linux targets use a very old gcc to have broad ABI support and those gccs dont support CPP11 or further because at that time there was no CPP11.
This is a problem for the libtorrent versions > 1.1.5 because they switch to CPP11. To prevent breaking the ABI while moving to a never version of GCC, an up to date version of clang can be build with old gcc, and further versions of libtorrent can be compiled with new clang.
linux targets use a very old gcc to have broad ABI support and those gccs dont support CPP11 or further because at that time there was no CPP11.
This is a problem for the libtorrent versions > 1.1.5 because they switch to CPP11. To prevent breaking the ABI while moving to a never version of GCC, an up to date version of clang can be build with old gcc, and further versions of libtorrent can be compiled with new clang.