mirror of
https://github.com/NixOS/nix.git
synced 2025-11-08 19:46:02 +01:00
boost::concurrent_flat_map (used in libutil and libstore) includes the
C++17 <execution> header. GCC's libstdc++ implements parallel algorithms
using Intel TBB as the backend, which creates a link-time dependency on
libtbb even though we don't actually use any parallel algorithms.
Disable the TBB backend for libstdc++ by setting
_GLIBCXX_USE_TBB_PAR_BACKEND=0. This makes parallel algorithms fall back
to serial execution, which is acceptable since we don't use them anyway.
This only affects libstdc++ (GCC's standard library); other standard
libraries like libc++ (LLVM) are unaffected.
(cherry picked from commit
|
||
|---|---|---|
| .. | ||
| assert-fail | ||
| meson.build | ||