build: sunos expects -pthreads, not -pthread

common.gypi

@@ -117,9 +117,8 @@
         'variables': {
           'gcc_version%': '<!(python build/gcc_version.py)>)',
         },
-        'cflags': [ '-Wall', '-pthread', ],
+        'cflags': [ '-Wall' ],
         'cflags_cc': [ '-fno-rtti', '-fno-exceptions' ],
-        'ldflags': [ '-pthread', ],
         'conditions': [
           [ 'host_arch != target_arch and target_arch=="ia32"', {
             'cflags': [ '-m32' ],
@@ -128,6 +127,13 @@
           [ 'OS=="linux"', {
             'cflags': [ '-ansi' ],
           }],
+          [ 'OS=="solaris"', {
+            'cflags': [ '-pthreads' ],
+            'ldflags': [ '-pthreads' ],
+          }, {
+            'cflags': [ '-pthread' ],
+            'ldflags': [ '-pthread' ],
+          }],
           [ 'visibility=="hidden" and gcc_version >= "4.0.0"', {
             'cflags': [ '-fvisibility=hidden' ],
           }],

uv.gyp

@@ -8,6 +8,15 @@
           '_GNU_SOURCE',
           'EIO_STACKSIZE=262144'
         ],
+        'conditions': [
+          ['OS=="solaris"', {
+            'cflags': ['-pthreads'],
+            'ldlags': ['-pthreads'],
+          }, {
+            'cflags': ['-pthread'],
+            'ldlags': ['-pthread'],
+          }],
+        ],
       }],
     ],
   },
@@ -313,11 +322,10 @@
           'libraries': [ 'ws2_32.lib' ]
         }, { # POSIX
           'defines': [ '_GNU_SOURCE' ],
-          'ldflags': [ '-pthread' ],
           'sources': [
             'test/runner-unix.c',
             'test/runner-unix.h',
-          ]
+          ],
         }],
         [ 'OS=="solaris"', { # make test-fs.c compile, needs _POSIX_C_SOURCE
           'defines': [
@@ -365,7 +373,6 @@
           'libraries': [ 'ws2_32.lib' ]
         }, { # POSIX
           'defines': [ '_GNU_SOURCE' ],
-          'ldflags': [ '-pthread' ],
           'sources': [
             'test/runner-unix.c',
             'test/runner-unix.h',