diff -up signon-plugin-oauth2.git/common-project-config.pri.cxxflags signon-plugin-oauth2.git/common-project-config.pri
--- signon-plugin-oauth2.git/common-project-config.pri.cxxflags	2015-04-17 01:59:01.000000000 -0500
+++ signon-plugin-oauth2.git/common-project-config.pri	2020-11-08 11:49:40.752319952 -0600
@@ -15,10 +15,10 @@ UI_DIR          = ui
 UI_HEADERS_DIR  = ui/include
 UI_SOURCES_DIR  = ui/src
 
-QMAKE_CXXFLAGS += -fno-exceptions \
-    -fno-rtti
+#QMAKE_CXXFLAGS += -fno-exceptions \
+#    -fno-rtti
 # we don't like warnings...
-QMAKE_CXXFLAGS += -Werror
+#QMAKE_CXXFLAGS += -Werror
 
 TOP_SRC_DIR     = $$PWD
 
diff -up signon-plugin-oauth2.git/tests/tests.pro.cxxflags signon-plugin-oauth2.git/tests/tests.pro
--- signon-plugin-oauth2.git/tests/tests.pro.cxxflags	2015-04-17 01:59:01.000000000 -0500
+++ signon-plugin-oauth2.git/tests/tests.pro	2020-11-08 12:25:41.647654996 -0600
@@ -6,6 +6,8 @@ QT += core \
     testlib
 QT -= gui
 
+QMAKE_CXXFLAGS += -fno-rtti
+
 DEFINES -= SIGNON_TRACE
 CONFIG += \
     link_pkgconfig