[CMake] fftw library in cmake

[aishwarya selvaraj]

Hi all ,
Below is my CMakelist.txt. I'm getting an error as mentioned below .
I'm not to rectify it .
Could anyone help me out here please ?

​CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
PROJECT(PROSE)
​
ExternalProject_Add(project_fftw
  #GIT_REPOSITORY  https://github.com/FFTW/fftw3
  URL "http://www.fftw.org/fftw-3.3.2.tar.gz"
  PREFIX ${CMAKE_CURRENT_BINARY_DIR}/fftw
  CONFIGURE_COMMAND ""
    #--Build step-----------------
  BUILD_COMMAND ""
    #--Install step---------------
  UPDATE_COMMAND "" # Skip annoying updates for every build
  INSTALL_COMMAND ""
 )

​include_directories(${CMAKE_CURRENT_BINARY_DIR}/fftw/src/project_fftw/api)
ExternalProject_Get_Property(project_fftw install_dir)
add_library(fftw STATIC IMPORTED)
add_dependencies(fftw project_fftw)

​ADD_EXECUTABLE(prose ${PROJECT_SOURCE_DIR}/src/prose.cpp)
TARGET_LINK_LIBRARIES(prose fftw  )

ERROR:
Scanning dependencies of target prose
[100%] Building CXX object CMakeFiles/prose.dir/src/prose.cpp.o
make[2]: *** No rule to make target `fftw-NOTFOUND', needed by `prose'.
Stop.
make[1]: *** [CMakeFiles/prose.dir/all] Error 2
make: *** [all] Error 2

Where Am I going wrong ?



-- 
Regards,
Aishwarya Selvaraj
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