customize linker script fail when use gold linker

陈云星 chen.yunxing@me.com
Fri May 14 03:29:22 GMT 2021


Hi, folks:

I’m migrating from bfd linker to gold linker.

And my project has custom linker script:

====================================
SECTIONS
{
  memory_context_static_id :
  {
    KEEP(*(SORT(memory_context_static_id*)));
  }
  co_buffer :
  {
    KEEP(*(*CO_BUFFER_BEGIN*))
    KEEP(*(*COBUFFER*))
    KEEP(*(*CO_BUFFER_END*))
  }
  co_hook :
  {
    KEEP(*(*CO_HOOK_BEGIN*))
    KEEP(*(*COHOOK*))
    KEEP(*(*CO_HOOK_END*))
  }
}
INSERT AFTER .text;
====================================

when I migrate to gold linker, it failed with gold don’t recognize ‘INSERT’;

After some google search, this failed means gold linker  has no default script;

Then I try to dump the default script by : ld —verbose; and put above custom script in the dumped;

which also failed with error:

/usr/bin/ld.gold: error: /data/1/3_2_x_opt-gcc93/rpm/gold.lds:51:22: syntax error, unexpected '('                                        
/usr/bin/ld.gold: fatal error: unable to parse script file /data/1/3_2_x_opt-gcc93/rpm/gold.lds 

It seems the linker script can’t been correctly parsed by gold.

So, how can I do ?

Thanks your help :)

=====================================================
/* Script for -z combreloc: combine and sort reloc sections */
/* Copyright (C) 2014-2016 Free Software Foundation, Inc.
   Copying and distribution of this script, with or without modification,
   are permitted in any medium without royalty provided the copyright
   notice and this notice are preserved.  */
OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64",
	      "elf64-x86-64")
OUTPUT_ARCH(i386:x86-64)
ENTRY(_start)
SEARCH_DIR("=/usr/x86_64-redhat-linux/lib64"); SEARCH_DIR("=/usr/lib64"); SEARCH_DIR("=/usr/local/lib64"); SEARCH_DIR("=/lib64"); SEARCH_DIR("=/usr/x86_64-redhat-linux/lib"); SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR("=/lib"); SEARCH_DIR("=/usr/lib");
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    KEEP (*(SORT(.ctors.*)))
    KEEP (*(.ctors))
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  {
    KEEP (*crtbegin.o(.dtors))
    KEEP (*crtbegin?.o(.dtors))
    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
    KEEP (*(SORT(.dtors.*)))
    KEEP (*(.dtors))
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}
======================================================


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