in glibc 2.7, asm/unistd.h is:
# ifdef __i386__
#  include "unistd_32.h"
# else
#  include "unistd_64.h"
# endif

it must become:

if(defined(&__i386__)) {
    require 'asm/unistd_32.ph';
} else {
    require 'asm/unistd_64.ph';
}

diff -p -up utils/h2ph.PL.orig utils/h2ph.PL
--- utils/h2ph.PL.orig	2009-08-07 12:24:51.000000000 +0200
+++ utils/h2ph.PL	2009-08-07 12:36:31.000000000 +0200
@@ -186,10 +186,15 @@
                       print OUT $t,"unless(defined(\&$name)) {\n    sub $name () {\t",$new,";}\n}\n";
 		    }
 		}
-	    } elsif (/^(include|import|include_next)\s*([<\"])(.*)[>\"]/) {
+	    } elsif (/^(include|import|include_next)\s*([<\"])(.*)([>\"])/) {
+
                 $incl_type = $1;
                 $incl_quote = $2;
                 $incl = $3;
+                if ($4 eq '"') {
+                     $incl = "$1$incl" if $file =~ m!(.*/)! && -e "$1$incl";
+                }
+
                 if (($incl_type eq 'include_next') ||
                     ($opt_e && exists($bad_file{$incl}))) {
                     $incl =~ s/\.h$/.ph/;