Soc/evalsoc: workaround for hightec c lib errno type error

Signed-off-by: Huaqi Fang <[email protected]>

SoC/evalsoc/Common/Source/Stubs/newlib/stubs.c

@@ -11,7 +11,10 @@
 #include <nuclei_sdk_hal.h>
 
 #undef errno
-extern int errno;
+#ifndef NEWLIB_THREAD_LOCAL_ERRNO
+#define NEWLIB_THREAD_LOCAL_ERRNO
+#endif
+extern NEWLIB_THREAD_LOCAL_ERRNO int errno;
 
 /* Key stub function for uart io via printf/scanf and heap management */
 #undef putchar
@@ -87,7 +90,7 @@ __WEAK void* _sbrk(ptrdiff_t incr)
 
 /* Other newlib stub functions, see https://sourceware.org/newlib/libc.html#Stubs */
 
-int errno;
+NEWLIB_THREAD_LOCAL_ERRNO int errno;
 __WEAK void* __dso_handle = NULL;
 /* version of environ for no OS. */
 char *__env[1] = { 0 };