# INCLUDE : include( Gzip )

# COMMAND : compress_gz( -9 ${INPUT_FILE} ${OUTPUT_FILE} )

################################################################################

find_program( GZIP gzip )

if( GZIP )

message( STATUS "Found gzip: ${GZIP}" )

# It is not possible to add a dependency to target 'all'

# Run hard-coded 'make gzip' when 'make install' is invoked

install( CODE "EXECUTE_PROCESS(COMMAND make gzip)" )

add_custom_target( gzip )

macro( compress_gz COMPRESSION_RATE INPUT_FILE OUTPUT_FILE )

get_filename_component( FILENAME "${INPUT_FILE}" NAME )

get_filename_component( OUTPUT_PATH "${OUTPUT_FILE}" DIRECTORY )

add_custom_command(

OUTPUT "${OUTPUT_FILE}"

COMMAND ${CMAKE_COMMAND} -E make_directory "${OUTPUT_PATH}"

COMMAND ${GZIP} ${COMPRESSION_RATE} -c "${INPUT_FILE}" > "${OUTPUT_FILE}"

)

add_custom_target( "gzip_${FILENAME}"

DEPENDS "${OUTPUT_FILE}"

)

add_dependencies( gzip "gzip_${FILENAME}" )

endmacro( compress_gz COMPRESSION_RATE INPUT_FILE OUTPUT_FILE )

else( GZIP )

message( STATUS "Not found gzip: Files.gz won't be compressed" )

macro( compress_gz COMPRESSION_RATE INPUT_FILE OUTPUT_FILE )

endmacro( compress_gz COMPRESSION_RATE INPUT_FILE OUTPUT_FILE )

endif( GZIP )