CMake config file contains only 'major.minor.patch' version

[lukaszstolarczuk]

When executing make install we prepare (and install) a special config file, to be used via CMake's find_package in other projects. It currently uses a CMake's helper function: write_basic_package_version_file <docs>. This helper function uses a template, which uses VERSION in format <major.minor.patch> - it does not use any tweak or pre-release version part. So it's always uses the same version, even though we e.g. moved on from "0.1.0" version by many commits on the main branch.

That said - it seems it will be a little difficult to find out the real version of e.g. a customer's version installed in the system.

Perhaps, one solution would be to write our own config version script...?

FYI, the config file mentioned above is currently installed like here: install-dir/lib/cmake/umf/umf-config-version.cmake, and starts like this:

set(PACKAGE_VERSION "0.1.0")

if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
  set(PACKAGE_VERSION_COMPATIBLE FALSE)
else()
...

Along with that, we should probably add info in README file, how to integrate our project via CMake (or propose other integration ways).

This issue is slightly related to #453.

[lukaszstolarczuk]

I think after changes in #616 we can say this issue will be outdated. We no longer use CMake as a main source of our version. If anyone uses our lib, we print the proper (complete, semver aligned version) in CMake configure step and in our logger. So it should be fairly ease to establish the proper version installed in the system.

[bratpiorka]

closing - with logging enabled we could get all info needed