fix(server) copy mbedtls find cmake file

[andreasebner]

For MbedTLS Version (<3) e.g. delivered with Ubuntu 20LTS, we need a dedicated cmake-find file (see Mbedtls 3.0 release notes "Add CMake package config generation for CMake projects consuming Mbed TLS." https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.0.0). Therefore we have to copy the file during the make install.

[jpfr]

Please check the mbedtls version for this.
I would prefer not to do this for the debian package.
So we don't collide with stuff that other projects should be doing.

Or have this in a file where we aggregate different helper macros...

[keba-estr]

I also get a similar error with a debian bookworm armhf build:

CMake Error at /usr/share/cmake-3.25/Modules/CMakeFindDependencyMacro.cmake:47 (find_package):
By not providing "FindMbedTLS.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "MbedTLS", but
CMake did not find one.
Could not find a package configuration file provided by "MbedTLS" with any
of the following names:
MbedTLSConfig.cmake
mbedtls-config.cmake
Add the installation prefix of "MbedTLS" to CMAKE_PREFIX_PATH or set
"MbedTLS_DIR" to a directory containing one of the above files. If
"MbedTLS" provides a separate development package or SDK, be sure it has
been installed.
Call Stack (most recent call first):
/usr/lib/arm-linux-gnueabihf/cmake/open62541/open62541Config.cmake:50 (find_dependency)
CMakeLists.txt:34 (include)
-- Configuring incomplete, errors occurred!

[keba-estr]

The following commit has an influence on this topic:
14c1d6f

[andreasebner]

The following commit has an influence on this topic: 14c1d6f

This was an issue and is solved in the latest release. But without the change in this PR, the FindMbedtls.cmake file (needed for mbedtls versions <3.0) is not copied to the install location. Since the copy process is more or less a workarround, we currently discuss on how to include it in a good manner.

[andreasebner]

Solved with latest changes on 1.4.