--- build/config/compiler/BUILD.gn.orig	2026-09-30 02:11:56 UTC
+++ build/config/compiler/BUILD.gn
@@ -588,7 +588,7 @@ config("compiler") {
   if (is_clang) {
     # Flags for diagnostics.
     cflags += [ "-fcolor-diagnostics" ]
-    if (!is_wasm) {
+    if (!is_wasm && !is_bsd) {
       if (!is_win) {
         cflags += [ "-fdiagnostics-show-inlining-chain" ]
       } else {
@@ -629,7 +629,7 @@ config("compiler") {
     # The performance improvement does not seem worth the risk. See
     # https://crbug.com/484082200 for background and https://crrev.com/c/7593035
     # for discussion.
-    if (!is_wasm) {
+    if (!is_wasm && !is_bsd) {
       cflags += [ "-fno-lifetime-dse" ]
     }
 
@@ -2868,8 +2868,9 @@ config("split_dwarf") {
   # thinlto requires -gsplit-dwarf in ldflags.
   if (use_thin_lto && !is_apple) {
     ldflags = split_dwarf_flags
-  } else {
+  } else if (!is_bsd) {
     # .dwo files are generated when ThinLTO is not used.
+    # c_additional_outputs requires GN newer than ports devel/gn.
     c_additional_outputs =
         [ "{{target_out_dir}}/{{label_name}}/{{source_name_part}}.dwo" ]
   }