Build failure related to libmp3lame header

[larkinxp]

After cloning the project and running zig build run on WSL/Ubuntu25.04.

error: /home/user/.cache/zig/p/libmp3lame-3.100.1-5-67wlF1KvEwDaCOrGGAl9Yb52UG3bcezunnbLcJo2t2HC/config.h.in: error: config header value unused: 'size_t'
Build Summary: 168/177 steps succeeded; 1 failed
install transitive failure
├─ install ffmpeg transitive failure
│  └─ compile lib ffmpeg Debug native transitive failure
│     ├─ compile lib mp3lame Debug native transitive failure
│     │  └─ configure autoconf_at header config.h.in to config.h failure
│     └─ compile lib mp3lame Debug native (+1 more reused dependencies)
├─ install show_metadata_c transitive failure
│  └─ compile exe show_metadata_c Debug native transitive failure
│     ├─ compile lib ffmpeg Debug native (+169 more reused dependencies)
│     └─ compile lib ffmpeg Debug native (+169 more reused dependencies)
└─ install show_metadata_zig transitive failure
   └─ compile exe show_metadata_zig Debug native transitive failure
      ├─ compile lib ffmpeg Debug native (+169 more reused dependencies)
      └─ compile lib ffmpeg Debug native (+169 more reused dependencies)
error: the following build command failed with exit code 1:
.zig-cache/o/1746f4d30c3744f30bfbe0699193c54d/build /home/user/.vscode-server/data/User/globalStorage/ziglang.vscode-zig/zig/x86_64-linux-0.15.0-dev.769+4d7980645/zig /home/user/.vscode-server/data/User/globalStorage/ziglang.vscode-zig/zig/x86_64-linux-0.15.0-dev.769+4d7980645/lib /d/projects/zig/ffmpeg .zig-cache /home/user/.cache/zig --seed 0xeedf838e -Za5471be94800b0f3

[0x4A4FRN]

try with autoconf_undef