[Buildroot] [PATCH 1/1] package/qt5/qt5base: fix build with gcc 11

[Peter Seiderer <ps.report@gmx.net>]

Hello Fabrice,

On Thu,  3 Jun 2021 07:56:44 +0200, Fabrice Fontaine <fontaine.fabrice@gmail.com> wrote:

> Fix the following build failure with gcc 11:
>
> /data/buildroot-autobuilder/instance-0/output-1/build/qt5base-5.15.2/include/QtCore/../../src/corelib/global/qfloat16.h:300:7: error: 'numeric_limits' is not a class template
>   300 | class numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> : public numeric_limits<float>
>       |       ^~~~~~~~~~~~~~
>
> Fixes:
>  - http://autobuild.buildroot.org/results/9a7a987af40b8408ccdfcae4890008c7090b41a1
>
> Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>

Reviewed-by: Peter Seiderer <ps.report@gmx.net>

Regards,
Peter


> ---
>  ...Fix-build-with-GCC-11-include-limits.patch | 53 +++++++++++++++++++
>  1 file changed, 53 insertions(+)
>  create mode 100644 package/qt5/qt5base/0006-Fix-build-with-GCC-11-include-limits.patch
>
> diff --git a/package/qt5/qt5base/0006-Fix-build-with-GCC-11-include-limits.patch b/package/qt5/qt5base/0006-Fix-build-with-GCC-11-include-limits.patch
> new file mode 100644
> index 0000000000..f014a160d5
> --- /dev/null
> +++ b/package/qt5/qt5base/0006-Fix-build-with-GCC-11-include-limits.patch
> @@ -0,0 +1,53 @@
> +From 9c56d4da2ff631a8c1c30475bd792f6c86bda53c Mon Sep 17 00:00:00 2001
> +From: Thiago Macieira <thiago.macieira@intel.com>
> +Date: Mon, 18 Jan 2021 07:40:54 -0800
> +Subject: [PATCH] Fix build with GCC 11: include <limits>
> +
> +Fixes: QTBUG-90395
> +Pick-to: 6.0
> +Change-Id: Iecc74d2000eb40dfbe7bfffd165b5dd3708b7a40
> +Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
> +
> +[Retrieved (and backported) from:
> +https://github.com/qt/qtbase/commit/9c56d4da2ff631a8c1c30475bd792f6c86bda53c]
> +Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
> +---
> + src/corelib/global/qendian.h  | 6 ++++--
> + src/corelib/global/qfloat16.h | 1 +
> + 2 files changed, 5 insertions(+), 2 deletions(-)
> +
> +diff --git a/src/corelib/global/qendian.h b/src/corelib/global/qendian.h
> +index 99b529f17cd..c874c5e47ab 100644
> +--- a/src/corelib/global/qendian.h
> ++++ b/src/corelib/global/qendian.h
> +@@ -1,7 +1,7 @@
> + /****************************************************************************
> + **
> +-** Copyright (C) 2016 The Qt Company Ltd.
> +-** Copyright (C) 2016 Intel Corporation.
> ++** Copyright (C) 2021 The Qt Company Ltd.
> ++** Copyright (C) 2021 Intel Corporation.
> + ** Contact: https://www.qt.io/licensing/
> + **
> + ** This file is part of the QtCore module of the Qt Toolkit.
> +@@ -44,6 +44,8 @@
> + #include <QtCore/qfloat16.h>
> + #include <QtCore/qglobal.h>
> +
> ++#include <limits>
> ++
> + // include stdlib.h and hope that it defines __GLIBC__ for glibc-based systems
> + #include <stdlib.h>
> + #include <string.h>
> +diff --git a/src/corelib/global/qfloat16.h b/src/corelib/global/qfloat16.h
> +index e9477d2ecec..a25fac28862 100644
> +--- a/src/corelib/global/qfloat16.h
> ++++ b/src/corelib/global/qfloat16.h
> +@@ -44,6 +44,7 @@
> +
> + #include <QtCore/qglobal.h>
> + #include <QtCore/qmetatype.h>
> ++#include <limits>
> + #include <string.h>
> +
> + #if defined(QT_COMPILER_SUPPORTS_F16C) && defined(__AVX2__) && !defined(__F16C__)