CODEWITHSUNDEEP
c++xcodemacosopencvhyperlink
wking
wking

Reputation: 1353

library not found for -lopencv_highgui.2.4.9

I was following this to make my first OpenCV project, showing a picture with imshow() function.

I right clicked on the project and clicked "Add files to..", added libopencv_core.2.4.9.dylib and libopencv_highgui.2.4.9.dylib. Then I added "/usr/local/include" in "Header Search Paths".

However, I met this error: "ld: library not found for -lopencv_highgui.2.4.9".

But if I added "/usr/local/lib" in "Library Search Paths", it worked!

My question is: since I already added libraries in the project, why do I bother to added "/usr/local/lib"?

p.s. I am using Xcode5.1.1 and OpenCV2.4.9

Upvotes: 2

Views: 1005

Answers (1)

Zerschmetterling
Zerschmetterling

Reputation: 36

You only added the library name itself. The linker does not know, where to search it. The linker has some default search paths built in (e.g. /lib or /usr/lib), but /usr/local/lib is not one of it. Historically the local path has to store local software only. /usr could be stored on a network mount. Thus there could be other rights management on /usr/local and thus it may be a security problem, if ld would automatically search in this subdirectories per default.

Upvotes: 1

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