From 127b0921baa01c6fc256a5349ad174fc8d50652e Mon Sep 17 00:00:00 2001
From: Michael Dusan <michael.dusan@gmail.com>
Date: Sat, 1 Feb 2025 12:14:37 -0500
Subject: [PATCH] openbsd: fix stage3 link

- llvm requires libexecinfo which has conflicting symbols with libc++abi
- workaround is to link c++abi dynamically
---
 build.zig | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/build.zig b/build.zig
index e53135ccdf..9b3effc27a 100644
--- a/build.zig
+++ b/build.zig
@@ -791,24 +791,19 @@ fn addCmakeCfgOptionsToExe(
                 if (target.abi != .msvc) mod.link_libcpp = true;
             },
             .freebsd => {
-                if (static) {
-                    try addCxxKnownPath(b, cfg, exe, b.fmt("libc++.{s}", .{lib_suffix}), null, need_cpp_includes);
-                    try addCxxKnownPath(b, cfg, exe, b.fmt("libgcc_eh.{s}", .{lib_suffix}), null, need_cpp_includes);
-                } else {
-                    try addCxxKnownPath(b, cfg, exe, b.fmt("libc++.{s}", .{lib_suffix}), null, need_cpp_includes);
-                }
+                try addCxxKnownPath(b, cfg, exe, b.fmt("libc++.{s}", .{lib_suffix}), null, need_cpp_includes);
+                if (static) try addCxxKnownPath(b, cfg, exe, b.fmt("libgcc_eh.{s}", .{lib_suffix}), null, need_cpp_includes);
             },
             .openbsd => {
-                try addCxxKnownPath(b, cfg, exe, b.fmt("libc++.{s}", .{lib_suffix}), null, need_cpp_includes);
-                try addCxxKnownPath(b, cfg, exe, b.fmt("libc++abi.{s}", .{lib_suffix}), null, need_cpp_includes);
+                // - llvm requires libexecinfo which has conflicting symbols with libc++abi
+                // - only an issue with .a linking
+                // - workaround is to link c++abi dynamically
+                try addCxxKnownPath(b, cfg, exe, b.fmt("libc++.{s}", .{target.dynamicLibSuffix()[1..]}), null, need_cpp_includes);
+                try addCxxKnownPath(b, cfg, exe, b.fmt("libc++abi.{s}", .{target.dynamicLibSuffix()[1..]}), null, need_cpp_includes);
             },
             .netbsd, .dragonfly => {
-                if (static) {
-                    try addCxxKnownPath(b, cfg, exe, b.fmt("libstdc++.{s}", .{lib_suffix}), null, need_cpp_includes);
-                    try addCxxKnownPath(b, cfg, exe, b.fmt("libgcc_eh.{s}", .{lib_suffix}), null, need_cpp_includes);
-                } else {
-                    try addCxxKnownPath(b, cfg, exe, b.fmt("libstdc++.{s}", .{lib_suffix}), null, need_cpp_includes);
-                }
+                try addCxxKnownPath(b, cfg, exe, b.fmt("libstdc++.{s}", .{lib_suffix}), null, need_cpp_includes);
+                if (static) try addCxxKnownPath(b, cfg, exe, b.fmt("libgcc_eh.{s}", .{lib_suffix}), null, need_cpp_includes);
             },
             .solaris, .illumos => {
                 try addCxxKnownPath(b, cfg, exe, b.fmt("libstdc++.{s}", .{lib_suffix}), null, need_cpp_includes);