Solved compile problems for g++ programs linked to libsensors

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@722 7894878c-1315-0410-8ee3-d5d059ff63e0

TODO

@@ -8,6 +8,7 @@ I2C CODE CHANGES
 KERNEL MODULES
 ==============
 
+* Add string function in sensors.o
 * ALL: cleanup_module is void; check also that cleaning up is done
   properly, now we know that the module will be unloaded whatever we
   do.

lib/error.h

@@ -29,6 +29,11 @@
 #define SENSORS_ERR_BUS_NAME 7  /* Can't parse bus name */
 #define SENSORS_ERR_PARSE 8     /* General parse error */
 
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
 /* This function returns a pointer to a string which describes the error.
    errnum may be negative (the corresponding positive error is returned).
    You may not modify the result! */
@@ -46,5 +51,8 @@ extern void (*sensors_parse_error) (const char *err, int lineno);
    the program). Never let it return! */
 extern void (*sensors_fatal_error) (const char *proc, const char *err);
 
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
 
 #endif /* def LIB_SENSORS_ERROR_H */

lib/sensors.h

@@ -30,6 +30,10 @@
 #define SENSORS_CHIP_NAME_BUS_ANY_I2C -3
 #define SENSORS_CHIP_NAME_ADDR_ANY -1
 
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
 /* A chip name is encoded is in this structure */
 typedef struct sensors_chip_name {
   char *prefix;
@@ -137,4 +141,8 @@ typedef struct sensors_feature_data {
 extern const sensors_feature_data *sensors_get_all_features 
              (sensors_chip_name name, int *nr1,int *nr2);
 
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
 #endif /* def LIB_SENSORS_ERROR_H */