According to Joao Miguel:

Can anyone tell me if GPC 2.0 supports units (like borland's) and how ?

It does, just like Borland Pascal.

I downloaded the zip file bpcompat-1.0.zip that encloses a lot of very useful units. When trying to compile the program test.pas that comes on it, the compiler "says": "no exported interface matching gpctypes" and so on. One error for each uses clause.

Like with Borland Pascal, you must either first "compile" all Units, and then the main program,

gpc -c myfirstunit.pas gpc -c mysecondunit.pas gpc myprogram.pas myfirstunit.o mysecondunit.o -o myprogram

or else you "make" the program, i.e. you tell the compiler to compile all Units automatically. With GPC, this is done with the `--automake' option. The following

gpc --automake myprogram.pas -o myprogram

automatically compiles `myfirstunit' and `mysecondunit' and links them to the main program.

(* Just for completeness: The `-o myprogram' means: output an executable `myprogram' (or `myprogram.exe') rather than `a.out' (or `a.exe'). *)

Hope this helps,

Peter

Dipl.-Phys. Peter Gerwinski, Essen, Germany, free physicist and programmer peter.gerwinski@uni-essen.de - http://home.pages.de/~peter.gerwinski/ [970201] maintainer GNU Pascal [970714] - http://home.pages.de/~gnu-pascal/ [970125]