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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:10.0pt'>I am trying to implement a project file to build my project conditionally. In my case the condition is the host architecture, either 32 bit linux or 64 bit linux. I tried something like this:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>message($$QMAKESPEC)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>linux-g++-32 {<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> message( "have 32 bit linux")<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>}<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>linux-g++-64 {<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'> message("have 64 bit linux")<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>}<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>I took this from qmake Advanced Usage available in assistant.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>That fragment does not work. In fact only the first call to message prints<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Project MESSAGE:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>which seems to mean that the variable QMAKESPEC has null value and the two conditions are not met.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>I am using qt-4.8.0.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>How can I implement such conditional building based on the host architecture?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Thanks for any help,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Zen<o:p></o:p></span></p></div></body></html>