diff options
Diffstat (limited to 'remake.c')
| -rw-r--r-- | remake.c | 19 |
1 files changed, 19 insertions, 0 deletions
@@ -106,6 +106,9 @@ update_goal_chain (goals, makefiles) job_slots = 1; #endif + /* All files start with the considered bit 0, so the global value is 1. */ + considered = 1; + /* Update all the goals until they are all finished. */ while (goals != 0) @@ -247,6 +250,11 @@ update_goal_chain (goals, makefiles) g = g->next; } } + + /* If we reached the end of the dependency graph toggle the considered + flag for the next pass. */ + if (g == 0) + considered = !considered; } if (makefiles) @@ -312,6 +320,17 @@ update_file (file, depth) register int status = 0; register struct file *f; + /* Prune the dependency graph: if we've already been here on _this_ pass + through the dependency graph, we don't have to go any further. We won't + reap_children until we start the next pass, so no state change is + possible below here until then. */ + if (file->considered == considered) + { + DEBUGPR ("Pruning file `%s'.\n"); + return 0; + } + file->considered = considered; + for (f = file->double_colon ? file->double_colon : file; f != 0; f = f->prev) { status |= update_file_1 (f, depth); |