conditionally disable pci if not supported

disable pci if not supported by host platform. When
libpci is not found, define a macro which will be
used for conditional compilation.

Signed-off-by: Rajagopal Venkat <rajagopal.venkat@linaro.org>

2 files changed, 23 insertions, 2 deletions

diff --git a/src/lib.cpp b/src/lib.cpp
index 0f87e48..77e49a2 100644
--- a/src/lib.cpp
+++ b/src/lib.cpp
@@ -35,11 +35,13 @@
 #include <math.h>
 #include <stdlib.h>
 
+#include "lib.h"
+
+#ifndef HAVE_NO_PCI
 extern "C" {
 #include <pci/pci.h>
 }
-
-#include "lib.h"
+#endif
 
 #include <stdio.h>
 #include <stdint.h>
@@ -266,6 +268,7 @@ void format_watts(double W, char *buffer, unsigned int len)
 }
 
 
+#ifndef HAVE_NO_PCI
 static struct pci_access *pci_access;
 
 char *pci_id_to_name(uint16_t vendor, uint16_t device, char *buffer, int len)
@@ -290,6 +293,19 @@ void end_pci_access(void)
 		pci_free_name_list(pci_access);
 }
 
+#else
+
+char *pci_id_to_name(uint16_t vendor, uint16_t device, char *buffer, int len)
+{
+	return NULL;
+}
+
+void end_pci_access(void)
+{
+}
+
+#endif /* HAVE_NO_PCI */
+
 int utf_ok = -1;
 
 
diff --git a/src/lib.h b/src/lib.h
index 588c023..7093b7f 100644
--- a/src/lib.h
+++ b/src/lib.h
@@ -30,6 +30,11 @@
 #endif
 #include <stdint.h>
 
+/* Include only for Automake builds */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #ifndef DISABLE_I18N
 #define _(STRING)    gettext(STRING)
 #else