getopt: fix build on clang 16 #235498
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getopt: fix build on clang 16 #235498
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Normally, when getopt builds on a non-glibc platform, it uses C library headers without including them. That’s fine unless your compiler is clang 16, which is strict about using functions without prototypes. Fortunately, Darwin’s headers are compatible enough as are Musl’s, so defining `__GNU_LIBRARY__` can be done unconditionally.
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Description of changes
Normally, when getopt builds on a non-glibc platform, it uses C library headers without including them. That’s fine unless your compiler is clang 16, which is strict about using functions without prototypes. Fortunately, Darwin’s headers are compatible enough as are Musl’s, so defining
__GNU_LIBRARY__can be done unconditionally.Linux build was tested against both glibc and Musl.
Things done
sandbox = trueset innix.conf? (See Nix manual)nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage./result/bin/)