warning: sh_link not set for section .ARM.exidx ON binutils 2.19.50.20081014

["Rob Emanuele" <poorarm at shoreis dot com>]

Greetings,

I'm trying to build a bare metal image for arm-eabi.  When using the
arm-eabi-g++ compiler (4.3.2) and getting linking with libstdc++ and
newlib I end up with the warning:

sh_link not set for section .ARM.exidx

I've had this working without the warning and functioning properly
with OABI but not EABI.  I think my ld script is correct but I'll list
it below.  This does not happen if I'm just compiling C code.

Thanks for any help,

Rob



/********* ld script ************/


__Stack_Size = 1024 ;

PROVIDE ( _Stack_Size = __Stack_Size ) ;

__Stack_Init = _estack  - __Stack_Size ;

/*"PROVIDE" allows to easily override these values from an object file
or the commmand line.*/
PROVIDE ( _Stack_Init = __Stack_Init ) ;

/*
There will be a link error if there is not this amount of RAM free at the end.
*/
_Minimum_Stack_Size = 0x100 ;


/* include the memory spaces definitions sub-script */
/*
Linker subscript for STM32F10x definitions with 512K Flash and 64K RAM */

/* Memory Spaces Definitions */

MEMORY
{
  RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 64K
  EXTSRAM (xrw) : ORIGIN = 0x68000000, LENGTH = 8192K
  FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 512K
  FLASHB1 (rx) : ORIGIN = 0x00000000, LENGTH = 0
  EXTMEMB0 (rx) : ORIGIN = 0x00000000, LENGTH = 0
  EXTMEMB1 (rx) : ORIGIN = 0x00000000, LENGTH = 0
  EXTMEMB2 (rx) : ORIGIN = 0x00000000, LENGTH = 0
  EXTMEMB3 (rx) : ORIGIN = 0x00000000, LENGTH = 0
}

/* higher address of the user mode stack */
_estack = 0x20010000;



/* include the sections management sub-script for FLASH mode */

/* Sections Definitions */

SECTIONS
{
    /* for Cortex devices, the beginning of the startup code is stored
in the .isr_vector section, which goes to FLASH */
    .isr_vector :
    {
	. = ALIGN(4);
        KEEP(*(.isr_vector))            /* Startup code */
	. = ALIGN(4);
    } >FLASH

    /* for some STRx devices, the beginning of the startup code is
stored in the .flashtext section, which goes to FLASH */
    .flashtext :
    {
	. = ALIGN(4);
        *(.flashtext)            /* Startup code */
	. = ALIGN(4);
    } >FLASH


    /* the program code is stored in the .text section, which goes to Flash */
    .text :
    {
	    . = ALIGN(4);
	
        *(.text)                   /* remaining code */
        *(.text.*)                   /* remaining code */
        *(.rodata)                 /* read-only data (constants) */
        *(.rodata*)
        *(.glue_7)
        *(.glue_7t)

    } >FLASH

    /* for exception handling/unwind - some Newlib functions (in
common with C++ and STDC++) use this. */

    .ARM.extab :
    {
        *(.ARM.extab* .gnu.linkonce.armextab.*)

    } > FLASH

    .ARM.exidx :
    {
        __exidx_start = .;
        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
        __exidx_end = .;
    } > FLASH


    . = ALIGN(4);
     _etext = .;
    /* This is used by the startup in order to initialize the .data secion */
    _sidata = _etext;


    /* This is the initialized data section
    The program executes knowing that the data is in the RAM
    but the loader puts the initial values in the FLASH (inidata).
    It is one task of the startup to copy the initial values from
FLASH to RAM. */
    .data  : AT ( _sidata )
    {
	    . = ALIGN(4);
        /* This is used by the startup in order to initialize the
.data secion */
        _sdata = . ;

        *(.data)
        *(.data.*)

	    . = ALIGN(4);
	    /* This is used by the startup in order to initialize the .data secion */
   	 _edata = . ;
    } >EXTSRAM



    /* This is the uninitialized data section */
    .bss :
    {
	    . = ALIGN(4);
        /* This is used by the startup in order to initialize the .bss secion */
        _sbss = .;

        *(.bss)
        *(COMMON)

	    . = ALIGN(4);
	    /* This is used by the startup in order to initialize the .bss secion */
   	 _ebss = . ;
    } >EXTSRAM

    PROVIDE ( end = _ebss );
    PROVIDE ( _end = _ebss );

    /* This is the user stack section
    This is just to check that there is enough RAM left for the User mode stack
    It should generate an error if it's full.
     */
    ._usrstack :
    {
	    . = ALIGN(4);
        _susrstack = . ;

        . = . + _Minimum_Stack_Size ;

	    . = ALIGN(4);
        _eusrstack = . ;
    } >RAM



    /* this is the FLASH Bank1 */
    /* the C or assembly source must explicitly place the code or data there
    using the "section" attribute */
    .b1text :
    {
        *(.b1text)                   /* remaining code */
        *(.b1rodata)                 /* read-only data (constants) */
        *(.b1rodata*)
    } >FLASHB1

    /* this is the EXTMEM */
    /* the C or assembly source must explicitly place the code or data there
    using the "section" attribute */

    /* EXTMEM Bank0 */
    .eb0text :
    {
        *(.eb0text)                   /* remaining code */
        *(.eb0rodata)                 /* read-only data (constants) */
        *(.eb0rodata*)
    } >EXTMEMB0

    /* EXTMEM Bank1 */
    .eb1text :
    {
        *(.eb1text)                   /* remaining code */
        *(.eb1rodata)                 /* read-only data (constants) */
        *(.eb1rodata*)
    } >EXTMEMB1

    /* EXTMEM Bank2 */
    .eb2text :
    {
        *(.eb2text)                   /* remaining code */
        *(.eb2rodata)                 /* read-only data (constants) */
        *(.eb2rodata*)
    } >EXTMEMB2

    /* EXTMEM Bank0 */
    .eb3text :
    {
        *(.eb3text)                   /* remaining code */
        *(.eb3rodata)                 /* read-only data (constants) */
        *(.eb3rodata*)
    } >EXTMEMB3

}