diff --git devel/qt5-qmake/files/patch-config.tests_arch_arch.pro devel/qt5-qmake/files/patch-config.tests_arch_arch.pro
new file mode 100644
index 000000000000..051a52f38555
--- /dev/null
+++ devel/qt5-qmake/files/patch-config.tests_arch_arch.pro
@@ -0,0 +1,6 @@
+--- config.tests/arch/arch.pro.orig	2021-05-26 21:40:42 UTC
++++ config.tests/arch/arch.pro
+@@ -1,2 +1,3 @@
+ SOURCES = arch.cpp
++QMAKE_CXXFLAGS += $$(CXXFLAGS)
+ include(write_info.pri)