cpp/src/compress/CMakeLists.txt

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message("Running in src/storage/tsfile/compress directory")
set(CMAKE_POSITION_INDEPENDENT_CODE ON)

# Initialize source file list
set(compress_SRC_LIST "compressor.cc")

# Initialize header file list
set(HEADERS "")

# Conditionally add Snappy compression
if(ENABLE_SNAPPY)
    list(APPEND compress_SRC_LIST "snappy_compressor.cc")
    list(APPEND HEADERS "snappy_compressor.h")
endif()

# Conditionally add LZ4 compression
if(ENABLE_LZ4)
    list(APPEND compress_SRC_LIST "lz4_compressor.cc")
    list(APPEND HEADERS "lz4_compressor.h")
endif()

# Conditionally add LZO-Kay compression
if(ENABLE_LZOKAY)
    list(APPEND compress_SRC_LIST "lzo_compressor.cc")
    list(APPEND HEADERS "lzo_compressor.h")
endif()

# Conditionally add Zlib compression
if(ENABLE_ZLIB)
    list(APPEND compress_SRC_LIST "gzip_compressor.cc")
    list(APPEND HEADERS "gzip_compressor.h")
endif()

# Add common headers (always copied)
file(GLOB COMMON_HEADERS "*.h")
foreach(header IN LISTS HEADERS)
    list(REMOVE_ITEM COMMON_HEADERS ${header})
endforeach()

list(APPEND HEADERS ${COMMON_HEADERS})

add_library(compress_obj OBJECT ${compress_SRC_LIST})

# make header paths absolute (relative to this CMakeLists.txt) ---
set(ABS_HEADERS "")
foreach(h IN LISTS HEADERS)
    if(IS_ABSOLUTE "${h}")
        list(APPEND ABS_HEADERS "${h}")
    else()
        # prepend current source dir so copy_to_dir sees the real file path
        list(APPEND ABS_HEADERS "${CMAKE_CURRENT_SOURCE_DIR}/${h}")
    endif()
endforeach()
# call copy function with absolute/qualified header paths
copy_to_dir(${ABS_HEADERS} "compress_obj")