c++ - Cannot find library when building with Qt Creator -


i'm using ubuntu 12.04 64-bit.

i when building project receive error:

cannot find -lnspr

collect2: ld returned 1 exit status

the .pro file contains 

libraries.path = /opt/my_dir libraries.files = \     engine/x64/libnspr.so \

why can't find library?

the workaround far - put libnspr.so /usr/lib/x86_64-linux-gnu directory.

from there linker picked library , build successful.

i understand it's not best way solve problem, constuctive criticism welcome.


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