--- src/3rdparty/chromium/build/config/compiler/BUILD.gn.orig	2026-08-11 12:42:19 UTC
+++ src/3rdparty/chromium/build/config/compiler/BUILD.gn
@@ -200,7 +200,7 @@ declare_args() {
   # This greatly reduces the size of debug builds, at the cost of
   # debugging information which is required by some specialized
   # debugging tools.
-  simple_template_names = is_clang && !is_win && !is_apple
+  simple_template_names = is_clang && !is_win && !is_apple && !is_bsd
 
   # This switch is used to enable -Wexit-time-destructors by default. This
   # warning serves as a flip switch to allow a gradual migration of targets
@@ -297,13 +297,16 @@ config("no_unresolved_symbols") {
 # Compiler instrumentation can introduce dependencies in DSOs to symbols in
 # the executable they are loaded into, so they are unresolved at link-time.
 config("no_unresolved_symbols") {
-  if (!using_sanitizer &&
+  if (!using_sanitizer && !is_bsd &&
       (is_linux || is_chromeos || is_android || is_fuchsia)) {
     ldflags = [
       "-Wl,-z,defs",
       "-Wl,--as-needed",
     ]
   }
+  if (current_cpu == "x86" && is_openbsd) {
+    ldflags = [ "-Wl,-z,notext", "-Wl,--strip-all" ]
+  }
 }
 
 # compiler ---------------------------------------------------------------------
@@ -628,6 +631,10 @@ config("compiler") {
     }
   }
 
+  if (is_openbsd) {
+    ldflags += [ "-Wl,-z,wxneeded" ]
+  }
+
   # Linux-specific compiler flags setup.
   # ------------------------------------
   if (use_gold) {
@@ -1377,7 +1384,7 @@ config("compiler_cpu_abi") {
     # CPU architecture. We may or may not be doing a cross compile now, so for
     # simplicity we always explicitly set the architecture.
     if (current_cpu == "x64") {
-      if (is_clang && !is_android && !is_fuchsia && !is_chromeos_device) {
+      if (is_clang && !is_android && !is_fuchsia && !is_chromeos_device && !is_bsd) {
         cflags += [ "--target=x86_64-unknown-linux-gnu" ]
         ldflags += [ "--target=x86_64-unknown-linux-gnu" ]
       } else {
@@ -1386,7 +1393,7 @@ config("compiler_cpu_abi") {
       }
       cflags += [ "-msse3" ]
     } else if (current_cpu == "x86") {
-      if (is_clang && !is_android && !is_chromeos_device) {
+      if (is_clang && !is_android && !is_chromeos_device && !is_bsd) {
         cflags += [ "--target=i386-unknown-linux-gnu" ]
         ldflags += [ "--target=i386-unknown-linux-gnu" ]
       } else {
@@ -1398,7 +1405,7 @@ config("compiler_cpu_abi") {
         "-msse3",
       ]
     } else if (current_cpu == "arm") {
-      if (is_clang && !is_android && !is_chromeos_device) {
+      if (is_clang && !is_android && !is_chromeos_device && !is_bsd) {
         cflags += [ "--target=arm-linux-gnueabihf" ]
         ldflags += [ "--target=arm-linux-gnueabihf" ]
       }
@@ -1413,7 +1420,7 @@ config("compiler_cpu_abi") {
         cflags += [ "-mtune=$arm_tune" ]
       }
     } else if (current_cpu == "arm64") {
-      if (is_clang && !is_android && !is_fuchsia && !is_chromeos_device && !is_ohos) {
+      if (is_clang && !is_android && !is_fuchsia && !is_chromeos_device && !is_ohos && !is_bsd) {
         cflags += [ "--target=aarch64-linux-gnu" ]
         ldflags += [ "--target=aarch64-linux-gnu" ]
       }
@@ -1658,7 +1665,7 @@ config("compiler_cpu_abi") {
           cflags += [ "-maix64" ]
           ldflags += [ "-maix64" ]
         }
-      } else if (is_clang) {
+      } else if (is_clang && !is_bsd) {
         cflags += [ "--target=powerpc64le-unknown-linux-gnu" ]
         ldflags += [ "--target=powerpc64le-unknown-linux-gnu" ]
       } else {
@@ -1812,7 +1819,7 @@ config("clang_revision") {
 }
 
 config("clang_revision") {
-  if (is_clang && clang_base_path == default_clang_base_path &&
+  if (is_clang && !is_bsd && clang_base_path == default_clang_base_path &&
       current_os != "zos") {
     _perform_consistency_checks = current_toolchain == default_toolchain
     if (llvm_force_head_revision) {
@@ -2403,9 +2410,6 @@ config("default_warnings") {
 
       # TODO(crbug.com/40284799): Fix and re-enable.
       "-Wno-thread-safety-reference-return",
-
-      # TODO(crbug.com/376641662): Fix and re-enable.
-      "-Wno-nontrivial-memcall",
     ]
 
     cflags += [ "-Wno-deprecated-declarations" ]
@@ -3201,7 +3205,7 @@ config("afdo") {
 # There are some targeted places that AFDO regresses, so we provide a separate
 # config to allow AFDO to be disabled per-target.
 config("afdo") {
-  if (is_clang) {
+  if (is_clang && !is_bsd) {
     cflags = []
     if (clang_emit_debug_info_for_profiling) {
       # Add the following flags to generate debug info for profiling.
@@ -3228,7 +3232,7 @@ config("afdo") {
       cflags += [ "-Wno-backend-plugin" ]
       inputs = [ _clang_sample_profile ]
     }
-  } else if (auto_profile_path != "" && is_a_target_toolchain) {
+  } else if (auto_profile_path != "" && is_a_target_toolchain && !is_bsd) {
     cflags = [ "-fauto-profile=${auto_profile_path}" ]
     inputs = [ auto_profile_path ]
   }