I looked these but, I could not understand anything. I need some example

@jsulm said in Add external library Cmake Windows:

Do you also have the *.lib files for these libs there? You can't link *.dll files, for linking you need *.lib.

Yes I have all files

@YoungCaveMan , can you tell, how build and use gsl in qt, step by step?

@SGaist That was my problem. I compiled the libraries with MinGW 32 while my Qt's is MinGW 64. I changed the compiler and the problem is solved.
Thanks for the help.

@Antonio-Ortiz

I am glad to see that you could solve your problem.

The wildcard option is quite helpful, but also quite dangerous, if you are not very careful.

Hi and welcome to devnet,

You don't link to dlls but to lib files but you don't use the file extension.

So essentially:

LIBS += -lgsl -lgslcblas

Finally I used a similar library in server side.
pHash library wasn't compatible with Qt5