[Bug gold/20693] kernel build error on ppc64le

[markus at trippelsdorf dot de]

https://sourceware.org/bugzilla/show_bug.cgi?id=20693

--- Comment #4 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
Here is an example:
address@hidden linux % objdump -h lib/lib.a | sed -ne
'/___ksymtab/{s/.*+/EXTERN(/;s/ .*/)/;p}' >|lib/.lib-ksyms.o.lds
address@hidden linux % cat lib/.lib-ksyms.o.lds
EXTERN(argv_free)
EXTERN(argv_split)
... <The actual list goes on>
address@hidden linux % ar rcsD lib/.lib_exports.o
address@hidden linux % ld.bfd -r -o lib/lib-ksyms.o -T
lib/.lib-ksyms.o.lds lib/.lib_exports.o
address@hidden linux % eu-readelf -a lib/lib-ksyms.o
ELF Header:
  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
  Class:                             ELF64
  Data:                              2's complement, little endian
  Ident Version:                     1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              REL (Relocatable file)
  Machine:                           PowerPC 64-bit
  Version:                           1 (current)
  Entry point address:               0
  Start of program headers:          0 (bytes into file)
  Start of section headers:          192 (bytes into file)
  Flags:                             
  Size of this header:               64 (bytes)
  Size of program header entries:    0 (bytes)
  Number of program headers entries: 0
  Size of section header entries:    64 (bytes)
  Number of section headers entries: 4
  Section header string table index: 3

Section Headers:
[Nr] Name                 Type         Addr             Off      Size     ES
Flags Lk Inf Al
[ 0]                      NULL         0000000000000000 00000000 00000000  0   
    0   0  0
[ 1] .symtab              SYMTAB       0000000000000000 00000040 00000048 24   
    2   1  8
[ 2] .strtab              STRTAB       0000000000000000 00000088 00000016  0   
    0   0  1
[ 3] .shstrtab            STRTAB       0000000000000000 0000009e 0000001b  0   
    0   0  1


Symbol table [ 1] '.symtab' contains 3 entries:
 1 local symbol  String table: [ 2] '.strtab'
  Num:            Value   Size Type    Bind   Vis          Ndx Name
    0: 0000000000000000      0 NOTYPE  LOCAL  DEFAULT    UNDEF 
    1: 0000000000000000      0 NOTYPE  GLOBAL DEFAULT    UNDEF argv_split
    2: 0000000000000000      0 NOTYPE  GLOBAL DEFAULT    UNDEF argv_free

String section [2] '.strtab' contains 22 bytes at offset 0x88:
  [     0]  
  [     1]  argv_split
  [     c]  argv_free

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