Until now, mixed targets was only about native build and so we were not
using a meson cross_config file and env var was enough.
But now we also to correctly set it in the cross_config file.
We need to set the property `needs_exe_wrapper` to true for
x86_64 cross compilation.
Else, meson will try to detect if we could run the cross
compiled executable, and because it is the same arch, it will
assume we can. So it will try to sanity check and execute the
cross compiled binary. Then fails.
Instead of having the run_command function setting the
env from the buildEnv, this is the dependency that create the
env and then pass it to the run_command function.
This way, each dependency will be able to set a specific env.
This is needed for win32 on fedora.
It is better to use a specific pkg-config than setting a PKG_CONFIG_LIBDIR.
This avoid other CI (libzim/...) to set a env var specific to win32 build.
- Dependency are installed "striped".
- Our project are build "debugoptimized" by default and "release" when
building release instead of "debug"
We need to update the `base_deps_meta_version` as we are changing how
dependencies are compiled.
This is the big change !!!!
Instead of handling target as primary object and prepare/build targets,
we are handling build steps.
A build step may be a source (preparation) or a build (of the source).
Actualy, a step is a tuple (context, Builder or Source).
The context define the context of the step. It can be :
- 'source', for a Source step
- 'neutral' or the name of a platform for Build step.
Target becomes a "Class only" class.
Sometime the root_path is dependent of the target platform and sometime
not. But sometime dependent of the build arch :/
[TODO] We should move the cross_file generation to the PlatformInfo class.
Introduce also a "NeutralEnv", a build environment independent of the
targeted platform. All `Source` now build using the neutralEnv.
Most of toolchains are also using neutralEnv except android_ndk who is
specific to a platform.
As toolchain are neutral, platform specific environment variables are now
set by the platformInfo directly instead of the toolchain.
