--- configure.ac.orig	2026-06-07 07:26:03 UTC
+++ configure.ac
@@ -153,7 +153,11 @@ CPPFLAGS="$SAVE_CPPFLAGS"
 
 CPPFLAGS="$SAVE_CPPFLAGS"
 
-PKG_CHECK_MODULES([PCIACCESS], [pciaccess >= 0.8.0])
+PKG_CHECK_MODULES([PCIACCESS], [pciaccess >= 0.8.0], [LIBPCIACCESS=yes], [LIBPCIACCESS=no])
+if test "x$LIBPCIACCESS" = xyes; then
+	AC_DEFINE(HAVE_PCI_DEVICE_IS_BOOT_DISPLAY, 1, [libpciaccess support])
+fi
+
 XORG_CFLAGS="$XORG_CFLAGS $PCIACCESS_CFLAGS"
 
 # Checks for headers/macros for byte swapping