Problem with FFTW routines

[Alessandro]

Hello,
I'm trying to use the FFTW routines from MKL. I'm under Windows XP64, Visual Studio 2008, Intel Fortran Compiler 11.0.074. I'm trying to build the following example found on the forum:


implicit none
include "fftw3.f"

integer n
parameter (n=16)

integer*8 plan, iplan

double complex in, out
dimension in(N), out(N)

integer i


print *,"n = ",n
print *,"input = "
do i=1,n
in(i) = (1.0, 0.0)
print *,in(i)
enddo

print *,"fftw_fwd = ",fftw_forward
print *,"fftw_bkwd = ",fftw_backward
print *,"fftw_estimate = ",fftw_estimate

!call dfftw_plan_dft_1d(plan, n,in,out,fftw_forward, FFTW_ESTIMATE)
call DFFTW_PLAN_DFT_1D(plan, n,in,out,fftw_forward, FFTW_ESTIMATE)
call dfftw_plan_dft_1d(iplan,n,out,in,fftw_backward,FFTW_ESTIMATE)

print *,"address of fwd plan = ",plan
print *,"address of bckwd plan = ",iplan

call dfftw_execute(plan)

print *, 'output after forward fft:'
do i=1,n
print *, out(i)
enddo

call dfftw_execute(iplan)

print *, 'after inverse fft:'
do i=1,n
print *, in(i)
enddo

call dfftw_destroy_plan(plan)
call dfftw_destroy_plan(iplan)

end



I followed these steps:
1) created the fftw3xf_intel.lib with the command nmake lib64emt
2) created the project in VS2008 with the main file and the file mkl_fftw_examples.fi
3) added fftw3xf_intel.lib in the tab linker -> input -> additional dependencies
4) added the path of the fftw3xf_intel.lib in the tag linker -> general -> additional librariy directories

When I try to build i get the following errors:

Error 1 error LNK2019: unresolved external symbol for_set_reentrancy referenced in function MAIN__ Source2.obj
Error 2 error LNK2019: unresolved external symbol for_write_seq_lis referenced in function MAIN__ Source2.obj
Error 3 error LNK2019: unresolved external symbol for_write_seq_lis_xmit referenced in function MAIN__ Source2.obj
Error 4 error LNK2019: unresolved external symbol for_emit_diagnostic referenced in function MAIN__ Source2.obj
Error 5 error LNK2001: unresolved external symbol _fltused Source2.obj
Error 6 error LNK2001: unresolved external symbol _fltused fftw3xf_intel.lib(tt_fftw_in_to_out.obj)
Error 7 error LNK2001: unresolved external symbol _fltused fftw3xf_intel.lib(tt_fftw_norm.obj)
Error 8 error LNK2001: unresolved external symbol mainCRTStartup LINK
Error 9 error LNK2019: unresolved external symbol malloc referenced in function fftw_plan_dft_1d fftw3xf_intel.lib(fftw_plan_dft_1d.obj)
Error 10 error LNK2019: unresolved external symbol DftiCreateDescriptor referenced in function fftw_plan_dft_1d fftw3xf_intel.lib(fftw_plan_dft_1d.obj)
Error 11 error LNK2019: unresolved external symbol DftiErrorClass referenced in function fftw_plan_dft_1d fftw3xf_intel.lib(fftw_plan_dft_1d.obj)
Error 12 error LNK2019: unresolved external symbol DftiSetValue referenced in function fftw_plan_dft_1d fftw3xf_intel.lib(fftw_plan_dft_1d.obj)
Error 13 error LNK2019: unresolved external symbol DftiFreeDescriptor referenced in function fftw_plan_dft_1d fftw3xf_intel.lib(fftw_plan_dft_1d.obj)
Error 14 error LNK2001: unresolved external symbol DftiFreeDescriptor fftw3xf_intel.lib(fftw_destroy_plan.obj)
Error 15 error LNK2019: unresolved external symbol free referenced in function fftw_plan_dft_1d fftw3xf_intel.lib(fftw_plan_dft_1d.obj)
Error 16 error LNK2001: unresolved external symbol free fftw3xf_intel.lib(fftw_destroy_plan.obj)
Error 17 error LNK2019: unresolved external symbol DftiCommitDescriptor referenced in function fftw_plan_dft_1d fftw3xf_intel.lib(fftw_plan_dft_1d.obj)
Error 18 error LNK2019: unresolved external symbol d_forward_trig_transform referenced in function fftw_execute fftw3xf_intel.lib(fftw_execute.obj)
Error 19 error LNK2019: unresolved external symbol printf referenced in function fftw_execute fftw3xf_intel.lib(fftw_execute.obj)
Error 20 error LNK2019: unresolved external symbol d_backward_trig_transform referenced in function fftw_execute fftw3xf_intel.lib(fftw_execute.obj)
Error 21 error LNK2001: unresolved external symbol d_backward_trig_transform fftw3xf_intel.lib(tt_fftw_norm.obj)
Error 22 error LNK2019: unresolved external symbol DftiComputeBackward referenced in function fftw_execute fftw3xf_intel.lib(fftw_execute.obj)
Error 23 error LNK2019: unresolved external symbol DftiComputeForward referenced in function fftw_execute fftw3xf_intel.lib(fftw_execute.obj)
Error 24 error LNK2019: unresolved external symbol free_trig_transform referenced in function fftw_destroy_plan fftw3xf_intel.lib(fftw_destroy_plan.obj)
Error 25 error LNK2019: unresolved external symbol _intel_fast_memcpy referenced in function tt_fftw_in_to_out fftw3xf_intel.lib(tt_fftw_in_to_out.obj)
Error 26 error LNK2001: unresolved external symbol _intel_fast_memcpy fftw3xf_intel.lib(tt_fftw_norm.obj)
Error 27 fatal error LNK1120: 20 unresolved externals x64\Debug\FFTW_ex1.exe


If I try to compile for 32bit (after generating and linking the .lib obtained with the command nmake lib32) I instead get the following errors:

Error 1 error LNK2019: unresolved external symbol _DFFTW_PLAN_DFT_1D referenced in function _MAIN__ Source2.obj
Error 2 error LNK2019: unresolved external symbol _DFFTW_EXECUTE referenced in function _MAIN__ Source2.obj
Error 3 error LNK2019: unresolved external symbol _DFFTW_DESTROY_PLAN referenced in function _MAIN__ Source2.obj
Error 4 fatal error LNK1120: 3 unresolved externals Debug\FFTW_ex1.exe


Could someone please help me? Thanks in advance.

Alessandro

[Gennady_F_Intel]

Alessandro,
I tried to reproduce the problem you encountered but I couldn't.
Nevertheless, I uploaded to this thread the VS2008 project. You can find it into attachments (fftw_problem.zip )
You can get it and try to build on your side.
--Gennady