build: Updates to enable AIX support

common.gypi

@@ -64,6 +64,10 @@
           ['target_arch=="x64"', {
             'msvs_configuration_platform': 'x64',
           }],
+          ['OS=="aix"', {
+            'cflags': [ '-gxcoff' ],
+            'ldflags': [ '-Wl,-bbigtoc' ],
+          }],
         ],
         'msvs_settings': {
           'VCCLCompilerTool': {
@@ -199,11 +203,11 @@
           'BUILDING_UV_SHARED=1',
         ],
       }],
-      [ 'OS in "linux freebsd openbsd solaris"', {
+      [ 'OS in "linux freebsd openbsd solaris aix"', {
         'cflags': [ '-pthread', ],
         'ldflags': [ '-pthread' ],
       }],
-      [ 'OS in "linux freebsd openbsd solaris android"', {
+      [ 'OS in "linux freebsd openbsd solaris android aix"', {
         'cflags': [ '-Wall', '-Wextra', '-Wno-unused-parameter', ],
         'cflags_cc': [ '-fno-rtti', '-fno-exceptions', '-std=gnu++0x' ],
         'ldflags': [ '-rdynamic' ],
@@ -225,11 +229,11 @@
             'cflags': [ '-m64' ],
             'ldflags': [ '-m64' ],
           }],
-          [ 'target_arch=="ppc"', {
+          [ 'target_arch=="ppc" and OS!="aix"', {
             'cflags': [ '-m32' ],
             'ldflags': [ '-m32' ],
           }],
-          [ 'target_arch=="ppc64"', {
+          [ 'target_arch=="ppc64" and OS!="aix"', {
 	    'cflags': [ '-m64', '-mminimal-toc' ],
 	    'ldflags': [ '-m64' ],
 	   }],
@@ -239,6 +243,18 @@
             'cflags!': [ '-pthread' ],
             'ldflags!': [ '-pthread' ],
           }],
+          [ 'OS=="aix"', {
+            'conditions': [
+              [ 'target_arch=="ppc"', {
+                'ldflags': [ '-Wl,-bmaxdata:0x60000000/dsa' ],
+              }],
+              [ 'target_arch=="ppc64"', {
+                'cflags': [ '-maix64' ],
+                'ldflags': [ '-maix64' ],
+              }],
+            ],
+            'ldflags!': [ '-rdynamic' ],
+          }],
         ],
       }],
       [ 'OS=="android"', {

configure

@@ -25,7 +25,8 @@ import nodedownload
 # parse our options
 parser = optparse.OptionParser()
 
-valid_os = ('win', 'mac', 'solaris', 'freebsd', 'openbsd', 'linux', 'android')
+valid_os = ('win', 'mac', 'solaris', 'freebsd', 'openbsd', 'linux',
+            'android', 'aix')
 valid_arch = ('arm', 'arm64', 'ia32', 'mips', 'mipsel', 'ppc', 'ppc64', 'x32',
               'x64', 'x86')
 valid_arm_float_abi = ('soft', 'softfp', 'hard')
@@ -480,11 +481,11 @@ def check_compiler(o):
     o['variables']['gas_version'] = get_gas_version(CC)
 
 
-def cc_macros():
-  """Checks predefined macros using the CC command."""
+def cc_macros(cc=None):
+  """Checks predefined macros using the C compiler command."""
 
   try:
-    p = subprocess.Popen(shlex.split(CC) + ['-dM', '-E', '-'],
+    p = subprocess.Popen(shlex.split(cc or CC) + ['-dM', '-E', '-'],
                          stdin=subprocess.PIPE,
                          stdout=subprocess.PIPE,
                          stderr=subprocess.PIPE)
@@ -542,7 +543,12 @@ def is_arm_hard_float_abi():
 def host_arch_cc():
   """Host architecture check using the CC command."""
 
-  k = cc_macros()
+  if sys.platform.startswith('aix'):
+    # we only support gcc at this point and the default on AIX
+    # would be xlc so hard code gcc
+    k = cc_macros('gcc')
+  else:
+    k = cc_macros()
 
   matchup = {
     '__aarch64__' : 'arm64',

deps/cares/cares.gyp

@@ -9,6 +9,10 @@
           '_GNU_SOURCE'
         ]
       }],
+      [ 'OS=="aix"', {
+        'include_dirs': [ 'config/aix' ],
+        'sources': [ 'config/aix/ares_config.h' ],
+      }],
       ['OS=="solaris"', {
         'defines': [
           '__EXTENSIONS__',

deps/cares/common.gypi

@@ -137,7 +137,7 @@
         ],
       }],
 
-      [ 'OS in "linux freebsd openbsd solaris android"', {
+      [ 'OS in "linux freebsd openbsd solaris android aix"', {
         'variables': {
           'gcc_version%': '<!(python build/gcc_version.py)>)'
         },