use lazyDependency to optimize dependency fetching

Helps hexops/mach#1197 Signed-off-by: Stephen Gutekanst <[email protected]>
hexops · Apr 20, 2024 · ad7313d · ad7313d
1 parent a62aa64
commit ad7313d
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Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/build.zig b/build.zig
@@ -7,8 +7,6 @@ pub fn build(b: *std.Build) void {
     const use_system_zlib = b.option(bool, "use_system_zlib", "Use system zlib") orelse false;
     const enable_brotli = b.option(bool, "enable_brotli", "Build Brotli") orelse true;
 
-    const brotli_dep = b.dependency("brotli", .{ .target = target, .optimize = optimize });
-
     const lib = b.addStaticLibrary(.{
         .name = "freetype",
         .target = target,
@@ -24,7 +22,10 @@ pub fn build(b: *std.Build) void {
 
     if (enable_brotli) {
         lib.defineCMacro("FT_CONFIG_OPTION_USE_BROTLI", "1");
-        lib.linkLibrary(brotli_dep.artifact("brotli"));
+        if (b.lazyDependency("brotli", .{
+            .target = target,
+            .optimize = optimize,
+        })) |dep| lib.linkLibrary(dep.artifact("brotli"));
     }
 
     lib.defineCMacro("HAVE_UNISTD_H", "1");

diff --git a/build.zig.zon b/build.zig.zon
@@ -15,6 +15,7 @@
         .brotli = .{
             .url = "https://pkg.machengine.org/brotli/538f4c5b085bb53c84e39860305442abd0436be5.tar.gz",
             .hash = "12202a0f156a1d5d25a97468de318a99451a77b930f584d4edeff152259a875a4a75",
+            .lazy = true,
         },
     },
 }