Linking a DLL using Nios2 IDE

[Altera_Forum]

Hi, 

I'm trying to link the FFTW library to an example based on the Hello_world template but in vain. Here's the error: ***[hello_world_2.elf] Error 1 obj/hello_world.o *In function 'main': undefined reference to 'fftw_malloc'  How do I link a DLL to a piece of code in Nios IDE? Thanks for any help.

[Altera_Forum]

HI, 

Regarding the same problem, if I specify the path of the library in "Project properties" and use linker flags -lfftw3, i get the following error: ***[hello_world_2.elf] Error 1 (path) ... /nios2-elf/bin/ld cannot find -lfftw3  Any help is most welcome. Thanks!