Building Qt 4.8.2 with clang and libc++

nna_misc

Has anybody build Qt 4.8.2 with cland and libc++. I tried by modifying the linux-clang mkspec:
@
QMAKE_CXXFLAGS += -stdlib=libc++ -I/local/mnt/workspace/libcxx/include
QMAKE_LFLAGS += -L/local/mnt/workspace/libcxx/build
@

However the compilation cant find <ext/atomicity.h> which is really the case since libcxx/include does not have that file.
/local/mnt/workspace/ashoknn/519_libcxx_transition/Qt/src/4.8.2/qt-qt/src/3rdparty/javascriptcore/JavaScriptCore/wtf/Threading.h:82:10: fatal error: 'ext/atomicity.h' file not found
#include <ext/atomicity.h>
^
Any clues?

TIA

japaget

Please post a little bit more information so that we can be a bit more helpful:

What platform are you using? (Windows, Mac, or Linux)
What is your exact operating system version? (such as Windows 7 Professional 64-bit, Mac OS X "Lion", or CentOS Linux 6.2)
What version of Clang are you using?
What Qt platform definition did you use to configure your build:
-platform unsupported/macx-clang or -platform unsupported/linux-clang ?
What attempts have you made to solve the problem yourself? (So we don't suggest something that you already tried and that didn't work.)

I am a fellow Qt Developer Forum newbie. I don't know the answer to your question but am also interested in building Qt with Clang and came across your posting when I did a Google search to see if anyone had succeeded. However, I did find one site that might be helpful:

http://philippmuenzel.de/wordpress/fun-with-clang-or-how-to-build-qt-4-8-with-clang-3-without-going-insane/

nna_misc

Here is some additional info:

Linux system: Ubuntu 11.04
Clang 3.1 release
platform unsupported/linux-clang used to configure

Here is what I had to do to get it compiling with clang and libc++:

I had to disable QtScript and translations (-nomake translations -no-script)
Change corelib/tools/qiterator.h to disable forward-declaration:

+// Forward declaration causes problem when compiling with libc++

+#if 0

namespace std {

 struct bidirectional_iterator_tag;

 struct random_access_iterator_tag;

}

+#endif

+#include <iterator>

Ofcourse this is assuming that you have compiled and created the softlinks mentioned on libc++ website.

HTH