cmake FFTW3 examples

BLAST-WarpX/warpx cmake/dependencies/FFT.cmake :94 

find_package(FFTW3${HFFTWp} CONFIG REQUIRED)

in-formant/in-formant CMakeLists.txt :225 

find_package(FFTW3 REQUIRED)

DIPlib/diplib src/CMakeLists.txt :179 

find_package(FFTW3)

geodynamics/sw4 CMakeLists.txt :95 

FIND_PACKAGE(FFTW3 REQUIRED)

casacore/casacore CMakeLists.txt :365 

find_package (FFTW3 COMPONENTS single double REQUIRED)

polatory/polatory CMakeLists.txt :37 

find_package(FFTW3 CONFIG)

UPBGE/upbge build_files/cmake/platform/platform_apple.cmake :138 

find_package(Fftw3)

flashlight/flashlight cmake/FindFFTW3.cmake :22 

find_package(FFTW3 CONFIG)

espressomd/espresso CMakeLists.txt :520 

find_package(fftw3 REQUIRED COMPONENTS ${FFTW3_COMPONENTS})

vectorgraphics/asymptote cmake-scripts/external-libs.cmake :254 

find_package(FFTW3 CONFIG)

libsndfile/libsamplerate tests/CMakeLists.txt :15 

find_package(FFTW3)

xaxaxa-dev/vna CMakeLists.txt :66 

find_package(FFTW3 REQUIRED)