make error

[kmoats90]

First, I see a couple of things that seem weird:

When I run cmake, I get a warning that BUILD_STEPS and CXX_FLAGS were not used by the project. Here are the flags I used: cmake -DFFTW_ROOT=${HOME}/usr/fftw-3.3.6-pl2 -DFFTW_USE_STATIC_LIBS=true -DCUDA_ROOT=/public/apps/cuda/8.0 -DBUILD_GPU=true -DBUILD_STEPS=true -DCXX_FLAGS="-O3" -DBUILD_SHARED=false ..

When I try to make, it detects C and CXX compiler as GNU 4.4.7 but I have loaded the gcc 5.1.0 module.
It continues fine until this happens:

Scanning dependencies of target step1_gpu [ 92%] Building CXX object steps/step1/CMakeFiles/step1_gpu.dir/step1_gpu.cpp.o Scanning dependencies of target step1_gpuf [ 94%] Building CXX object steps/step1/CMakeFiles/step1_gpuf.dir/step1_gpuf.cpp.o [ 97%] Linking CXX executable step1_gpu [100%] Linking CXX executable step1_gpuf /home/kmoats/usr/fftw-3.3.6-pl2/lib/libfftw3_threads.a(libfftw3_threads_la-threads.o): In function fftw_threads_register_planner_hooks':
threads.c:(.text+0x5d4): undefined reference to fftw_set_planner_hooks' collect2: error: ld returned 1 exit status make[2]: *** [steps/step1/step1_gpu] Error 1 make[1]: *** [steps/step1/CMakeFiles/step1_gpu.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... /home/kmoats/usr/fftw-3.3.6-pl2/lib/libfftw3_threads.a(libfftw3_threads_la-threads.o): In function fftw_threads_register_planner_hooks':
threads.c:(.text+0x5d4): undefined reference to fftw_set_planner_hooks' collect2: error: ld returned 1 exit status make[2]: *** [steps/step1/step1_gpuf] Error 1 make[1]: *** [steps/step1/CMakeFiles/step1_gpuf.dir/all] Error 2 make: *** [all] Error 2

I attached the output from "make VERBOSE=2". Thanks for the help.
verbose.txt

[frobnitzem]

I believe the issue here is because the FindFFTW.cmake produces the wrong link order in the line:

/public/apps/openmpi/1.8.6/gcc.4.4.7/bin/mpicxx -O3 -fopenmp -I/home/kmoats/usr/fftw-3.3.6-pl2/include -fopenmp -rdynamic CMakeFiles/step1_gpu.dir/step1_gpu.cpp.o CMakeFiles/step1_gpu.dir/step1_gpu_generated_kernels.cu.o -o step1_gpu -Wl,-rpath,/public/apps/cuda/8.0/lib64 /public/apps/cuda/8.0/lib64/libcudart_static.a -lpthread -ldl -lrt ../../libaccfft_gpu.a ../../libaccfft_utils.a /home/kmoats/usr/fftw-3.3.6-pl2/lib/libfftw3.a /home/kmoats/usr/fftw-3.3.6-pl2/lib/libfftw3_threads.a /public/apps/cuda/8.0/lib64/libcudart_static.a -lpthread -ldl -lrt /public/apps/cuda/8.0/lib64/libcufft.so

Switching libfftw3.a libfftw3_threads.a to libfftw3_threads.a libfftw3.a should resolve the fftw_set_planner_hooks function used by fftw_threads_register_planner_hooks.