Add a PROFILE mode

* Makefile: Change FOOFLAGS defaults to appropriate values when
  $(PROFILE) is defined.
* rootdir.c: Add an "exit" file, which causes exit to be called
  when looked up, so that profiling data can be written to disk.

1 files changed, 9 insertions, 0 deletions

diff --git a/rootdir.c b/rootdir.c
index c6ddd87..204bc02 100644
--- a/rootdir.c
+++ b/rootdir.c
@@ -422,6 +422,15 @@ static const struct procfs_dir_entry rootdir_entries[] = {
       .cleanup_contents = procfs_cleanup_contents_with_free,
     },
   },
+#ifdef PROFILE
+  /* In order to get a usable gmon.out file, we must apparently use exit(). */
+  {
+    .name = "exit",
+    .ops = {
+      .make_node = exit,
+    },
+  },
+#endif
   {}
 };