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Changing a file that causes CMake to re-run would incorrectly use leftover state to arrive at the wrong conclusion about whether the system has a given type.
31 lines
1,002 B
CMake
31 lines
1,002 B
CMake
include(CheckTypeSize)
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check_type_size("long int" SIZEOF_LONG_INT)
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check_type_size("long long" SIZEOF_LONG_LONG)
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check_type_size("void *" SIZEOF_VOID_P)
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# checks existence of ${_type}, and if it does not, sets CMake variable ${_var}
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# to alternative type, ${_alt_type}
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macro(CheckType _type _alt_type _var)
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# don't perform check if we have a result from a previous CMake run
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if (NOT HAVE_${_var})
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check_type_size(${_type} ${_var})
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if (NOT ${_var})
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set(${_var} ${_alt_type})
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else ()
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unset(${_var})
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unset(${_var} CACHE)
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endif ()
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endif ()
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endmacro(CheckType _type _alt_type _var)
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set(CMAKE_EXTRA_INCLUDE_FILES sys/types.h)
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CheckType(int32_t int int32_t)
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CheckType(u_int32_t u_int u_int32_t)
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CheckType(u_int16_t u_short u_int16_t)
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CheckType(u_int8_t u_char u_int8_t)
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set(CMAKE_EXTRA_INCLUDE_FILES)
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set(CMAKE_EXTRA_INCLUDE_FILES sys/socket.h)
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CheckType(socklen_t int socklen_t)
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set(CMAKE_EXTRA_INCLUDE_FILES)
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