forked from mirrors/nixpkgs
07c4056179
When invoking a simple Ada program with `gcc` from `gnats10`, the following warnings are shown: ``` $ gcc -c conftest.adb gnat1: warning: command-line option ‘-Wformat=1’ is valid for C/C++/ObjC/ObjC++ but not for Ada gnat1: warning: command-line option ‘-Wformat-security’ is valid for C/C++/ObjC/ObjC++ but not for Ada gnat1: warning: ‘-Werror=’ argument ‘-Werror=format-security’ is not valid for Ada $ echo $? 0 ``` This is only spammy when compiling Ada programs inside a Nix derivation, but certain configure scripts (such as the ./configure script from the gcc that's built by coreboot's `make crossgcc` command) fail entirely when getting that warning output. https://nixos.wiki/wiki/Coreboot currently suggests manually running > NIX_HARDENING_ENABLE="${NIX_HARDENING_ENABLE/ format/}" make crossgcc … but actually teaching the nixpkgs-provided cc wrapper that `format` isn't supported as a hardening flag seems to be the more canonical way to do this in nixpgks. After this, Ada programs still compile: ``` $ gcc -c conftest.adb $ echo $? 0 ``` And the compiler output is empty. |
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