$NetBSD$

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

--- v8/BUILD.gn.orig	2025-02-24 19:59:26.000000000 +0000
+++ v8/BUILD.gn
@@ -929,6 +929,9 @@ external_v8_defines = [
   "V8_TARGET_OS_MACOS",
   "V8_TARGET_OS_WIN",
   "V8_TARGET_OS_CHROMEOS",
+  "V8_TARGET_OS_OPENBSD",
+  "V8_TARGET_OS_FREEBSD",
+  "V8_TARGET_OS_NETBSD",
 ]
 
 enabled_external_v8_defines = [
@@ -1005,6 +1008,15 @@ if (target_os == "android") {
 } else if (target_os == "chromeos") {
   enabled_external_v8_defines += [ "V8_HAVE_TARGET_OS" ]
   enabled_external_v8_defines += [ "V8_TARGET_OS_CHROMEOS" ]
+} else if (target_os == "openbsd") {
+  enabled_external_v8_defines += [ "V8_HAVE_TARGET_OS" ]
+  enabled_external_v8_defines += [ "V8_TARGET_OS_OPENBSD" ]
+} else if (target_os == "freebsd") {
+  enabled_external_v8_defines += [ "V8_HAVE_TARGET_OS" ]
+  enabled_external_v8_defines += [ "V8_TARGET_OS_FREEBSD" ]
+} else if (target_os == "netbsd") {
+  enabled_external_v8_defines += [ "V8_HAVE_TARGET_OS" ]
+  enabled_external_v8_defines += [ "V8_TARGET_OS_NETBSD" ]
 }
 
 disabled_external_v8_defines = external_v8_defines - enabled_external_v8_defines
@@ -2447,6 +2459,23 @@ action("generate_bytecode_builtins_list"
   ]
 }
 
+action("run_paxctl_mksnapshot") {
+    deps = [ ":mksnapshot($v8_snapshot_toolchain)" ]
+
+    script = "tools/run-paxctl.py"
+    stamp = "$target_gen_dir/paxctl_stamp"
+    outputs = [ stamp ]
+
+    sources = []
+    data = []
+
+    args = [
+      rebase_path(stamp, root_build_dir), "/usr/sbin/paxctl", "+m", "./" + rebase_path(get_label_info(":mksnapshot($v8_snapshot_toolchain)",
+                                        "root_out_dir") + "/mksnapshot",
+                         root_build_dir),
+    ]
+}
+
 # Template to generate different V8 snapshots based on different runtime flags.
 # Can be invoked with run_mksnapshot(<name>). The target will resolve to
 # run_mksnapshot_<name>. If <name> is "default", no file suffixes will be used.
@@ -2465,7 +2494,11 @@ template("run_mksnapshot") {
     suffix = "_$name"
   }
   action("run_mksnapshot_" + name) {
-    deps = [ ":mksnapshot($v8_snapshot_toolchain)" ]
+    if (target_os == "netbsd") {
+      deps = [ ":mksnapshot($v8_snapshot_toolchain)", ":run_paxctl_mksnapshot" ]
+    } else {
+      deps = [ ":mksnapshot($v8_snapshot_toolchain)" ]
+    }
     if (v8_verify_deterministic_mksnapshot) {
       # We archive the snapshot executable when verifying snapshot
       # determinism to ease debugging.
@@ -2572,6 +2605,12 @@ template("run_mksnapshot") {
       if (!v8_enable_builtins_profiling && v8_enable_builtins_reordering) {
         args += [ "--reorder-builtins" ]
       }
+
+      if (v8_current_cpu == "x86") {
+        args -= [
+          "--abort-on-bad-builtin-profile-data",
+        ]
+      }
     }
 
     if (v8_enable_turboshaft_csa) {
@@ -4666,7 +4705,7 @@ v8_header_set("v8_internal_headers") {
       # iOS Xcode simulator builds run on an x64 target. iOS and macOS are both
       # based on Darwin and thus POSIX-compliant to a similar degree.
       if (is_linux || is_chromeos || is_mac || is_ios ||
-          target_os == "freebsd") {
+          target_os == "freebsd" || target_os == "netbsd") {
         sources += [ "src/trap-handler/handler-inside-posix.h" ]
       } else if (is_win) {
         sources += [ "src/trap-handler/handler-inside-win.h" ]
@@ -6030,7 +6069,7 @@ v8_source_set("v8_base_without_compiler"
       # iOS Xcode simulator builds run on an x64 target. iOS and macOS are both
       # based on Darwin and thus POSIX-compliant to a similar degree.
       if (is_linux || is_chromeos || is_mac || is_ios ||
-          target_os == "freebsd") {
+          target_os == "freebsd" || target_os == "netbsd") {
         sources += [
           "src/trap-handler/handler-inside-posix.cc",
           "src/trap-handler/handler-outside-posix.cc",
@@ -6645,7 +6684,7 @@ v8_component("v8_libbase") {
     }
   }
 
-  if (is_linux || is_chromeos) {
+  if ((is_linux || is_chromeos) && !is_bsd) {
     sources += [
       "src/base/debug/stack_trace_posix.cc",
       "src/base/platform/platform-linux.cc",
@@ -6656,6 +6695,27 @@ v8_component("v8_libbase") {
       "dl",
       "rt",
     ]
+  } else if (is_openbsd) {
+    sources += [
+      "src/base/debug/stack_trace_posix.cc",
+      "src/base/platform/platform-openbsd.cc",
+    ]
+    libs = [ "execinfo" ]
+  } else if (is_netbsd) {
+    sources += [
+      "src/base/debug/stack_trace_posix.cc",
+      "src/base/platform/platform-openbsd.cc",
+    ]
+    libs = [
+      "rt",
+      "execinfo",
+    ]
+  } else if (is_freebsd) {
+    sources += [
+      "src/base/debug/stack_trace_posix.cc",
+      "src/base/platform/platform-freebsd.cc",
+    ]
+    libs = [ "execinfo" ]
   } else if (current_os == "aix") {
     sources += [
       "src/base/debug/stack_trace_posix.cc",