borgbackup/borg#7250 is now fixed in 1.2-maint (pending for borg 1.2.4)
but borgbackup/borg#7252 was amended to a different approach before
being apporoved. Replace the original workaround with upstream's fix.
Borg can use the python pkgconfig package to discover library paths, we
don't need to pass them explicitly.
Removes libb2, because borg since version 1.2.0 uses hashlib.blake2b
instead.
Error with LLVM stdenv on aarch64-darwin:
libtool: compile: clang++ -DHAVE_CONFIG_H -I. -I../.. -DLIBDAR_MODE=64 -DDAR_LOCALEDIR=\"/nix/store/waclhq32gacp2010gyjx17f9h6xpsf8d-dar-2.7.7/share/locale\" -I/nix/store/1m4gsx4p4fl5xpg0h8splmwz7j2y3cbp-gpgme-1.18.0-dev/include -I/nix/store/fpc4g6ql1mx4na5rkjhik5f2wixymzhy-libassuan-2.5.5-dev/include -I/nix/store/qhznxypyfh3w5xdbxxd2n47d9c8jr2bx-libgpg-error-1.45-dev/include -g -O2 -c parallel_block_compressor.cpp -D__DYNAMIC__ -fno-common -DPIC -o .libs/parallel_block_compressor.o
In file included from parallel_tronconneuse.cpp:28:
In file included from ./parallel_tronconneuse.hpp:39:
In file included from /nix/store/3lsnbsiwzy2gzga1m2bszb7r9d6wraz2-libcxx-11.1.0-dev/include/c++/v1/string:506:
In file included from /nix/store/3lsnbsiwzy2gzga1m2bszb7r9d6wraz2-libcxx-11.1.0-dev/include/c++/v1/string_view:175:
In file included from /nix/store/3lsnbsiwzy2gzga1m2bszb7r9d6wraz2-libcxx-11.1.0-dev/include/c++/v1/__string:57:
In file included from /nix/store/3lsnbsiwzy2gzga1m2bszb7r9d6wraz2-libcxx-11.1.0-dev/include/c++/v1/algorithm:643:
/nix/store/3lsnbsiwzy2gzga1m2bszb7r9d6wraz2-libcxx-11.1.0-dev/include/c++/v1/memory:3455:7: error: exception specification of overriding function is more lax than base version
class __shared_ptr_emplace
^
/nix/store/3lsnbsiwzy2gzga1m2bszb7r9d6wraz2-libcxx-11.1.0-dev/include/c++/v1/memory:4291:26: note: in instantiation of template class 'std::__1::__shared_ptr_emplace<libthreadar::barrier, std::__1::allocator<libthreadar::barrier>>' requested here
::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...);
^
parallel_tronconneuse.cpp:102:15: note: in instantiation of function template specialization 'std::__1::make_shared<libthreadar::barrier, unsigned long>' requested here
waiter = make_shared<barrier>(num_workers + 2); // +1 for crypto_reade thread, +1 this thread
^
/nix/store/3lsnbsiwzy2gzga1m2bszb7r9d6wraz2-libcxx-11.1.0-dev/include/c++/v1/memory:3364:13: note: overridden virtual function is here
virtual ~__shared_weak_count();
^
1 error generated.
make[3]: *** [Makefile:1383: parallel_tronconneuse.lo] Error 1
