Qt5 development primer

[hmuelner]

Re: building QWebkit on Windows:
The reason for the build failure are the following lines in qtwebkit/Source/WTF/WTF.pri:
@ contains(QT_CONFIG,icu) {
LIBS += -licui18n -licuuc -licudata
} else {
error("To build QtWebKit with Qt 5 you need ICU")
}
@

I could not find a way to include icu in QT_CONFIG, but a brute force approach (for testing purposes) would be to remove the contains query and include the 3 icu libraries unconditionally.

[pierrevr]

hmuelner: That is a different problem, I believe. As stated in "Building_Qt_5_from_Git":http://developer.qt.nokia.com/wiki/Building_Qt_5_from_Git :

WebKit doesn’t compile, missing ICU

Currently there is no configure time check for ICU, so install it through the package manager through
on Ubuntu/Debian:

sudo apt-get install libicu-dev

on Fedora:

yum search ICU

Alternatively you can also compile Qt without webkit by deleting / renaming the qtwebkit, qtwebkit-examples-and-demos directories. The -no-webkit option of configure does not work yet : https://bugreports.qt-project.org/browse/QTBUG-20577

[hmuelner]

@pierrevr: I am talking about building Webkit on Windows - no package manager there.

[Kondr]

Hello, I have tried to compile Qt5 under archlinux and under mac os, but in both cases I have got the same errors:

bq.
cd qtsvg/ && make -f Makefile
cd qtphonon/ && make -f Makefile
cd qtxmlpatterns/ && make -f Makefile
make[1]: Entering directory /home/kondr/Documents/qt5/qtxmlpatterns' /home/kondr/Documents/qt5/qtbase/bin/qmake QMAKE_ABSOLUTE_SOURCE_PATH=/home/kondr/Documents/qt5/qtbase -o Makefile qtxmlpatterns.pro Could not find mkspecs for your QMAKESPEC(default) after trying: /home/kondr/Documents/qt5/qtxmlpatterns/mkspecs /home/kondr/Documents/qt5/qt5/mkspecs make[1]: *** [Makefile] Error 3 make[1]: Leaving directory /home/kondr/Documents/qt5/qtxmlpatterns'
make: *** [module-qtxmlpatterns-make_default] Error 2
make: *** Waiting for unfinished jobs....
make[1]: Entering directory /home/kondr/Documents/qt5/qtsvg' /home/kondr/Documents/qt5/qtbase/bin/qmake QMAKE_ABSOLUTE_SOURCE_PATH=/home/kondr/Documents/qt5/qtbase -o Makefile qtsvg.pro Could not find mkspecs for your QMAKESPEC(default) after trying: /home/kondr/Documents/qt5/qtsvg/mkspecs /home/kondr/Documents/qt5/qt5/mkspecs make[1]: *** [Makefile] Error 3 make[1]: Leaving directory /home/kondr/Documents/qt5/qtsvg'
make: *** [module-qtsvg-make_default] Error 2
make[1]: Entering directory /home/kondr/Documents/qt5/qtphonon' /home/kondr/Documents/qt5/qtbase/bin/qmake QMAKE_ABSOLUTE_SOURCE_PATH=/home/kondr/Documents/qt5/qtbase -o Makefile qtphonon.pro Could not find mkspecs for your QMAKESPEC(default) after trying: /home/kondr/Documents/qt5/qtphonon/mkspecs /home/kondr/Documents/qt5/qt5/mkspecs make[1]: *** [Makefile] Error 3 make[1]: Leaving directory /home/kondr/Documents/qt5/qtphonon'
make: *** [module-qtphonon-make_default] Error 2

I have used the next command:

bq. git clone git://gitorious.org/qt/qt5.git qt5 && cd qt5 && perl init-repository && export PATH="$PWD/qtbase/bin:$PATH" && ./configure -prefix $PWD/qt5 -opensource -confirm-license -nomake tests -nomake examples && make -j3

In addition I would like to know how to compile Qt 5 for a special arch? (for example, how to compile Qt 5 for i386 arch on x86_64 OS?)

[hmuelner]

I made some progress (but did not succeed) with compiling the current git version of qtwebkit with vs2010 in windows7(64):

My Qt directory is in d:\Qt\qt5.

• I created an additional system cpp directory in d:\cpp with an include and a lib subdirectory

• I add two variables to my system environment: INCLUDE=d:\cpp\include and LIB=d:\cpp\lib and started a new Visual Studio Command Prompt.

• I copied qedit.h from the Windows SDK 6.0A to d:\cpp\include

• I got the ICU libraries form http://download.icu-project.org/files/icu4c/4.8.1.1/icu4c-4_8_1_1-Win32-msvc10.zip

• I copied the icu headers ti d:\cpp\include

• I copied the icu lib files (*.lib and *.dll) to d:\Qt\qt5\qtbase\lib

• I renamed icuin.lib to icui18n.lib, icuind.lib to icui18nd.lib and icudt.lib to icudata.lib

• I got ftp://sources.redhat.com/pub/pthreads-win32/pthreads-w32-2-8-0-release.exe for the pthread library

• I copied the pthreads headers and libraries to d:\cpp\include and d:\cpp\lib

• I changed one subroutine in d:/Qt/qt5/qtwebkit/Tools/Scripts/webkitdirs.pm to the following code (because the mkspec can be a ;-separated path list):
  @sub retrieveQMakespecVar
  {
  my $mkspec = $[0];
  my $varname = $[1];

  my $varvalue = undef;
  #print "retrieveMakespecVar " . $mkspec . ", " . $varname . "\n";
  my @mkspecs = split(/;/,$mkspec);
  foreach $mkspec (@mkspecs) {
  local SPEC;
  open (SPEC, "<$mkspec") or next;
  while (<SPEC>) {
  if ($_ =~ /\sinclude((.+))/) {
  # open the included mkspec
  my $oldcwd = getcwd();
  (my $volume, my $directories, my $file) = File::Spec->splitpath($mkspec);
  my $newcwd = "$volume$directories";
  chdir $newcwd if $newcwd;
  $varvalue = retrieveQMakespecVar($1, $varname);
  chdir $oldcwd;
  } elsif ($_ =~ /$varname\s*=\s*([^\s]+)/) {
  $varvalue = $1;
  last;
  }
  }
  close SPEC;
  last if defined($varvalue);
  }
  return $varvalue;
  }@

• sub retrieveQMakespecVar
  {
  my $mkspec = $[0];
  my $varname = $[1];

  my $varvalue = undef;
  #print "retrieveMakespecVar " . $mkspec . ", " . $varname . "\n";
  my @mkspecs = split(/;/,$mkspec);
  foreach $mkspec (@mkspecs) {
  local SPEC;
  open (SPEC, "<$mkspec") or next;
  while (<SPEC>) {
  if ($_ =~ /\sinclude((.+))/) {
  # open the included mkspec
  my $oldcwd = getcwd();
  (my $volume, my $directories, my $file) = File::Spec->splitpath($mkspec);
  my $newcwd = "$volume$directories";
  chdir $newcwd if $newcwd;
  $varvalue = retrieveQMakespecVar($1, $varname);
  chdir $oldcwd;
  } elsif ($_ =~ /$varname\s*=\s*([^\s]+)/) {
  $varvalue = $1;
  last;
  }
  }
  close SPEC;
  last if defined($varvalue);
  }
  return $varvalue;
  }
  @

• sub retrieveQMakespecVar
  {
  my $mkspec = $[0];
  my $varname = $[1];

  my $varvalue = undef;
  #print "retrieveMakespecVar " . $mkspec . ", " . $varname . "\n";
  my @mkspecs = split(/;/,$mkspec);
  foreach $mkspec (@mkspecs) {
  local SPEC;
  open (SPEC, "<$mkspec") or next;
  while (<SPEC>) {
  if ($_ =~ /\sinclude((.+))/) {
  # open the included mkspec
  my $oldcwd = getcwd();
  (my $volume, my $directories, my $file) = File::Spec->splitpath($mkspec);
  my $newcwd = "$volume$directories";
  chdir $newcwd if $newcwd;
  $varvalue = retrieveQMakespecVar($1, $varname);
  chdir $oldcwd;
  } elsif ($_ =~ /$varname\s*=\s*([^\s]+)/) {
  $varvalue = $1;
  last;
  }
  }
  close SPEC;
  last if defined($varvalue);
  }
  return $varvalue;
  }
  @
  (Continued in next post)

[hmuelner]

(Continued)

• cd d:\Qt\qt5\qtwebkit
• set PATH=%PATH%;d:\Qt\qt5\gnuwin32\bin
• set QMAKEPATH=D:\Qt\qt5\qtwebkit\Tools\qmake
• perl Tools\Scripts\build-webkit --qt

It now fails in qtwebkit\Source\WebCore:

nmake.exe -f Makefile.WebCore.DerivedSources

breaks with: NMAKE : fatal error U1095: expanded command line 'echo D:/Qt/qt5/qtwebkit/Source/WebCore/Modules/geolocation/Geolocation.idl ...[lots of idl files] ... | tr ' ' '\n' > generated/idl_files.tmp && perl -ID:/Qt/qt5/qtwebkit/Source/WebCore/bindings/scripts D:/Qt/qt5/qtwebkit/Source/WebCore/bindings/scripts/resolve-supplemental.pl --defines "LANGUAGE_JAVASCRIPT=1 ENABLE_CHANNEL_MESSAGING=1 ENABLE_SQL_DATABASE=1 ENABLE_DATALIST=1 ENABLE_WORKERS=1 ENABLE_SHARED_WORKERS=1 ENABLE_XSLT=1 ENABLE_FILTERS=1 ENABLE_CSS_FILTERS=1 ENABLE_SVG=1 ENABLE_JAVASCRIPT_DEBUGGER=1 ENABLE_WEB_SOCKETS=1 ENABLE_WEB_TIMING=1 ENABLE_TOUCH_EVENTS=1 ENABLE_GESTURE_EVENTS=1 WTF_USE_TILED_BACKING_STORE=1 ENABLE_NOTIFICATIONS=1 ENABLE_DETAILS=1 ENABLE_METER_TAG=1 ENABLE_PROGRESS_TAG=1 ENABLE_BLOB=1 ENABLE_REQUEST_ANIMATION_FRAME=1" --idlFilesList generated/idl_files.tmp --supplementalDependencyFile generated/supplemental_dependency.tmp --idlAttributesFile D:/Qt/qt5/qtwebkit/Source/WebCore/bindings/scripts/IDLAttributes.txt --preprocessor "D:\Qt\qt5\qtbase\bin\moc.exe -E"' too long

(the command line is approx. 31400 characters long).

Does anybody have an idea how to fix this section in DerivedSources.pri?
@resolveSupplemental.input = IDL_ATTRIBUTES_FILE
resolveSupplemental.script = $$RESOLVE_SUPPLEMENTAL_SCRIPT

FIXME : We need to use only perl at some point.

resolveSupplemental.commands = echo $$IDL_BINDINGS | tr ' ' '\n' > $$IDL_FILES_TMP &&
perl -I$$PWD/bindings/scripts $$resolveSupplemental.script
--defines "$${FEATURE_DEFINES_JAVASCRIPT}"
--idlFilesList $$IDL_FILES_TMP
--supplementalDependencyFile ${QMAKE_FUNC_FILE_OUT_PATH}/$$SUPPLEMENTAL_DEPENDENCY_FILE
--idlAttributesFile $${IDL_ATTRIBUTES_FILE}
--preprocessor "$${QMAKE_MOC} -E"
resolveSupplemental.output = $$SUPPLEMENTAL_DEPENDENCY_FILE
resolveSupplemental.add_output_to_sources = false
resolveSupplemental.depends = $$PWD/bindings/scripts/IDLParser.pm $$IDL_BINDINGS
GENERATORS += resolveSupplemental
@

[hmuelner]

Build qt5 on Windows 7 with VS2010 (next try, hope this is not a double post).

I tried again with the version from 2012-03-21 with this configuration:

configure -confirm-license -opensource -debug-and-release -platform win32-msvc2010 -fast -mp -opengl desktop -nomake tests -nomake examples

nmake generated the following files in qtbase/bin:

qmake.exe
moc.pdb
moc.ilk
moc.exe
rcc.pdb
rcc.ilk
rcc.exe
qdoc.pdb
qdoc.ilk
qdoc.exe
uic.pdb
uic.ilk
uic.exe
QtCored5.dll
QtCore5.dll
QtNetworkd5.dll
QtNetwork5.dll
QtSqld5.dll
QtSql5.dll
QtGuid5.dll
QtGui5.dll
QtXmld5.dll
QtXml5.dll
QtWidgetsd5.dll
QtWidgets5.dll
QtTestd5.dll
QtTest5.dll
QtPrintSupportd5.dll
QtPrintSupport5.dll
QtConcurrentd5.dll
QtConcurrent5.dll
QtOpenGLd5.dll
QtOpenGL5.dll
QtSvgd5.dll
QtSvg5.dll
phonond5.dll
phonon5.dll
QtXmlPatternsd5.dll
QtXmlPatterns5.dll
xmlpatterns.ilk
xmlpatterns.pdb
xmlpatterns.exe
xmlpatternsvalidator.pdb
xmlpatternsvalidator.ilk
xmlpatternsvalidator.exe
QtScriptd5.dll
QtScript5.dll
QtScriptToolsd5.dll
QtScriptTools5.dll
QtV8d5.dll
QtV85.dll
QtQmld5.dll
QtQml5.dll
QtQuickd5.dll
QtQuick5.dll
QtQuickTestd5.dll
QtQuickTest5.dll
qmlscene.ilk
qmlscene.pdb
qmlscene.exe
qmlplugindump.ilk
qmlplugindump.pdb
qmlplugindump.exe
qmlmin.pdb
qmlmin.ilk
qmlmin.exe
qmlprofiler.pdb
qmlprofiler.ilk
qmlprofiler.exe
qmltestrunner.pdb
qmltestrunner.ilk
qmltestrunner.exe
QtQuick1d5.dll
QtQuick15.dll
qmlviewer.ilk
qmlviewer.pdb
qmlviewer.exe
idc.ilk
idc.pdb
idc.exe

Building of webkit failed when trying to link jsc.exe with a lot of warnings about importing locally defined symbols from JavaScriptCore.lib and 24 unresolved external symbols:
JSC::evaluate
JSC::checkSyntax
WTF::randomNumber
WTF::createThread
WTF::MetaAllocatorHandle::~MetaAllocatorHandle (12 times)
WTF::MetaAllocator::freeFreeSpaceNode
WTF::PassRefPtr<class WTF::MetaAllocatorHandle>
WTF::MetaAllocator::MetaAllocator
WTF::cryptographicallyRandomNumber (4 times)

Any guesses how to correct this?

[hmuelner]

Build qt5 on Windows 7 with VS2010 (continued)

I could build all other modules (using nmake module-xxx) out of the box with the exception of qtmodule where moc could not parse dsserviceplugin.h because of a comma in Q_PLUGIN_METADATA. After correcting this it also built successfully.

[hmuelner]

qtscript and qtwebkit contain different versions of JavaScriptCore - it looks like syncing qt5 modules does not yet work perfectly ;-)

[situ117]

Hi,

I am trying to build Qt5 on Chakra Linux. I have Xcb libraries installed, but when I start configuration script I get an error saying:

@No QPA platform plugin enabled!
If you really want to build without a QPA platform plugin you must pass
-no-xcb and -no-eglfs to configure. Doing this will
produce a Qt that cannot run GUI applications.
The dependencies needed for xcb to build are listed in
src/plugins/platforms/xcb/README@

What I am missing here ?

[situ117]

So the package I was missing was : xcb-util-keysyms

configure script was succesful after I installed this package.

[subbul]

i am facing compilation error in building qt5 (not webkit yet)
I am using Ubuntu, with all xcb and other dependency installed using apt-get

configure was successful, whereas build failed in "wayland" (error log below).
Any clue on the wayland header files mismatch or version problems?

@
_make[4]: Entering directory `/home/xyz/build/newqt5/qt5/qtwayland/src/plugins/platforms/wayland'
g++ -c -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -D_REENTRANT -Wall -W -fPIC -DQT_NO_LIBUDEV -DQ_PLATFORM_WAYLAND -DQT_NO_WAYLAND_XKB -DQT_WAYLAND_GL_SUPPORT -DQT_WAYLAND_WINDOWMANAGER_SUPPORT -DQ_FONTCONFIGDATABASE -DQT_COMPILES_IN_HARFBUZZ -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -I/home/xyz/build/newqt5/qt5/qtbase/mkspecs/linux-g++ -I. -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore/5.0.0/QtCore -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui/5.0.0/QtGui -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport/5.0.0/QtPlatformSupport -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport -I/home/xyz/build/newqt5/qt5/qtbase/include -I../../../shared -Igl_integration/xcomposite_share -I.moc/debug-shared -o .obj/debug-shared/qwaylandintegration.o qwaylandintegration.cpp
In file included from qwaylandshmwindow.h:45:0,
from qwaylandintegration.cpp:46:
qwaylandwindow.h:112:18: error: ‘wl_callback_listener’ does not name a type
make[4]: *** [.obj/debug-shared/qwaylandintegration.o] Error 1
_
@

[subbul]

Issue is solved after downloading the release from
http://releases.qt-project.org/qt5.0/alpha/

instead of GIT

[quote author="subbul" date="1333560508"] i am facing compilation error in building qt5 (not webkit yet)
I am using Ubuntu, with all xcb and other dependency installed using apt-get

configure was successful, whereas build failed in "wayland" (error log below).
Any clue on the wayland header files mismatch or version problems?

@
_make[4]: Entering directory `/home/xyz/build/newqt5/qt5/qtwayland/src/plugins/platforms/wayland'
g++ -c -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -D_REENTRANT -Wall -W -fPIC -DQT_NO_LIBUDEV -DQ_PLATFORM_WAYLAND -DQT_NO_WAYLAND_XKB -DQT_WAYLAND_GL_SUPPORT -DQT_WAYLAND_WINDOWMANAGER_SUPPORT -DQ_FONTCONFIGDATABASE -DQT_COMPILES_IN_HARFBUZZ -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -I/home/xyz/build/newqt5/qt5/qtbase/mkspecs/linux-g++ -I. -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore/5.0.0/QtCore -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui/5.0.0/QtGui -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport/5.0.0/QtPlatformSupport -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport -I/home/xyz/build/newqt5/qt5/qtbase/include -I../../../shared -Igl_integration/xcomposite_share -I.moc/debug-shared -o .obj/debug-shared/qwaylandintegration.o qwaylandintegration.cpp
In file included from qwaylandshmwindow.h:45:0,
from qwaylandintegration.cpp:46:
qwaylandwindow.h:112:18: error: ‘wl_callback_listener’ does not name a type
make[4]: *** [.obj/debug-shared/qwaylandintegration.o] Error 1
_
@[/quote]

[yanghaijun]

i building qt5 with wingw32,but have a error:

qsvgstyle_p.h:65:20: qdebug.h:No such file or directory

[jlayt]

Hi, trying to build qtbase on WinXP using MSVC2008, followed the instructions exactly and it builds OK, but when when I try to run I get:

"Failed to load platform plugin "". Available platforms are: windows:

Any hints?

[stottle]

I am trying to build the qt5-alpha source from the zip download as I don't have git on my windows machine. Is there any way to do a "make clean"/"make confclean" without git?

[Philius]

I just happened to notice your posts - I didn't get an email notification.

According to configure, "To reconfigure, run 'make confclean' and 'configure'.".
Well you probably know that at least with Qt5 alpha, that doesn't work.

I'm on Debian so I can't offer any Windows wisdom, but for "make clean" I just delete the directory and re-unpack the alpha .tar.bz2 again.

I'm in the dark as to how to build/use the QtDeclarative component.
It appears that the header I'm looking for - "QtDeclarative/QDeclarativeComponent" isn't installed although it's in the source tree - yes I built/installed qtjsbackend and qtdeclarative.

Also, it would be nice if Qt5 beta had a top-level makefile that included targets for
linux-x86-32-gcc-x11
linux-x86-64-gcc-x11
windows7-64-msvc2010

and so on, so we could be sure we're building against a known and tested build configuration.

And yes, it should fail if any prerequisites are missing (and maybe print warnings if they are different versions).

[thinks]

Hi All,

I'm trying to building Qt5 om Mac OSX 10.7. Following the instructions given here:

http://qt-project.org/wiki/Building_Qt_5_from_Git

However, I'm running into an issue in the build-step which I'm not
sure how to solve. One of the errors I'm getting is the following:

gcc: error: tools/qlocale_mac.mm: Objective-C++ compiler not installed
on this system

I will give a detailed step-by-step descriptions of my process below,
assuming the starting point to be a blank shell with PWD=$HOME:

(1) git clone git://gitorious.org/qt/qt5.git qt5 [check!]

(2) cd qt5 [check!] :)

(3) perl init-repository --no-webkit [check! Does its job without complaining. I can provide the log if necessary]

(4) unset QTDIR [check!] :)

(5) export PATH="$PWD/qtbase/bin:$PWD/qtrepotools/bin:$PATH" [check!] :)

(6) ./configure -developer-build -opensource -nomake examples -nomake
tests [check! See below]

Get a few warnings about some Qt header not containing macros, e.g.:

QtCore: WARNING:
/Users/thinks/qt5/qtbase/src/corelib/qtcoreversion.h does
not include QT_BEGIN_HEADER

but they don't seem severe. Other relevant output:

Build type: macx-clang
Architecture: x86_64
Host architecture: x86_64
Platform notes:

• Also available for Mac OS X: macx-g++

(7) ./build -j 4

This is where the trouble begins. The following (first) error is given:

[Lots of output without errors...]
qabstractanimation.h -o .moc/debug-shared/moc_qabstractanimation.cpp
gcc: error: tools/qlocale_mac.mm: Objective-C++ compiler not installed
on this system
gcc: error: kernel/qcore_mac_objc.mm: Objective-C++ compiler not
installed on this system

Similar errors are reported further on as well, all with the same
reason given. It seems somewhat strange that gcc is used over g++, but
at the moment I'm not really sure why this happens.

Some info about gcc:

[thinks@wiggs ~] gcc --version
gcc (GCC) 4.8.0 20120408 (experimental)

Any advice greatly appreciated!

Thanks,

T

[ludde]

@thinks, did you try to "build the 5.0 alpha":http://qt-project.org/wiki/Qt-5-Alpha-building-instructions instead? Might be easier than building from git.

[thinks]

Thanks, Ludde! :)

We finally got it working here. The following was required:

• Grab latest from Qt5 git repo.
  git clone git://gitorious.org/qt/qt5.git qt5

• Use Qt's provided tool to initialize the repo.
  cd qt5
  perl init-repository --no-webkit

• Set up our build environment.
  unset QTDIR
  export PATH="$PWD/qtbase/bin:$PWD/qtrepotools/bin:$PATH"
  export PATH=/Applications/XCode.app/Contents/Developer/usr/bin:$PATH
  export CPP=clang++
  export CC=clang
  echo PATH $PATH

• Pre-build configuration. Note that we are forcing it to build using
  the Xcode compilers.
  ./configure -no-pch -developer-build -confirm-license -opensource
  -release -nomake demos -nomake examples -arch x86 -sdk
  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk

• Build. We could increase the number of course to improve speed once
  we are convinced that this works well...
  ./build -j 1

Not sure all of that stuff is required though, but because the build time is quite steep (even with j > 1) we didn't have time to narrow it down.

Cheers,

T