import os

# methods that should be added to env
def filterWarnings(self, flags):
	return ' '.join(
		flag
		for flag in flags
		if not flag.startswith('-W')
		)

# taken from scons wiki
def CheckPKGConfig(context, version):
        context.Message( 'Checking for pkg-config version > %s... ' % version)
        ret = context.TryAction('pkg-config --atleast-pkgconfig-version=%s' % version)[0]
        context.Result( ret )
        return ret
    
def CheckPKG(context, name):
        context.Message( 'Checking for %s... ' % name )
        ret = context.TryAction('pkg-config --exists \'%s\'' % name)[0]
        context.Result( ret )
        return ret


def CheckSDL(context, version):
        context.Message( 'Checking for sdl lib version > %s... ' % version)
        sdl_config = context.env.WhereIs('sdl-config')
        if sdl_config == None:
                ret = 0
        else:
                found_ver = os.popen('sdl-config --version').read().strip()
                required = [int(n) for n in version.split(".")]
                found  = [int(n) for n in found_ver.split(".")]
                ret = (found >= required)
                
        context.Result( ret )
        return ret