bug#9927: unexec/unexmacosx fails with GCC 4.6.1 on intel Mac OS X 10.6.8

[Peter Dyballa]

Am 17.05.2012 um 08:35 schrieb Paul Eggert:

> 
> I'm afraid that fixing it will require some expertise in Mac OS X and
> its executable format, expertise that I do not have.


And neither me... Maybe it's not necessary to work hard on this: Apple prefers 
Clang and LLVM GCC 4.2 over GCC 4.5, 4.6, 4.7,... These produce files 
unexmacosx can handle.


Here is a slightly different failure when I use GCC 4.7.0:

        --- Header Information ---
        Magic = 0xfeedface
        CPUType = 7
        CPUSubType = 3
        FileType = 0x2
        NCmds = 25
        SizeOfCmds = 2564
        Flags = 0x01000085
        Highest address of load commands in input file: 0x438000
        Lowest offset of all sections in __TEXT segment:   0x1650
        --- List of Load Commands in Input File ---
        # cmd              cmdsize name                address     size
        0 LC_SEGMENT             56 __PAGEZERO                0   0x1000
        1 LC_SEGMENT            600 __TEXT               0x1000 0x1b0000
                                   __text               0x2650 0x155c63
                                   __text_cold        0x1582b3    0x761
                                   __text_startup     0x158a14   0x1339
                                   __symbol_stub      0x159d4e    0xc90
                                   __stub_helper      0x15a9e0   0x14fc
                                   __cstring          0x15bedc  0x14683
                                   __const            0x170560    0x838
                                   __eh_frame         0x170d98  0x40268
        2 LC_SEGMENT            736 __DATA             0x1b1000 0x1dc000
                                   __program_vars     0x1b1000     0x14
                                   __nl_symbol_ptr    0x1b1014    0xb14
                                   __la_symbol_ptr    0x1b1b28    0x860
                                   __data             0x1b2390 0x1956dc
                                   __const            0x347a70   0x1008
                                   __static_data      0x348a80     0x31
                                   __bss4             0x348ac0   0x6554
                                   __bss2             0x34f014  0x2fb68
                                   __pu_bss2          0x37eb7c   0x5414
                                   __pu_bss4          0x383f90   0x85e4
        3 LC_SEGMENT             56 __LINKEDIT         0x38d000  0xab000
        4 LC_DYLD_INFO_ONLY      48
        5 LC_SYMTAB              24
        6 LC_DYSYMTAB            80
        7 LC_LOAD_DYLINKER       28
        8 LC_UUID                24
        9 LC_UNIXTHREAD          80
        10 LC_LOAD_DYLIB          52
        11 LC_LOAD_DYLIB          52
        12 LC_LOAD_DYLIB          52
        13 LC_LOAD_DYLIB          52
        14 LC_LOAD_DYLIB          52
        15 LC_LOAD_DYLIB          52
        16 LC_LOAD_DYLIB          56
        17 LC_LOAD_DYLIB          56
        18 LC_LOAD_DYLIB          72
        19 LC_LOAD_DYLIB          68
        20 LC_LOAD_DYLIB          60
        21 LC_LOAD_DYLIB          48
        22 LC_LOAD_DYLIB          52
        23 LC_LOAD_DYLIB          56
        24 LC_LOAD_DYLIB          52
         0x1cfc080 (sz:   0x3f1c/  0x3f20)
         0x1c00000 (sz:  0xfc080/ 0xfc080)
         0x18fc080 (sz:   0x3f1c/  0x3f20)
         0x1800000 (sz:  0xfc080/ 0xfc080)
         0x27f8000 (sz:   0x5316/  0x7f98)
         0x2000000 (sz: 0x52f08b/0x7f8000)
          0xae6000 (sz:        0/  0x1000)
        --- Load Commands written to Output File ---
        Writing segment __PAGEZERO       @        0 (       0/  0x1000 @        
  0)
        Writing segment __TEXT           @        0 (0x1b0000/0x1b0000 @     
0x1000)
        Writing segment __DATA           @ 0x1b0000 (0x1dc000/0x1dc000 @   
0x1b1000)
                section __program_vars   at 0x1b0000 - 0x1b0014 (sz:     0x14)
                section __nl_symbol_ptr  at 0x1b0014 - 0x1b0b28 (sz:    0xb14)
                section __la_symbol_ptr  at 0x1b0b28 - 0x1b1388 (sz:    0x860)
                section __data           at 0x1b1390 - 0x346a6c (sz: 0x1956dc)
                section __const          at 0x346a70 - 0x347a78 (sz:   0x1008)
        unexec: unrecognized section name in __DATA segment
        make[1]: *** [bootstrap-emacs] Error 1
        make[1]: Target `all' not remade because of errors.
        make: *** [src] Error 2
        make: Target `all' not remade because of errors.

--
Greetings

  Pete

To most people solutions mean finding the answers. But to chemists solutions
are things that are still all mixed up.