing source file for prerequisite " << pk << endf; } pair<target&, ulock> @@ -76,7 +82,13 @@ namespace build2 if (const target* pt = pk.tk.type->search (t, pk)) return {const_cast<target&> (*pt), ulock ()}; - return create_new_target_locked (t.ctx, pk); + if (pk.tk.out->empty ()) + return create_new_target_locked (t.ctx, pk); + + // If this is triggered, then you are probably not passing scope to + // search() (which leads to search_existing_file() being skipped). + // + fail << "no existing source file for prerequisite " << pk << endf; } const target* |