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51 lines
1.9 KiB
51 lines
1.9 KiB
# Generator expression helpers |
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# If "NEW", `set(CACHE ...)` does not override non-cache variables |
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if(POLICY CMP0126) |
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cmake_policy(GET CMP0126 _cache_does_not_override_normal_vars_policy) |
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else() |
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set(_cache_does_not_override_normal_vars_policy "OLD") |
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endif() |
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macro(GENEX_OPTION name default description) |
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if(_cache_does_not_override_normal_vars_policy STREQUAL "NEW") |
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set(_define_cache_var TRUE) |
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elseif(DEFINED ${name}) |
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get_property(_define_cache_var CACHE ${name} PROPERTY TYPE) |
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endif() |
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if(_define_cache_var) |
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set(${name} ${default} CACHE STRING ${description}) |
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set_property(CACHE ${name} PROPERTY STRINGS FOR_DEBUG FOR_RELEASE ON OFF) |
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else() |
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message("Skipping `set(CACHE ${name} ...)`: CMake is < 3.21 and a non-cache variable with the same name is already set (${name}=${${name}})") |
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endif() |
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endmacro() |
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# Provide an option that defaults to ON in debug builds. |
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macro(DEBUG_OPTION name description) |
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GENEX_OPTION(${name} FOR_DEBUG ${description}) |
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endmacro() |
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# Provide an option that defaults to ON in non-debug builds. |
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# Note that this applies to Release, RelWithDebInfo, and MinSizeRel. |
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macro(RELEASE_OPTION name description) |
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GENEX_OPTION(${name} FOR_RELEASE ${description}) |
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endmacro() |
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# Generate a generator expression for the given variable's current value. |
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# |
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# Supported variable values and what the resulting generator expression will evaluate to: |
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# * FOR_DEBUG - 1 in Debug config. |
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# * FOR_RELEASE - 1 in non-Debug config (Release, RelWithDebInfo). |
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# * Boolean value (TRUE, FALSE, ON, 1, etc) - that value as 0 or 1. |
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# |
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# Result is set on ${option}_GENEX in the calling scope. |
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function(genex_for_option name) |
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set(value ${${name}}) |
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set( |
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${name}_GENEX |
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$<IF:$<STREQUAL:${value},FOR_DEBUG>,$<CONFIG:Debug>,$<IF:$<STREQUAL:${value},FOR_RELEASE>,$<NOT:$<CONFIG:Debug>>,$<BOOL:${value}>>> |
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PARENT_SCOPE |
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) |
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endfunction()
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