Initial version of the conanfile.py to support builds with Conan
package manager. Tested with Linux, macOS and Windows desktop
builds first.
Use 'scm' revision_mode so that the revision matches with the git
commit id.
The recipe uses Qt's configure(.bat) and cmake directly,
'conans.CMake' utility tool is not used.
Load options dynamically based on configure(.bat) features:
- configure(.bat) -write-options-for-conan <output file>
- Expose all usable configure(.bat) options as Conan options
- We want to query configure(.bat) for available options and
features to avoid duplicating these in multiple places
- The available configure(.bat) option names are formatted to
suit as dictionary keys in Conan 'options'
The recipe writes 'configure_options.json' and
'configure_features.txt' which are exported as part of the
conan package. This is done only once during the 'conan export'
i.e. when the initial Conan package is being created.
The recipe will reference these files in later phases when needed.
The recipe translates the Qt configure options and features as
Conan options and default_options. When the build is invoked
('conan install') the recipe translates the Conan options back
to suitable Qt configure options which are then passed to
configure(.bat).
Additional cmake flags can be passed via 'extra_cmake_args' option:
$conan install ... -o extra_cmake_args="-DFOO=bar -DFOO2=bar2"
Remove those options from 'package_id' that point to local environment
like installation paths. These are most probably different on end user
machines making it impossible to re-use the pre-built binaries by Qt CI
as the path values would become of the 'package_id' checksum.
Task-number: QTBUG-92031
Change-Id: I4e47d116fdef6a5daa23aba22bac2b2d74d12c6e
Reviewed-by: Toni Saario <toni.saario@qt.io>
