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cmake_minimum_required(VERSION 3.14)
project(ToClean)
# Utility variables
set(CSD ${CMAKE_CURRENT_SOURCE_DIR})
set(CBD ${CMAKE_CURRENT_BINARY_DIR})
set(CLEAN_FILE_CONTENT "File registered for cleaning.\n")
# Lists build-time-generated files that should be cleaned away
set_property(GLOBAL PROPERTY TOCLEAN_FILES "")
function(addCleanFile FILENAME)
set_property(GLOBAL APPEND PROPERTY TOCLEAN_FILES "${FILENAME}")
endfunction()
function(writeCleanFile FILENAME)
file(WRITE "${FILENAME}" ${CLEAN_FILE_CONTENT})
endfunction()
set(DUMMY_CONTENT_FILE ${CSD}/toclean.cxx)
# Build a simple project whose compiled objects should be cleaned.
add_executable(toclean toclean.cxx)
addCleanFile(
"${CBD}${CMAKE_FILES_DIRECTORY}/toclean.dir/toclean.cxx${CMAKE_CXX_OUTPUT_EXTENSION}")
# Create a post build custom command that copies a dummy file
# to a custom location
function(addPostBuildFile TARGET FILENAME)
add_custom_command(TARGET ${TARGET} POST_BUILD
COMMAND ${CMAKE_COMMAND}
ARGS -E copy ${DUMMY_CONTENT_FILE} ${FILENAME})
endfunction()
# Create a custom command whose output should be cleaned.
set(CustomCommandFile "${CBD}/CustomCommandFile.txt")
add_custom_command(OUTPUT ${CustomCommandFile}
DEPENDS ${DUMMY_CONTENT_FILE}
COMMAND ${CMAKE_COMMAND}
ARGS -E copy ${DUMMY_CONTENT_FILE} ${CustomCommandFile})
add_custom_target(customTarget ALL DEPENDS ${CustomCommandFile})
addCleanFile(${CustomCommandFile})
### Tests ADDITIONAL_MAKE_CLEAN_FILES directory property
if("${CMAKE_GENERATOR}" MATCHES "Makefile")
# Create a file that must be registered for cleaning.
set(MakeDirPropFileAbs "${CBD}/MakeDirPropFile.txt")
writeCleanFile("${MakeDirPropFileAbs}")
set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES "${MakeDirPropFileAbs}")
addCleanFile(${MakeDirPropFileAbs})
# Create a custom command whose output should be cleaned, but whose name
# is not known until generate-time
set(MakeDirPropExpFileRel "MakeDirProp_copy${CMAKE_EXECUTABLE_SUFFIX}")
set(MakeDirPropExpFileAbs "$<TARGET_FILE_DIR:toclean>/${MakeDirPropExpFileRel}")
addPostBuildFile(toclean "${MakeDirPropExpFileAbs}")
set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${MakeDirPropExpFileAbs})
addCleanFile("${CBD}/${MakeDirPropExpFileRel}")
endif()
### Tests ADDITIONAL_CLEAN_FILES directory property
# Register a file path relative to the build directory
set(DirPropFileRel "DirPropFileRel.txt")
writeCleanFile("${CBD}/${DirPropFileRel}")
set_directory_properties(PROPERTIES ADDITIONAL_CLEAN_FILES ${DirPropFileRel})
addCleanFile("${CBD}/${DirPropFileRel}")
# Register an absolute file path
set(DirPropFileAbs "${CBD}/DirPropFileAbs.txt")
writeCleanFile("${DirPropFileAbs}")
set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_CLEAN_FILES ${DirPropFileAbs})
addCleanFile("${DirPropFileAbs}")
# Create a custom command whose output should be cleaned, but whose name
# is not known until generate-time
set(DirPropExpFileRel "DirProp_copy${CMAKE_EXECUTABLE_SUFFIX}")
set(DirPropExpFileAbs "$<TARGET_FILE_DIR:toclean>/${DirPropExpFileRel}")
addPostBuildFile(toclean "${DirPropExpFileAbs}")
set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_CLEAN_FILES ${DirPropExpFileAbs})
addCleanFile("${CBD}/${DirPropExpFileRel}")
### Tests ADDITIONAL_CLEAN_FILES target property
function(test_target_property TARGET)
# Register a file path relative to the build directory
set(TgtPropFileRel "${TARGET}_TargetPropFileRel.txt")
writeCleanFile("${CBD}/${TgtPropFileRel}")
set_target_properties(${TARGET} PROPERTIES ADDITIONAL_CLEAN_FILES ${TgtPropFileRel})
addCleanFile("${CBD}/${TgtPropFileRel}")
# Register an absolute file path
set(TgtPropFileAbs "${CBD}/${TARGET}_TargetPropFileAbs.txt")
writeCleanFile("${TgtPropFileAbs}")
set_property(TARGET ${TARGET} APPEND PROPERTY ADDITIONAL_CLEAN_FILES ${TgtPropFileAbs})
addCleanFile("${TgtPropFileAbs}")
# Create a custom command whose output should be cleaned, but whose name
# is not known until generate-time
set(TgtPropExpFileRel "${TARGET}_TargetPropGenExp.txt")
set(TgtPropExpFileAbs "$<TARGET_FILE_DIR:toclean>/${TgtPropExpFileRel}")
addPostBuildFile(${TARGET} "${TgtPropExpFileAbs}")
set_property(TARGET ${TARGET} APPEND PROPERTY ADDITIONAL_CLEAN_FILES ${TgtPropExpFileAbs})
addCleanFile("${CBD}/${TgtPropExpFileRel}")
endfunction()
# Test target property for various target types
add_executable(acf_exec toclean.cxx)
test_target_property(acf_exec)
add_library(acf_lib toclean.cxx)
test_target_property(acf_lib)
add_custom_target(acf_custom ALL DEPENDS ${CustomCommandFile})
test_target_property(acf_custom)
# Process subdirectory without targets
add_subdirectory(EmptySubDir)
# Configure a file listing these build-time-generated files.
get_property(TOCLEAN_FILES GLOBAL PROPERTY TOCLEAN_FILES)
configure_file(${CSD}/ToCleanFiles.cmake.in ${CBD}/ToCleanFiles.cmake @ONLY)