1 files changed, 2 insertions, 23 deletions
diff --git a/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.h b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.h
index 229ff6638..5c287b243 100644
--- a/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.h
+++ b/demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/arch/sys_arch.h
@@ -66,28 +66,7 @@ typedef int             sys_prot_t;
 #define SYS_THREAD_NULL (Thread *)0
 #define SYS_SEM_NULL    (Semaphore *)0
 
-void sys_init(void);
-sys_sem_t sys_sem_new(u8_t count);
-void sys_sem_free(sys_sem_t sem);
-void sys_sem_signal(sys_sem_t sem);
-u32_t sys_arch_sem_wait(sys_sem_t sem, u32_t timeout);
-
-sys_mbox_t sys_mbox_new(int size);
-void sys_mbox_free(sys_mbox_t mbox);
-void sys_mbox_post(sys_mbox_t mbox, void *msg);
-err_t sys_mbox_trypost(sys_mbox_t mbox, void *msg);
-u32_t sys_arch_mbox_fetch(sys_mbox_t mbox, void **msg, u32_t timeout);
-u32_t sys_arch_mbox_tryfetch(sys_mbox_t mbox, void **msg);
-
-struct sys_timeouts *sys_arch_timeouts(void);
-
-sys_thread_t sys_thread_new(char *name,
-                            void (* thread)(void *arg),
-                            void *arg,
-                            int stacksize,
-                            int prio);
-
-sys_prot_t sys_arch_protect(void);
-void sys_arch_unprotect(sys_prot_t pval);
+/* let sys.h use binary semaphores for mutexes */
+#define LWIP_COMPAT_MUTEX 1
 
 #endif /* __SYS_ARCH_H__ */