build: add support for IBM i platform

PR-URL: #19667
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

common.gypi

@@ -94,8 +94,17 @@
             'msvs_configuration_platform': 'x64',
           }],
           ['OS=="aix"', {
+            'variables': {'real_os_name': '<!(uname -s)',},
             'cflags': [ '-gxcoff' ],
             'ldflags': [ '-Wl,-bbigtoc' ],
+            'conditions': [
+              ['"<(real_os_name)"=="OS400"', {
+                'ldflags': [
+                  '-Wl,-blibpath:/QOpenSys/pkgs/lib:/QOpenSys/usr/lib',
+                  '-Wl,-brtl',
+                ],
+              }],
+            ],
           }],
           ['OS == "android"', {
             'cflags': [ '-fPIE' ],
@@ -345,6 +354,7 @@
             'ldflags!': [ '-pthread' ],
           }],
           [ 'OS=="aix"', {
+            'variables': {'real_os_name': '<!(uname -s)',},
             'conditions': [
               [ 'target_arch=="ppc"', {
                 'ldflags': [ '-Wl,-bmaxdata:0x60000000/dsa' ],
@@ -353,6 +363,12 @@
                 'cflags': [ '-maix64' ],
                 'ldflags': [ '-maix64' ],
               }],
+              ['"<(real_os_name)"=="OS400"', {
+                'ldflags': [
+                  '-Wl,-blibpath:/QOpenSys/pkgs/lib:/QOpenSys/usr/lib',
+                  '-Wl,-brtl',
+                ],
+              }],
             ],
             'ldflags': [ '-Wl,-bbigtoc' ],
             'ldflags!': [ '-rdynamic' ],

node.gyp

@@ -970,6 +970,7 @@
 
   'conditions': [
     [ 'OS=="aix" and node_shared=="true"', {
+      'variables': {'real_os_name': '<!(uname -s)',},
       'targets': [
         {
           'target_name': 'node_aix_shared',
@@ -988,7 +989,14 @@
               'ldflags': [
                 '-Wl,-blibpath:/usr/lib:/lib:/opt/freeware/lib/pthread'
               ],
-            }]
+            }],
+            ['"<(real_os_name)"=="OS400"', {
+              'ldflags': [
+                '-Wl,-blibpath:/QOpenSys/pkgs/lib:/QOpenSys/usr/lib',
+                '-Wl,-bbigtoc',
+                '-Wl,-brtl',
+              ],
+            }],
           ],
           'includes': [
             'node.gypi'