bump minimum Zig to 0.16, update README, build script, and assimp to 5.4.0

.gitignore

@@ -1,3 +1,4 @@
 zig-cache/
 .zig-cache/
 zig-out/
+zig-pkg/

README.md

@@ -1,28 +1,40 @@
 # OpenAssetImporter Library Binding for Zig
 
-This repo is a build sdk for [Assimp](https://github.com/assimp/assimp) to be used with the Zig build system:
+This repo packages [Assimp](https://github.com/assimp/assimp) 5.4.0 for the Zig build system (requires Zig 0.16.0+).
+
+## Add the dependency
+
+```sh
+zig fetch --save git+https://github.com/allyourcodebase/assimp.git
+```
+
+Or add it manually to `build.zig.zon`:
+
+```zig
+.dependencies = .{
+    .zig_assimp = .{
+        .url = "https://github.com/allyourcodebase/assimp/archive/<commit>.tar.gz",
+        .hash = "...",
+    },
+},
+```
+
+## Use it in `build.zig`
 
 ```zig
-const std = @import("std");
-
-// Import the SDK
-const Assimp = @import("Sdk.zig");
-
-pub fn build(b: *std.build.Builder) void {
-    const mode = b.standardReleaseOptions();
-
-    const exe = b.addExecutable("static-example", null);
-    exe.setBuildMode(mode);
-    exe.addCSourceFile("src/example.cpp", &[_][]const u8{"-std=c++17"});
-    exe.linkLibC();
-    exe.linkLibCpp();
-    exe.install();
-
-    // Create a new instance
-    var sdk = Assimp.init(b);
-
-    // And link Assimp statically to our exe and enable a default set of
-    // formats.
-    sdk.addTo(exe, .static, Assimp.FormatSet.default);
-}
-```
+const assimp_dep = b.dependency("zig_assimp", .{
+    .target = target,
+    .optimize = optimize,
+    .formats = @as([]const u8, "STL,Obj,FBX"), // or "all"
+    .double = false,
+});
+
+exe.linkLibrary(assimp_dep.artifact("assimp"));
+```
+
+Headers (including the generated `assimp/config.h`) are installed on the artifact, so `linkLibrary` is enough — no extra include paths needed.
+
+## Options
+
+- `formats` — comma-separated list of importers/exporters to compile, or `all`. Empty (default) builds none. See `build.zig` for the full list.
+- `double` — store data as `double` instead of `float`.

build.zig

@@ -1,14 +1,4 @@
 const std = @import("std");
-const builtin = @import("builtin");
-
-const zig_version = builtin.zig_version;
-fn lazy_from_path(path_chars: []const u8, owner: *std.Build) std.Build.LazyPath {
-    if (zig_version.major > 0 or zig_version.minor >= 13) {
-        return std.Build.LazyPath{ .src_path = .{ .sub_path = path_chars, .owner = owner } };
-    } else if (zig_version.minor >= 12) {
-        return std.Build.LazyPath{ .path = path_chars };
-    } else unreachable;
-}
 
 pub fn build(b: *std.Build) !void {
     const target = b.standardTargetOptions(.{});
@@ -32,9 +22,9 @@ pub fn build(b: *std.Build) !void {
         lib.root_module.addCMacro("OPENDDL_STATIC_LIBARY", "");
     }
 
-    lib.linkLibC();
+    lib.root_module.link_libc = true;
     if (target.result.abi != .msvc) {
-        lib.linkLibCpp();
+        lib.root_module.link_libcpp = true;
     }
 
     const config_h = b.addConfigHeader(
@@ -46,7 +36,7 @@ pub fn build(b: *std.Build) !void {
     );
     lib.root_module.addConfigHeader(config_h);
     lib.root_module.addIncludePath(assimp.path("include"));
-    lib.root_module.addIncludePath(lazy_from_path("include", b));
+    lib.root_module.addIncludePath(b.path("include"));
 
     lib.root_module.addIncludePath(assimp.path(""));
     lib.root_module.addIncludePath(assimp.path("contrib"));
@@ -56,6 +46,7 @@ pub fn build(b: *std.Build) !void {
     lib.root_module.addIncludePath(assimp.path("contrib/unzip"));
     lib.root_module.addIncludePath(assimp.path("contrib/zlib"));
     lib.root_module.addIncludePath(assimp.path("contrib/openddlparser/include"));
+    lib.root_module.addIncludePath(assimp.path("contrib/utf8cpp/source"));
 
     lib.root_module.addCMacro("RAPIDJSON_HAS_STDSTRING", "1");
 
@@ -67,7 +58,7 @@ pub fn build(b: *std.Build) !void {
     );
 
     lib.installHeadersDirectory(
-        lazy_from_path("include", b),
+        b.path("include"),
         "",
         .{ .include_extensions = &.{ ".h", ".inl", ".hpp" } },
     );
@@ -152,10 +143,10 @@ pub fn build(b: *std.Build) !void {
         .files = &[_][]const u8{"src/example.cpp"},
         .flags = &[_][]const u8{"-std=c++17"},
     });
-    example_cpp.linkLibrary(lib);
-    example_cpp.linkLibC();
+    example_cpp.root_module.linkLibrary(lib);
+    example_cpp.root_module.link_libc = true;
     if (target.result.abi != .msvc) {
-        example_cpp.linkLibCpp();
+        example_cpp.root_module.link_libcpp = true;
     }
     example_cpp.root_module.addIncludePath(assimp.path("include"));
     if (target.result.os.tag == .windows) {
@@ -175,8 +166,8 @@ pub fn build(b: *std.Build) !void {
         .files = &[_][]const u8{"src/example.c"},
         .flags = &[_][]const u8{"-std=c99"},
     });
-    example_c.linkLibrary(lib);
-    example_c.linkLibC();
+    example_c.root_module.linkLibrary(lib);
+    example_c.root_module.link_libc = true;
     example_c.root_module.addIncludePath(assimp.path("include"));
     if (target.result.os.tag == .windows) {
         example_c.root_module.addCMacro("_WINDOWS", "");

build.zig.zon

@@ -1,6 +1,6 @@
 .{
     .name = .zig_assimp,
-    .version = "5.3.1",
+    .version = "5.4.0",
     .fingerprint = 0x3e92a7cfbee36ef8,
     .paths = .{
         "build.zig",
@@ -10,11 +10,11 @@
         "include",
         "src",
     },
-    .minimum_zig_version = "0.15.1",
+    .minimum_zig_version = "0.16.0",
     .dependencies = .{
         .assimp = .{
-            .url = "https://github.com/assimp/assimp/archive/v5.3.1.tar.gz",
-            .hash = "N-V-__8AACI1agiq-JJtHIb-h7Td-FFZ-HgD1WOpv1g_Vl3w",
+            .url = "https://github.com/assimp/assimp/archive/v5.4.0.tar.gz",
+            .hash = "N-V-__8AACoWewhH5OBlKGMhvR9XlApEzxGY07K8ZCn7TlH9",
         },
     },
 }