import library linking

Hi all, my app uses a third party dll library under win32 with QT 4.1.2 framework, and I "reimp"ed the import lib to a ".a" library file, but linking problem is occured when i finally built the project.

Need your help.

thanks

Quote:

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Originally Posted by bruce1007

Hi all, my app uses a third party dll library under win32 with QT 4.1.2 framework, and I "reimp"ed the import lib to a ".a" library file, but linking problem is occured when i finally built the project.

Need your help.

thanks

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In your project file (.pro) add this line

Code:

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LIBS += -L<PATH_WHERE_LIB_IS> -l<libname>

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Bye

I have used "LIBS += ..." reference, but the linker reported "undefined reference" error back.

Quote:

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Originally Posted by bruce1007

I have used "LIBS += ..." reference, but the linker reported "undefined reference" error back.

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Can you post the linker output?

the linker output like below

debug\form.o(.text+0x1c0): In function `ZN4FormC2EP7QWidget':
D:/project/study/prac/form.cpp:13: undefined reference to `stopMovie(void*
debug\form.o(.text+0x2d4): In function `ZN4FormC1EP7QWidget':
D:/project/study/prac/form.cpp:13: undefined reference to `stopMovie(void*
collect2: ld returned 1 exit status

How does the LIBS line look exactly? Is that a C++ library?

Quote:

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Originally Posted by jacek

How does the LIBS line look exactly? Is that a C++ library?

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If isn't a C++ library, use this syntax

Code:

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extern "C"
{
#include <libinclude>
}

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