strawberry-audio-player-win.../cmake/Summary.cmake

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CMake
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set(summary_willbuild "")
set(summary_willnotbuild "")
macro(summary_add name test)
if (${test})
list(APPEND summary_willbuild ${name})
else (${test})
list(APPEND summary_willnotbuild "${name}")
endif (${test})
endmacro(summary_add)
macro(summary_show_part variable title)
list(LENGTH ${variable} _len)
if (_len)
message("")
message(${title})
foreach (_item ${${variable}})
message(" ${_item}")
endforeach (_item)
endif (_len)
endmacro(summary_show_part)
macro(summary_show)
list(SORT summary_willbuild)
list(SORT summary_willnotbuild)
message("")
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message("Building strawberry version: ${STRAWBERRY_VERSION_DISPLAY}, Qt version ${Qt${QT_VERSION_MAJOR}Core_VERSION}")
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summary_show_part(summary_willbuild "The following components will be built:")
summary_show_part(summary_willnotbuild "The following components WILL NOT be built:")
message("")
endmacro(summary_show)
function(optional_component name default description)
set(option_variable "ENABLE_${name}")
set(have_variable "HAVE_${name}")
set(${have_variable} OFF)
# Create the option
option(${option_variable} "${description}" ${default})
# Was the option set?
if(NOT ${option_variable})
set(summary_willnotbuild "${summary_willnotbuild};${description} (disabled in CMake config)" PARENT_SCOPE)
return()
endif()
# Check each of the dependencies
set(next_arg_is_dep_name FALSE)
set(testing_deps TRUE)
set(current_dep_name)
set(missing_deps)
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foreach(arg ${ARGN})
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if(${next_arg_is_dep_name})
set(current_dep_name "${arg}")
set(next_arg_is_dep_name FALSE)
elseif(arg STREQUAL "DEPENDS")
set(next_arg_is_dep_name TRUE)
set(testing_deps TRUE)
elseif(${testing_deps})
string(REPLACE " " ";" arglist "${arg}")
if(${arglist})
# We have to do this instead of if(NOT ${arg}) so that tests may contain "NOT" themselves.
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else()
list(APPEND missing_deps "${current_dep_name}")
set(testing_deps FALSE)
endif()
endif()
endforeach()
if(missing_deps)
foreach(dep ${missing_deps})
if(deplist_text)
set(deplist_text "${deplist_text}, ${dep}")
else()
set(deplist_text "${dep}")
endif()
endforeach()
set(text "${description} (missing ${deplist_text})")
set(summary_willnotbuild "${summary_willnotbuild};${text}" PARENT_SCOPE)
else()
set(${have_variable} ON PARENT_SCOPE)
set(summary_willbuild "${summary_willbuild};${description}" PARENT_SCOPE)
endif()
endfunction()