[CMake] symbolic linking at install

[Tim Schooley]

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Hi folks,

I know there are already a few posts on this subject - I've tried to
take what has been said to achieve my goal: for the install target, I
would like to link my libraries as follows (clearly, this is for unix only):

libabc.so -> libabc.so.1
libabc.so -> libabc.so.1.0
libabc.so -> libabc.so.1.0.0

And so forth.

The current code seems not to work :(

Install (   TARGETS abc
            LIBRARY DESTINATION ${PROJECT_INSTALL_LIBRARY_PATH}
            PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ
                        GROUP_EXECUTE GROUP_READ WORLD_READ
                        WORLD_EXECUTE   )

Install (   CODE "MESSAGE(\"Linking libabc.so\")"
            CODE "EXECUTE_PROCESS(
                COMMAND ${CMAKE_COMMAND} -E create_symlink
                ${PROJECT_INSTALL_LIBRARY_PATH}/libabc.so
                ${PROJECT_INSTALL_LIBRARY_PATH}/libabc.so.1 )" )

Have I completely misunderstood the usage of the Install(CODE ..)
command ? Also, placing the linking code _after_ the initial install
should guarantee the linking is run after the library is installed, yes ?

I also tried printing out a result variable from the link command, but
it was empty 0_0

Thanks for any help!

Kind regards,

Tim
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