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Silence some recent gcc warnings which we can't fix

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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.
This commit is contained in:
Nyall Dawson 2019-09-23 09:17:13 +10:00
parent 425afaa270
commit 869ee9bc66
1 changed files with 12 additions and 0 deletions
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12
CMakeLists.txt
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@ -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)