The z88dk devel kit works fine for my ti83 regular.
Thank you for this great software

It's not so easy to make it working because for ti83 regular without shell you need to squish code so your -create-app doesn't works.
I must use :
all:
zcc +ti83ansi -lm -startup=10 -o hello hello.c
bin2bin83 hello
bin2var output.bin OUTPUT.83p
clean:
rm *.83p
Here bin2bin83 is for squishing.
bin2var is to replace -create-app.
-startup=10 is for plain TIOS (no shell).
The generated code is a bit long but it works

see http://www.yaronet.com/posts.php?s=138500
But when I try to use gray.h lib I got a compilation error (linker I think?!).
tib@cobra:~/Code/z80/C/gray$ make
zcc +ti83ansi -lm -startup=10 -o hello hello.c
cp /usr/share/z88dk/lib/ti83_crt0.opt /tmp/tmpXXWvhZpD.opt
cp /tmp/tmpXXWvhZpD.opt /tmp/tmpXXWvhZpD.asm
z88dk-zcpp -I. -DZ80 -DSMALL_C -DTI83 -D__TI83__ -DSCCZ80 -I/usr/share/z88dk/include hello.c /tmp/tmpXXkBTfBp.i
z88dk-sccz80 -// -startup=10 /tmp/tmpXXkBTfBp.i
z88dk-copt /usr/share/z88dk/lib/z80rules.2 < /tmp/tmpXXkBTfBp.asm > /tmp/tmpXXkBTfBp.op1
z88dk-copt /usr/share/z88dk/lib/z80rules.1 < /tmp/tmpXXkBTfBp.op1 > /tmp/tmpXXkBTfBp.opt
z88dk-z80asm -eopt -ns -Mo /tmp/tmpXXkBTfBp.opt
z88dk-z80asm -a -m -Mo -ohello -i/usr/share/z88dk/lib/clibs/gen_math -i/usr/share/z88dk/lib/clibs/ndos -i/usr/share/z88dk/lib/clibs/ti83ansi_clib -i/usr/share/z88dk/lib/clibs/z80_crt0 /tmp/tmpXXWvhZpD.opt /tmp/tmpXXkBTfBp.o
1 errors occurred during assembly
Key to filenames:
/tmp/tmpXXkBTfBp.o = hello.c
File '/tmp/tmpXXkBTfBp.asm', Module 'HELLO', Symbol not defined
Error in expression G_PLOT
make: *** [all] Error 1
Here is the code :
1 #include <stdio.h>
2 #include <gray.h>
3
4 main() {
5
6 printf("hello world\n\n\n\n");
7 while (1) {
8 // ne finit jamais
9 g_plot(4, 4, 0);
10 }
11
12
13 }
I got the same error while compiling startrek example code snippets (no error for tictactoe and ansi test example).
What is the problem?
Is there some path variable to define to say to linker where is gray.h (in my case it's /usr/share/z88dk/include/gray.h)
Could you help me please?
Best regards.
Thibault Duponchelle.