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build.zig: addBuildOptionArtifact

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This commit is contained in:
Josh Wolfe 2020-09-24 21:22:39 -04:00 committed by Andrew Kelley
parent bd89bd6fdb
commit 1a8669eada
1 changed files with 23 additions and 1 deletions
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24
lib/std/build.zig
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@ -1165,6 +1165,11 @@ pub const FileSource = union(enum) {
}
};
const BuildOptionArtifactArg = struct {
name: []const u8,
artifact: *LibExeObjStep,
};
pub const LibExeObjStep = struct {
step: Step,
builder: *Builder,
@ -1210,6 +1215,7 @@ pub const LibExeObjStep = struct {
out_pdb_filename: []const u8,
packages: ArrayList(Pkg),
build_options_contents: std.ArrayList(u8),
build_options_artifact_args: std.ArrayList(BuildOptionArtifactArg),
system_linker_hack: bool = false,
object_src: []const u8,
@ -1355,6 +1361,7 @@ pub const LibExeObjStep = struct {
.framework_dirs = ArrayList([]const u8).init(builder.allocator),
.object_src = undefined,
.build_options_contents = std.ArrayList(u8).init(builder.allocator),
.build_options_artifact_args = std.ArrayList(BuildOptionArtifactArg).init(builder.allocator),
.c_std = Builder.CStd.C99,
.override_lib_dir = null,
.main_pkg_path = null,
@ -1812,6 +1819,13 @@ pub const LibExeObjStep = struct {
out.print("pub const {} = {};\n", .{ name, value }) catch unreachable;
}
/// The value is the path in the cache dir.
/// Adds a dependency automatically.
pub fn addBuildOptionArtifact(self: *LibExeObjStep, name: []const u8, artifact: *LibExeObjStep) void {
self.build_options_artifact_args.append(.{ .name = name, .artifact = artifact }) catch unreachable;
self.step.dependOn(&artifact.step);
}
pub fn addSystemIncludeDir(self: *LibExeObjStep, path: []const u8) void {
self.include_dirs.append(IncludeDir{ .RawPathSystem = self.builder.dupe(path) }) catch unreachable;
}
@ -1995,7 +2009,15 @@ pub const LibExeObjStep = struct {
}
}
if (self.build_options_contents.items.len > 0) {
if (self.build_options_contents.items.len > 0 or self.build_options_artifact_args.items.len > 0) {
// Render build artifact options at the last minute, now that the path is known.
for (self.build_options_artifact_args.items) |item| {
const out = self.build_options_contents.writer();
out.print("pub const {}: []const u8 = ", .{item.name}) catch unreachable;
std.zig.renderStringLiteral(item.artifact.getOutputPath(), out) catch unreachable;
out.writeAll(";\n") catch unreachable;
}
const build_options_file = try fs.path.join(
builder.allocator,
&[_][]const u8{ builder.cache_root, builder.fmt("{}_build_options.zig", .{self.name}) },