adds missing symbols and sources for libwrap

bare-metal-bsp/libwrap/sys/close.c

@@ -2,8 +2,12 @@
 
 #include <errno.h>
 #include "stub.h"
+#include "weak_under_alias.h"
 
 int __wrap_close(int fd)
 {
   return _stub(EBADF);
 }
+
+weak_under_alias(close);
+

bare-metal-bsp/libwrap/sys/fstat.c

@@ -4,6 +4,7 @@
 #include <unistd.h>
 #include <sys/stat.h>
 #include "stub.h"
+#include "weak_under_alias.h"
 
 int __wrap_fstat(int fd, struct stat* st)
 {
@@ -14,3 +15,5 @@ int __wrap_fstat(int fd, struct stat* st)
 
   return _stub(EBADF);
 }
+
+weak_under_alias(fstat);

bare-metal-bsp/libwrap/sys/lseek.c

@@ -4,6 +4,7 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include "stub.h"
+#include "weak_under_alias.h"
 
 off_t __wrap_lseek(int fd, off_t ptr, int dir)
 {
@@ -12,3 +13,6 @@ off_t __wrap_lseek(int fd, off_t ptr, int dir)
 
   return _stub(EBADF);
 }
+
+weak_under_alias(lseek);
+

bare-metal-bsp/libwrap/sys/read.c

@@ -7,6 +7,7 @@
 
 #include "platform.h"
 #include "stub.h"
+#include "weak_under_alias.h"
 
 ssize_t __wrap_read(int fd, void* ptr, size_t len)
 {
@@ -28,3 +29,5 @@ ssize_t __wrap_read(int fd, void* ptr, size_t len)
 
   return _stub(EBADF);
 }
+weak_under_alias(read);
+

bare-metal-bsp/libwrap/sys/sbrk.c

@@ -1,6 +1,7 @@
 /* See LICENSE of license details. */
 
 #include <stddef.h>
+#include "weak_under_alias.h"
 
 void *__wrap_sbrk(ptrdiff_t incr)
 {
@@ -14,3 +15,5 @@ void *__wrap_sbrk(ptrdiff_t incr)
   curbrk += incr;
   return curbrk - incr;
 }
+
+weak_under_alias(sbrk);

bare-metal-bsp/libwrap/sys/write.c

@@ -7,6 +7,7 @@
 
 #include "platform.h"
 #include "stub.h"
+#include "weak_under_alias.h"
 
 ssize_t __wrap_write(int fd, const void* ptr, size_t len)
 {
@@ -27,3 +28,4 @@ ssize_t __wrap_write(int fd, const void* ptr, size_t len)
 
   return _stub(EBADF);
 }
+weak_under_alias(write);