Snippets for libgcrypt 1.12.2 from Nix x86_64-linux

Sourced from https://hydra.nixos.org/log/p004bs392j59g0qvx21nm0k6bd6w2c9i-libgcrypt-1.12.2.drv.

• /nix/store/m300ngckdmal8wnl3bjbpwca3a5bn74c-glibc-2.42-67-dev/include/features.h:435:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
    435 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
        |    ^~~~~~~