$NetBSD$

* Part of patchset to build electron on NetBSD
* Based on OpenBSD's chromium patches, and
  FreeBSD's electron patches

--- build/config/BUILDCONFIG.gn.orig	2025-02-24 19:59:26.000000000 +0000
+++ build/config/BUILDCONFIG.gn
@@ -123,6 +123,9 @@ if (current_os == "") {
 #   even if the value is overridden, which is wasteful. See first bullet.
 
 declare_args() {
+  is_electron_build = false
+  is_mas_build = false
+
   # Set to enable the official build level of optimization. This has nothing
   # to do with branding, but enables an additional level of optimization above
   # release (!is_debug). This might be better expressed as a tri-state
@@ -136,7 +139,8 @@ declare_args() {
   is_official_build = false
 
   # Set to true when compiling with the Clang compiler.
-  is_clang = current_os != "linux" ||
+  is_clang = current_os != "linux" || current_os == "openbsd" ||
+             current_os == "freebsd" || current_os == "netbsd" ||
              (current_cpu != "s390x" && current_cpu != "s390" &&
               current_cpu != "ppc64" && current_cpu != "ppc" &&
               current_cpu != "mips" && current_cpu != "mips64" &&
@@ -234,6 +238,12 @@ if (host_toolchain == "") {
     host_toolchain = "//build/toolchain/aix:$host_cpu"
   } else if (host_os == "zos") {
     host_toolchain = "//build/toolchain/zos:$host_cpu"
+  } else if (host_os == "openbsd") {
+    host_toolchain = "//build/toolchain/openbsd:clang_$host_cpu"
+  } else if (host_os == "freebsd") {
+    host_toolchain = "//build/toolchain/freebsd:clang_$host_cpu"
+  } else if (host_os == "netbsd") {
+    host_toolchain = "//build/toolchain/netbsd:clang_$host_cpu"
   } else {
     assert(false, "Unsupported host_os: $host_os")
   }
@@ -278,6 +288,8 @@ if (target_os == "android") {
   _default_toolchain = "//build/toolchain/aix:$target_cpu"
 } else if (target_os == "zos") {
   _default_toolchain = "//build/toolchain/zos:$target_cpu"
+} else if (target_os == "openbsd" || target_os == "freebsd" || target_os == "netbsd") {
+  _default_toolchain = host_toolchain
 } else {
   assert(false, "Unsupported target_os: $target_os")
 }
@@ -312,7 +324,12 @@ is_android = current_os == "android"
 is_chromeos = current_os == "chromeos"
 is_fuchsia = current_os == "fuchsia"
 is_ios = current_os == "ios"
-is_linux = current_os == "linux"
+is_linux = current_os == "linux" || current_os == "openbsd" ||
+           current_os == "freebsd" || current_os == "netbsd"
+is_openbsd = current_os == "openbsd"
+is_freebsd = current_os == "freebsd"
+is_netbsd = current_os == "netbsd"
+is_bsd = current_os == "openbsd" || current_os == "freebsd" || current_os == "netbsd"
 is_mac = current_os == "mac"
 is_nacl = current_os == "nacl"
 is_watchos = current_os == "watchos"