diff -Naur udev-151-old/configure.ac udev-151-new/configure.ac
--- udev-151-old/configure.ac	2010-01-24 23:21:07.000000000 -0800
+++ udev-151-new/configure.ac	2010-02-20 08:21:22.000000000 -0800
@@ -69,15 +69,13 @@
 	PKG_CHECK_MODULES(USBUTILS, usbutils >= 0.82)
 	AC_SUBST([USB_DATABASE], [$($PKG_CONFIG --variable=usbids usbutils)])
 
-	AC_CHECK_FILES([/usr/share/pci.ids], [pciids=/usr/share/pci.ids])
-	AC_CHECK_FILES([/usr/share/hwdata/pci.ids], [pciids=/usr/share/hwdata/pci.ids])
-	AC_CHECK_FILES([/usr/share/misc/pci.ids], [pciids=/usr/share/misc/pci.ids])
 	AC_ARG_WITH(pci-ids-path,
 		AS_HELP_STRING([--pci-ids-path=DIR], [Path to pci.ids file]),
 		[PCI_DATABASE=${withval}],
-		[if test -n "$pciids" ; then
-			PCI_DATABASE="$pciids"
-		else
+		[AC_CHECK_FILES([/usr/share/pci.ids], [PCI_DATABASE=/usr/share/pci.ids])
+		AC_CHECK_FILES([/usr/share/hwdata/pci.ids], [PCI_DATABASE=/usr/share/hwdata/pci.ids])
+		AC_CHECK_FILES([/usr/share/misc/pci.ids], [PCI_DATABASE=/usr/share/misc/pci.ids])
+		if test -x "$PCI_DATABASE" ; then
 			AC_MSG_ERROR([pci.ids not found, try --with-pci-ids-path=])
 		fi])
 	AC_SUBST(PCI_DATABASE)