Index: common.gypi
--- common.gypi.orig	2021-05-19 09:08:25.000000000 +0200
+++ common.gypi	2021-05-20 20:16:27.116128000 +0200
@@ -173,7 +173,7 @@
             }],
           ],
         },
-        'cflags': [ '-O3' ],
+        'cflags': [ '-O2' ],
         'conditions': [
           ['OS=="linux"', {
             'conditions': [
@@ -374,7 +374,7 @@
         'ldflags': [ '-pthread' ],
       }],
       [ 'OS in "linux freebsd openbsd solaris android aix cloudabi"', {
-        'cflags': [ '-Wall', '-Wextra', '-Wno-unused-parameter', ],
+        'cflags': [ '-Wno-unused-parameter', ],
         'cflags_cc': [ '-fno-rtti', '-fno-exceptions', '-std=gnu++14' ],
         'defines': [ '__STDC_FORMAT_MACROS' ],
         'ldflags': [ '-rdynamic' ],
@@ -486,10 +486,7 @@
             '-fno-strict-aliasing',
           ],
           'WARNING_CFLAGS': [
-            '-Wall',
-            '-Wendif-labels',
-            '-W',
-            '-Wno-unused-parameter',
+            '-Wno-unused-parameter'
           ],
         },
         'target_conditions': [
Index: deps/uv/common.gypi
--- deps/uv/common.gypi.orig	2021-05-19 09:08:27.000000000 +0200
+++ deps/uv/common.gypi	2021-05-20 20:15:57.498550000 +0200
@@ -46,7 +46,7 @@
       'Release': {
         'defines': [ 'NDEBUG' ],
         'cflags': [
-          '-O3',
+          '-O2',
         ],
         'msvs_settings': {
           'VCCLCompilerTool': {
Index: deps/uv/uv.gyp
--- deps/uv/uv.gyp.orig	2021-05-19 09:08:27.000000000 +0200
+++ deps/uv/uv.gyp	2021-05-20 20:15:57.498695000 +0200
@@ -178,7 +178,7 @@
             'src/unix/udp.c',
           ],
           'link_settings': {
-            'libraries': [ '-lm' ],
+            'libraries': [ '-lz', '-lm' ],
             'conditions': [
               ['OS=="solaris"', {
                 'ldflags': [ '-pthreads' ],
Index: deps/v8/src/base/platform/platform-freebsd.cc
--- deps/v8/src/base/platform/platform-freebsd.cc.orig	2021-05-19 09:08:27.000000000 +0200
+++ deps/v8/src/base/platform/platform-freebsd.cc	2021-05-20 20:15:57.498828000 +0200
@@ -28,6 +28,7 @@
 #include <strings.h>    // index
 
 #include <cmath>
+#include <cstdio>
 
 #undef MAP_TYPE
 
Index: deps/v8/src/wasm/wasm-result.cc
--- deps/v8/src/wasm/wasm-result.cc.orig	2021-05-19 09:08:27.000000000 +0200
+++ deps/v8/src/wasm/wasm-result.cc	2021-05-20 20:15:57.498953000 +0200
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <cstdarg>
+
 #include "src/wasm/wasm-result.h"
 
 #include "src/execution/isolate-inl.h"
Index: lib/dns.js
--- lib/dns.js.orig	2021-05-19 09:08:29.000000000 +0200
+++ lib/dns.js	2021-05-20 20:15:57.499085000 +0200
@@ -150,6 +150,10 @@
   req.hostname = hostname;
   req.oncomplete = all ? onlookupall : onlookup;
 
+  /*  FreeBSD getaddrinfo(3) knows AI_V4MAPPED, but dislikes it  */
+  if (process.platform === "freebsd")
+      hints &= ~(exports.V4MAPPED);
+
   const err = cares.getaddrinfo(
     req, toASCII(hostname), family, hints, verbatim
   );
Index: lib/internal/modules/cjs/loader.js
--- lib/internal/modules/cjs/loader.js.orig	2021-05-19 09:08:29.000000000 +0200
+++ lib/internal/modules/cjs/loader.js	2021-05-20 20:15:57.499301000 +0200
@@ -1219,7 +1219,10 @@
     path.resolve(process.execPath, '..') :
     path.resolve(process.execPath, '..', '..');
 
-  const paths = [path.resolve(prefixDir, 'lib', 'node')];
+  const paths = [
+      path.resolve(prefixDir, '..', 'lib', 'node', 'usr'),
+      path.resolve(prefixDir, '..', 'lib', 'node', 'pkg')
+  ];
 
   if (homeDir) {
     ArrayPrototypeUnshift(paths, path.resolve(homeDir, '.node_libraries'));
Index: src/crypto/crypto_aes.cc
--- src/crypto/crypto_aes.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_aes.cc	2021-05-20 20:15:57.499447000 +0200
@@ -10,8 +10,8 @@
 #include "threadpoolwork-inl.h"
 #include "v8.h"
 
-#include <openssl/bn.h>
-#include <openssl/aes.h>
+#include "openssl/bn.h"
+#include "openssl/aes.h"
 
 #include <vector>
 
Index: src/crypto/crypto_bio.cc
--- src/crypto/crypto_bio.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_bio.cc	2021-05-20 20:15:57.499576000 +0200
@@ -25,7 +25,7 @@
 #include "allocated_buffer-inl.h"
 #include "util-inl.h"
 
-#include <openssl/bio.h>
+#include "openssl/bio.h"
 
 #include <climits>
 #include <cstring>
Index: src/crypto/crypto_common.cc
--- src/crypto/crypto_common.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_common.cc	2021-05-20 20:15:57.499748000 +0200
@@ -11,14 +11,14 @@
 #include "memory_tracker-inl.h"
 #include "v8.h"
 
-#include <openssl/ec.h>
-#include <openssl/ecdh.h>
-#include <openssl/evp.h>
-#include <openssl/pem.h>
-#include <openssl/x509v3.h>
-#include <openssl/hmac.h>
-#include <openssl/rand.h>
-#include <openssl/pkcs12.h>
+#include "openssl/ec.h"
+#include "openssl/ecdh.h"
+#include "openssl/evp.h"
+#include "openssl/pem.h"
+#include "openssl/x509v3.h"
+#include "openssl/hmac.h"
+#include "openssl/rand.h"
+#include "openssl/pkcs12.h"
 
 #include <string>
 #include <unordered_map>
Index: src/crypto/crypto_common.h
--- src/crypto/crypto_common.h.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_common.h	2021-05-20 20:15:57.499861000 +0200
@@ -5,8 +5,8 @@
 
 #include "node_crypto.h"
 #include "v8.h"
-#include <openssl/ssl.h>
-#include <openssl/x509v3.h>
+#include "openssl/ssl.h"
+#include "openssl/x509v3.h"
 
 #include <string>
 #include <unordered_map>
Index: src/crypto/crypto_context.cc
--- src/crypto/crypto_context.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_context.cc	2021-05-20 20:15:57.500051000 +0200
@@ -11,10 +11,10 @@
 #include "util.h"
 #include "v8.h"
 
-#include <openssl/x509.h>
-#include <openssl/pkcs12.h>
+#include "openssl/x509.h"
+#include "openssl/pkcs12.h"
 #ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
+#include "openssl/engine.h"
 #endif  // !OPENSSL_NO_ENGINE
 
 namespace node {
Index: src/crypto/crypto_dsa.cc
--- src/crypto/crypto_dsa.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_dsa.cc	2021-05-20 20:15:57.500162000 +0200
@@ -7,8 +7,8 @@
 #include "threadpoolwork-inl.h"
 #include "v8.h"
 
-#include <openssl/bn.h>
-#include <openssl/dsa.h>
+#include "openssl/bn.h"
+#include "openssl/dsa.h"
 
 #include <cstdio>
 
Index: src/crypto/crypto_keys.h
--- src/crypto/crypto_keys.h.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_keys.h	2021-05-20 20:15:57.500288000 +0200
@@ -11,7 +11,7 @@
 #include "node_worker.h"
 #include "v8.h"
 
-#include <openssl/evp.h>
+#include "openssl/evp.h"
 
 #include <memory>
 #include <string>
Index: src/crypto/crypto_rsa.cc
--- src/crypto/crypto_rsa.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_rsa.cc	2021-05-20 20:15:57.500419000 +0200
@@ -10,8 +10,8 @@
 #include "threadpoolwork-inl.h"
 #include "v8.h"
 
-#include <openssl/bn.h>
-#include <openssl/rsa.h>
+#include "openssl/bn.h"
+#include "openssl/rsa.h"
 
 namespace node {
 
Index: src/crypto/crypto_spkac.h
--- src/crypto/crypto_spkac.h.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_spkac.h	2021-05-20 20:15:57.500520000 +0200
@@ -6,7 +6,7 @@
 #include "env.h"
 #include "v8.h"
 
-#include <openssl/evp.h>
+#include "openssl/evp.h"
 
 namespace node {
 namespace crypto {
Index: src/crypto/crypto_timing.cc
--- src/crypto/crypto_timing.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_timing.cc	2021-05-20 20:15:57.500619000 +0200
@@ -5,7 +5,7 @@
 #include "v8.h"
 #include "node.h"
 
-#include <openssl/crypto.h>
+#include "openssl/crypto.h"
 
 namespace node {
 
Index: src/crypto/crypto_tls.h
--- src/crypto/crypto_tls.h.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_tls.h	2021-05-20 20:15:57.500743000 +0200
@@ -32,7 +32,7 @@
 #include "stream_wrap.h"
 #include "v8.h"
 
-#include <openssl/ssl.h>
+#include "openssl/ssl.h"
 
 #include <string>
 
Index: src/crypto/crypto_util.h
--- src/crypto/crypto_util.h.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/crypto/crypto_util.h	2021-05-20 20:15:57.500905000 +0200
@@ -12,15 +12,15 @@
 #include "v8.h"
 #include "string_bytes.h"
 
-#include <openssl/err.h>
-#include <openssl/evp.h>
-#include <openssl/ec.h>
-#include <openssl/kdf.h>
-#include <openssl/rsa.h>
-#include <openssl/dsa.h>
-#include <openssl/ssl.h>
+#include "openssl/err.h"
+#include "openssl/evp.h"
+#include "openssl/ec.h"
+#include "openssl/kdf.h"
+#include "openssl/rsa.h"
+#include "openssl/dsa.h"
+#include "openssl/ssl.h"
 #ifndef OPENSSL_NO_ENGINE
-#  include <openssl/engine.h>
+#  include "openssl/engine.h"
 #endif  // !OPENSSL_NO_ENGINE
 // The FIPS-related functions are only available
 // when the OpenSSL itself was compiled with FIPS support.
Index: src/inspector_socket_server.cc
--- src/inspector_socket_server.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/inspector_socket_server.cc	2021-05-20 20:15:57.501057000 +0200
@@ -20,7 +20,7 @@
                             bool include_protocol);
 namespace {
 
-static const uint8_t PROTOCOL_JSON[] = {
+static uint8_t PROTOCOL_JSON[] = {
   #include "v8_inspector_protocol_json.h"  // NOLINT(build/include_order)
 };
 
Index: src/node_constants.cc
--- src/node_constants.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/node_constants.cc	2021-05-20 20:15:57.501235000 +0200
@@ -36,10 +36,10 @@
 
 
 #if HAVE_OPENSSL
-#include <openssl/ec.h>
-#include <openssl/ssl.h>
+#include "openssl/ec.h"
+#include "openssl/ssl.h"
 #ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
+#include "openssl/engine.h"
 #endif  // !OPENSSL_NO_ENGINE
 #endif  // HAVE_OPENSSL
 
Index: src/node_metadata.cc
--- src/node_metadata.cc.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/node_metadata.cc	2021-05-20 20:15:57.501339000 +0200
@@ -10,7 +10,7 @@
 #include "zlib.h"
 
 #if HAVE_OPENSSL
-#include <openssl/opensslv.h>
+#include "openssl/opensslv.h"
 #endif  // HAVE_OPENSSL
 
 #ifdef OPENSSL_INFO_QUIC
Index: src/util.h
--- src/util.h.orig	2021-05-19 09:08:29.000000000 +0200
+++ src/util.h	2021-05-20 20:15:57.501507000 +0200
@@ -150,14 +150,23 @@
     }                                                                         \
   } while (0)
 
+#undef  CHECK_EQ
 #define CHECK_EQ(a, b) CHECK((a) == (b))
+#undef  CHECK_GE
 #define CHECK_GE(a, b) CHECK((a) >= (b))
+#undef  CHECK_GT
 #define CHECK_GT(a, b) CHECK((a) > (b))
+#undef  CHECK_LE
 #define CHECK_LE(a, b) CHECK((a) <= (b))
+#undef  CHECK_LT
 #define CHECK_LT(a, b) CHECK((a) < (b))
+#undef  CHECK_NE
 #define CHECK_NE(a, b) CHECK((a) != (b))
+#undef  CHECK_NULL
 #define CHECK_NULL(val) CHECK((val) == nullptr)
+#undef  CHECK_NOT_NULL
 #define CHECK_NOT_NULL(val) CHECK((val) != nullptr)
+#undef  CHECK_IMPLIES
 #define CHECK_IMPLIES(a, b) CHECK(!(a) || (b))
 
 #ifdef DEBUG
@@ -185,6 +194,7 @@
 #endif
 
 
+#undef  UNREACHABLE
 #define UNREACHABLE(...)                                                      \
   ERROR_AND_ABORT("Unreachable code reached" __VA_OPT__(": ") __VA_ARGS__)
 
Index: tools/install.py
--- tools/install.py.orig	2021-05-19 09:08:29.000000000 +0200
+++ tools/install.py	2021-05-20 20:15:57.501644000 +0200
@@ -147,10 +147,7 @@
   action(['deps/v8/tools/gdbinit'], 'share/doc/node/')
   action(['deps/v8/tools/lldb_commands.py'], 'share/doc/node/')
 
-  if 'freebsd' in sys.platform or 'openbsd' in sys.platform:
-    action(['doc/node.1'], 'man/man1/')
-  else:
-    action(['doc/node.1'], 'share/man/man1/')
+  action(['doc/node.1'], 'man/man1/')
 
   if 'true' == variables.get('node_install_npm'): npm_files(action)
 
Index: tools/v8_gypfiles/toolchain.gypi
--- tools/v8_gypfiles/toolchain.gypi.orig	2021-05-19 09:08:30.000000000 +0200
+++ tools/v8_gypfiles/toolchain.gypi	2021-05-20 20:15:57.501867000 +0200
@@ -1087,12 +1087,6 @@
       ['OS=="solaris"', {
         'defines': [ '__C99FEATURES__=1' ],  # isinf() etc.
       }],
-      ['OS=="freebsd" or OS=="openbsd"', {
-        'cflags': [ '-I/usr/local/include' ],
-      }],
-      ['OS=="netbsd"', {
-        'cflags': [ '-I/usr/pkg/include' ],
-      }],
       ['OS=="aix"', {
         'defines': [
           # Support for malloc(0)
@@ -1235,8 +1229,8 @@
                   # Don't use -O3 with sanitizers.
                   ['asan==0 and msan==0 and lsan==0 \
                 and tsan==0 and ubsan==0 and ubsan_vptr==0', {
-                    'cflags': ['-O3'],
-                    'cflags!': ['-O2'],
+                    'cflags': ['-O2'],
+                    'cflags!': ['-O3'],
                   }, {
                      'cflags': ['-O2'],
                      'cflags!': ['-O3'],
@@ -1283,8 +1277,8 @@
               # Don't use -O3 with sanitizers.
               ['asan==0 and msan==0 and lsan==0 \
                 and tsan==0 and ubsan==0 and ubsan_vptr==0', {
-                'cflags': ['-O3'],
-                'cflags!': ['-O2'],
+                'cflags': ['-O2'],
+                'cflags!': ['-O3'],
               }, {
                 'cflags': ['-O2'],
                 'cflags!': ['-O3'],