FWIW, I can confirm that $^X isn't working properly on Solaris.

It seems that - on Linux - the path to the executable is determined via /proc/self/exe1. At least that's the impression I get from a quick look at the source, as well as the strace output of perl -e 'print "$^X\n"'.  Unfortunately, Solaris doesn't seem to have /proc/self/exe.

A little digging shows that - on Solaris (10) - something like 

$ perl -e 'printf "%s\n", readlink "/proc/self/path/a.out"'
/usr/local/perl-5.8.4/bin/perl

[download]

may have a better chance to provide the info that the symlink /proc/self/exe holds on Linux... (on this Solaris box, I currently don't have Perl-5.10, so I tested with an older version — the $^X mechanism doesn't seem to have changed much since, anyway).

(might do some more thorough digging later... as time permits — in which case I'll update the node)

___

1 in case you want to look at the respective code fragments yourself, grep for one of S_set_caret_X, S_procself_val, PROCSELFEXE_PATH, HAS_PROCSELFEXE.

___

Update: (Note to the OP) In case the /proc/self/path/a.out symlink is working for you, too, you could try to extend the Configure script here (line 15563): 

procselfexe=''
val="$undef"
case "$d_readlink" in
"$define")
    if $issymlink /proc/self/exe ; then
        $ls -l /proc/self/exe > reflect
        if $contains /`basename $ls` reflect >/dev/null 2>&1; then
            echo "You have Linux-like /proc/self/exe."
            procselfexe='"/proc/self/exe"'
            val="$define"
        fi
    fi
    ...

[download]

and see if it works then...

In reply to Re: Relocatable Perl 5.10.0 on Solaris by almut
in thread Relocatable Perl 5.10.0 on Solaris by Anonymous Monk

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