Full cross-compile support

[Lev275568]

Hello!

I need full cross-compile support.

To full cross-compile I use:

• LLVM directory where compilers are located (llvmDir/bin/clang,llvmDir/bin/clang++,llvmDir/include/,llvmDir/lib/,llvmDir/libexec/,llvmDir/share/)
• flag "--sysroot". For example "--sysroot=/home/user2/src/sysroot"
• flag "--gcc-install-dir". For example "--gcc-install-dir=/home/user2/src/sysroot/usr/lib/gcc/x86_64-linux-gnu/12"
• flag "-resource-dir". For example "-resource-dir=/home/user2/src/compilerRt/workplace"

I think all of these directories can be hashed on client side and uploaded if hashes are different.
Something like rsync.