F36 Change: MinGW environment and toolchain update (System-Wide Change proposal)

[Ben Cotton]

https://fedoraproject.org/wiki/Changes/F36MingwDebugLocation

== Summary ==
Store debug files of mingw PE binaries below /usr/lib/debug.

== Owner ==
* Name: [[User:smani|Sandro Mani]]
* Email: manisandro(a)gmail.com


== Detailed Description ==

Native debug symbols are already stored below /usr/lib/debug. This
change modifies `mingw-find-debuginfo.sh`, part of mingw-filesystem,
to do the same.

== Benefit to Fedora ==

Besides alignment with debuginfo symbols of native packages, this
avoids an easy to hit issue for mingw packagers where .debug files end
up in the main package, i.e.

`%files -n mingw64-libfoo`

`%{mingw64_libdir}/plugindir/`

where `%{mingw64_libdir}/plugindir/` contains both say
`libfooplugin.dll` as well as `libfooplugin.dll.debug`.

== Scope ==
* Proposal owners:
`mingw-find-debuginfo.sh` will be updated to store debug symbols below
`/usr/lib/debug`, as follows:

[https://src.fedoraproject.org/fork/smani/rpms/mingw-filesystem/c/3304db32...
Store debug files below /usr/lib/debug]

* Other developers:
`%exclude`s of `*.debug` files can be dropped from spec files.

* Release engineering: Impact check [https://pagure.io/releng/issue/10257]
* Release engineering: Mass rebuild requested
* Policies and guidelines: No policies need to be changed

== Upgrade/compatibility impact ==
No impact

== How To Test ==
Verify that `*.debug` files are stored below `/usr/lib/debug`.

== User Experience ==
`*.debug` files are stored below `/usr/lib/debug`.

== Dependencies ==
None

== Contingency Plan ==
* Contingency mechanism: Revert to older versions of environment /
toolchain, mass rebuild mingw packages again
* Contingency deadline: Before release
* Blocks release? Yes
* Blocks product? No

== Release Notes ==
From Fedora 36 onwards, debug symbols for mingw binaries will be
stored below /usr/lib/debug.


-- 
Ben Cotton
He / Him / His
Fedora Program Manager
Red Hat
TZ=America/Indiana/Indianapolis

[Richard W.M. Jones]

On Mon, Aug 09, 2021 at 02:06:44PM -0400, Ben Cotton wrote:
>  https://fedoraproject.org/wiki/Changes/F36MingwDebugLocation
>  
>  == Summary ==
>  Store debug files of mingw PE binaries below /usr/lib/debug.
>  
>  == Owner ==
>  * Name: [[User:smani|Sandro Mani]]
>  * Email: manisandro(a)gmail.com
>  
>  
>  == Detailed Description ==
>  
>  Native debug symbols are already stored below /usr/lib/debug. This
>  change modifies `mingw-find-debuginfo.sh`, part of mingw-filesystem,
>  to do the same.
>  
>  == Benefit to Fedora ==
>  
>  Besides alignment with debuginfo symbols of native packages, this
>  avoids an easy to hit issue for mingw packagers where .debug files end
>  up in the main package, i.e.
>  
>  `%files -n mingw64-libfoo`
>  
>  `%{mingw64_libdir}/plugindir/`
>  
>  where `%{mingw64_libdir}/plugindir/` contains both say
>  `libfooplugin.dll` as well as `libfooplugin.dll.debug`.
>  
>  == Scope ==
>  * Proposal owners:
>  `mingw-find-debuginfo.sh` will be updated to store debug symbols below
>  `/usr/lib/debug`, as follows:
>  
>
> [https://src.fedoraproject.org/fork/smani/rpms/mingw-filesystem/c/3304db32...
>  Store debug files below /usr/lib/debug]
>  
>  * Other developers:
>  `%exclude`s of `*.debug` files can be dropped from spec files.
>  
>  * Release engineering: Impact check [https://pagure.io/releng/issue/10257]
>  * Release engineering: Mass rebuild requested
>  * Policies and guidelines: No policies need to be changed
>  
>  == Upgrade/compatibility impact ==
>  No impact
>  
>  == How To Test ==
>  Verify that `*.debug` files are stored below `/usr/lib/debug`.
>  
>  == User Experience ==
>  `*.debug` files are stored below `/usr/lib/debug`.
>  
>  == Dependencies ==
>  None
>  
>  == Contingency Plan ==
>  * Contingency mechanism: Revert to older versions of environment /
>  toolchain, mass rebuild mingw packages again
>  * Contingency deadline: Before release
>  * Blocks release? Yes
>  * Blocks product? No
>  
>  == Release Notes ==
>  From Fedora 36 onwards, debug symbols for mingw binaries will be
>  stored below /usr/lib/debug. 
Looks generally sensible.

Out of interest (not an objection) do any Fedora tools actually
consume these debug symbols?  For example is there a way to use them
from Wine?

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
Fedora Windows cross-compiler. Compile Windows programs, test, and
build Windows installers. Over 100 libraries supported.
http://fedoraproject.org/wiki/MinGW

[Sandro Mani]

>  Looks generally sensible.
>
>  Out of interest (not an objection) do any Fedora tools actually
>  consume these debug symbols?  For example is there a way to use them
>  from Wine? 
I usually deploy gdb.exe from mingw-gdb, place the .debug files next to 
the respective binaries, and then debug on the target system directly. I 
guess the same could also work with wine, though I vaguely remember 
having difficulties getting gdb to run within wine in the past.

Sandro

F36 Change: MinGW debug symbols location change (not MinGW environment and toolchain update) (System-Wide Change proposal)

[Sandro Mani]

I clearly submitted this too late at night and forgot to update the 
title, a more appropriate one for this change would be "MinGW debug 
symbols location change".

On 09.08.21 20:06, Ben Cotton wrote:
> https://fedoraproject.org/wiki/Changes/F36MingwDebugLocation
>
> == Summary ==
> Store debug files of mingw PE binaries below /usr/lib/debug.
>
> == Owner ==
> * Name: [[User:smani|Sandro Mani]]
> * Email: manisandro(a)gmail.com
>
>
> == Detailed Description ==
>
> Native debug symbols are already stored below /usr/lib/debug. This
> change modifies `mingw-find-debuginfo.sh`, part of mingw-filesystem,
> to do the same.
>
> == Benefit to Fedora ==
>
> Besides alignment with debuginfo symbols of native packages, this
> avoids an easy to hit issue for mingw packagers where .debug files end
> up in the main package, i.e.
>
> `%files -n mingw64-libfoo`
>
> `%{mingw64_libdir}/plugindir/`
>
> where `%{mingw64_libdir}/plugindir/` contains both say
> `libfooplugin.dll` as well as `libfooplugin.dll.debug`.
>
> == Scope ==
> * Proposal owners:
> `mingw-find-debuginfo.sh` will be updated to store debug symbols below
> `/usr/lib/debug`, as follows:
>
>
[https://src.fedoraproject.org/fork/smani/rpms/mingw-filesystem/c/3304db32...
> Store debug files below /usr/lib/debug]
>
> * Other developers:
> `%exclude`s of `*.debug` files can be dropped from spec files.
>
> * Release engineering: Impact check [https://pagure.io/releng/issue/10257]
> * Release engineering: Mass rebuild requested
> * Policies and guidelines: No policies need to be changed
>
> == Upgrade/compatibility impact ==
> No impact
>
> == How To Test ==
> Verify that `*.debug` files are stored below `/usr/lib/debug`.
>
> == User Experience ==
> `*.debug` files are stored below `/usr/lib/debug`.
>
> == Dependencies ==
> None
>
> == Contingency Plan ==
> * Contingency mechanism: Revert to older versions of environment /
> toolchain, mass rebuild mingw packages again
> * Contingency deadline: Before release
> * Blocks release? Yes
> * Blocks product? No
>
> == Release Notes ==
>  From Fedora 36 onwards, debug symbols for mingw binaries will be
> stored below /usr/lib/debug.
>
>