Installing im3shape
-------------------

1) Make sure you have or install these pre-requisites:
  -  a C compiler (e.g. gcc/icc/clang)
  -  cfitsio
  -  gsl (the GNU Science Library)
  -  fftw
  -  a fortran compiler (e.g. gfortran/ifort)
  -  python 2.6 or 2.7

2) Create a file Makefile.local.  In it you need to set the values of the 
   Makefile variables:
  - CC       # Your C compiler
  - CFLAGS   # Flags for your C compiler, especially include paths for the
             # prerequisites above, also optimization
  - F90      # Your Fortran compiler
  - F77      # Your Fortran-77 compiler, probably the same as F90
  - FFLAGS   # Fortran compiler flags
  - PYTHON   # Your python executable, 2.6 or 2.7.  Probably just "python"
  - LINK     # Linker flags, especially -L paths to libraries above and
             # -lcfitsio, etc., to use the libraries.
You can see some example Makefile.local files in 
Makefile.local.example1

3) 
make clean 
make



Experts only
------------

Do the regression test of the python driver cf the c driver:
cd example
./run_example.sh


To use the experimental WCS code, add WCS=1 to your Makefile.local


If you want to try single precision (faster, noticably less accurate, if 
you are not sure then don't), you can also set:

SINGLE_PRECISION=1