функция sprintf() и компилятор arm-none-eabi-gcc, не компилирует... вылетает ошибка... Опции

[Посторонним В...]

In function `_sbrk_r': sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk' collect2.exe: error: ld returned 1 exit status

поиск по гуглю показал что при компиляции надо указать какой то ключ то ли написать свои функции `_sbrk_r' и еще там парочка... и править ld файл
скомпилить функцию под gcc для msp430 - все скомпилилось отлично

кто то решал такую проблему???

где копать код???

[AHTOXA]

Вот тут решение.

[Посторонним В...]

Вот тут решение.

а printf() заработает или примитивы допиливать надо???

[AHTOXA]

Надо определить функцию putChar(). (См. ф-ю _write())

[Посторонним В...]

Надо определить функцию putChar(). (См. ф-ю _write())

другая ошибка выскочила....


In function `_sbrk':
./src/stf_syscalls_minimal.c:114: undefined reference to `_heap'
./src/stf_syscalls_minimal.c:114: undefined reference to `_heap'
makefile:383: recipe for target `bin/charger_test.elf' failed
./src/stf_syscalls_minimal.c:124: undefined reference to `_eheap'
./src/stf_syscalls_minimal.c:124: undefined reference to `_eheap'
collect2.exe: error: ld returned 1 exit status
make: *** [bin/charger_test.elf] Error 1

[AHTOXA]

_heap и _eheap должны быть определены в скрипте линкера.
Можете посмотреть пример в скриптах для scmRTOS.
Или вот я выкладывал тестовые проекты:

• с printf
• с printf и new

[Посторонним В...]

нашел другую немного реализацию syscalls.c :

с ним проект без правки ld файла компилица но нет возможности проверить работает или нет...

/****************************************************************************
* Copyright © 2009 by Michael Fischer. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
****************************************************************************
* History:
*
* 28.03.09 mifi First Version, based on the original syscall.c from
* newlib version 1.17.0
****************************************************************************/

#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>

//------------------------------------------------------------------------------

int _read_r (struct _reent *r, int file, char * ptr, int len)
{
r = r;
file = file;
ptr = ptr;
len = len;

errno = EINVAL;

return (-1);
}

//------------------------------------------------------------------------------

int _lseek_r (struct _reent *r, int file, int ptr, int dir)
{
r = r;
file = file;
ptr = ptr;
dir = dir;

return (0);
}

//------------------------------------------------------------------------------

int _write_r (struct _reent *r, int file, char * ptr, int len)
{
r = r;
file = file;
ptr = ptr;

#if 0

int index;

/* For example, output string by UART */
for (index=0; index<len; index++)
{
if (ptr[index] == '\n')
{
uart_putc('\r');
}

uart_putc(ptr[index]);
}

#endif

return (len);
}

//------------------------------------------------------------------------------

int _close_r (struct _reent *r, int file)
{
return (0);
}

//------------------------------------------------------------------------------

/* Register name faking - works in collusion with the linker. */
register char *stack_ptr asm ("sp");

caddr_t _sbrk_r (struct _reent *r, int incr)
{
extern char end asm ("end"); /* Defined by the linker. */
static char *heap_end;
char *prev_heap_end;

if (heap_end == NULL) heap_end = &end;

prev_heap_end = heap_end;

if (heap_end + incr > stack_ptr)
{
/* Some of the libstdc++-v3 tests rely upon detecting out of memory errors, so do not abort here. */
#if 0

extern void abort (void);

_write (1, "_sbrk: Heap and stack collision\n", 32);

abort ();

#else

errno = ENOMEM;

return ((caddr_t)(-1));

#endif

}

heap_end += incr;

return ((caddr_t)(prev_heap_end));
}

//------------------------------------------------------------------------------

int _fstat_r (struct _reent *r, int file, struct stat *st)
{
r = r;
file = file;

memset (st, 0, sizeof (*st));

st->st_mode = S_IFCHR;

return (0);
}

//------------------------------------------------------------------------------

int _isatty_r(struct _reent *r, int fd)
{
r = r;
fd = fd;

return (1);
}

//------------------------------------------------------------------------------
// added
//------------------------------------------------------------------------------

int _getpid ()
{
return (1);
}

//------------------------------------------------------------------------------

void _exit (int i)
{
// printf("Program exit with code %d", i);

i = i;

while (1);
}

//------------------------------------------------------------------------------

int _kill (int pid, int sig)
{
(void)pid;
(void)sig;

errno = EINVAL;

return (-1);
}

//------------------------------------------------------------------------------