compilation issue when compiling v6.2.5 with gcc-Version 15.2.1 20260103 (GCC) and ./configure --enable-x11 --disable-wx --enable-objects

[wolfangpauli]

I wanted to compile ucblogo v6.2.5 without wxwidgets but with x11 enabled as emacs (yes, the 40+ year old editor) logo-mode requires the "terminal" version of ucblogo for bidirectional communication between the logo interpreter and the editor.

I was able to compile v6.2.4 with a previous gcc version years ago but miserably failed trying to compile v6.2.5 with gcc 15.2.1 and the configure options in the title on CachyOS Linux.

Error messages are:

term.c: In function 'term_init':
term.c:147:17: error: 'TIOCGETP' undeclared (first use in this function); did you mean 'TIOCGETD'?
147 | ioctl(0,TIOCGETP,(char *)(&tty_cooked));
| ^~~~~~~~
| TIOCGETD
term.c:147:17: note: each undeclared identifier is reported only once for each function it appears in
term.c:148:22: error: 'tty_cooked' has an incomplete type 'struct sgttyb'
148 | tty_cbreak = tty_cooked;
| ^~~~~~~~~~
term.c:148:20: error: 'tty_cbreak' has an incomplete type 'struct sgttyb'
148 | tty_cbreak = tty_cooked;
| ^
term.c:149:19: error: invalid use of undefined type 'struct sgttyb'
149 | tty_cbreak.sg_flags |= CBREAK;
| ^
term.c:149:32: error: 'CBREAK' undeclared (first use in this function); did you mean 'CBRK'?
149 | tty_cbreak.sg_flags |= CBREAK;
| ^~~~~~
| CBRK
term.c:150:19: error: invalid use of undefined type 'struct sgttyb'
150 | tty_cbreak.sg_flags &= ~ECHO;
| ^
term.c:150:33: error: 'ECHO' undeclared (first use in this function)
150 | tty_cbreak.sg_flags &= ~ECHO;
| ^~~~
term.c: In function 'charmode_on':
term.c:206:17: error: 'TIOCSETP' undeclared (first use in this function); did you mean 'TIOCSETD'?
206 | ioctl(0,TIOCSETP,(char *)(&tty_cbreak));
| ^~~~~~~~
| TIOCSETD
term.c: In function 'charmode_off':
term.c:222:17: error: 'TIOCSETP' undeclared (first use in this function); did you mean 'TIOCSETD'?
222 | ioctl(0,TIOCSETP,(char *)(&tty_cooked));
| ^~~~~~~~
| TIOCSETD
term.c: At top level:
term.c:88:15: error: storage size of 'tty_cooked' isn't known
88 | struct sgttyb tty_cooked, tty_cbreak;
| ^~~~~~~~~~
term.c:88:27: error: storage size of 'tty_cbreak' isn't known
88 | struct sgttyb tty_cooked, tty_cbreak;
| ^~~~~~~~~~

I found various hints that describe the error messages and how to get rid of them with AI support, but I took me hours of debugging resulting in new errors.
I also tried the "use_termios" branch of the github repository where - at least - I was able to compile the code unfortunately with tons of "undefined reference" errors.

Hence, my kind request for help. Anybody out there who knows what could be done here ?

Many thanks in advance,
wolfgang_pauli

[jrincayc]

Can you check if #224 fixes this?

[wolfangpauli]

Ok thanks! If I understand correctly you propose to try to compile the "use_termios" branch.

1. I cloned the latest repo version (v6.2.5)
2. cd /ucblogo-code
3. gh pr checkout 224 (this should apply the proposed changes in "configure.ac" and "term.c")
4. autoreconf --install
5. ./configure --enable-x11 --disable-wx --enable-objects
6. make

results in the following error:

In file included from eval.h:4,
from eval.c:26:
eval.c: In function 'evaluator':
logo.h:71:25: error: implicit declaration of function 'check_X11_stop' [-Wimplicit-function-declaration]
71 | #define check_throwing (check_X11_stop() , (stopping_flag == THROWING))
| ^~~~~~~~~~~~~~
eval.c:855:9: note: in expansion of macro 'check_throwing'
855 | if (check_throwing) {

I was already there two days ago and tried to further debug with AI assisted tools. Unfortunately, as I already mentioned above each step towards a solution introduces several other issues....

Thanks in advance for pointing out other directions where to go next...

[jrincayc]

Okay, #224 fixed some of the issues. Can you check if pull #230 fixes the rest? Thanks for pointing out these problems.

P.S. I also use emacs (when not using vi)

[wolfangpauli]

For the records and for others to come easier to success:

I cloned the latest repo version (v6.2.5)

1. cd /ucblogo-code
2. gh pr checkout 224 (this should apply the proposed changes in "configure.ac" and "term.c")
3. autoreconf --install
4. ./configure --enable-x11 --disable-wx --enable-objects
5. make

then still in directory /ucblogo-code

6. make clean
7. gh pr checkout 230
8. follow steps 4) and 5) from above

compiles without issues. MANY, MANY THANKS & congrats for resolving this compilation problem.
The "terminal" version of ucblogo works like a charm!

BTW: It's not only emacs that we have in common -> TI & HP calculators, pebbles,..

cheers,
.wp.

[jrincayc]

BTW: It's not only emacs that we have in common -> TI & HP calculators, pebbles,..

Wait, do we know each other some other place? Feel free to get my email (from my webpage) and send me a message if you want.