import os
import sys

# Read in build options
opts = Options('build_options.py')
opts.Add('CFLAGS', 'Flags passed to the C Compiler')

env = Environment(options = opts, CCFLAGS=['${CFLAGS}'])

Help(opts.GenerateHelpText(env))

# Find the path for Python.h and then share it to other SConscripts later on
# Where to find the Python.h
if sys.platform == 'win32':
    # Prefer MinGW over MSVC
    env['TOOLS'] = 'mingw'

    python_include = os.path.join(sys.exec_prefix, 'include')
    # Windows installs need to be told the lib path and the python library name
    # else it won't work right.
    python_libdir = os.path.join(sys.exec_prefix, 'libs')
    try:
        env['LIBPATH'] += [python_libdir]
    except KeyError:
        env['LIBPATH'] = [python_libdir]
    python_libname = 'python%d%d' % (sys.version_info[0], sys.version_info[1])
    try:
        env['LIBS'] += [python_libname]
    except KeyError:
        env['LIBS'] = [python_libname]
else:
    python_include = os.path.join(os.path.join(sys.exec_prefix, 'include'),
                                  'python' + sys.version[:3])
    
# Check existence of Python.h
headerfile = python_include + os.sep + 'Python.h'
try:
    open(headerfile, 'r')
except:
    raise """Did not find Python header file %s.
    Make sure files for Python C-extensions are installed.
    In debian linux, for example, you need to install a
    package called something like python2.3-dev""" %headerfile

try:
    env['CPPPATH'] += [python_include]
except KeyError:
    env['CPPPATH'] = [python_include]

Export('env')

SConscript(['inundation/SConscript'])