CODEWITHSUNDEEP
windowscmaketar
heLomaN
heLomaN

Reputation: 1804

How to extract all file in a .tar.gz to specific folder with cmake add_custom_target?

To decrease library size, used cmake -E tar "zcvf" "lib.tar.gz" out.lib in cmake to automatically create .tar.gz then lib.tar.gz is moved to folder f, ie. f/lib.tar.gz.

However, to use this library in another project, it's needed to extract to specific folder. The command without cmake is clear: tar -xzf f/lib.tar.gz -C target-folder.

The problem is that, in cmake, how to combine cmake -E tar "xzf" f/lib.tar.gz with -C option? Commands such as cmake -E tar "xzf" f/lib.tar.gz -C f/ will result error.

Ideal script would be sth. like 

add_custom_target(PrepareLib
        COMMAND ${CMAKE_COMMAND}  -E tar "xzf" command....
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} ## note, this line must not be modified
    )

Tools version: Visual Studio 2017, Windows 10 and CMake 3.17.1.

Upvotes: 0

Views: 2627

Answers (1)

theBigCheese88
theBigCheese88

Reputation: 452

execute_process(
    COMMAND ${CMAKE_COMMAND} -E tar x 
    "file_to_extract.7z"
    WORKING_DIRECTORY "directory_you_want_to_extract_to"
    )

If you don't know whether the directory_you_want_to_extract_to exists or not then run this comand before the tar.

execute_process(
        COMMAND ${CMAKE_COMMAND} -E make_directory 
        "directory_you_want_to_extract_to"
        )

Upvotes: 0

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