← Back to archive
Programming Notes

Create find.pl to Compile OpenSSL with Perl 5

Some tools still rely on the old openssl library, which is needed when compiling — for example, Google Earth Enterprise uses openssl 1.0.2h. Direct compilation on CentOS 7 installed in a virtual machine will fail. The find.pl file you create must be placed in a directory that is on Perl's @INC path, so that Perl can find it (e.g. /usr/lib64/perl5); then compilation will succeed.


warn "Legacy library @{[(caller(0))[6]]} will be removed from the Perl core distribution in the next major release. Please install it from the CPAN distribution Perl4::CoreLibs. It is being used at @{[(caller)[1]]}, line @{[(caller)[2]]}.\n";

# This library is deprecated and unmaintained. It is included for
# compatibility with Perl 4 scripts which may use it, but it will be
# removed in a future version of Perl. Please use the File::Find module
# instead.

# Usage:
#	require "find.pl";
#
#	&find('/foo','/bar');
#
#	sub wanted { ... }
#		where wanted does whatever you want.  $dir contains the
#		current directory name, and $_ the current filename within
#		that directory.  $name contains "$dir/$_".  You are cd'ed
#		to $dir when the function is called.  The function may
#		set $prune to prune the tree.
#
# For example,
#
#   find / -name .nfs\* -mtime +7 -exec rm -f {} \; -o -fstype nfs -prune
#
# corresponds to this
#
#	sub wanted {
#	    /^\.nfs.*$/ &&
#	    (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
#	    int(-M _) > 7 &&
#	    unlink($_)
#	    ||
#	    ($nlink || (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_))) &&
#	    $dev < 0 &&
#	    ($prune = 1);
#	}
#
# Set the variable $dont_use_nlink if you're using AFS, since AFS cheats.

use File::Find ();

*name		= *File::Find::name;
*prune		= *File::Find::prune;
*dir		= *File::Find::dir;
*topdir		= *File::Find::topdir;
*topdev		= *File::Find::topdev;
*topino		= *File::Find::topino;
*topmode	= *File::Find::topmode;
*topnlink	= *File::Find::topnlink;

sub find {
    &File::Find::find(\&wanted, @_);
}

1;

Written by Master Sanfu on July 3, 2017. Please credit the source if you share.

Translation Notice: This English version was translated with AI assistance. Specialized, historical, religious, or culturally sensitive terms may contain nuances, inaccuracies, or debatable wording. In case of ambiguity or discrepancy, the original Chinese text shall prevail.