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 <m...@bish.net> 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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