From a9d83807f0f0b611a2eea3bda7bb80eac9d5b104 Mon Sep 17 00:00:00 2001
From: Bill Campbell <bill@celestial.com>
Date: Thu, 5 Oct 2000 11:04:51 -0700
Subject: [PATCH] The Install.pm third of

Subject: Proposed patches, Install.pm getopts.pl termcap.pl
Message-ID: <20001005180451.A22029@kstarr.celestial.com>

p4raw-id: //depot/perl@7210
---
 lib/ExtUtils/Install.pm | 71 ++++++++++++++++++++++++++++++++++---------------
 1 file changed, 50 insertions(+), 21 deletions(-)

diff --git a/lib/ExtUtils/Install.pm b/lib/ExtUtils/Install.pm
index 36c7221..92db8c9 100644
--- a/lib/ExtUtils/Install.pm
+++ b/lib/ExtUtils/Install.pm
@@ -16,6 +16,28 @@ my $splitchar = $^O eq 'VMS' ? '|' : ($^O eq 'os2' || $^O eq 'dos') ? ';' : ':';
 my @PERL_ENV_LIB = split $splitchar, defined $ENV{'PERL5LIB'} ? $ENV{'PERL5LIB'} : $ENV{'PERLLIB'} || '';
 my $Inc_uninstall_warn_handler;
 
+# install relative to here
+
+my $INSTALL_ROOT = $ENV{PERL_INSTALL_ROOT};
+
+use File::Spec;
+
+sub install_rooted_file {
+    if (defined $INSTALL_ROOT) {
+	MY->catfile($INSTALL_ROOT, $_[0]);
+    } else {
+	$_[0];
+    }
+}
+
+sub install_rooted_dir {
+    if (defined $INSTALL_ROOT) {
+	MY->catdir($INSTALL_ROOT, $_[0]);
+    } else {
+	$_[0];
+    }
+}
+
 #our(@EXPORT, @ISA, $Is_VMS);
 #use strict;
 
@@ -55,8 +77,9 @@ sub install {
 	opendir DIR, $source_dir_or_file or next;
 	for (readdir DIR) {
 	    next if $_ eq "." || $_ eq ".." || $_ eq ".exists";
-	    if (-w $hash{$source_dir_or_file} ||
-		mkpath($hash{$source_dir_or_file})) {
+		my $targetdir = install_rooted_dir($hash{$source_dir_or_file});
+	    if (-w $targetdir ||
+		mkpath($targetdir)) {
 		last;
 	    } else {
 		warn "Warning: You do not have permissions to " .
@@ -66,7 +89,8 @@ sub install {
 	}
 	closedir DIR;
     }
-    $packlist->read($pack{"read"}) if (-f $pack{"read"});
+    my $tmpfile = install_rooted_file($pack{"read"});
+    $packlist->read($tmpfile) if (-f $tmpfile);
     my $cwd = cwd();
 
     my($source);
@@ -80,11 +104,13 @@ sub install {
 	#October 1997: we want to install .pm files into archlib if
 	#there are any files in arch. So we depend on having ./blib/arch
 	#hardcoded here.
-	my $targetroot = $hash{$source};
+
+	my $targetroot = install_rooted_dir($hash{$source});
+
 	if ($source eq "blib/lib" and
 	    exists $hash{"blib/arch"} and
 	    directory_not_empty("blib/arch")) {
-	    $targetroot = $hash{"blib/arch"};
+	    $targetroot = install_rooted_dir($hash{"blib/arch"});
             print "Files found in blib/arch: installing files in blib/lib into architecture dependent library tree\n";
 	}
 	chdir($source) or next;
@@ -93,8 +119,9 @@ sub install {
                          $atime,$mtime,$ctime,$blksize,$blocks) = stat;
 	    return unless -f _;
 	    return if $_ eq ".exists";
-	    my $targetdir = MY->catdir($targetroot,$File::Find::dir);
-	    my $targetfile = MY->catfile($targetdir,$_);
+	    my $targetdir  = MY->catdir($targetroot, $File::Find::dir);
+	    my $origfile   = $_;
+	    my $targetfile = MY->catfile($targetdir, $_);
 
 	    my $diff = 0;
 	    if ( -f $targetfile && -s _ == $size) {
@@ -129,16 +156,16 @@ sub install {
 	    } else {
 		inc_uninstall($_,$File::Find::dir,$verbose,0); # nonono set to 0
 	    }
-	    $packlist->{$targetfile}++;
+	    $packlist->{$origfile}++;
 
 	}, ".");
 	chdir($cwd) or Carp::croak("Couldn't chdir to $cwd: $!");
     }
     if ($pack{'write'}) {
-	$dir = dirname($pack{'write'});
+	$dir = install_rooted_dir(dirname($pack{'write'}));
 	mkpath($dir,0,0755);
 	print "Writing $pack{'write'}\n";
-	$packlist->write($pack{'write'});
+	$packlist->write(install_rooted_file($pack{'write'}));
     }
 }
 
@@ -289,18 +316,20 @@ sub add {
 }
 
 sub DESTROY {
-    my $self = shift;
-    my($file,$i,$plural);
-    foreach $file (sort keys %$self) {
-	$plural = @{$self->{$file}} > 1 ? "s" : "";
-	print "## Differing version$plural of $file found. You might like to\n";
-	for (0..$#{$self->{$file}}) {
-	    print "rm ", $self->{$file}[$_], "\n";
-	    $i++;
+	unless(defined $INSTALL_ROOT) {
+		my $self = shift;
+		my($file,$i,$plural);
+		foreach $file (sort keys %$self) {
+		$plural = @{$self->{$file}} > 1 ? "s" : "";
+		print "## Differing version$plural of $file found. You might like to\n";
+		for (0..$#{$self->{$file}}) {
+			print "rm ", $self->{$file}[$_], "\n";
+			$i++;
+		}
+		}
+		$plural = $i>1 ? "all those files" : "this file";
+		print "## Running 'make install UNINST=1' will unlink $plural for you.\n";
 	}
-    }
-    $plural = $i>1 ? "all those files" : "this file";
-    print "## Running 'make install UNINST=1' will unlink $plural for you.\n";
 }
 
 1;
-- 
1.8.3.1