Silence some recent gcc warnings which we can't fix

Since the fixes for these are either outside our control (residing in Qt system headers), or break compatiblity with older compiler versions which we still support.
qgis · Sep 23, 2019 · 869ee9b · 869ee9b
1 parent 425afaa
commit 869ee9b
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -531,11 +531,23 @@ IF (PEDANTIC)
   ELSE (MSVC)
     # add warnings via flags (not as definitions as on Mac -Wall can not be overridden per language )
     SET(_warnings "-Wall -Wextra -Wno-long-long -Wformat-security -Wno-strict-aliasing")
+
     SET(WERROR FALSE CACHE BOOL "Treat build warnings as errors.")
     IF (WERROR)
       SET(_warnings "${_warnings} -Werror")
     ENDIF(WERROR)
     SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_warnings}")
+
+    # c++ only warnings
+
+    # unavoidable - we can't avoid these, as older, supported compilers do not support removing the redundant move
+    SET(_warnings "${_warnings} -Wno-redundant-move")
+
+    IF(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 8.0)
+      # heaps of these thrown by Qt headers at the moment (sep 2019)
+      SET(_warnings "${_warnings} -Wno-deprecated-copy")
+    ENDIF(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 8.0)
+
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_warnings}")
 
     # Qt produces lots of warnings with strict aliasing (as of Qt 4.4.0 & GCC 4.3)