C Preprocessor broken in newer version | Zig Programming Language | Page 1

indigo thunder Jan 31, 2025, 7:56 PM

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Hello, I have a build.zig for my C/C++ project that worked perfectly in the nightly 0.11.0 that I was using, but I tried upgrading to a nightly for 0.14.0 and I'm getting errors, specifically with my use of defineCMacro:

    const exe = b.addExecutable(.{
        .name = "chron4",
        .target = target,
        .optimize = optimize,
    });
    if(deploy){
        exe.defineCMacro("DEPLOY_BUILD", null);
    }

This line was to add a preprocessor macro for handling deploy features in the C and it worked just fine before but no longer, now I get

C:\dev\chron4\build.zig:39:12: error: no field or member function named 'defineCMacro' in 'Build.Step.Compile'

Is ther another way I can pass along this option to the binary?

sterile sapphire Jan 31, 2025, 8:00 PM

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indigo thunder Hello, I have a build.zig for my C/C++ project that worked perfectly in the nigh...

it was renamed to exe.root_module.addCMacro("DEPLOY_BUILD", "")

indigo thunder Jan 31, 2025, 8:01 PM

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thank you, i was trying to track down when/if it was changed, is there any way I could have found that

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not sure if theres someplace i wasnt looking

sterile sapphire Jan 31, 2025, 8:02 PM

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if you knew lots of stuff was being moved to root_module, you might have looked in there

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also searching defineCMacro in zig prs shows the pr that removed it (but it's mixed in with some other stuff so maybe not super obvious https://github.com/ziglang/zig/pulls?q=defineCMacro)

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also it was apparently deprecated in 0.13 but zig has no warnings so I had no idea like most people until it was gone

#C Preprocessor broken in newer version