enable zig modules (llvm & clang)

build.zig

@@ -4,6 +4,17 @@ pub fn build(b: *std.Build) void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
+    _ = b.addModule("llvm", .{
+        .source_file = .{
+            .path = "src/llvm.zig",
+        },
+    });
+    _ = b.addModule("clang", .{
+        .source_file = .{
+            .path = "src/clang.zig",
+        },
+    });
+
     const examples = b.option(bool, "Examples", "Build all examples [default: false]") orelse false;
 
     if (examples) {
@@ -31,7 +42,7 @@ fn buildExample(b: *std.Build, i: BuildInfo) void {
     exe.defineCMacro("__STDC_CONSTANT_MACROS", null);
     exe.defineCMacro("__STDC_FORMAT_MACROS", null);
     exe.defineCMacro("__STDC_LIMIT_MACROS", null);
-    exe.addModule("llvm", module(b));
+    exe.addModule("llvm", b.modules.get("llvm").?);
     exe.linkSystemLibrary("z");
     switch (i.target.getOsTag()) {
         .linux => exe.linkSystemLibrary("LLVM-16"), // Ubuntu
@@ -57,14 +68,6 @@ fn buildExample(b: *std.Build, i: BuildInfo) void {
     run_step.dependOn(&run_cmd.step);
 }
 
-pub fn module(b: *std.Build) *std.Build.Module {
-    return b.createModule(.{
-        .source_file = .{
-            .path = "src/llvm.zig",
-        },
-    });
-}
-
 const BuildInfo = struct {
     filepath: []const u8,
     target: std.zig.CrossTarget,

src/clang.zig

@@ -0,0 +1,25 @@
+pub const CXString = @import("clang/CXString.zig");
+pub const CXErrorCode = @import("clang/CXErrorCode.zig");
+pub const CXSourceLocation = @import("clang/CXSourceLocation.zig");
+pub const CXFile = @import("clang/CXFile.zig");
+pub const CXDiagnostic = @import("clang/CXDiagnostic.zig");
+pub const CXIndex = @import("clang/Index.zig");
+pub const BuildSystem = @import("clang/BuildSystem.zig");
+pub const CXCompilationDatabase = @import("clang/CXCompilationDatabase.zig");
+pub const Rewrite = @import("clang/Rewrite.zig");
+pub const FatalErrorHandler = @import("clang/FatalErrorHandler.zig");
+pub const Documentation = @import("clang/Documentation.zig");
+
+test "all clang modules" {
+    _ = CXString;
+    _ = CXErrorCode;
+    _ = CXSourceLocation;
+    _ = CXIndex;
+    _ = CXFile;
+    _ = CXDiagnostic;
+    _ = CXCompilationDatabase;
+    _ = BuildSystem;
+    _ = Rewrite;
+    _ = FatalErrorHandler;
+    _ = Documentation;
+}

src/llvm.zig

@@ -1,5 +1,3 @@
-const std = @import("std");
-
 pub const analysis = @import("analysis.zig");
 pub const blake3 = @import("blake3.zig");
 pub const bitreader = @import("bitreader.zig");
@@ -47,7 +45,4 @@ test "all LLVM modules" {
     _ = target;
     _ = target_machine;
     _ = transform;
-
-    const testing = std.testing;
-    testing.refAllDeclsRecursive(@This());
 }