xen/common/Makefile: introduce HAS_{CPUFREQ,PCI,PASSTHROUGH,NS16550,KEXEC}

- make the compilation of ns16550.c depend upon HAS_NS16550;

- make the compilation of cpufreq depend upon HAS_CPUFREQ;

- make the compilation of pci depend upon HAS_PCI;

- make the compilation of passthrough depend upon HAS_PASSTHROUGH;

- make the compilation of kexec depend upon HAS_KEXEC.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
---
 xen/arch/ia64/Rules.mk        |    5 +++++
 xen/arch/x86/Rules.mk         |    5 +++++
 xen/common/Makefile           |    2 +-
 xen/common/shutdown.c         |    4 ++++
 xen/drivers/Makefile          |    6 +++---
 xen/drivers/char/Makefile     |    2 +-
 xen/drivers/char/console.c    |    4 ++++
 xen/include/asm-ia64/config.h |    1 +
 xen/include/asm-x86/config.h  |    1 +
 9 files changed, 25 insertions(+), 5 deletions(-)

1 files changed, 4 insertions, 0 deletions

diff --git a/xen/common/shutdown.c b/xen/common/shutdown.c
index e356e86591..b18ef5de6c 100644
--- a/xen/common/shutdown.c
+++ b/xen/common/shutdown.c
@@ -6,7 +6,9 @@
 #include <xen/delay.h>
 #include <xen/shutdown.h>
 #include <xen/console.h>
+#ifdef CONFIG_KEXEC
 #include <xen/kexec.h>
+#endif
 #include <asm/debugger.h>
 #include <public/sched.h>
 
@@ -58,7 +60,9 @@ void dom0_shutdown(u8 reason)
     case SHUTDOWN_watchdog:
     {
         printk("Domain 0 shutdown: watchdog rebooting machine.\n");
+#ifdef CONFIG_KEXEC
         kexec_crash();
+#endif
         machine_restart(0);
         break; /* not reached */
     }