Changeset 3802 for trunk

Timestamp:

Feb 5, 2014, 7:46:01 PM (12 years ago)

Author:

bird

Message:

sys/sysctl.h: Try convince gcc to not remove the static sysctl data referenced by the set vector.

File:

• trunk/libc/include/sys/sysctl.h (modified) (1 diff)

trunk/libc/include/sys/sysctl.h

@@ -217 +217 @@
 #define DATA_SET(set, data) __asm__ (".stabs \"___libc_" #set "__\", 25, 0, 0, _" #data)
 
+#if __GNUC_PREREQ__(4,2)
+# define SYSCTL_DATA_USED() __attribute__((__used__))
+#else
+# define SYSCTL_DATA_USED()
+#endif
+
 /* This constructs a "raw" MIB oid. */
 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
-        static struct sysctl_oid __libc_sysctl__##parent##_##name = {            \
+        static struct sysctl_oid SYSCTL_DATA_USED() __libc_sysctl__##parent##_##name = { \
                 &__libc_sysctl_##parent##_children, { &__libc_sysctl__##parent##_##name },                       \
                 nbr, kind, a1, a2, #name, handler, fmt, 0, descr };      \