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qtqmake

install 2 qt builds on the same machine

I've been using static built Qt 5.0.2 built in this directory D:\Soft\programming\qt-5.4.2.

Now I have installed the prebuilt qt-windows-opensource-5.0.2-mingw47_32-x86-offline to C:\Qt\Qt5.0.2

qmake location as shown in QtCreator configuration is C:\Qt\Qt5.0.2\5.0.2\mingw47_32\bin\qmake.exe and compiler : C:\Qt\Qt5.0.2\Tools\MinGW\bin\gcc.exe

qmake location for the static version is
D:\Soft\programming\qt-5.4.2\qtbase\bin\qmake.exe and compiler
Microsoft Visual C++ Compiler 11.0 (x86)

Upon building a test program, I get several warnings of the form below.

C:\Users\Bill\Desktop\mkspecs\modules\qt_lib_sql.pri:8: error: WARNING: Include file D:/Soft/programming/qt-5.0.1/qtbase/mkspecs/modules-inst/qt_lib_sql.pri not found`

I used to ignore these errors in my static built qt. An example is

C:\Users\Bill\Documents\QtProjects\mkspecs\modules\qt_lib_sql.pri:8: error: WARNING: Include file D:/Soft/programming/qt-5.4.2/qtbase/mkspecs/modules-inst/qt_lib_sql.pri not found

Now, i get the warning and errors ;

:-1: error: error: unrecognized command line option '-wl,-enable-auto-import'
:-1: error: error: wl: No such file or directory
:-1: error: error: unrecognized command line option '-wl'

As a major concern, D:/Soft/programming/qt-5.0.1/ does not exists from the warnings of the prebuild in contrast to the existing D:/Soft/programming/qt-5.4.2 in the warning from the static build.

I'm guessing this new installation is reading configuration and qmake files from the static build directory.

Solution

  • If you are switching Qt versions you must do a 'nmake distclean' in your project folder (from a terminal or perhaps your IDE), then run qmake using from the version/path you want to build against. Otherwise old paths linger in your makefiles. A 'make clean' is not enough.