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Update build.zig for 0.16 fs.Dir -> Io.Dir #31

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Merged
jayschwa merged 4 commits into from
Jan 14, 2026
Merged

Update build.zig for 0.16 fs.Dir -> Io.Dir #31

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1b278ce
Update build.zig for 0.16 fs.Dir -> Io.Dir
mdm5995 Jan 11, 2026
940b2c2
Add branching for 0.16 and current support
mdm5995 Jan 11, 2026
53b1f48
Remove compatability shim for emscripten build
mdm5995 Jan 12, 2026
e900968
Fix build with Zig 0.15.2
jayschwa Jan 14, 2026
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23 changes: 16 additions & 7 deletions build.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -67,13 +67,22 @@ pub fn build(b: *std.Build) void {
const cache_include = std.fs.path.join(b.allocator, &.{ b.sysroot.?, "cache", "sysroot", "include" }) catch @panic("Out of memory");
defer b.allocator.free(cache_include);

// TODO: Remove compatibility shim when Zig 0.16.0 is the minimum required version.
const open_dir_opts: std.fs.Dir.OpenOptions = if (@hasField(std.fs.Dir.OpenOptions, "follow_symlinks"))
.{ .access_sub_paths = true, .follow_symlinks = false }
else
.{ .access_sub_paths = true, .no_follow = true };
var dir = std.fs.openDirAbsolute(cache_include, open_dir_opts) catch @panic("No emscripten cache. Generate it!");
dir.close();
// TODO: Remove compatibility shim when minimum Zig version is 0.16.0.
if (@hasDecl(std.Io, "Dir")) {
// Zig 0.16.0-dev
var dir = std.Io.Dir.openDirAbsolute(mod.owner.graph.io, cache_include, .{
.access_sub_paths = true,
.follow_symlinks = false,
}) catch @panic("No emscripten cache. Generate it!");
dir.close(mod.owner.graph.io);
} else if (@hasDecl(std.fs, "Dir")) {
// Zig 0.15.x
var dir = std.fs.openDirAbsolute(cache_include, .{
.access_sub_paths = true,
.no_follow = true,
}) catch @panic("No emscripten cache. Generate it!");
dir.close();
} else @compileError("Fix `openDirAbsolute` compatibility shim");

mod.addIncludePath(.{ .cwd_relative = cache_include });
},
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