Document PERL_INSTALL_ROOT of #7210.

p4raw-id: //depot/perl@7413

diff --git a/lib/ExtUtils/Install.pm b/lib/ExtUtils/Install.pm
index 92db8c9..4a148a6 100644 (file)
--- a/lib/ExtUtils/Install.pm
+++ b/lib/ExtUtils/Install.pm
@@ -394,4 +394,7 @@ of the hash to the corresponding values efficiently. Filenames with
 the extension pm are autosplit. Second argument is the autosplit
 directory.
 
+You can have an environment variable PERL_INSTALL_ROOT set which will
+be prepended as a directory to each installed file (and directory).
+
 =cut