The current versions only have partial C++11 support which fortunately
has caused us only few issues so far but it would be good to finally
have fully working C++11 support. This also gets rid of several CI
builds on very outdated platforms.
The outdated platforms were used to also test CMake 2.8 but as future
versions of CMake will drop combability with CMake < 3.5 this is a good
time to also drop that requirement on our part.
This PR does not remove or update any outdated code.
Qt 5.15 will be EOL on May 26 so we should start switching away from it.
We already have issues with many of the previous versions and qmake on
legacy distros so we should cut that off.
I will add a Qt6 release build for Windows in another PR so it can be
tested. We should switch to it as the delivered build after the next
release and stop using Qt5 altogether in the CI in the release
afterwards (that would get rid of several build steps). We could leave
it so you could still try to build it but no longer support it so it is
up to the user to get it to work before removing it completely later on.
* CI-unixish.yml: handle precompiled headers with `ccache`
* actually support `ccache` in CMake < 3.17
* CI-unixish-docker.yml: split CMake build and test execution into separate steps
* findDependencies.cmake: only print message about macthcompiler being disabled when it is actually used
* CI-unixish-docker.yml: added missing `ccache` CMake options
* modernized some CMake invocations
* CI-unixish.yml: use `ccache` for Linux gcc CMake builds
* CI-unixish-docker.yml: use `ccache` for Linux gcc CMake builds
* CI-unixish-docker.yml: enabled CMake build with tests for more images
* CI-unixish-docker.yml: adjusted some step checks
* CI-unixish-docker.yml: perform make and CMake builds in parallel
* CI-unixish-docker.yml: cleanups
* CI-unixish-docker.yml: only install necessary packages
Oliver Stöneberg
amai2012