--- perl-5.6.0/ext/Errno/Errno_pm.PL.pix	Sat Mar  4 05:26:54 2000
+++ perl-5.6.0/ext/Errno/Errno_pm.PL	Sun Nov  5 21:41:49 2000
@@ -29,6 +29,13 @@
             warn "Cannot open '$file'";
             return;
 	}     
+    } elsif ($^O eq 'linux') {
+	# With the -dM option option, gcc outputs every #define's it finds
+	my $cpp = default_cpp();
+	unless(open(FH, "$cpp -dM < $file |")) {
+            warn "Cannot open '$file'";
+            return;
+	}
     } else {
 	unless(open(FH,"< $file")) {
 	    # This file could be a temporary file created by cppstdin
@@ -79,6 +86,8 @@
     } elsif ($^O eq 'vmesa') {
 	# OS/390 C compiler doesn't generate #file or #line directives
 	$file{'../../vmesa/errno.h'} = 1;
+    } elsif ($^O eq 'linux') {
+	$file{'/usr/include/errno.h'} = 1;
     } else {
 	open(CPPI,"> errno.c") or
 	    die "Cannot open errno.c";