fltk which release?

[RyanCode]

cc -std=c++11 -I/usr/local/include -I/usr/local/include/FL/images -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_THREAD_SAFE -D_REENTRANT -c src/tiny2.cxx -o obj/tiny2.o
src/tiny2.cxx:782:8: error: use of undeclared identifier 'fl_chdir'
                if ( fl_chdir(getenv(HOMEDIR))==0 ) {
                     ^
src/tiny2.cxx:900:13: error: no member named 'window_menu_style' in 'Fl_Sys_Menu_Bar'
                pMenuBar->window_menu_style(Fl_Sys_Menu_Bar::no_window_menu);
                ~~~~~~~~  ^
src/tiny2.cxx:900:48: error: no member named 'no_window_menu' in 'Fl_Sys_Menu_Bar'
                pMenuBar->window_menu_style(Fl_Sys_Menu_Bar::no_window_menu);
                                            ~~~~~~~~~~~~~~~~~^
src/tiny2.cxx:903:13: error: no member named 'about' in 'Fl_Sys_Menu_Bar'
                pMenuBar->about(about_cb, NULL);
                ~~~~~~~~  ^
src/tiny2.cxx:945:2: error: use of undeclared identifier 'fl_chdir'
        fl_chdir(cwd);                  //in case cwd was changed in sftp_lcd
        ^
5 errors generated.
make: *** [obj/tiny2.o] Error 1

[yongchaofan]

https://www.fltk.org/software.php?VERSION=1.4.x
latest release used 20210813 snapshot