2017-09-21 10:41:06 +00:00
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include(CheckCXXCompilerFlag)
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# Adds CXX compiler flag if the flag is supported by the compiler.
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#
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# This is effectively a combination of CMake's check_cxx_compiler_flag()
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# and add_compile_options():
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#
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# if(check_cxx_compiler_flag(flag))
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# add_compile_options(flag)
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#
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function(eth_add_cxx_compiler_flag_if_supported FLAG)
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# Remove leading - or / from the flag name.
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2019-11-27 11:11:57 +00:00
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string(REGEX REPLACE "^[-/]" "" name ${FLAG})
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# Deletes any ':' because it's invalid variable names.
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string(REGEX REPLACE ":" "" name ${name})
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2017-09-21 10:41:06 +00:00
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check_cxx_compiler_flag(${FLAG} ${name})
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if(${name})
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add_compile_options(${FLAG})
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endif()
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# If the optional argument passed, store the result there.
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if(ARGV1)
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set(${ARGV1} ${name} PARENT_SCOPE)
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endif()
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endfunction()
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