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76a08cd253
Add `COMPILE_WARNING_AS_ERROR` target property and supporting `CMAKE_COMPILE_WARNING_AS_ERROR` variable. `COMPILE_WARNING_AS_ERROR` is initialized by `CMAKE_COMPILE_WARNING_AS_ERROR`. It is a boolean variable. If it is true, it expands to a different flag depending on the compiler such that any warnings at compile will be treated as errors. Supports compiler ids that I could find a relevant flag for.
19 lines
901 B
CMake
19 lines
901 B
CMake
# add compile options to warning_options to ensure unused-function throws a warning
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# if warning_options is NOT DEFINED, assume compiler doesn't support warning as error
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macro(get_warning_options warning_options)
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if (CMAKE_CXX_COMPILER_ID MATCHES "^(GNU|Clang|AppleClang|XLClang|IBMClang|LCC|NVCC|IntelLLVM)$")
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set(${warning_options} "-Wall")
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC"
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OR (CMAKE_CXX_COMPILER_ID STREQUAL "Intel" AND CMAKE_CXX_SIMULATE_ID MATCHES "MSVC"))
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set(${warning_options} "-W4")
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
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set(${warning_options} "-w3")
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "XL")
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set(${warning_options} "-qinfo=all")
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
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set(${warning_options} "+w;+w2")
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elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Fujitsu")
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set(${warning_options} "SHELL:-w 8")
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endif()
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endmacro()
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