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Hi Eero,

my first reflex was to say, that I don't believe this to be necessary.
As you already said, these variables aren't documented and thus I'd
argue that you don't have to consider them for maintaining backwards
compatibility during backports. I personally see this as a bug on our
part and as a coincidence that our setup worked pre-patch.

However, I'm not sure WHY those two variables where actually used by us
or where they originated from. Going as far back as cmake 3.0, these
variables where never documented, however doing a quick search for
those reveals that they actually are used in other (older?) projects.
So I'm not quite sure how many other users might be affected by this.
Maybe we actually SHOULD keep supporting them for the LTS branch, just
in case?

- --
With best regards

Jasper Orschulko
DevOps Engineer

Tel. +49 30 58 58 14 265
Fax +49 30 58 58 14 999
Jasper.Orschulko@...

• • • • • • • • • • • • • • • • • • • • • • • • • •

iris-GmbH
infrared & intelligent sensors
Schnellerstraße 1-5 | 12439 Berlin

https://iris-sensing.com/





On Mon, 2021-12-13 at 15:03 +0200, Eero Aaltonen wrote:

On Fri, 2021-12-10 at 18:49 +0000, Jasper Orschulko wrote:

Hello everyone,

after some digging we identified the issue to be on our part.
We have been using "GTEST_LIBRARY" and "GTEST_MAIN_LIBRARY" in our
CMake scripts instead of "GTEST_LIBRARIES" and
"GTEST_MAIN_LIBRARIES",
as described in the cmake docs:

https://cmake.org/cmake/help/v3.16/module/FindGTest.html#result-variables

Thank you for providing more details.

The gmock target can be backported to dunfell in an alternative way,
by
leaving out the
    find_package(GTest QUIET NO_MODULE)

call and subsequent lines and letting the FindModule create all the
definitions. This would leave also the undocumented variables intact,
if that is desired.

This should be as simple as dropping the lines
----------------------------------------------
# first specifically look for the CMake version of GTest
find_package(GTest QUIET NO_MODULE)

# if we found the GTest cmake package then we are done, and
# can print what we found and return.
if(GTest_FOUND)
    set(GTEST_FOUND ${GTest_FOUND})
    FIND_PACKAGE_HANDLE_STANDARD_ARGS(GTest HANDLE_COMPONENTS
CONFIG_MODE)

    set(GTEST_LIBRARIES      GTest::gtest)
    set(GTEST_MAIN_LIBRARIES GTest::gtest_main)

    __gtest_define_backwards_compatible_library_targets()

    return()
endif()
----------------------------------------------

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