From 8275c771c8f525b7f2917d1f4ade9b5e684d0a12 Mon Sep 17 00:00:00 2001
From: xavier <xavierb@gmail.com>
Date: Fri, 21 May 2021 08:57:14 +0200
Subject: [PATCH] zig cc: expose header files when linking libunwind

---
 src/Compilation.zig | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Compilation.zig b/src/Compilation.zig
index 023a54ca8d4b969f803828f57674de9b964539e5..e20ee038c12f5834ee5c03043e70c4cec18ab6b4 100644
--- a/src/Compilation.zig
+++ b/src/Compilation.zig
@@ -2776,6 +2776,15 @@ pub fn addCCArgs(
         try argv.append("-D_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS");
     }
 
+    if (comp.bin_file.options.link_libunwind) {
+        const libunwind_include_path = try std.fs.path.join(arena, &[_][]const u8{
+            comp.zig_lib_directory.path.?, "libunwind", "include",
+        });
+
+        try argv.append("-isystem");
+        try argv.append(libunwind_include_path);
+    }
+
     const llvm_triple = try @import("codegen/llvm.zig").targetTriple(arena, target);
     try argv.appendSlice(&[_][]const u8{ "-target", llvm_triple });
 
-- 
2.54.0