qmake absolute vs relative LIBS path

[TheShow]

Can relative paths be used in a qmake file when specifying LIBS, something like:

LIBS += -L./lib -lsomelib

LIBS += -L./lib -lsomelib

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We are developing a project and placing the .pro file into source control. The problem is that we have only been able to use absolute paths, as in

LIBS += -LC:/TheProject/lib -lsomelib

LIBS += -LC:/TheProject/lib -lsomelib

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but another developer might have checked out the project to a different location, for example

LIBS += -LC:/someDir/TheProject/lib -lsomelib

LIBS += -LC:/someDir/TheProject/lib -lsomelib

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Is there anyway to avoid this conflict so we don't always have to change this line when building?

[rknowles]

Exactly what problem do you get when you use relative paths? (I have used relative paths successfully on Unix and WIndows.)

[TheShow]

This is the linking error:

C:\Qt\2009.04\mingw\bin\..\lib\gcc\mingw32\3.4.5\. .\..\..\..\mingw32\bin\ld.exe: cannot find -llibfftw3-3
collect2: ld returned 1 exit status

In my project, there is a .pro file and a subdirectory named lib that contains all the DLL's required for the project. If a full path is specified, it works, but I've been unable to use any form of a relative path.

None of these have worked:
LIBS += -Llib -llibfftw3-3
LIBS += -L./lib -llibfftw3-3
LIBS += -L".\lib" -llibfftw3-3

but LIBS += -LC:/TheProject/lib -libfftw3-3 works like a charm.

[rknowles]

I don't see what's wrong from what you show. How about some more debugging stuff? Add this to your .pro:

QMAKE_PRE_LINK =+= "dir & dir lib & "

QMAKE_PRE_LINK =+= "dir & dir lib & "

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and then show us the results of those "dir" commands and the full text of the link command that is failing. (This should be right after the "dir"s.)

[rknowles]

Previous should be the usual "+=", not "=+=".

[plitex]

Are you solved the problem? Could you tell me how? I'm having the same issue to share the project...

[saa7_go]

Can you show your .pro file, and list of libraries that you use?

[blackrosezy]

simple, here is using absolute path :

LIBS += -L"E:\PROJECT\C++\QT\Sample\Curl\lib" -lcurldll

and here is using relative path :

LIBS += -L$$PWD\lib -lcurldll