Build rules for CUDA source files

[Adam Mercer]

Hi

I'm working on adding some code that uses the NVidia CUDA compiler and
libraries to one of our projects. I believe that I have added the
appropriate rules to Makefile.am to specify how to do the build:

noinst_LTLIBRARIES = libfft.la
libfft_la_SOURCES = \
  TimeFreqFFT.c \
  AverageSpectrum.c \
  Convolution.c
  CudaComplexFFT.c \
  CudaRealFFT.c \
  FFTWMutex.c \
  CudaFunctions.c \
  CudaFFT.cu

pkginclude_HEADERS = \
  ComplexFFT.h \
  RealFFT.h \
  FFTWMutex.h \
  TimeFreqFFT.h \
  CudaPlan.h

.cu.o:
  $(NVCC) -c $(INCLUDES) $(CPPFLAGS) $(NVCCFLAGS) -o $@ $<

however when I build the CudaFFT.cu source is not built, but I can
build it manually with "make CudaFFT.o", is this due to automake not
recognising CudaFFT.cu as a source file?

How can I get CudaFFT.o to be built automatically?

Cheers

Adam

PS: I'm working on adding support into automake to support CUDA and
almost have something ready but I'd like to also get the above
working.