Fixed constraints in recipes for packages that depends on fftw (#13125)

var/spack/repos/builtin/packages/abinit/package.py

@@ -71,8 +71,9 @@ class Abinit(AutotoolsPackage):
     # depends_on('elpa~openmp', when='+elpa+mpi~openmp')
     # depends_on('elpa+openmp', when='+elpa+mpi+openmp')
 
-    depends_on('fftw+float', when='~openmp')
-    depends_on('fftw+float+openmp', when='+openmp')
+    depends_on('fftw precision=float')
+    depends_on('fftw~openmp', when='~openmp')
+    depends_on('fftw+openmp', when='+openmp')
 
     depends_on('netcdf-fortran', when='+hdf5')
     depends_on('hdf5+mpi', when='+mpi+hdf5')  # required for NetCDF-4 support

var/spack/repos/builtin/packages/accfft/package.py

@@ -20,7 +20,7 @@ class Accfft(CMakePackage, CudaPackage):
     variant('shared', default=True, description='Enables the build of shared libraries')
 
     # See: http://accfft.org/articles/install/#installing-dependencies
-    depends_on('fftw+float+double~mpi+openmp')
+    depends_on('fftw precision=float,double ~mpi+openmp')
 
     depends_on('parallel-netcdf', when='+pnetcdf')
 

var/spack/repos/builtin/packages/libemos/package.py

@@ -28,7 +28,7 @@ class Libemos(CMakePackage):
 
     depends_on('eccodes', when='grib=eccodes')
     depends_on('grib-api', when='grib=grib-api')
-    depends_on('fftw+float+double')
+    depends_on('fftw precision=float,double')
     depends_on('cmake@2.8.11:', type='build')
     depends_on('pkgconfig', type='build')
 

var/spack/repos/builtin/packages/relion/package.py

@@ -37,7 +37,7 @@ class Relion(CMakePackage, CudaPackage):
     # relion will not build with newer versions of cmake
     # per https://github.com/3dem/relion/issues/380
     depends_on('cmake@3:3.9.4', type='build')
-    depends_on('fftw+float+double')
+    depends_on('fftw precision=float,double')
     depends_on('fltk', when='+gui')
     depends_on('libtiff')