4de4221ab4b645ff77503c777c9b195a962e9fa1 build: Check for std::atomic::exchange rather than std::atomic_exchange (Andrew Chow)
Pull request description:
Our usage of std::atomic is with it's own exchange function, not std::atomic_exchange. So we should be looking specifically for that function.
This removes the need for -latomic for riscv builds, which resolves a guix cross architecture reproducibility issue.
ACKs for top commit:
hebasto:
ACK 4de4221ab4b645ff77503c777c9b195a962e9fa1
fanquake:
ACK 4de4221ab4b645ff77503c777c9b195a962e9fa1
Tree-SHA512: dd8225fc9c6a335601f611700003d0249b9ef941efa502db39306129677929d013048e9221be1d6d7f0ea2d90313d4b87de239f441be21b25bea40a6c19a031e
0c4e6ce Add MIT license to build-aux/m4 scripts (Luke Dashjr)
3f8a5d8 Trivial: build-aux/m4/l_atomic: Fix typo (Luke Dashjr)
3b4b6dc Add MIT license to autogen.sh and share/genbuild.sh (Luke Dashjr)
f4dffdd Add MIT license to Makefiles (Luke Dashjr)