intensity's city

/etc/ld.so.conf 에다가 내가 사용하고자하는 ***.so.3등의 파일이 있는 곳을 등록시킨다

만일 내가 넣고자하는 곳이 /usr/local/lib 라면

 sudo vim /etc/ld.so.conf
이렇게 열어서


등록 시키고
include /usr/local/lib
~                           

요거 실행해주면
sudo /sbin/ldconfig

ok

제안서multi_term.hwp

arm-elf-gcc 는 크게 두가지 놈이 있는데,

그놈에서 만든 거랑 야가토에서 만든게,

야가토가 좀더 쉬워서 야가토로 하겠다

http://www.yagarto.de/

여기 들어가서

맥용 다운 받고

설치한다...;;

그냥 거의 압축 푸는 수준이다....;;;

필자는

/usr/local/yagarto에 설치했다..(그냥 압축 푼다와 동일하다)

그렇게 하고

패스 설정 하고....

.bash_profile 여기다가 패스 설정하면 된다.

위치는 아마 루트에 있을것이다.

패스 설정하는 법은 그냥 쓰면 된다


export PATH=/usr/local/yagarto:$PATH

그 파일이 없다면

그냥 admin 권한 있는 사용자 루트폴더에

.profile에다가 써넣어라

암튼 그렇게 하고

arm-elf-gcc --version 등의 명령어를 쳐서

arm-elf-gcc (GCC) 4.4.1
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

이런 비스무리한게 나오면 성공한거다..

여기서 힘난 당신 분명 컴파일을 해보고 싶을 꺼다

그래서 다음 과 같은 소스를 코딩한다음 됬는지를 확인하겠지
 
#include <stdio.h>

int main(){

    printf("Hello World!\n");
    return 0;
}

그렇게 하고
arm-elf-gcc -o hello.o hello.c

뭐 이렇게 쓰면

엄청난 안될것이다..

되면 다행이고

아마 다음과 같은 에러가 뜰텐데

/usr/local/yagarto-4.4.1/bin/../lib/gcc/arm-elf/4.4.1/../../../../arm-elf/lib/libc.a(lib_a-exit.o): In function `exit':
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdlib/../../../../../newlib-1.17.0/newlib/libc/stdlib/exit.c:65: undefined reference to `_exit'
/usr/local/yagarto-4.4.1/bin/../lib/gcc/arm-elf/4.4.1/../../../../arm-elf/lib/libc.a(lib_a-mallocr.o): In function `malloc_extend_top':
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdlib/../../../../../newlib-1.17.0/newlib/libc/stdlib/mallocr.c:2160: undefined reference to `_sbrk_r'
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdlib/../../../../../newlib-1.17.0/newlib/libc/stdlib/mallocr.c:2197: undefined reference to `_sbrk_r'
/usr/local/yagarto-4.4.1/bin/../lib/gcc/arm-elf/4.4.1/../../../../arm-elf/lib/libc.a(lib_a-freer.o): In function `_malloc_trim_r':
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdlib/../../../../../newlib-1.17.0/newlib/libc/stdlib/mallocr.c:3326: undefined reference to `_sbrk_r'
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdlib/../../../../../newlib-1.17.0/newlib/libc/stdlib/mallocr.c:3335: undefined reference to `_sbrk_r'
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdlib/../../../../../newlib-1.17.0/newlib/libc/stdlib/mallocr.c:3340: undefined reference to `_sbrk_r'
/usr/local/yagarto-4.4.1/bin/../lib/gcc/arm-elf/4.4.1/../../../../arm-elf/lib/libc.a(lib_a-makebuf.o): In function `__smakebuf_r':
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdio/../../../../../newlib-1.17.0/newlib/libc/stdio/makebuf.c:59: undefined reference to `_fstat_r'
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdio/../../../../../newlib-1.17.0/newlib/libc/stdio/makebuf.c:110: undefined reference to `_isatty_r'
/usr/local/yagarto-4.4.1/bin/../lib/gcc/arm-elf/4.4.1/../../../../arm-elf/lib/libc.a(lib_a-stdio.o): In function `__sclose':
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdio/../../../../../newlib-1.17.0/newlib/libc/stdio/stdio.c:124: undefined reference to `_close_r'
/usr/local/yagarto-4.4.1/bin/../lib/gcc/arm-elf/4.4.1/../../../../arm-elf/lib/libc.a(lib_a-stdio.o): In function `__sseek':
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdio/../../../../../newlib-1.17.0/newlib/libc/stdio/stdio.c:106: undefined reference to `_lseek_r'
/usr/local/yagarto-4.4.1/bin/../lib/gcc/arm-elf/4.4.1/../../../../arm-elf/lib/libc.a(lib_a-stdio.o): In function `__swrite':
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdio/../../../../../newlib-1.17.0/newlib/libc/stdio/stdio.c:78: undefined reference to `_lseek_r'
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdio/../../../../../newlib-1.17.0/newlib/libc/stdio/stdio.c:86: undefined reference to `_write_r'
/usr/local/yagarto-4.4.1/bin/../lib/gcc/arm-elf/4.4.1/../../../../arm-elf/lib/libc.a(lib_a-stdio.o): In function `__sread':
/Users/mfischer/Projekte/development/yagarto-build/newlib-build/arm-elf/newlib/libc/stdio/../../../../../newlib-1.17.0/newlib/libc/stdio/stdio.c:48: undefined reference to `_read_r'
collect2: ld returned 1 exit status


긴장하지마라.

당신은 잘못설치한게 아니다..

단지 저런 파일에 대한 링크 에러가 난것이다.

뭐 이런저런 과정을 격을 텐데....

Red Hat newlib C Library" documentation 이문서 공부하고 어쩌구 말이다

그런 과정은 싹 빼고 되는법을 알려주마

/****************************************************************************
*  Copyright (c) 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;
}
/****************************************************************************/

void _exit(int n)
{
    while(1);
}
/*** EOF ***/

여기까지 소스를 싹 복사해다가

라이브러리를 만들면 된다.

일단 확인하고 싶으면

이것을 syscall.c 등으로 저장한뒤에

arm-elf-gcc hello.c syscall.c -o hello.o

로 컴파일 해봐라.

아마 될것이다.

그리고 마지막으로

file hello.o

를 해봐서

hello.o: ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, not stripped


요런 비스무리한 것으로 뜨면 완전 성공이다..

자축하라

라이브러리 로 만드는건 다음 포스팅에서

다른데 있는거 글거다가 써보겠다.