[WIP] build: Use specific cross-compilers instead of multilib one #22456
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The actual config.guess output may differ from the triplets that are documented in depends/README.md.
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This PR replaces the
g++-multilibcompiler with arch-specific cross-compilers for x86_64 and i386 hosts.Motivation:
g++-multilibpackage conflicts with arch-specific cross-compiler packages. That means it is not possible to cross compile for i386 and other platforms on x86_64 system with the same set of installed packages.g++-multilibpackage is not available for the aarch64 arch. That means it is not possible to cross-compile for x86_64 in a Docker container on Apple Silicon based systems.