lwip: provide a sntp_format_time() function

Provide a trivial implementation of sntp_format_time() to fix a build
error when CONFIG_LWIP_DEBUG=y:

lib/lwip/lwip/src/apps/sntp/sntp.c: In function ‘sntp_format_time’:
lib/lwip/lwip/src/apps/sntp/sntp.c:283:10: error: implicit declaration of function ‘ctime’ [-Werror=implicit-function-declaration]
  283 |   return ctime(&ut);
      |          ^~~~~

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>

diff --git a/lib/lwip/u-boot/arch/cc.h b/lib/lwip/u-boot/arch/cc.h
index f91127ac56581204bed49b4c04e3951e8ffa79c3..04ab94d6b700a9c9819a18f3be91ec39eb5f0974 100644 (file)
--- a/lib/lwip/u-boot/arch/cc.h
+++ b/lib/lwip/u-boot/arch/cc.h
@@ -47,4 +47,13 @@
 void sntp_set_system_time(uint32_t sec);
 #define SNTP_SET_SYSTEM_TIME(sec) sntp_set_system_time(sec)
 
+static inline const char *sntp_format_time(time_t t)
+{
+       static char buf[29]; /* "(time_t)" + 20 digits max + \0 */
+
+       snprintf(buf, sizeof(buf), "(time_t)%llu", t);
+       return buf;
+}
+
+#define sntp_format_time sntp_format_time
 #endif /* LWIP_ARCH_CC_H */