Say hello to Qt for Native Client.

This commits adds build system to support for the native 
client compiler (x86-only for now), sets up global defines,
and adds compile fixes for QtCore and QtGui.

Details:

* Add mkspecs for linux-nacl-g++ and macx-nacl-c++
* Add nacl configure option
* Add qconfig-minimal-system-dependencies.h
* Define Q_OS_NACL in qglobal.h
* Add qnacalunimplemented.h/cpp with POSIX stubs.
* .pro file changes for cross-compiling on Mac

2 files changed, 7 insertions, 5 deletions

diff --git a/src/corelib/io/io.pri b/src/corelib/io/io.pri
index ef448b1..7c14886 100644
--- a/src/corelib/io/io.pri
+++ b/src/corelib/io/io.pri
@@ -69,7 +69,7 @@ win32 {
         SOURCES += io/qfsfileengine_iterator_unix.cpp
         symbian:SOURCES += io/qprocess_symbian.cpp
         else:SOURCES += io/qprocess_unix.cpp
-        macx-*: {
+        !nacl:macx-*: {
             HEADERS += io/qfilesystemwatcher_fsevents_p.h
             SOURCES += io/qsettings_mac.cpp io/qfilesystemwatcher_fsevents.cpp
         }
@@ -84,9 +84,11 @@ win32 {
                     io/qfilesystemwatcher_dnotify_p.h
         }
 
-        freebsd-*|macx-*|darwin-*|openbsd-*:{
-            SOURCES += io/qfilesystemwatcher_kqueue.cpp
-            HEADERS += io/qfilesystemwatcher_kqueue_p.h
+        !nacl {
+            freebsd-*|macx-*|darwin-*|openbsd-*:{
+                SOURCES += io/qfilesystemwatcher_kqueue.cpp
+                HEADERS += io/qfilesystemwatcher_kqueue_p.h
+            }
         }
 
         symbian {
diff --git a/src/corelib/io/qresource.cpp b/src/corelib/io/qresource.cpp
index 8e76e9e..783fbb0 100644
--- a/src/corelib/io/qresource.cpp
+++ b/src/corelib/io/qresource.cpp
@@ -928,7 +928,7 @@ public:
     }
 };
 
-#if defined(Q_OS_UNIX)
+#if defined(Q_OS_UNIX) && ! defined (Q_OS_NACL)
 #define QT_USE_MMAP
 #endif