How to set the value of COLCON_CURRENT_PREFIX placed in setup and local_setup scripts during build?

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when cross compiling the value of COLCON_CURRENT_PREFIX in setup and local_setup scripts is set to the installation directory on the host system, which is not correct when the files are transferred over to the target. Currently I patch those scripts after cross-compiling with the actual path of ros installation on target. It would be convenient to have it automatically set during build time by knowing the value of TARGET_INSTALL_PATH for example.