diff --git a/lib/bsp/standalone/src/changelog.txt b/lib/bsp/standalone/src/changelog.txt
index b903159a..27e57d3b 100755
--- a/lib/bsp/standalone/src/changelog.txt
+++ b/lib/bsp/standalone/src/changelog.txt
@@ -182,5 +182,6 @@
  *		       cortexa9/xil_exception.c to fix CR#802862.
  * 4.2 pkp   06/30/14  MakeFile for cortexa9/armcc has been changed to fixes the 
  *		       issue of improper linking of translation_table.s 
- *		       
+ * 4.2 pkp   07/04/14  added weak attribute for the function in BSP which are also present
+ *		       in tool chain to avoid conflicts into some special cases
  *****************************************************************************************/
diff --git a/lib/bsp/standalone/src/cortexa9/armcc/_sys_close.c b/lib/bsp/standalone/src/cortexa9/armcc/_sys_close.c
index c83077d9..975aedf5 100755
--- a/lib/bsp/standalone/src/cortexa9/armcc/_sys_close.c
+++ b/lib/bsp/standalone/src/cortexa9/armcc/_sys_close.c
@@ -1,6 +1,6 @@
 
 // Stuv for close() sys-call
-int $Sub$$_sys_close(int fh)
+__weak int _sys_close(int fh)
 {
    return -1;
 }
diff --git a/lib/bsp/standalone/src/cortexa9/armcc/_sys_exit.c b/lib/bsp/standalone/src/cortexa9/armcc/_sys_exit.c
index 7fe24f34..b1235b81 100755
--- a/lib/bsp/standalone/src/cortexa9/armcc/_sys_exit.c
+++ b/lib/bsp/standalone/src/cortexa9/armcc/_sys_exit.c
@@ -1,6 +1,6 @@
 
 // Stuv for exit() sys-call
-void $Sub$$_sys_exit(int rc)
+__weak void _sys_exit(int rc)
 {
    while(1);
 }
diff --git a/lib/bsp/standalone/src/cortexa9/armcc/_sys_iserror.c b/lib/bsp/standalone/src/cortexa9/armcc/_sys_iserror.c
index a093cd05..c6fbb978 100755
--- a/lib/bsp/standalone/src/cortexa9/armcc/_sys_iserror.c
+++ b/lib/bsp/standalone/src/cortexa9/armcc/_sys_iserror.c
@@ -1,6 +1,6 @@
 
 // Stub for iserror() function
-int $Sub$$_sys_iserror(int status)
+__weak int _sys_iserror(int status)
 {
    if(status<0)
       return 1;
diff --git a/lib/bsp/standalone/src/cortexa9/armcc/_sys_istty.c b/lib/bsp/standalone/src/cortexa9/armcc/_sys_istty.c
index c48f2c2d..e2fa4834 100755
--- a/lib/bsp/standalone/src/cortexa9/armcc/_sys_istty.c
+++ b/lib/bsp/standalone/src/cortexa9/armcc/_sys_istty.c
@@ -1,6 +1,6 @@
 
 // Stub for istty sys-call
-int $Sub$$_sys_istty(unsigned int* f)
+__weak int _sys_istty(unsigned int* f)
 { 
    /* cannot read/write files */
    return 1;
diff --git a/lib/bsp/standalone/src/cortexa9/armcc/_sys_open.c b/lib/bsp/standalone/src/cortexa9/armcc/_sys_open.c
index 47cb8bc7..9845f1aa 100755
--- a/lib/bsp/standalone/src/cortexa9/armcc/_sys_open.c
+++ b/lib/bsp/standalone/src/cortexa9/armcc/_sys_open.c
@@ -1,6 +1,6 @@
 
 // Stub for open sys-call
-int $Sub$$_sys_open(const char* name, int openmode)
+__weak int _sys_open(const char* name, int openmode)
 {
    return 0;
 }
diff --git a/lib/bsp/standalone/src/cortexa9/armcc/_sys_read.c b/lib/bsp/standalone/src/cortexa9/armcc/_sys_read.c
index f328ef71..c1a5292e 100755
--- a/lib/bsp/standalone/src/cortexa9/armcc/_sys_read.c
+++ b/lib/bsp/standalone/src/cortexa9/armcc/_sys_read.c
@@ -1,6 +1,6 @@
 
 // Stub for read() sys-call
-int $Sub$$_sys_read(unsigned int fh, unsigned char *buf, unsigned int len, int mode)
+__weak int _sys_read(unsigned int fh, unsigned char *buf, unsigned int len, int mode)
 {
    // Return the number of character NOT read
    return len;
diff --git a/lib/bsp/standalone/src/cortexa9/armcc/_sys_write.c b/lib/bsp/standalone/src/cortexa9/armcc/_sys_write.c
index 456c6bf0..33e28622 100755
--- a/lib/bsp/standalone/src/cortexa9/armcc/_sys_write.c
+++ b/lib/bsp/standalone/src/cortexa9/armcc/_sys_write.c
@@ -1,6 +1,6 @@
 #include "xparameters.h"
 
-int $Sub$$_sys_write(unsigned int fh, const unsigned char *buf, unsigned int len, int mode)
+__weak int _sys_write(unsigned int fh, const unsigned char *buf, unsigned int len, int mode)
 {
 #ifdef STDOUT_BASEADDRESS
   unsigned int volatile *uart_base = (unsigned int *)STDOUT_BASEADDRESS;
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/_exit.c b/lib/bsp/standalone/src/cortexa9/gcc/_exit.c
index 3619493f..8f75400b 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/_exit.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/_exit.c
@@ -34,7 +34,7 @@
 
 /* _exit - Simple implementation. Does not return.
 */
-void _exit (int status)
+__attribute__((weak)) void _exit (int status)
 {
   (void)status;
   while (1);
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/_open.c b/lib/bsp/standalone/src/cortexa9/gcc/_open.c
index 9f187adb..1006ce55 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/_open.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/_open.c
@@ -34,7 +34,7 @@
 
 #ifdef __cplusplus
 extern "C" {
-	int _open(const char *buf, int flags, int mode);
+	__attribute__((weak)) int _open(const char *buf, int flags, int mode);
 }
 #endif
 
@@ -42,7 +42,7 @@ extern "C" {
  * _open -- open a file descriptor. We don't have a filesystem, so
  *         we return an error.
  */
-int _open(const char *buf, int flags, int mode)
+__attribute__((weak)) int _open(const char *buf, int flags, int mode)
 {
   (void)buf;
   (void)flags;
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/_sbrk.c b/lib/bsp/standalone/src/cortexa9/gcc/_sbrk.c
index ecf8ca96..4a08ee7c 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/_sbrk.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/_sbrk.c
@@ -37,11 +37,11 @@ extern int _heap_end;
 
 #ifdef __cplusplus
 extern "C" {
-	caddr_t _sbrk ( int incr );
+	__attribute__((weak)) caddr_t _sbrk ( int incr );
 }
 #endif
 
-caddr_t _sbrk ( int incr )
+__attribute__((weak)) caddr_t _sbrk ( int incr )
 {
   static unsigned char *heap = NULL;
   unsigned char *prev_heap;
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/abort.c b/lib/bsp/standalone/src/cortexa9/gcc/abort.c
index 1d3f4199..377a5a85 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/abort.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/abort.c
@@ -36,7 +36,7 @@
 /*
  * abort -- go out via exit...
  */
-void abort(void)
+__attribute__((weak)) void abort(void)
 {
   _exit(1);
 }
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/close.c b/lib/bsp/standalone/src/cortexa9/gcc/close.c
index 83606b9d..f18b9cdb 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/close.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/close.c
@@ -31,7 +31,7 @@
 ******************************************************************************/
 #ifdef __cplusplus
 extern "C" {
-	int _close(int fd);
+	__attribute__((weak)) int _close(int fd);
 }
 #endif
 
@@ -39,7 +39,7 @@ extern "C" {
  * close -- We don't need to do anything, but pretend we did.
  */
 
-int _close(int fd)
+__attribute__((weak)) int _close(int fd)
 {
   (void)fd;
   return (0);
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/errno.c b/lib/bsp/standalone/src/cortexa9/gcc/errno.c
index e7cedeed..4cd96711 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/errno.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/errno.c
@@ -39,11 +39,11 @@
 
 #ifdef __cplusplus
 extern "C" {
-	int * __errno ();
+	__attribute__((weak)) int * __errno ();
 }
 #endif
 
-int *
+__attribute__((weak)) int *
 __errno ()
 {
   return &_REENT->_errno;
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/fcntl.c b/lib/bsp/standalone/src/cortexa9/gcc/fcntl.c
index 2f072fac..24d8acad 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/fcntl.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/fcntl.c
@@ -36,7 +36,7 @@
  * fcntl -- Manipulate a file descriptor.
  *          We don't have a filesystem, so we do nothing.
  */
-int fcntl (int fd, int cmd, long arg)
+__attribute__((weak)) int fcntl (int fd, int cmd, long arg)
 {
   (void)fd;
   (void)cmd;
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/fstat.c b/lib/bsp/standalone/src/cortexa9/gcc/fstat.c
index 76c658c7..a9abef9c 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/fstat.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/fstat.c
@@ -34,13 +34,13 @@
 
 #ifdef __cplusplus
 extern "C" {
-	int _fstat(int fd, struct stat *buf);
+	__attribute__((weak)) int _fstat(int fd, struct stat *buf);
 }
 #endif
 /*
  * fstat -- Since we have no file system, we just return an error.
  */
-int _fstat(int fd, struct stat *buf)
+__attribute__((weak)) int _fstat(int fd, struct stat *buf)
 {
   (void)fd;
   buf->st_mode = S_IFCHR; /* Always pretend to be a tty */
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/getpid.c b/lib/bsp/standalone/src/cortexa9/gcc/getpid.c
index eb126695..64dd40b5 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/getpid.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/getpid.c
@@ -35,16 +35,16 @@
  */
 #ifdef __cplusplus
 extern "C" {
-	int _getpid();
+	__attribute__((weak)) int _getpid();
 }
 #endif
 
-int getpid()
+__attribute__((weak)) int getpid()
 {
   return 1;
 }
 
-int _getpid()
+__attribute__((weak)) int _getpid()
 {
   return 1;
 }
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/isatty.c b/lib/bsp/standalone/src/cortexa9/gcc/isatty.c
index 5c9a805c..5eaf71fa 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/isatty.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/isatty.c
@@ -33,7 +33,7 @@
 
 #ifdef __cplusplus
 extern "C" {
-	int _isatty(int fd);
+	__attribute__((weak)) int _isatty(int fd);
 }
 #endif
 
@@ -42,13 +42,13 @@ extern "C" {
  *           returns 0 if not. Since we're hooked up to a
  *           serial port, we'll say yes _AND return a 1.
  */
-int isatty(int fd)
+__attribute__((weak)) int isatty(int fd)
 {
   (void)fd;
   return (1);
 }
 
-int _isatty(int fd)
+__attribute__((weak)) int _isatty(int fd)
 {
   (void)fd;
   return (1);
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/kill.c b/lib/bsp/standalone/src/cortexa9/gcc/kill.c
index 61103d21..9000019a 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/kill.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/kill.c
@@ -34,7 +34,7 @@
 
 #ifdef __cplusplus
 extern "C" {
-	int _kill(int pid, int sig);
+	__attribute__((weak)) int _kill(int pid, int sig);
 }
 #endif
 
@@ -42,14 +42,14 @@ extern "C" {
  * kill -- go out via exit...
  */
 
-int kill(int pid, int sig)
+__attribute__((weak)) int kill(int pid, int sig)
 {
   if(pid == 1)
     _exit(sig);
   return 0;
 }
 
-int _kill(int pid, int sig)
+__attribute__((weak)) int _kill(int pid, int sig)
 {
   if(pid == 1)
     _exit(sig);
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/lseek.c b/lib/bsp/standalone/src/cortexa9/gcc/lseek.c
index 2a5deb29..c90c84df 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/lseek.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/lseek.c
@@ -35,13 +35,13 @@
 
 #ifdef __cplusplus
 extern "C" {
-	off_t _lseek(int fd, off_t offset, int whence);
+	__attribute__((weak)) off_t _lseek(int fd, off_t offset, int whence);
 }
 #endif
 /*
  * lseek --  Since a serial port is non-seekable, we return an error.
  */
-off_t lseek(int fd, off_t offset, int whence)
+__attribute__((weak)) off_t lseek(int fd, off_t offset, int whence)
 {
   (void)fd;
   (void)offset;
@@ -50,7 +50,7 @@ off_t lseek(int fd, off_t offset, int whence)
   return ((off_t)-1);
 }
 
-off_t _lseek(int fd, off_t offset, int whence)
+__attribute__((weak)) off_t _lseek(int fd, off_t offset, int whence)
 {
   (void)fd;
   (void)offset;
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/open.c b/lib/bsp/standalone/src/cortexa9/gcc/open.c
index 75ca7b4a..224968d6 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/open.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/open.c
@@ -34,14 +34,14 @@
 
 #ifdef __cplusplus
 extern "C" {
-	int open(const char *buf, int flags, int mode);
+	__attribute__((weak)) int open(const char *buf, int flags, int mode);
 }
 #endif
 /*
  * open -- open a file descriptor. We don't have a filesystem, so
  *         we return an error.
  */
-int open(const char *buf, int flags, int mode)
+__attribute__((weak)) int open(const char *buf, int flags, int mode)
 {
   (void)buf;
   (void)flags;
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/read.c b/lib/bsp/standalone/src/cortexa9/gcc/read.c
index 70fba199..d4eae693 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/read.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/read.c
@@ -38,7 +38,7 @@
 
 #ifdef __cplusplus
 extern "C" {
-	int _read (int fd, char* buf, int nbytes);
+	__attribute__((weak)) int _read (int fd, char* buf, int nbytes);
 }
 #endif
 
@@ -46,7 +46,7 @@ extern "C" {
  * read  -- read bytes from the serial port. Ignore fd, since
  *          we only have stdin.
  */
-int
+__attribute__((weak)) int
 read (int fd, char* buf, int nbytes)
 {
 #ifdef STDIN_BASEADDRESS
@@ -71,7 +71,7 @@ read (int fd, char* buf, int nbytes)
 #endif
 }
 
-int
+__attribute__((weak)) int
 _read (int fd, char* buf, int nbytes)
 {
 #ifdef STDIN_BASEADDRESS
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/sbrk.c b/lib/bsp/standalone/src/cortexa9/gcc/sbrk.c
index 920a8177..7193d589 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/sbrk.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/sbrk.c
@@ -33,7 +33,7 @@
 #include <errno.h>
 #ifdef __cplusplus
 extern "C" {
-	char *sbrk (int nbytes);
+	__attribute__((weak)) char *sbrk (int nbytes);
 }
 #endif
 
@@ -44,7 +44,7 @@ extern char HeapLimit[];
 
 static char *heap_ptr;
 
-char *sbrk (int nbytes)
+__attribute__((weak)) char *sbrk (int nbytes)
 {
   char *base;
 
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/unlink.c b/lib/bsp/standalone/src/cortexa9/gcc/unlink.c
index c2963646..ab3db626 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/unlink.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/unlink.c
@@ -34,14 +34,14 @@
 
 #ifdef __cplusplus
 extern "C" {
-	int unlink(char *path);
+	__attribute__((weak)) int unlink(char *path);
 }
 #endif
 /*
  * unlink -- since we have no file system,
  *           we just return an error.
  */
-int unlink(char *path)
+__attribute__((weak)) int unlink(char *path)
 {
   (void)path;
   errno = EIO;
diff --git a/lib/bsp/standalone/src/cortexa9/gcc/write.c b/lib/bsp/standalone/src/cortexa9/gcc/write.c
index 7885f9d2..3da52c43 100755
--- a/lib/bsp/standalone/src/cortexa9/gcc/write.c
+++ b/lib/bsp/standalone/src/cortexa9/gcc/write.c
@@ -38,7 +38,7 @@
 
 #ifdef __cplusplus
 extern "C" {
-	int _write (int fd, char* buf, int nbytes);
+	__attribute__((weak)) int _write (int fd, char* buf, int nbytes);
 }
 #endif
 
@@ -47,7 +47,7 @@ extern "C" {
  *          stdout and stderr are the same. Since we have no filesystem,
  *          open will only return an error.
  */
-int
+__attribute__((weak)) int
 write (int fd, char* buf, int nbytes)
 
 {
@@ -70,7 +70,7 @@ write (int fd, char* buf, int nbytes)
 #endif
 }
 
-int
+__attribute__((weak)) int
 _write (int fd, char* buf, int nbytes)
 {
 #ifdef STDOUT_BASEADDRESS