Add conditional support for RTEMS PCI to the waf build.

Check for the "rtems/pci.h" header and provide conditional build support
with waf to build for BSPs that do not have PCI support. The Makefile build
always defines HAVE_RTEMS_PCI_H which is the same state with this change.

The PCI calls still exist however they do nothing and return a constant.
Any PCI based driver that makes these calls on a BSP that does not have
PCI support will not work which is understandable. Either change the
driver or add PCI support the BSP.

1 files changed, 7 insertions, 1 deletions

diff --git a/rtemsbsd/rtems/rtems-bsd-pci_bus.c b/rtemsbsd/rtems/rtems-bsd-pci_bus.c
index f673083b..f687e0f5 100644
--- a/rtemsbsd/rtems/rtems-bsd-pci_bus.c
+++ b/rtemsbsd/rtems/rtems-bsd-pci_bus.c
@@ -52,21 +52,27 @@ __FBSDID("$FreeBSD$");
 
 #include <rtems/bsd/local/pcib_if.h>
 #define pci_find_device rtems_pci_find_device
+#if HAVE_RTEMS_PCI_H
 #include <rtems/pci.h>
+#endif
 #include <machine/bus.h>
 
 int
 pcibios_pcib_route_interrupt(device_t pcib, device_t dev, int pin)
 {
+#if HAVE_RTEMS_PCI_H
   int     bus;
   int     slot;
   int     func;
   uint8_t irq;
- 
+
   bus  = pci_get_bus(dev);
   slot = pci_get_slot(dev);
   func = pci_get_function(dev);
 
   pci_read_config_byte(bus, slot, func, PCI_INTERRUPT_LINE, &irq);
   return irq;
+#else
+  return 0;
+#endif
 }