Re: Perl isn't compiling and other random questions

I'm guessing you are on a MMU-less system?  We had tried to get perl to
work on ours by a simple find and replace fork w vfork but we ran into
issues.  This was a few years back, but if I remember right anytime we'd
pass something off to the shell it would generate a segmentation fault.

For us we were just playing around, so didn't dig too deep trying to get it
running on our system.

On Tue, Aug 28, 2012 at 11:26 AM, Mark Bishop <[email protected]> wrote:

> I'm getting errors building perl from the SVN head.  Should I just move
> the offending line from fork() to vfork() and be done with it or is this
> something bigger?  My goal is to use perl for some simple CGI web pages
> from boa.  Would python be a better option?  (However, I have no experience
> with python.)  I'm not sure if miniperl has everything I need until I try
> it.
>
> mark@linux-hez9:~/new_image/**uclinux-dist-ipc> make user/perl_only
> make[1]: Entering directory `/home/mark/new_image/uclinux-**dist-ipc/user'
> touch perl/.sgbuilt_user && make -C perl -j1
> make[2]: Entering directory `/home/mark/new_image/uclinux-**
> dist-ipc/user/perl'
> bfin-linux-uclibc-gcc -mcpu=bf548-0.2 -o miniperl \
>             miniperlmain.o opmini.o libperl.a -lnsl -ldl -lm -lcrypt
> -lutil -lc
> libperl.a(util.o): In function `Perl_my_fork':
> /home/mark/new_image/uclinux-**dist-ipc/user/perl/util.c:**2360:
> undefined reference to `_fork'
> /home/mark/new_image/uclinux-**dist-ipc/user/perl/util.c:**2360:
> undefined reference to `_fork'
> /home/mark/new_image/uclinux-**dist-ipc/user/perl/util.c:**2360:
> undefined reference to `_fork'
> collect2: ld returned 1 exit status
> make[2]: *** [miniperl] Error 1
> make[2]: Leaving directory `/home/mark/new_image/uclinux-**
> dist-ipc/user/perl'
> make[1]: *** [perl_only] Error 2
> make[1]: Leaving directory `/home/mark/new_image/uclinux-**dist-ipc/user'
> make: *** [user/perl_only] Error 2
> mark@linux-hez9:~/new_image/**uclinux-dist-ipc>
>
> Offending code in util.c:
>
> Pid_t
> Perl_my_fork(void)
> {
> #if defined(HAS_FORK)
>     Pid_t pid;
> #if (defined(USE_5005THREADS) || defined(USE_ITHREADS)) &&
> !defined(HAS_PTHREAD_ATFORK)
>     atfork_lock();
>     pid = fork();
>     atfork_unlock();
> #else
>     /* atfork_lock() and atfork_unlock() are installed as pthread_atfork()
>      * handlers elsewhere in the code */
>     pid = fork();                            <<<------   HERE
> #endif
>     return pid;
> #else
>     /* this "canna happen" since nothing should be calling here if
> !HAS_FORK */
>     Perl_croak_nocontext("fork() not available");
>     return 0;
> #endif /* HAS_FORK */
> }
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