[Buildroot] [git commit branch/2022.05.x] package/qt5/qt5xmlpatterns: fix build failure due to gcc bug 90620

[Buildroot] [git commit branch/2022.05.x] package/qt5/qt5xmlpatterns: fix build failure due to gcc bug 90620

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=d67813e586158b0a9421bb0af3bddeebe32277d4
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2022.05.x

The qt5xmlpatterns package exhibits gcc bug 90620 [0] when built for the
Microblaze architecture with optimization enabled, which causes a build
failure.

As done for other packages in Buildroot work around this gcc bug by
setting optimization to -O0 if BR2_TOOLCHAIN_HAS_GCC_BUG_90620=y.

Fixes:
    http://autobuild.buildroot.net/results/346/346e6d502a8927c8e95eea156f5b2943a85d0a6b/

[0] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90620

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit ddedf5e785956d37bd971f1f804f8333cd9cc592)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 package/qt5/qt5xmlpatterns/qt5xmlpatterns.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/package/qt5/qt5xmlpatterns/qt5xmlpatterns.mk b/package/qt5/qt5xmlpatterns/qt5xmlpatterns.mk
index 27818ecb78..08f6d56747 100644
--- a/package/qt5/qt5xmlpatterns/qt5xmlpatterns.mk
+++ b/package/qt5/qt5xmlpatterns/qt5xmlpatterns.mk
@@ -20,4 +20,8 @@ ifeq ($(BR2_PACKAGE_QT5BASE_EXAMPLES),y)
 QT5XMLPATTERNS_LICENSE += , BSD-3-Clause (examples)
 endif
 
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_90620),y)
+QT5XMLPATTERNS_CONF_OPTS += "QMAKE_CXXFLAGS+=-O0"
+endif
+
 $(eval $(qmake-package))
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