Fortran compiler not found with CMake -GNinja

Created by: williamfgc

Might be realted to #1190 (closed) and should be easy to reproduce, I am running on a standard Ubuntu 16 with gcc compilers and openmpi.

CMake -GNinja can't find Fortran compiler:

-- Looking for a Fortran compiler
-- Looking for a Fortran compiler - NOTFOUND
...
Features:
    Library Type: shared
    Build Type:   Debug
    Testing: ON
    Build Options:
      BZip2    : ON
      ZFP      : ON
      SZ       : ON
      MGARD    : OFF
      MPI      : ON
      DataMan  : ON
      WDM      : ON
      SST      : OFF
      ZeroMQ   : ON
      HDF5     : ON
      Python   : ON
      Fortran  : OFF
      SysVShMem: ON
      Endian_Reverse: ON

While using default make finds Fortran compilers, thus enabling the Fortran bindings:

-- Looking for a Fortran compiler
-- Looking for a Fortran compiler - /usr/bin/f95
-- The Fortran compiler identification is GNU 5.4.0
-- Check for working Fortran compiler: /usr/bin/f95
-- Check for working Fortran compiler: /usr/bin/f95  -- works
-- Detecting Fortran compiler ABI info
-- Detecting Fortran compiler ABI info - done
-- Checking whether /usr/bin/f95 supports Fortran 90
-- Checking whether /usr/bin/f95 supports Fortran 90 -- yes
...
Features:
    Library Type: shared
    Build Type:   Debug
    Testing: ON
    Build Options:
      BZip2    : ON
      ZFP      : ON
      SZ       : ON
      MGARD    : OFF
      MPI      : ON
      DataMan  : ON
      WDM      : ON
      SST      : OFF
      ZeroMQ   : ON
      HDF5     : ON
      Python   : ON
      Fortran  : ON
      SysVShMem: ON
      Endian_Reverse: ON