allow disabling texture/ffmpeg support at build time

1 files changed, 15 insertions, 4 deletions

diff --git a/build.zig b/build.zig
index db0145c..9c842a6 100644
--- a/build.zig
+++ b/build.zig
@@ -4,21 +4,32 @@ pub fn build(b: *std.Build) void {
     const optimize = b.standardOptimizeOption(.{});
     const target = b.standardTargetOptions(.{});
 
+    const have_ffmpeg = b.option(bool, "textures", "enable texture/video support (needs ffmpeg)") orelse true;
+
     const exe = b.addExecutable(.{
         .name = "glsl-view",
         .root_source_file = b.path("src/main.zig"),
         .target = target,
         .optimize = optimize,
     });
+
+    const options = b.addOptions();
+    options.addOption(bool, "have_ffmpeg", have_ffmpeg);
+    exe.root_module.addOptions("build_config", options);
+
     exe.linkLibC();
     exe.linkSystemLibrary("yaml-0.1");
     exe.linkSystemLibrary("glfw3");
     exe.linkSystemLibrary("epoxy");
     exe.linkSystemLibrary("liblo");
-    exe.linkSystemLibrary("libavcodec");
-    exe.linkSystemLibrary("libavformat");
-    exe.linkSystemLibrary("libavutil");
-    exe.linkSystemLibrary("libswscale");
+
+    if (have_ffmpeg) {
+        exe.linkSystemLibrary("libavcodec");
+        exe.linkSystemLibrary("libavformat");
+        exe.linkSystemLibrary("libavutil");
+        exe.linkSystemLibrary("libswscale");
+    }
+
     b.installArtifact(exe);
 
     const run_cmd = b.addRunArtifact(exe);