[Gcl-devel] Foreign C with pipe(2) and dup(2)

[Todd Kelley]

Hello GCL Developers!

I have a "callc.lsp" file that uses defentry to define some lisp 
functions in terms of C code that involves calls to pipe(2), dup(2), and 
fork(2).  The last time I tried it out was with AKCL-1-625 on Solaris 
for Intel, and I remember in order to get "callc.o" to load, I needed to 
recompile ackl with dup.o and pipe.o (ar x libc.a pipe.o, etc) linked 
in.  I'm having no luck trying something similar with GCL-2.5.3.

NOW I'M ON Redhat 8.0, with GCL, and it seems much is different from the 
AKCL/Solaris86 days.  I've tried defining EXTRAS= in various ways 
prescribed by various snippets of documentation I've found in various 
places.  I've tried (load "pipe.o") which gives an unresolved 
__syscall_error.  I've tried linking pipe.o and dup.o into saved_kcl and 
get unresolved __syscall_error errors.  I've tried a few other things in 
attepts to get those symbols into the mix, with no joy.  (compile 
"callc.lsp") is fine, but (load "callc.lsp") always gives

>(load "callc.o")

Loading callc.o
pipe is undefined

Error: Cannot get relocated section contents

Fast links are on: do (si::use-fast-links nil) for debugging
Error signalled by EVAL.
Broken at LOAD.  Type :H for Help.
>>

Can anyone tell me if this is possible with GCL on Linux, and if so, how 
I should go about loading a lisp file with clines that call pipe(2), 
dup(2), and fork(2)?  I know I was able to do it with AKCL-1-625 on 
Solaris Intel (probably Solaris 2.4 or 2.5).

Cheers,
Todd