Function builtin_update_now

v2/engine/builtins.c:1414–1476

Takes a list of target names and immediately updates them. * * Parameters: * 1. Target list. * 2. Optional file descriptor (converted to a string) for a log file where all * the related build output should be redirected. * 3. If specified, makes the build temporarily disable the -n option, i.e. * forces all needed out-of-date targets to be rebuilt. * 4. If specified, makes the

 *     forces the build to continue even if one of the targets fails to build.
 */
LIST * builtin_update_now( FRAME * frame, int flags )
{
    LIST * targets = lol_get( frame->args, 0 );
    LIST * log = lol_get( frame->args, 1 );
    LIST * force = lol_get( frame->args, 2 );
    LIST * continue_ = lol_get( frame->args, 3 );
    int status;
    int original_stdout = 0;
    int original_stderr = 0;
    int original_noexec = 0;
    int original_quitquick = 0;

    if ( !list_empty( log ) )
    {
        /* Temporarily redirect stdout and stderr to the given log file. */
        int const fd = atoi( object_str( list_front( log ) ) );
        original_stdout = dup( 0 );
        original_stderr = dup( 1 );
        dup2( fd, 0 );
        dup2( fd, 1 );
    }

    if ( !list_empty( force ) )
    {
        original_noexec = globs.noexec;
        globs.noexec = 0;
    }

    if ( !list_empty( continue_ ) )
    {
        original_quitquick = globs.quitquick;
        globs.quitquick = 0;
    }

    status = make( targets, anyhow );

    if ( !list_empty( force ) )
    {
        globs.noexec = original_noexec;
    }

    if ( !list_empty( continue_ ) )
    {
        globs.quitquick = original_quitquick;
    }

    if ( !list_empty( log ) )
    {
        /* Flush whatever stdio might have buffered, while descriptions 0 and 1
         * still refer to the log file.
         */
        fflush( stdout );
        fflush( stderr );
        dup2( original_stdout, 0 );
        dup2( original_stderr, 1 );
        close( original_stdout );
        close( original_stderr );
    }