From ccffc7f108dd9a18698f2c65523e4ab3bae1cd23 Mon Sep 17 00:00:00 2001
From: Alex Rønne Petersen <alex@alexrp.com>
Date: Wed, 26 Mar 2025 22:46:27 +0100
Subject: build.zig: Don't disable LTO when targeting MinGW.

We stopped building mingw32.lib with LTO recently, so this is no longer needed.
---
 build.zig | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/build.zig b/build.zig
index 15762f0ae8..cf216376de 100644
--- a/build.zig
+++ b/build.zig
@@ -214,11 +214,6 @@ pub fn build(b: *std.Build) !void {
 
     test_step.dependOn(&exe.step);
 
-    if (target.result.os.tag == .windows and target.result.abi == .gnu) {
-        // LTO is currently broken on mingw, this can be removed when it's fixed.
-        exe.want_lto = false;
-    }
-
     const use_llvm = b.option(bool, "use-llvm", "Use the llvm backend");
     exe.use_llvm = use_llvm;
     exe.use_lld = use_llvm;
-- 
cgit v1.2.3


From 2489b5fd74a436ebe0bcdcc5dccf9e89bac08a1c Mon Sep 17 00:00:00 2001
From: Alex Rønne Petersen <alex@alexrp.com>
Date: Wed, 26 Mar 2025 22:47:59 +0100
Subject: build.zig: Stop setting _WIN32_WINNT=0x601 (Windows 7) when targeting
 MinGW.

Our default minimum version for Windows has been Windows 10 for a while.
---
 build.zig | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/build.zig b/build.zig
index cf216376de..9794514f1f 100644
--- a/build.zig
+++ b/build.zig
@@ -354,11 +354,7 @@ pub fn build(b: *std.Build) !void {
             &[_][]const u8{ tracy_path, "public", "TracyClient.cpp" },
         );
 
-        // On mingw, we need to opt into windows 7+ to get some features required by tracy.
-        const tracy_c_flags: []const []const u8 = if (target.result.os.tag == .windows and target.result.abi == .gnu)
-            &[_][]const u8{ "-DTRACY_ENABLE=1", "-fno-sanitize=undefined", "-D_WIN32_WINNT=0x601" }
-        else
-            &[_][]const u8{ "-DTRACY_ENABLE=1", "-fno-sanitize=undefined" };
+        const tracy_c_flags: []const []const u8 = &.{ "-DTRACY_ENABLE=1", "-fno-sanitize=undefined" };
 
         exe.root_module.addIncludePath(.{ .cwd_relative = tracy_path });
         exe.root_module.addCSourceFile(.{ .file = .{ .cwd_relative = client_cpp }, .flags = tracy_c_flags });
-- 
cgit v1.2.3


From f71590d4c49493b533da81a55962c7429f5b5151 Mon Sep 17 00:00:00 2001
From: Alex Rønne Petersen <alex@alexrp.com>
Date: Wed, 26 Mar 2025 23:19:35 +0100
Subject: build.zig: Statically link LLVM libraries for experimental targets if
 requested.

---
 build.zig | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 55 insertions(+), 2 deletions(-)

diff --git a/build.zig b/build.zig
index 9794514f1f..6f045f086b 100644
--- a/build.zig
+++ b/build.zig
@@ -326,7 +326,12 @@ pub fn build(b: *std.Build) !void {
             try addCmakeCfgOptionsToExe(b, cfg, exe, use_zig_libcxx);
         } else {
             // Here we are -Denable-llvm but no cmake integration.
-            try addStaticLlvmOptionsToModule(exe.root_module);
+            try addStaticLlvmOptionsToModule(exe.root_module, .{
+                .llvm_has_m68k = llvm_has_m68k,
+                .llvm_has_csky = llvm_has_csky,
+                .llvm_has_arc = llvm_has_arc,
+                .llvm_has_xtensa = llvm_has_xtensa,
+            });
         }
         if (target.result.os.tag == .windows) {
             // LLVM depends on networking as of version 18.
@@ -809,7 +814,12 @@ fn addCmakeCfgOptionsToExe(
     }
 }
 
-fn addStaticLlvmOptionsToModule(mod: *std.Build.Module) !void {
+fn addStaticLlvmOptionsToModule(mod: *std.Build.Module, options: struct {
+    llvm_has_m68k: bool,
+    llvm_has_csky: bool,
+    llvm_has_arc: bool,
+    llvm_has_xtensa: bool,
+}) !void {
     // Adds the Zig C++ sources which both stage1 and stage2 need.
     //
     // We need this because otherwise zig_clang_cc1_main.cpp ends up pulling
@@ -833,6 +843,22 @@ fn addStaticLlvmOptionsToModule(mod: *std.Build.Module) !void {
         mod.linkSystemLibrary(lib_name, .{});
     }
 
+    if (options.llvm_has_m68k) for (llvm_libs_m68k) |lib_name| {
+        mod.linkSystemLibrary(lib_name, .{});
+    };
+
+    if (options.llvm_has_csky) for (llvm_libs_csky) |lib_name| {
+        mod.linkSystemLibrary(lib_name, .{});
+    };
+
+    if (options.llvm_has_arc) for (llvm_libs_arc) |lib_name| {
+        mod.linkSystemLibrary(lib_name, .{});
+    };
+
+    if (options.llvm_has_xtensa) for (llvm_libs_xtensa) |lib_name| {
+        mod.linkSystemLibrary(lib_name, .{});
+    };
+
     mod.linkSystemLibrary("z", .{});
     mod.linkSystemLibrary("zstd", .{});
 
@@ -1321,6 +1347,33 @@ const llvm_libs = [_][]const u8{
     "LLVMSupport",
     "LLVMDemangle",
 };
+const llvm_libs_m68k = [_][]const u8{
+    "LLVMM68kDisassembler",
+    "LLVMM68kAsmParser",
+    "LLVMM68kCodeGen",
+    "LLVMM68kDesc",
+    "LLVMM68kInfo",
+};
+const llvm_libs_csky = [_][]const u8{
+    "LLVMCSKYDisassembler",
+    "LLVMCSKYAsmParser",
+    "LLVMCSKYCodeGen",
+    "LLVMCSKYDesc",
+    "LLVMCSKYInfo",
+};
+const llvm_libs_arc = [_][]const u8{
+    "LLVMARCDisassembler",
+    "LLVMARCCodeGen",
+    "LLVMARCDesc",
+    "LLVMARCInfo",
+};
+const llvm_libs_xtensa = [_][]const u8{
+    "LLVMXtensaDisassembler",
+    "LLVMXtensaAsmParser",
+    "LLVMXtensaCodeGen",
+    "LLVMXtensaDesc",
+    "LLVMXtensaInfo",
+};
 
 fn generateLangRef(b: *std.Build) std.Build.LazyPath {
     const doctest_exe = b.addExecutable(.{
-- 
cgit v1.2.3