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cmake: Silence warnings with clang.

This commit is contained in:
orbea 2020-02-12 11:20:11 -08:00
parent c008a5d523
commit 0c05ad471c
2 changed files with 12 additions and 7 deletions
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11
CMakeLists.txt
View File

@ -81,16 +81,13 @@ endif()
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-Wall" COMPILER_SUPPORTS_WALL)
if(COMPILER_SUPPORTS_WALL)
message("Enabling -Wall")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
endif()
include(CheckCXXFlag)
check_cxx_flag(-Wall COMPILER_SUPPORTS_WALL)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-switch")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-switch")
if(NOT ANDROID)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-class-memaccess -Wno-invalid-offsetof")
check_cxx_flag(-Wno-class-memaccess COMPILER_SUPPORTS_MEMACCESS)
check_cxx_flag(-Wno-invalid-offsetof COMPILER_SUPPORTS_OFFSETOF)
endif()
endif()

8
CMakeModules/CheckCXXFlag.cmake Normal file
View File

@ -0,0 +1,8 @@
include(CheckCXXCompilerFlag)
function(check_cxx_flag flag var)
CHECK_CXX_COMPILER_FLAG("-Werror ${flag}" ${var})
if(${var})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}" PARENT_SCOPE)
endif()
endfunction()