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cmake/add_warning.cmake

29lines · modecode

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1	`include (CheckCXXCompilerFlag)`
2	`include (CheckCCompilerFlag)`
3
4	`# Try to add -Wflag if compiler supports it`
5	`macro (add_warning flag)`
6	`string (REPLACE "-" "_" underscored_flag ${flag})`
7	`string (REPLACE "+" "x" underscored_flag ${underscored_flag})`
8
9	`check_cxx_compiler_flag("-W${flag}" SUPPORTS_CXXFLAG_${underscored_flag})`
10	`check_c_compiler_flag("-W${flag}" SUPPORTS_CFLAG_${underscored_flag})`
11
12	`if (SUPPORTS_CXXFLAG_${underscored_flag})`
13	`set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -W${flag}")`
14	`else ()`
15	`message (WARNING "Flag -W${flag} is unsupported")`
16	`endif ()`
17
18	`if (SUPPORTS_CFLAG_${underscored_flag})`
19	`set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -W${flag}")`
20	`else ()`
21	`message (WARNING "Flag -W${flag} is unsupported")`
22	`endif ()`
23
24	`endmacro ()`
25
26	`# Try to add -Wno flag if compiler supports it`
27	`macro (no_warning flag)`
28	`add_warning(no-${flag})`
29	`endmacro ()`