#-*-python-*-
# SCons Configuration for 'simple' external dependencies.
# The purpose is to configure external dependencies that might be in non-standard locations

import os.path
import SCons
import os.path
import subprocess

ext_deps = {}
pgsql_config = {}

###############################################################
#  EDIT BELOW IF YOU HAVE PROBLEMS WITH EXTERNAL DEPENDENCIES #
###############################################################

# cURL 
# If you want to define things manually comment the following
# two lines and uncomment uncomment the other three
# and edit to match your installation. See comments for more info

# Define external dependency header
ext_deps['CURL'] = {}                           
# Set false if a <package>-config script is in your PATH to configure automatically.
# Set to True if you want to specify the installation location
ext_deps['CURL']['user'] = False
# If previous option was false name the name of the config script
ext_deps['CURL']['config_app'] = 'curl-config'
# if you want to specify the installation directory set 'user' option to True
# ext_deps['bz2']['user'] = True
# If 'user' was set to True you can specify the installation directory 
# ext_deps['bz2']['path'] = /usr/local/curl
# If 'user' was set to true name the libraries without the -l
# ext_deps['bz2']['libs'] = "curl"

# libbz2
ext_deps['bz2'] = {}
ext_deps['bz2']['user'] = True
if os.environ.has_key( "BZIPROOT" ):
    ext_deps['bz2']['path'] = os.environ['BZIPROOT']
else:
    ext_deps['bz2']['path'] = None
ext_deps['bz2']['libs'] = "bz2" # short form for -lbz2




###################################################################
# DO NOT EDIT BELOW THIS POINT UNLESS YOU KNOW WHAT YOU ARE DOING #
###################################################################

  
def config_external(deps):
    """
    Builds a dictionary based on the options passed.
    If flag config is set to auto tries to find a config script to
    obtained the needed data
    """
    env = {'ASFLAGS':[],'CCFLAGS':[],'CPPPATH':[],'LIBPATH':[],'LIBS':[],
           'LINKFLAGS':[]}
    for name,data in deps.iteritems(): 
        print "scons: Adding external dependency on [%s]" % name
        if data['user']:
            # Just add the library to link
            if (data['path'] != None ):
                env['CPPPATH'].append(data['path'] + "/include")
                env['LIBPATH'].append(data['path'] + "/lib")
            env['LIBS'].append(data['libs'])
        else: # Let's try to get the automatic setup
            tmpenv = Environment()
            config_exec = tmpenv.WhereIs(data['config_app'],os.environ['PATH'])
            if config_exec == None:
                print "scons: FATAL ERROR (EXTERNAL.scons)"
                print "scons:             Couldn't find '%s' in PATH." % (data['config_app'])
                print "scons:"
                print "scons:             PATH = (%s)." % (os.environ['PATH'])
                error = SCons.Errors.BuildError()
                error.errstr = "Couldn't find '" + data['config_app'] + "' in PATH."
                error.filename = "EXTERNAL.scons"
                error.status = 2
                error.exitstatus = 2
                raise error
            tmpenv.ParseConfig(config_exec + " --cflags --libs")

            
            for key,data in env.iteritems():
                try:
                    data.append(tmpenv[key])
                except KeyError:
                    pass
    return env



# config the external dependencies
confopts = config_external(ext_deps)

extopts = {}
for key in ['ASFLAGS','CCFLAGS','CPPPATH','LIBPATH','LIBS','LINKFLAGS']:
    extopts[key] = confopts[key] 

Return("extopts")