qtbase: fix build with gcc-9

* some components which use Werror started to fail with gcc-9, because of new warning:
  https://gcc.gnu.org/gcc-9/changes.html
  New warnings:
    -Wdeprecated-copy, implied by -Wextra, warns about the C++11
       deprecation of implicitly declared copy constructor and
       assignment operator if one of them is user-provided.
       -Wdeprecated-copy-dtor also warns if the destructor is
       user-provided, as specified in C++11.
* e.g. maliit-framework-qt5 was now failing with:
  maliit-framework-qt5/0.99.0+gitAUTOINC+62bd54bcde-r0/recipe-sysroot/usr/include/QtCore/qvariant.h:273:25:
  error: implicitly-declared 'constexpr QVariant::Private& QVariant::Private::operator=(const QVariant::Private&)' is deprecated [-Werror=deprecated-copy]
  273 |     { other.d = Private(); }
      |                         ^

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/recipes-qt/qt5/qtbase/0020-Bootstrap-without-linkat-feature.patch b/recipes-qt/qt5/qtbase/0020-Bootstrap-without-linkat-feature.patch
new file mode 100644
index 00000000..e681bfbb
--- /dev/null
+++ b/recipes-qt/qt5/qtbase/0020-Bootstrap-without-linkat-feature.patch
@@ -0,0 +1,27 @@
+From d52010c7d58f1a25f51a909b3179df656ed9d9c4 Mon Sep 17 00:00:00 2001
+From: Samuli Piippo <samuli.piippo@qt.io>
+Date: Fri, 24 Nov 2017 15:16:31 +0200
+Subject: [PATCH] Bootstrap without linkat feature
+
+qmake does not work together with pseudo when unnamed temporary files
+are used with linkat.
+
+Upstream-Status: Inappropriate [OE specific]
+[YOCTO #11996]
+---
+ src/corelib/global/qconfig-bootstrapped.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/corelib/global/qconfig-bootstrapped.h b/src/corelib/global/qconfig-bootstrapped.h
+index 30166fe41c..e06f75541b 100644
+--- a/src/corelib/global/qconfig-bootstrapped.h
++++ b/src/corelib/global/qconfig-bootstrapped.h
+@@ -91,7 +91,7 @@
+ #define QT_FEATURE_itemmodel -1
+ #define QT_FEATURE_library -1
+ #ifdef __linux__
+-# define QT_FEATURE_linkat 1
++# define QT_FEATURE_linkat -1
+ #else
+ # define QT_FEATURE_linkat -1
+ #endif