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macro(ADD_APP_ICON appsources filename)
# MacOS icon specific stuff
if(APPLE)
message(STATUS "AddAppIcon macro, MacOS version")
SET(ICON_source_file ${CMAKE_CURRENT_SOURCE_DIR}/${filename}_512.png)
# Extract filename without extension
get_filename_component(ICON_NAME ${filename} NAME_WE)
# find icon conversion programs
find_program(SIPS_EXECUTABLE NAMES sips) # for PNG -> TIFF conversion
find_program(TIFF2ICNS_EXECUTABLE NAMES tiff2icns) # for TIFF -> ICNS
if(SIPS_EXECUTABLE AND TIFF2ICNS_EXECUTABLE)
message(STATUS "The sips and tiff2icns utilities are available. Application will have an application icon!")
SET(ICON_outfile ${CMAKE_CURRENT_BINARY_DIR}/${ICON_NAME})
# Command to convert PNG to ICNS
add_custom_command(OUTPUT ${ICON_outfile}.icns ${ICON_outfile}.tiff
COMMAND ${SIPS_EXECUTABLE} -s format tiff ${ICON_source_file} --out ${ICON_outfile}.tiff
COMMAND ${TIFF2ICNS_EXECUTABLE} ${ICON_outfile}.tiff ${ICON_outfile}.icns
DEPENDS ${ICON_source_file}
)
#
set(MACOSX_BUNDLE_ICON_FILE ${ICON_NAME}.icns)
#
list(APPEND ${appsources} ${ICON_outfile}.icns)
#
set_source_files_properties(${ICON_outfile}.icns PROPERTIES MACOSX_PACKAGE_LOCATION Resources)
else(SIPS_EXECUTABLE AND TIFF2ICNS_EXECUTABLE)
message(STATUS "Unable to find the sips and tiff2icns utilities. Application will not have an application icon!")
endif(SIPS_EXECUTABLE AND TIFF2ICNS_EXECUTABLE)
else(APPLE)
message(STATUS "AddAppIcon only supports Apple MacOS. Application will not have an application icon!")
endif(APPLE)
endmacro(ADD_APP_ICON)
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