[libcamera-devel] [PATCH] qcam: Fix compilation errors with clang-10

[Niklas Söderlund]

Hi Laurent,

Thanks for your patch.

On 2020-02-18 02:14:05 +0200, Laurent Pinchart wrote:
> clang-10 has introduced the same deprecated-copy warning that appeared
> in gcc-9 and caused build issues with Qt header files. However, the
> clang version seems more sensitive, and detects issues that are not
> fixed in Qt 5.13, unlike gcc-9.
> 
> Extend the logic that disables the warning for gcc-9 and Qt < 5.13 to
> cover clang-10 and all Qt versions.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

Reviewed-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>

> ---
>  src/qcam/meson.build | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/src/qcam/meson.build b/src/qcam/meson.build
> index 5b877a84da85..5150631b55c8 100644
> --- a/src/qcam/meson.build
> +++ b/src/qcam/meson.build
> @@ -25,13 +25,12 @@ if qt5_dep.found()
>      qt5_cpp_args = [ '-DQT_NO_KEYWORDS' ]
>  
>      # gcc 9 introduced a deprecated-copy warning that is triggered by Qt until
> -    # Qt 5.13. Disable it manually.
> -    if cc.get_id() == 'gcc'
> -        gcc_version = cc.version().split('.')
> -        qt5_version = qt5_dep.version().split('.')
> -        if qt5_version[1].to_int() < 13 and gcc_version[0].to_int() >= 9
> -            qt5_cpp_args += [ '-Wno-deprecated-copy' ]
> -        endif
> +    # Qt 5.13. clang 10 introduced the same warning, but detects more issues
> +    # that are not fixed in Qt yet. Disable the warning manually in both cases.
> +    if ((cc.get_id() == 'gcc' and cc.version().version_compare('>=9.0') and
> +         qt5_dep.version().version_compare('<5.13')) or
> +        (cc.get_id() == 'clang' and cc.version().version_compare('>=10.0')))
> +        qt5_cpp_args += [ '-Wno-deprecated-copy' ]
>      endif
>  
>      resources = qt5.preprocess(moc_headers: qcam_moc_headers,
> -- 
> Regards,
> 
> Laurent Pinchart
> 
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-- 
Regards,
Niklas Söderlund