[PATCH v2 2/2] build: hide local symbols in shared libraries

[Thomas Monjalon]

09/03/2022 11:58, Kevin Traynor:
> Hi Thomas,
> 
> On 08/03/2022 14:24, Thomas Monjalon wrote:
> > The symbols which are not listed in the version script
> > are exported by default.
> > Adding a local section with a wildcard make non-listed functions
> > and variables as hidden, as it should be in all version.map files.
> > 
> > These are the changes done in the shared libraries:
> > - DF .text  Base          auxiliary_add_device
> > - DF .text  Base          auxiliary_dev_exists
> > - DF .text  Base          auxiliary_dev_iterate
> > - DF .text  Base          auxiliary_insert_device
> > - DF .text  Base          auxiliary_is_ignored_device
> > - DF .text  Base          auxiliary_match
> > - DF .text  Base          auxiliary_on_scan
> > - DF .text  Base          auxiliary_scan
> > - DO .bss   Base          auxiliary_bus_logtype
> > - DO .data  Base          auxiliary_bus
> > - DO .bss   Base          gpu_logtype
> > 
> > There is no impact on regexdev library.
> > 
> > Because these local symbols were exported as non-internal
> > in DPDK 21.11, any change in these functions would break the ABI.
> > Exception rules are added for these experimental libraries,
> > so the ABI check will skip them until the next ABI version.
> > 
> > A check is added to avoid such miss in future.
> > 
> > Fixes: 1afce3086cf4 ("bus/auxiliary: introduce auxiliary bus")
> > Fixes: 8b8036a66e3d ("gpudev: introduce GPU device class library")
> > Cc: stable at dpdk.org
> > 
> 
> If I take this 2/2 for 21.11.1, then I also need to backport [0] so I 
> won't have errors for common_mlx5.
> 
> Any problem with taking both?
> 
> [0]
> commit c2e3059a10f2389b791d5d485fe71e666984c193
> Author: Michael Baum <michaelba at nvidia.com>
> Date:   Fri Feb 25 01:25:06 2022 +0200
> 
>      common/mlx5: consider local functions as internal

I think that's fine to backport this as well.