qBittorrent/cmake/Modules/CompileFeature.cmake
Eugene Shalygin fa770871e9 Refactor CMake build scripts
1. Use FeatureSummary module to show configuration results.

2. Invert option()/find_package() relationship: instead of
calling find_package(... REQUIRED) when option is set, rely on optional
find package call and PackageName_FOUND variable.

3. Refactor handling options that result in simple preprocessor defines
(actually copy the snippet from libtorrent) so that everything is done
in a single function call.

4. Populate target properties in order to get rid of
include_directories() calls.
2018-06-05 11:39:11 +02:00

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CMake

# Helper function for coupling add_feature_info(), option(), and add_definitions()
function(optional_compile_definitions _name)
set(options FEATURE)
set(oneValueArgs DESCRIPTION DEFAULT)
set(multiValueArgs ENABLED DISABLED)
cmake_parse_arguments(OCD "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
option(${_name} "${OCD_DESCRIPTION}" ${OCD_DEFAULT})
if (${${_name}})
set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY COMPILE_DEFINITIONS ${OCD_ENABLED})
else()
set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY COMPILE_DEFINITIONS ${OCD_DISABLED})
endif()
if(${OCD_FEATURE})
add_feature_info(${_name} ${_name} "${OCD_DESCRIPTION}")
endif()
endfunction()
macro(feature_option _name _description _default)
option(${_name} "${_description}" ${_default})
add_feature_info(${_name} ${_name} "${_description}")
endmacro()