Hello Graham (and Thiago)! On Wed, Nov 7, 2012 at 5:55 AM, Thiago Macieira <thiago...@...> wrote: > On quarta-feira, 7 de novembro de 2012 09.21.55, Graham Labdon wrote: >> Hi >> I downloaded Qt5 and ran the following configure command >> configure -platform win32-g++ >> This gave me the following error >> >> cc1plus.exe: error: unrecognized command line option >> "-fno-keep-inline-dllexport" mingw32-make: *** >> [tmp/obj/debug_shared/arch.o] Error 1 >> >> What can I do to fix this? > > Option 1: > use a MinGW version that supports that option. > > Option 2: > remove the option from mkspecs/win32-g++/qmake.conf
Let me comment briefly on why that option might be there and on my experience: With various versions of Qt 4.8 (not Qt 5) and various versions of mingw-w64 gcc 4.7, I have had trouble with "memory exhausted" errors when building Qt (if I remember correctly, when linking QtGuid4.dll). I was barely able to build Qt on a 4 Gb (windows) machine and was unable to build it without tweaking options on a 2 Gb machine. To build it on the 2 Gb machine, I used some memory-reducing compile options, in particular, "-fno-keep-inline-dllexport". So I am guessing that this option has been added to the default Qt 5 build configuration to address this issue. In my case, one of Ruben's 4.7 mingw-w64 builds does support "-fno-keep-inline-dllexport", so Thiago's option 1 is probably the way to go. If you do use a gcc without that doesn't support "-fno-keep-inline-dllexport" (Thiago's option 2) you should be aware that the link step may need a lot of memory, and plan to build on a big machine or look to other memory-reducing compile options and / or build configuration. > Thiago Macieira - thiago.macieira (AT) intel.com > Software Architect - Intel Open Source Technology Center > ... Good luck. K. Frank _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
