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gpu-dawn: add -Dfrom-source=[bool] option

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-02-11 21:27:38 -07:00 • committed by Stephen Gutekanst
parent f878524fde
commit 03fff3267d
1 changed files with 12 additions and 6 deletions
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18
gpu-dawn/build.zig
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@ -7,11 +7,15 @@ pub fn build(b: *Builder) void {
const mode = b.standardReleaseOptions();
const target = b.standardTargetOptions(.{});
const options = Options{
.from_source = b.option(bool, "from-source", "Build Dawn from source") orelse false,
};
const lib = b.addStaticLibrary("gpu", "src/main.zig");
lib.setBuildMode(mode);
lib.setTarget(target);
lib.install();
link(b, lib, .{});
link(b, lib, options);
const main_tests = b.addTest("src/main.zig");
main_tests.setBuildMode(mode);
@ -22,7 +26,7 @@ pub fn build(b: *Builder) void {
const dawn_example = b.addExecutable("dawn-example", "src/dawn/hello_triangle.zig");
dawn_example.setBuildMode(mode);
dawn_example.setTarget(target);
link(b, dawn_example, .{});
link(b, dawn_example, options);
glfw.link(b, dawn_example, .{ .system_sdk = .{ .set_sysroot = false } });
dawn_example.addPackagePath("glfw", "libs/mach-glfw/src/main.zig");
dawn_example.addIncludeDir("libs/dawn/out/Debug/gen/src/include");
@ -75,9 +79,11 @@ pub const Options = struct {
/// iteration times when building from source / testing changes to Dawn source code.)
separate_libs: bool = false,
/// Whether to build Dawn from source or not.
from_source: bool = false,
/// The binary release version to use from https://github.com/hexops/mach-gpu-dawn/releases
/// If null, Dawn will be built from source.
binary_version: ?[]const u8 = "release-2e5a4eb",
binary_version: []const u8 = "release-2e5a4eb",
/// Detects the default options to use for the given target.
pub fn detectDefaults(self: Options, target: std.Target) Options {
@ -110,7 +116,7 @@ pub fn link(b: *Builder, step: *std.build.LibExeObjStep, options: Options) void
ensureSubmodules(b.allocator) catch |err| @panic(@errorName(err));
if (options.binary_version != null) linkFromBinary(b, step, opt) else linkFromSource(b, step, opt);
if (options.from_source) linkFromSource(b, step, opt) else linkFromBinary(b, step, opt);
}
fn linkFromSource(b: *Builder, step: *std.build.LibExeObjStep, options: Options) void {
@ -191,7 +197,7 @@ pub fn linkFromBinary(b: *Builder, step: *std.build.LibExeObjStep, options: Opti
};
return linkFromSource(b, step, options);
};
ensureBinaryDownloaded(b.allocator, triple, options.binary_version.?);
ensureBinaryDownloaded(b.allocator, triple, options.binary_version);
const current_git_commit = getCurrentGitCommit(b.allocator) catch unreachable;
const base_cache_dir_rel = std.fs.path.join(b.allocator, &.{ "zig-cache", "mach", "gpu-dawn" }) catch unreachable;