diff options
| author | Boris Kolpackov <boris@codesynthesis.com> | 2018-10-19 09:00:33 +0200 |
|---|---|---|
| committer | Boris Kolpackov <boris@codesynthesis.com> | 2018-10-19 09:00:33 +0200 |
| commit | d7ebc7cf20ed05c4a7e437b407e75f0dbd747c9c (patch) | |
| tree | d056372395cef85156340d9b77dc60e915a7cc42 | |
| parent | 4a0568b8b884d954944c89b3c52b756a3d6c7dc9 (diff) | |
Improve inconsistent compiler behavior diagnostics
| -rw-r--r-- | build2/cc/compile-rule.cxx | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/build2/cc/compile-rule.cxx b/build2/cc/compile-rule.cxx index 7a50170..51a30ae 100644 --- a/build2/cc/compile-rule.cxx +++ b/build2/cc/compile-rule.cxx @@ -2824,27 +2824,33 @@ namespace build2 l6 ([&]{trace << "trying again without generated headers";}); else { - // In some pathological situations (e.g., we are out of disk - // space) we may end up switching back and forth indefinitely - // without making any headway. So we use skip_count to track - // our progress. + // In some pathological situations we may end up switching + // back and forth indefinitely without making any headway. So + // we use skip_count to track our progress. + // + // Examples that have been encountered so far: + // + // - Running out of disk space. + // + // - Using __COUNTER__ in #if which is incompatible with the + // GCC's -fdirectives-only mode. + // + // So let's show the yo-yo'ing command lines and ask the user + // to investigate. // if (force_gen_skip && *force_gen_skip == skip_count) { diag_record dr (fail); - dr << "inconsistent " << x_lang << " compiler behavior"; + dr << "inconsistent " << x_lang << " compiler behavior" << + info << "run the following two commands to investigate"; - // Show the yo-yo'ing command lines. - // dr << info; print_process (dr, args.data ()); // No pipes. init_args ((gen = true)); dr << info << ""; print_process (dr, args.data ()); // No pipes. - - dr << info << "perhaps you are running out of disk space?"; } restart = true; |