diff -Nru qtdeclarative-opensource-src-5.15.2+dfsg/debian/changelog qtdeclarative-opensource-src-5.15.2+dfsg/debian/changelog
--- qtdeclarative-opensource-src-5.15.2+dfsg/debian/changelog	2020-12-11 08:31:45.000000000 +0000
+++ qtdeclarative-opensource-src-5.15.2+dfsg/debian/changelog	2020-12-18 17:55:43.000000000 +0000
@@ -1,3 +1,14 @@
+qtdeclarative-opensource-src (5.15.2+dfsg-2+rpi1) bullseye-staging; urgency=medium
+
+  [changes brought forward from 5.14.2+dfsg-2+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Sat, 04 Jul 2020 19:53:58 +0000]
+  * Update symbols file for raspbian.
+
+  [changes introduced in 5.14.2+dfsg-3+rpi1 by Peter Michael Green]
+  * Mark a gcc 10 only symbol as optional.
+  * Disable testsuite.
+
+ -- Raspbian forward porter <root@raspbian.org>  Fri, 18 Dec 2020 17:55:43 +0000
+
 qtdeclarative-opensource-src (5.15.2+dfsg-2) unstable; urgency=medium
 
   * Bump Standards-Version to 4.5.1, no changes needed.
diff -Nru qtdeclarative-opensource-src-5.15.2+dfsg/debian/libqt5qml5.symbols qtdeclarative-opensource-src-5.15.2+dfsg/debian/libqt5qml5.symbols
--- qtdeclarative-opensource-src-5.15.2+dfsg/debian/libqt5qml5.symbols	2020-12-11 08:31:45.000000000 +0000
+++ qtdeclarative-opensource-src-5.15.2+dfsg/debian/libqt5qml5.symbols	2020-12-18 17:55:43.000000000 +0000
@@ -1697,7 +1697,7 @@
  _ZN3QV46Object26virtualResolveLookupSetterEPS0_PNS_15ExecutionEngineEPNS_6LookupERKNS_5ValueE@Qt_5_PRIVATE_API 5.12.3 1
  _ZN3QV46Object34defineReadonlyConfigurablePropertyEPNS_14StringOrSymbolERKNS_5ValueE@Qt_5_PRIVATE_API 5.12.2 1
  _ZN3QV46Object34defineReadonlyConfigurablePropertyERK7QStringRKNS_5ValueE@Qt_5_PRIVATE_API 5.10.0 1
- (optional=inline)_ZN3QV46Object8arraySetEjPKNS_8PropertyENS_18PropertyAttributesE@Qt_5_PRIVATE_API 5.15.1 1
+ (optional=gcc10only)_ZN3QV46Object8arraySetEjPKNS_8PropertyENS_18PropertyAttributesE@Qt_5_PRIVATE_API 5.14.2 1
  (optional=inline|arch=alpha armel armhf i386 ia64 mips64el mipsel powerpc riscv64 sparc64)_ZN3QV46Object8arraySetEjRKNS_5ValueE@Qt_5_PRIVATE_API 5.14.2 1
  _ZN3QV46Object8putValueEjNS_18PropertyAttributesERKNS_5ValueE@Qt_5_PRIVATE_API 5.12.2 1
  _ZN3QV46Object9push_backERKNS_5ValueE@Qt_5_PRIVATE_API 5.12.2 1
@@ -3248,12 +3248,12 @@
  _ZTIN6QQmlJS3AST9UiProgramE@Qt_5 5.3.0
  (arch=armel riscv64)_ZTIN9__gnu_cxx7__mutexE@Qt_5 5.14.1
  (arch=armel riscv64)_ZTISt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE1EE@Qt_5 5.14.1
- (arch=!armel !riscv64)_ZTISt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Qt_5 5.14.1
+ (optional=notarmelandprobabllynotraspbian)_ZTISt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Qt_5 5.14.1
  (arch=armel riscv64)_ZTISt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE1EE@Qt_5 5.14.1
- (arch=!armel !riscv64)_ZTISt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Qt_5 5.14.1
+ (optional=notarmelandprobabllynotraspbian)_ZTISt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Qt_5 5.14.1
  (arch=armel armhf)_ZTISt19_Sp_make_shared_tag@Qt_5 5.14.1
  (arch=armel riscv64)_ZTISt23_Sp_counted_ptr_inplaceIN14QQmlTypeLoader4Blob13PendingImportESaIS2_ELN9__gnu_cxx12_Lock_policyE1EE@Qt_5_PRIVATE_API 5.14.1 1
- (arch=!armel !riscv64)_ZTISt23_Sp_counted_ptr_inplaceIN14QQmlTypeLoader4Blob13PendingImportESaIS2_ELN9__gnu_cxx12_Lock_policyE2EE@Qt_5_PRIVATE_API 5.14.1 1
+ (optional=notarmelandprobabllynotraspbian)_ZTISt23_Sp_counted_ptr_inplaceIN14QQmlTypeLoader4Blob13PendingImportESaIS2_ELN9__gnu_cxx12_Lock_policyE2EE@Qt_5_PRIVATE_API 5.14.1 1
  _ZTIZN3QV48Compiler7Codegen29VolatileMemoryLocationScanner18collectIdentifiersER7QVectorI11QStringViewEPN6QQmlJS3AST4NodeEE9Collector@Qt_5_PRIVATE_API 5.12.3 1
  _ZTS10QQmlEngine@Qt_5 5.0.2
  _ZTS11QQmlBinding@Qt_5_PRIVATE_API 5.0.2 1
@@ -3471,12 +3471,12 @@
  _ZTSN6QQmlJS3AST9UiProgramE@Qt_5 5.3.0
  (arch=armel riscv64)_ZTSN9__gnu_cxx7__mutexE@Qt_5 5.14.1
  (arch=armel riscv64)_ZTSSt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE1EE@Qt_5 5.14.1
- (arch=!armel !riscv64)_ZTSSt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Qt_5 5.14.1
+ (optional=notarmelandprobabllynotraspbian)_ZTSSt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Qt_5 5.14.1
  (arch=armel riscv64)_ZTSSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE1EE@Qt_5 5.14.1
- (arch=!armel !riscv64)_ZTSSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Qt_5 5.14.1
+ (optional=notarmelandprobabllynotraspbian)_ZTSSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Qt_5 5.14.1
  _ZTSSt19_Sp_make_shared_tag@Qt_5 5.14.1
  (arch=armel riscv64)_ZTSSt23_Sp_counted_ptr_inplaceIN14QQmlTypeLoader4Blob13PendingImportESaIS2_ELN9__gnu_cxx12_Lock_policyE1EE@Qt_5_PRIVATE_API 5.14.1 1
- (arch=!armel !riscv64)_ZTSSt23_Sp_counted_ptr_inplaceIN14QQmlTypeLoader4Blob13PendingImportESaIS2_ELN9__gnu_cxx12_Lock_policyE2EE@Qt_5_PRIVATE_API 5.14.1 1
+ (optional=notarmelandprobabllynotraspbian)_ZTSSt23_Sp_counted_ptr_inplaceIN14QQmlTypeLoader4Blob13PendingImportESaIS2_ELN9__gnu_cxx12_Lock_policyE2EE@Qt_5_PRIVATE_API 5.14.1 1
  _ZTSZN3QV48Compiler7Codegen29VolatileMemoryLocationScanner18collectIdentifiersER7QVectorI11QStringViewEPN6QQmlJS3AST4NodeEE9Collector@Qt_5_PRIVATE_API 5.12.3 1
  _ZTV10QQmlEngine@Qt_5 5.0.2
  _ZTV11QQmlBinding@Qt_5_PRIVATE_API 5.0.2 1
@@ -3686,7 +3686,7 @@
  _ZTVN6QQmlJS3AST9StatementE@Qt_5 5.3.0
  _ZTVN6QQmlJS3AST9UiProgramE@Qt_5 5.3.0
  (arch=armel riscv64)_ZTVSt23_Sp_counted_ptr_inplaceIN14QQmlTypeLoader4Blob13PendingImportESaIS2_ELN9__gnu_cxx12_Lock_policyE1EE@Qt_5_PRIVATE_API 5.14.1 1
- (arch=!armel !riscv64)_ZTVSt23_Sp_counted_ptr_inplaceIN14QQmlTypeLoader4Blob13PendingImportESaIS2_ELN9__gnu_cxx12_Lock_policyE2EE@Qt_5_PRIVATE_API 5.14.1 1
+ (optional=notarmelandprobabllynotraspbian)_ZTVSt23_Sp_counted_ptr_inplaceIN14QQmlTypeLoader4Blob13PendingImportESaIS2_ELN9__gnu_cxx12_Lock_policyE2EE@Qt_5_PRIVATE_API 5.14.1 1
  _ZTVZN3QV48Compiler7Codegen29VolatileMemoryLocationScanner18collectIdentifiersER7QVectorI11QStringViewEPN6QQmlJS3AST4NodeEE9Collector@Qt_5_PRIVATE_API 5.12.3 1
  _ZZN8QQmlData4initEvE11initialized@Qt_5_PRIVATE_API 5.0.2 1
  (optional=templinst)_ZZN9QMetaType17registerConverterI8QJSValue11QStringListPFS2_RKS1_EEEbT1_E1f@Qt_5 5.4.0
diff -Nru qtdeclarative-opensource-src-5.15.2+dfsg/debian/rules qtdeclarative-opensource-src-5.15.2+dfsg/debian/rules
--- qtdeclarative-opensource-src-5.15.2+dfsg/debian/rules	2020-12-11 08:31:45.000000000 +0000
+++ qtdeclarative-opensource-src-5.15.2+dfsg/debian/rules	2020-12-18 17:55:43.000000000 +0000
@@ -62,7 +62,7 @@
 	dh_link -pqml usr/lib/qt5/bin/qml usr/lib/$(DEB_HOST_MULTIARCH)/qt5/bin/qml
 
 override_dh_auto_test-arch:
-ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
+ifeq (testsuitdisabled,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
 	$(MAKE) install INSTALL_ROOT=$(CURDIR)/test_root
 	mkdir -p $(CURDIR)/.local/share/QtProject/tst_qqmlengine
 	# - hppa: QML engine is broken, bug missing