compat: SYM_FUNC_* was backported to c8s

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

Author: zx2c4

src/compat/compat-asm.h

@@ -10,6 +10,17 @@
 #include <linux/kconfig.h>
 #include <linux/version.h>
 
+#ifdef RHEL_MAJOR
+#if RHEL_MAJOR == 7
+#define ISRHEL7
+#elif RHEL_MAJOR == 8
+#define ISRHEL8
+#if RHEL_MINOR == 4
+#define ISCENTOS8S
+#endif
+#endif
+#endif
+
 /* PaX compatibility */
 #if defined(RAP_PLUGIN)
 #undef ENTRY
@@ -40,7 +51,7 @@
 #undef pull
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 76)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 76) && !defined(ISCENTOS8S)
 #define SYM_FUNC_START ENTRY
 #define SYM_FUNC_END ENDPROC
 #endif