CODEWITHSUNDEEP
qtopencv
Paxton Sanders
Paxton Sanders

Reputation: 340

Can't include OpenBR library file in project file

Warning: I'm no Qt expert, so that may be what my problem is.

I built OpenBR on Windows 7 with MinGW following this guide.

This results in libopenbr.dll and the Unix-style libopenbr.dll.a.

What do I need to do in my .pro file to add it to my project? I've added the library path with:

LIBS += -L"include/openbr/lib"

That does not produce any errors. But I can't get the project to acknowledge the existence of the library in that location.

For the library itself, again, named libopenbr.dll.a, I've tried:

LIBS += -lopenbr

and

LIBS += -lopenbr.dll

and

LIBS += libopenbr.dll.a

and a number of other random guesses, but it never sees the file.

What am I doing wrong? I don't normally think of myself as an idiot, but after being stumped by what should be a pretty easy task, I'm starting to wonder.

Upvotes: 0

Views: 943

Answers (1)

jklontz
jklontz

Reputation: 126

I looked into this when I tagged the OpenBR 0.3 release, and I couldn't reproduce the issue. Here's what worked for me: QMake Integration

Having said that, there was a tricky part for me in setting up Qt Creator properly with MinGW. By default it was configured to find my Visual Studio installation. I fixed this by tinkering with my manual kit Tools->Options->Build & Run->Manual Desktop (default). In particular:

Compiler = MinGW (x86 64bit in C:\mingw64\bin)
Debugger = GDB Engine using "C:\mingw64\bin\gdb.exe"
Qt Version = Qt 5.0.2 (mingw64)

From what I experienced, if these aren't set correctly qmake will look for .lib files instead of .dll.a files when linking. My suspicion is that this will be made easier in Qt 5.1 when MinGW_w64 gets first class support by Qt.

Upvotes: 1

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