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//proc/self/root/usr/bin/perlivp

#!/usr/bin/perl
    eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'
        if $running_under_some_shell;

# perlivp V 0.02

sub usage {
    warn "@_\n" if @_;
    print << "    EOUSAGE";
Usage:

$0 [-a] [-p] [-v] | [-h]

-a Run all tests (default is to skip .ph tests)
    -p Print a preface before each test telling what it will test.
    -v Verbose mode in which extra information about test results
       is printed.  Test failures always print out some extra information
       regardless of whether or not this switch is set.
    -h Prints this help message.
    EOUSAGE
    exit;
}

use vars qw(%opt); # allow testing with older versions (do not use our)

@opt{ qw/? H h P p V v/ } = qw(0 0 0 0 0 0 0);

while ($ARGV[0] =~ /^-/) {
    $ARGV[0] =~ s/^-//; 
    for my $flag (split(//,$ARGV[0])) {
        usage() if '?' =~ /\Q$flag/;
        usage() if 'h' =~ /\Q$flag/;
        usage() if 'H' =~ /\Q$flag/;
        usage("unknown flag: `$flag'") unless 'HhPpVva' =~ /\Q$flag/;
        warn "$0: `$flag' flag already set\n" if $opt{$flag}++;
    } 
    shift;
}

$opt{p}++ if $opt{P};
$opt{v}++ if $opt{V};

my $pass__total = 0;
my $error_total = 0;
my $tests_total = 0;

my $perlpath = '/usr/bin/perl';
my $useithreads = 'define';

print "## Checking Perl binary via variable `\$perlpath' = $perlpath.\n" if $opt{'p'};

if (-x $perlpath) {
    print "## Perl binary `$perlpath' appears executable.\n" if $opt{'v'};
    print "ok 1\n";
    $pass__total++;
}
else {
    print "# Perl binary `$perlpath' does not appear executable.\n";
    print "not ok 1\n";
    $error_total++;
}
$tests_total++;

print "## Checking Perl version via variable `\$]'.\n" if $opt{'p'};

my $ivp_VERSION = 5.008008;

if ($ivp_VERSION eq $]) {
    print "## Perl version `$]' appears installed as expected.\n" if $opt{'v'};
    print "ok 2\n";
    $pass__total++;
}
else {
    print "# Perl version `$]' installed, expected $ivp_VERSION.\n";
    print "not ok 2\n";
    $error_total++;
}
$tests_total++;

print "## Checking roots of the Perl library directory tree via variable `\@INC'.\n" if $opt{'p'};

my $INC_total = 0;
my $INC_there = 0;
foreach (@INC) {
    next if $_ eq '.'; # skip -d test here
    if ($^O eq 'MacOS') {
        next if $_ eq ':'; # skip -d test here
        next if $_ eq 'Dev:Pseudo:'; # why is this in @INC?
    }
    if (-d $_) {
        print "## Perl \@INC directory `$_' exists.\n" if $opt{'v'};
        $INC_there++;
    }
    else {
        print "# Perl \@INC directory `$_' does not appear to exist.\n";
    }
    $INC_total++;
}
if ($INC_total == $INC_there) {
    print "ok 3\n";
    $pass__total++;
}
else {
    print "not ok 3\n";
    $error_total++;
}
$tests_total++;

print "## Checking installations of modules necessary for ivp.\n" if $opt{'p'};

my $needed_total = 0;
my $needed_there = 0;
foreach (qw(Config.pm ExtUtils/Installed.pm)) {
    $@ = undef;
    $needed_total++;
    eval "require \"$_\";";
    if (!$@) {
        print "## Module `$_' appears to be installed.\n" if $opt{'v'};
        $needed_there++;
    }
    else {
        print "# Needed module `$_' does not appear to be properly installed.\n";
    }
    $@ = undef;
}
if ($needed_total == $needed_there) {
    print "ok 4\n";
    $pass__total++;
}
else {
    print "not ok 4\n";
    $error_total++;
}
$tests_total++;

print "## Checking installations of extensions built with perl.\n" if $opt{'p'};

use Config;

my $extensions_total = 0;
my $extensions_there = 0;
if (defined($Config{'extensions'})) {
    my @extensions = split(/\s+/,$Config{'extensions'});
    foreach (@extensions) {
        next if ($_ eq '');
        if ( $useithreads !~ /define/i ) {
            next if ($_ eq 'threads');
            next if ($_ eq 'threads/shared');
        }
        next if ($_ eq 'Devel/DProf'); 
           # VMS$ perl  -e "eval ""require \""Devel/DProf.pm\"";"" print $@"
           # \NT> perl  -e "eval \"require 'Devel/DProf.pm'\"; print $@"
           # DProf: run perl with -d to use DProf.
           # Compilation failed in require at (eval 1) line 1.
        eval " require \"$_.pm\"; ";
        if (!$@) {
            print "## Module `$_' appears to be installed.\n" if $opt{'v'};
            $extensions_there++;
        }
        else {
            print "# Required module `$_' does not appear to be properly installed.\n";
            $@ = undef;
        }
        $extensions_total++;
    }

# A silly name for a module (that hopefully won't ever exist).
    # Note that this test serves more as a check of the validity of the
    # actuall required module tests above.
    my $unnecessary = 'bLuRfle';

if (!grep(/$unnecessary/, @extensions)) {
        $@ = undef;
        eval " require \"$unnecessary.pm\"; ";
        if ($@) {
            print "## Unnecessary module `$unnecessary' does not appear to be installed.\n" if $opt{'v'};
        }
        else {
            print "# Unnecessary module `$unnecessary' appears to be installed.\n";
            $extensions_there++;
        }
    }
    $@ = undef;
}
if ($extensions_total == $extensions_there) {
    print "ok 5\n";
    $pass__total++;
}
else {
    print "not ok 5\n";
    $error_total++;
}
$tests_total++;

print "## Checking installations of later additional extensions.\n" if $opt{'p'};

use ExtUtils::Installed;

my $installed_total = 0;
my $installed_there = 0;
my $version_check = 0;
my $installed = ExtUtils::Installed -> new();
my @modules = $installed -> modules();
my @missing = ();
my $version = undef;
for (@modules) {
    $installed_total++;
    # Consider it there if it contains one or more files,
    # and has zero missing files,
    # and has a defined version
    $version = undef;
    $version = $installed -> version($_);
    if ($version) {
        print "## $_; $version\n" if $opt{'v'};
        $version_check++;
    }
    else {
        print "# $_; NO VERSION\n" if $opt{'v'};
    }
    $version = undef;
    @missing = ();
    @missing = $installed -> validate($_);
    if ($#missing >= 0) {
        print "# file",+($#missing == 0) ? '' : 's'," missing from installation:\n";
        print '# ',join(' ',@missing),"\n";
    }
    elsif ($#missing == -1) {
        $installed_there++;
    }
    @missing = ();
}
if (($installed_total == $installed_there) && 
    ($installed_total == $version_check)) {
    print "ok 6\n";
    $pass__total++;
}
else {
    print "not ok 6\n";
    $error_total++;
}
$tests_total++;

if ($opt{'a'}) {
print "## Checking installations of *.h -> *.ph header files.\n" if $opt{'p'};
my $ph_there = 0;
my $var = undef;
my $val = undef;
my $h_file = undef;
# Just about "any" C implementation ought to have a stdio.h (even if 
# Config.pm may not list a i_stdio var).
my @ph_files = qw(stdio.ph);
# Add the ones that we know that perl thinks are there:
while (($var, $val) = each %Config) {
    if ($var =~ m/i_(.+)/ && $val eq 'define') {
        $h_file = $1;
	# Some header and symbol names don't match for hysterical raisins.
	$h_file = 'arpa/inet'    if $h_file eq 'arpainet';
	$h_file = 'netinet/in'   if $h_file eq 'niin';
	$h_file = 'netinet/tcp'  if $h_file eq 'netinettcp';
	$h_file = 'sys/resource' if $h_file eq 'sysresrc';
	$h_file = 'sys/select'   if $h_file eq 'sysselct';
	$h_file = 'sys/security' if $h_file eq 'syssecrt';
        $h_file = 'rpcsvc/dbm'   if $h_file eq 'rpcsvcdbm';
        # This ought to distinguish syslog from sys/syslog.
        # (NB syslog.ph is heavily used for the DBI pre-requisites).
        $h_file =~ s{^sys(\w.+)}{sys/$1} unless $h_file eq 'syslog';
        push(@ph_files, "$h_file.ph");
    }
}
#foreach (qw(stdio.ph syslog.ph)) {
foreach (@ph_files) {
    $@ = undef;
    eval "require \"$_\";";
    if (!$@) {
        print "## Perl header `$_' appears to be installed.\n" if $opt{'v'};
        $ph_there++;
    }
    else {
        print "# Perl header `$_' does not appear to be properly installed.\n";
    }
    $@ = undef;
}

if (scalar(@ph_files) == $ph_there) {
    print "ok 7\n";
    $pass__total++;
}
else {
    print "not ok 7\n";
    $error_total++;
}
$tests_total++;
}
else {
    print "##  Skip checking of *.ph header files.\n" if $opt{'p'};
}

# Final report (rather than feed ousrselves to Test::Harness::runtests()
# we simply format some output on our own to keep things simple and
# easier to "fix" - at least for now.

if ($error_total == 0 && $tests_total) {
    print "All tests successful.\n";
} elsif ($tests_total==0){
        die "FAILED--no tests were run for some reason.\n";
} else {
    my $rate = 0.0;
    if ($tests_total > 0) { $rate = sprintf "%.2f", 100.0 * ($pass__total / $tests_total); }
    printf " %d/%d subtests failed, %.2f%% okay.\n",
                              $error_total, $tests_total, $rate;
}

=head1 NAME

perlivp - Perl Installation Verification Procedure

=head1 SYNOPSIS

B<perlivp> [B<-a>] [B<-p>] [B<-v>] [B<-h>]

=head1 DESCRIPTION

The B<perlivp> program is set up at Perl source code build time to test the
Perl version it was built under.  It can be used after running:

make install

(or your platform's equivalent procedure) to verify that B<perl> and its
libraries have been installed correctly.  A correct installation is verified
by output that looks like:

ok 1
    ok 2

etc.

=head1 OPTIONS

=over 5

=item B<-h> help

Prints out a brief help message.

=item B<-a> run all tests

Normally tests for optional features are skipped.  With -a all tests
are executed.

=item B<-p> print preface

Gives a description of each test prior to performing it.

=item B<-v> verbose

Gives more detailed information about each test, after it has been performed.
Note that any failed tests ought to print out some extra information whether
or not -v is thrown.

=back

=head1 DIAGNOSTICS

=over 4

=item * print "# Perl binary `$perlpath' does not appear executable.\n";

Likely to occur for a perl binary that was not properly installed.
Correct by conducting a proper installation.

=item * print "# Perl version `$]' installed, expected $ivp_VERSION.\n";

Likely to occur for a perl that was not properly installed.
Correct by conducting a proper installation.

=item * print "# Perl \@INC directory `$_' does not appear to exist.\n";

Likely to occur for a perl library tree that was not properly installed.
Correct by conducting a proper installation.

=item * print "# Needed module `$_' does not appear to be properly installed.\n";

One of the two modules that is used by perlivp was not present in the 
installation.  This is a serious error since it adversely affects perlivp's
ability to function.  You may be able to correct this by performing a
proper perl installation.

=item * print "# Required module `$_' does not appear to be properly installed.\n";

An attempt to C<eval "require $module"> failed, even though the list of 
extensions indicated that it should succeed.  Correct by conducting a proper 
installation.

=item * print "# Unnecessary module `bLuRfle' appears to be installed.\n";

This test not coming out ok could indicate that you have in fact installed 
a bLuRfle.pm module or that the C<eval " require \"$module_name.pm\"; ">
test may give misleading results with your installation of perl.  If yours
is the latter case then please let the author know.

=item * print "# file",+($#missing == 0) ? '' : 's'," missing from installation:\n";

One or more files turned up missing according to a run of 
C<ExtUtils::Installed -E<gt> validate()> over your installation.
Correct by conducting a proper installation.

=item * print "# Perl header `$_' does not appear to be properly installed.\n";

Correct by running B<h2ph> over your system's C header files.  If necessary, 
edit the resulting *.ph files to eliminate perl syntax errors.

=back

For further information on how to conduct a proper installation consult the 
INSTALL file that comes with the perl source and the README file for your 
platform.

=head1 AUTHOR

Peter Prymmer

=cut