[CMake] Generating libtool file with CMake

[Mathieu Tarral via CMake]

Hi !


I'm trying to port the LibVMI project from autotools to CMake:
https://github.com/libvmi/libvmi/pull/674

One of the problems I have is to generate a libtool libvmi.la file, like autotools is already doing.


So far I have found this module on CMake wiki: https://gitlab.kitware.com/cmake/community/wikis/contrib/macros/LibtoolFile

But it seems a bit old.
CMake Error at cmake/modules/Libtool.cmake:9 (GET_TARGET_PROPERTY):
The LOCATION property may not be read from target "vmi_shared". Use the
target name directly with add_custom_command, or use the generator
expression $<TARGET_FILE>, as appropriate.

Call Stack (most recent call first):
libvmi/CMakeLists.txt:127 (create_libtool_file)


I found an updated version of this script on the GNU Radio project:
https://github.com/gnuradio/gnuradio/blob/master/cmake/Modules/CMakeMacroLibtoolFile.cmake

But again, another error:
CMake Error:
Error evaluating generator expression:

$<TARGET_FILE:$_target>

Expression syntax not recognized.


-> Can the CMake community help me a bit to generate
this libtool file on a recent CMake release ?


Thanks !
--
Mathieu Tarral

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