CODEWITHSUNDEEP
qtvisual-c++visual-studio-2012
abhishek
abhishek

Reputation: 817

How to build an existing Qt project in Visual Studio?

I have a visual C++ project that contains references to Qt libraries but I am unable to build it in Visual Studio. I installed Qt 5 sdk and plugin in VS 2012 and the initial sample Qt projects work fine, but not the older project - it could be an issue related to the project being compatible to an older version of Qt - but I don't know how to solve the problem. The error keeps showing - "The system cannot find the path specified visual c++. Moc'ing .. Uic'ing.."

The error says MSB6006: "cmd.exe" exited with code 3. The solution explorer contains some moc_xx.cpp files which are only references and are not present in the project directory. I removed them and tried rebuilding but it gives the same error

Upvotes: 4

Views: 7000

Answers (2)

Kazutsugu Fukumuro
Kazutsugu Fukumuro

Reputation: 56

I too had the similar issue recently with an old VS project created years ago by a colleague.

The VS project was created using qmake. It contains the absolute full path to the moc.exe, of the machine where it was originally created. That is, of the PC of my colleague who left the team.

I do not have moc.exe at same location as he had it. Therefore, the MOC step in build fails, with the error: the system cannot find the path specified.

You could find what the path is, by raising build output verbosity to diagnostic for instance.

Hope it helps.

Upvotes: 0

spellmansamnesty
spellmansamnesty

Reputation: 479

QTDIR must be set prior to starting Visual Studio for the project to properly find the location of moc.exe and uic.exe.

The Qt Visual Studio Add-in will create custom build steps for .ui and header files whenever Qt files are added or modified. It is then Visual Studio that runs the custom build rules but these rules typically reference $(QTDIR)\bin\moc.exe.

Upvotes: 4

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