[Bug other/103331] New: There should be a rule to make build.log in the top-level Makefile

[Bug other/103331] New: There should be a rule to make build.log in the top-level Makefile

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103331

            Bug ID: 103331
           Summary: There should be a rule to make build.log in the
                    top-level Makefile
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: build
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: egallager at gcc dot gnu.org
  Target Milestone: ---

In the top-level Makefile, there's a target warning.log that depends on a
build.log file, but trying to do `make warning.log` results in:
make: *** No rule to make target `build.log', needed by `warning.log'.  Stop.

All files depended on by current Makefile targets should have rules to build
them from the Makefiles themselves, IMO.

[Bug other/103331] There should be a rule to make build.log in the top-level Makefile

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103331

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |neroden at gcc dot gnu.org

--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
git blame says the dependency has been there since Nathanael Nerode first
created Makefile.tpl back in g:95ddd785 in 2002...

[Bug other/103331] There should be a rule to make build.log in the top-level Makefile

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103331

--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
I'm assuming that the way that build.log is normally generated is by just
appending `| tee build.log` to the end of a normal `make` command?

[Bug other/103331] There should be a rule to make build.log in the top-level Makefile

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103331

--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #2)
> I'm assuming that the way that build.log is normally generated is by just
> appending `| tee build.log` to the end of a normal `make` command?

hm, doing it that way results in an empty `warning.log` when doing `make
warning.log` to extract the warnings from `build.log`, even when warnings are
printed during the actual build output; maybe I need to throw a `2>&1` in
there...