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# Set policy if policy is available
function(set_policy POL VAL)
if(POLICY ${POL})
cmake_policy(SET ${POL} ${VAL})
endif()
endfunction(set_policy)
# Define function "source_group_by_path with three mandatory arguments (PARENT_PATH, REGEX, GROUP, ...)
# to group source files in folders (e.g. for MSVC solutions).
#
# Example:
# source_group_by_path("${CMAKE_CURRENT_SOURCE_DIR}/src" "\\\\.h$|\\\\.inl$|\\\\.cpp$|\\\\.c$|\\\\.ui$|\\\\.qrc$" "Source Files" ${sources})
function(source_group_by_path PARENT_PATH REGEX GROUP)
foreach (FILENAME ${ARGN})
get_filename_component(FILEPATH "${FILENAME}" REALPATH)
file(RELATIVE_PATH FILEPATH ${PARENT_PATH} ${FILEPATH})
get_filename_component(FILEPATH "${FILEPATH}" DIRECTORY)
string(REPLACE "/" "\\" FILEPATH "${FILEPATH}")
source_group("${GROUP}\\${FILEPATH}" REGULAR_EXPRESSION "${REGEX}" FILES ${FILENAME})
endforeach()
endfunction(source_group_by_path)
# Function that extract entries matching a given regex from a list.
# ${OUTPUT} will store the list of matching filenames.
function(list_extract OUTPUT REGEX)
foreach(FILENAME ${ARGN})
if(${FILENAME} MATCHES "${REGEX}")
list(APPEND ${OUTPUT} ${FILENAME})
endif()
endforeach()
set(${OUTPUT} ${${OUTPUT}} PARENT_SCOPE)
endfunction(list_extract)
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