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package MakeMaker::Test::Utils;
use File::Spec;
use strict;
use Config;
use vars qw($VERSION @ISA @EXPORT);
require Exporter;
@ISA = qw(Exporter);
$VERSION = 0.02;
@EXPORT = qw(which_perl perl_lib makefile_name makefile_backup
make make_run make_macro calibrate_mtime
);
my $Is_VMS = $^O eq 'VMS';
my $Is_MacOS = $^O eq 'MacOS';
=head1 NAME
MakeMaker::Test::Utils - Utility routines for testing MakeMaker
=head1 SYNOPSIS
use MakeMaker::Test::Utils;
my $perl = which_perl;
perl_lib;
my $makefile = makefile_name;
my $makefile_back = makefile_backup;
my $make = make;
my $make_run = make_run;
make_macro($make, $targ, %macros);
my $mtime = calibrate_mtime;
=head1 DESCRIPTION
A consolidation of little utility functions used through out the
MakeMaker test suite.
=head2 Functions
The following are exported by default.
=over 4
=item B<which_perl>
my $perl = which_perl;
Returns a path to perl which is safe to use in a command line, no
matter where you chdir to.
=cut
sub which_perl {
my $perl = $^X;
$perl ||= 'perl';
# VMS should have 'perl' aliased properly
return $perl if $Is_VMS;
$perl .= $Config{exe_ext} unless $perl =~ m/$Config{exe_ext}$/i;
my $perlpath = File::Spec->rel2abs( $perl );
unless( $Is_MacOS || -x $perlpath ) {
# $^X was probably 'perl'
# When building in the core, *don't* go off and find
# another perl
die "Can't find a perl to use (\$^X=$^X), (\$perlpath=$perlpath)"
if $ENV{PERL_CORE};
foreach my $path (File::Spec->path) {
$perlpath = File::Spec->catfile($path, $perl);
last if -x $perlpath;
}
}
return $perlpath;
}
=item B<perl_lib>
perl_lib;
Sets up environment variables so perl can find its libraries.
=cut
my $old5lib = $ENV{PERL5LIB};
my $had5lib = exists $ENV{PERL5LIB};
sub perl_lib {
# perl-src/t/
my $lib = $ENV{PERL_CORE} ? qq{../lib}
# ExtUtils-MakeMaker/t/
: qq{../blib/lib};
$lib = File::Spec->rel2abs($lib);
my @libs = ($lib);
push @libs, $ENV{PERL5LIB} if exists $ENV{PERL5LIB};
$ENV{PERL5LIB} = join($Config{path_sep}, @libs);
unshift @INC, $lib;
}
END {
if( $had5lib ) {
$ENV{PERL5LIB} = $old5lib;
}
else {
delete $ENV{PERL5LIB};
}
}
=item B<makefile_name>
my $makefile = makefile_name;
MakeMaker doesn't always generate 'Makefile'. It returns what it
should generate.
=cut
sub makefile_name {
return $Is_VMS ? 'Descrip.MMS' : 'Makefile';
}
=item B<makefile_backup>
my $makefile_old = makefile_backup;
Returns the name MakeMaker will use for a backup of the current
Makefile.
=cut
sub makefile_backup {
my $makefile = makefile_name;
return $Is_VMS ? $makefile : "$makefile.old";
}
=item B<make>
my $make = make;
Returns a good guess at the make to run.
=cut
sub make {
my $make = $Config{make};
$make = $ENV{MAKE} if exists $ENV{MAKE};
return $make;
}
=item B<make_run>
my $make_run = make_run;
Returns the make to run as with make() plus any necessary switches.
=cut
sub make_run {
my $make = make;
$make .= ' -nologo' if $make eq 'nmake';
return $make;
}
=item B<make_macro>
my $make_cmd = make_macro($make, $target, %macros);
Returns the command necessary to run $make on the given $target using
the given %macros.
my $make_test_verbose = make_macro(make_run(), 'test',
TEST_VERBOSE => 1);
This is important because VMS's make utilities have a completely
different calling convention than Unix or Windows.
%macros is actually a list of tuples, so the order will be preserved.
=cut
sub make_macro {
my($make, $target) = (shift, shift);
my $is_mms = $make =~ /^MM(K|S)/i;
my $cmd = $make;
my $macros = '';
while( my($key,$val) = splice(@_, 0, 2) ) {
if( $is_mms ) {
$macros .= qq{/macro="$key=$val"};
}
else {
$macros .= qq{ $key=$val};
}
}
return $is_mms ? "$make$macros $target" : "$make $target $macros";
}
=item B<calibrate_mtime>
my $mtime = calibrate_mtime;
When building on NFS, file modification times can often lose touch
with reality. This returns the mtime of a file which has just been
touched.
=cut
sub calibrate_mtime {
open(FILE, ">calibrate_mtime.tmp") || die $!;
print FILE "foo";
close FILE;
my($mtime) = (stat('calibrate_mtime.tmp'))[9];
unlink 'calibrate_mtime.tmp';
return $mtime;
}
=back
=head1 AUTHOR
Michael G Schwern <schwern@pobox.com>
=cut
1;
|
