- single KERNEL_VERSION(a,b,c) macro in platform.h

- rename get_kernel_revision() to get_linux_version_code
from Robert P. J. Day

include/libbb.h

@@ -120,7 +120,7 @@ extern long bb_xgetlarg(const char *arg, int base, long lower, long upper);
 extern unsigned long bb_baud_to_value(speed_t speed);
 extern speed_t bb_value_to_baud(unsigned long value);
 
-extern int get_kernel_revision(void);
+extern int get_linux_version_code(void);
 
 extern int get_console_fd(void);
 extern struct mntent *find_mount_point(const char *name, const char *table);

include/platform.h

@@ -91,6 +91,13 @@
 # include <netinet/in.h>
 #endif
 
+/*----- Kernel versioning ------------------------------------*/
+#ifdef __linux__
+#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
+#else
+#error implement KERNEL_VERSION for your platform
+#endif
+
 /* ---- miscellaneous --------------------------------------- */
 /* NLS stuff */
 /* THIS SHOULD BE CLEANED OUT OF THE TREE ENTIRELY */