QBE via zig

This repo provides QBE installable / dependable on via the zig package manager. QBE can be consumed either as a binary or a library

QBE binary

The qbe-zig provides an artifact qbe that some other module can depend on:

// Depend on qbe-zig via a build.zig.zon
const qbe = b.dependency("qbe-zig", .{ .target = target, .optimize = optimize });

// Extract the `qbe` binary artifact
const qbe_bin = qbe.artifact("qbe");

QBE library

The upstream QBE repository does not expose a anyway of using QBE as a library. qbe-zig offers the ability to call QBE as library by more or less duplicating the existing main.c as lib.c and replacing the main function with libemit.

A tiny wrapper around libemit is then provided via src/qbe.zig.

To use QBE as a library in a zig project, in your build.zig have something like:

// Depend on qbe-zig via a build.zig.zon
const qbe = b.dependency("qbe-zig", .{ .target = target, .optimize = optimize });

const exe = b.addExecutable(...);

// Link against the static library
exe.linkLibrary(qbe.artifact("qbe-lib"));

// Expose to your exe code
exe.root_module.addImport("qbe-zig", qbe.module("qbe-zig"));

In your zig code import the module:

const qbe = @import("qbe-zig");

Call emit where you need:

qbe.emit("test.ssa", "test.s");

See example/ for full example of library usage.