static function run_check_templates( $task=null, $args=array(), $cliopts=array() )
    {
        $opts = self::getOpts( @$args[0], @$args[1], $cliopts );
        if ( !SharedLock::acquire( $opts['extension']['name'], LOCK_SH, $opts ) )
            throw new PakeException( "Source code locked by another process" );

        $destdir = self::getBuildDir( $opts ) . '/' . $opts['extension']['name'];
        $files = pakeFinder::type( 'file' )->name( array( '*.tpl' ) )->maxdepth( 0 )->in( $destdir );
        if ( count( $files ) )
        {
            $php = self::getTool( 'php', $opts );
            if ( strpos( pake_sh( $php . " -v" ), 'PHP' ) === false )
            {
                SharedLock::release( $opts['extension']['name'], LOCK_SH, $opts );
                throw new pakeException( "$php does not seem to be a valid php executable" );
            }

            $ezp = @$opts['ezublish']['install_dir_LS'];
            if ( $ezp == '' )
            {
                // assume we're running inside an eZ installation
                $ezp = '../..';
            }
            if ( !file_exists( $ezp . '/bin/php/eztemplatecheck.php' ) )
            {
                SharedLock::release( $opts['extension']['name'], LOCK_SH, $opts );
                throw new pakeException( "$ezp does not seem to be a valid eZ Publish install" );
            }

            // get absolute path to build dir
            $rootpath =  pakeFinder::type( 'directory' )->name( $opts['extension']['name'] )->in( self::getBuildDir( $opts ) );
            $rootpath = dirname( $rootpath[0] );
            $out = pake_sh( "cd " . escapeshellarg( $ezp ) . " && " . escapeshellarg( $php ) . " bin/php/eztemplatecheck.php " . escapeshellarg( $rootpath ) );
            if ( strpos( $out, 'Some templates did not validate' ) !== false )
            {
                SharedLock::release( $opts['extension']['name'], LOCK_SH, $opts );
                throw new pakeException( $out );
            }
        }

        SharedLock::release( $opts['extension']['name'], LOCK_SH, $opts );
    }