Using qrc files as sources doesn't work with variant_dir

[Corni]

The following setup

SConstruct:
env = Environment()
envDebug = env.Clone()
envDebug.Append(CPPFLAGS=['-g','-O0','-D_REENTRANT'])
envRelease = env.Clone()
envRelease.Append(CPPFLAGS=['-O3','-D_REENTRANT'])
envDebug.SConscript('src/SConscript', variant_dir='build/debug', duplicate=0, exports={'env':envDebug})
envRelease.SConscript('src/SConscript', variant_dir='build/release', duplicate=0, exports={'env':envRelease})

SConscript:
Import("env")
env['QTDIR']='/usr/bin'
env.Tool('qt4')
env.Uic4(Glob('src/*.ui'))
env.Append(CPPPATH=['/usr/share/qt/mkspecs/linux-g++', '/usr/include/QtCore', '/usr/include/QtGui', '/usr/include'])
env.Append(LIBS=['QtGui','QtCore', 'pthread'])
env.Program(target='pokercalculator', source=Glob('*.cpp')+Glob('*.qrc'))

results in the following error message:
scons: warning: Two different environments were specified for target /pokercalculator/src/qrc_cards.cc,
        but they appear to have the same action: $QT4_RCC $QT4_QRCFLAGS -name cards $SOURCE -o $TARGET
File "/pokercalculator/src/SConscript", line 10, in <module>

scons: *** Multiple ways to build the same target were specified for: /pokercalculator/src/qrc_cards.cc (from ['/pokercalculator/src/cards.qrc'] and from ['/pokercalculator/src/cards.qrc'])
File "/pokercalculator/src/SConscript", line 10, in <module>

[Dirk Baechle (dl9obn)]

Hi,

the problem here is that you specify "duplicate=0", such that generated files are created in the source directory. SCons then gets confused when you do this twice from different environments.
You need to set duplicate=1, this should fix your problem.

Best regards,

Dirk

[Corni (comaddcor)]

Would you say that in principle i should be able to use that with duplicate=0 if i want to?

As an intermediate fix i found that using an explicit call like this:
qrccc = env.Qrc4('cards')
env.Program(target='pokercalculator', source=Glob('*.cpp')+qrccc)

works even though duplicate=0 is set.

[Corni (comaddcor)]

*Wouldn't you say...

[Corni (comaddcor)]

Also by setting duplicate=1 the qrc file gets copied but the resource files which it points to a naturally not detected by scons as a dependency and are therefore not automatically copied.
Being able to use it with duplicate=0 would therefore be the preferred way.
I therefore have to disagree with you decision to mark the bug as invalid.
Maybe low priority would be more appropriate.

[Dirk Baechle (dl9obn)]

I'll treat these problems while trying to fix the UIC handling...both are related.