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build with >=gcc-7.1 failed #136

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andy9a9 opened this issue Apr 4, 2019 · 10 comments
Open

build with >=gcc-7.1 failed #136

andy9a9 opened this issue Apr 4, 2019 · 10 comments

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@andy9a9
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andy9a9 commented Apr 4, 2019

After switching to newer gcc, some errors popped up.

compilation...
.../8.2.0/ld: ./.libs/libctemplate_nothreads.so: invalid string offset 40616 >= 40380 for section `.strtab'
.../8.2.0/ld: ./.libs/libctemplate_nothreads.so: invalid string offset 40412 >= 40380 for section `.strtab'
.../8.2.0/ld: ./.libs/libctemplate_nothreads.so: invalid string offset 40493 >= 40380 for section `.strtab'
.../8.2.0/ld: ./.libs/libctemplate_nothreads.so: invalid string offset 40616 >= 40380 for section `.strtab'
.../8.2.0/ld: ./.libs/libctemplate_nothreads.so: invalid string offset 40412 >= 40380 for section `.strtab'
.../8.2.0/ld: ./.libs/libctemplate_nothreads.so: invalid string offset 40493 >= 40380 for section `.strtab'

Looks like, that .strtab section is on different place.

objdump -dj .strtab libctemplate_nothreads.so.3.0.0 
libctemplate_nothreads.so.3.0.0:     file format elf32-littlearm

objdump: libctemplate_nothreads.so.3.0.0: invalid string offset 40616 >= 40380 for section `.strtab'
objdump: libctemplate_nothreads.so.3.0.0: invalid string offset 40412 >= 40380 for section `.strtab'
objdump: libctemplate_nothreads.so.3.0.0: invalid string offset 40493 >= 40380 for section `.strtab'
objdump: section '.strtab' mentioned in a -j option, but not found in any input file

readelf -S

# compiled with gcc-8.2.0 

There are 37 section headers, starting at offset 0x43b9f4:

Section Headers:
  [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf Al
  [ 0]                   NULL            00000000 000000 000000 00      0   0  0
  [ 1] .note.gnu.build-i NOTE            00000114 000114 000024 00   A  0   0  4
  [ 2] .gnu.hash         GNU_HASH        00000138 000138 00155c 04   A  3   0  4
  [ 3] .dynsym           DYNSYM          00001694 001694 002320 10   A  4   3  4
  [ 4] .dynstr           STRTAB          000039b4 0039b4 009fdb 00   A  0   0  1
  [ 5] .gnu.version      VERSYM          0000d990 00d990 000464 02   A  3   0  2
  [ 6] .gnu.version_r    VERNEED         0000ddf4 00ddf4 0000f0 00   A  4   3  4
  [ 7] .rel.dyn          REL             0000dee4 00dee4 0010d0 08   A  3   0  4
  [ 8] .rel.plt          REL             0000efb4 00efb4 000970 08  AI  3  21  4
  [ 9] .init             PROGBITS        0000f924 00f924 00000c 00  AX  0   0  4
  [10] .plt              PROGBITS        0000f930 00f930 000e3c 04  AX  0   0  4
  [11] .text             PROGBITS        0001076c 01076c 024ad4 00  AX  0   0  4
  [12] .fini             PROGBITS        00035240 035240 000008 00  AX  0   0  4
  [13] .rodata           PROGBITS        00035248 035248 00d9c4 00   A  0   0  4
  [14] .ARM.extab        PROGBITS        00042c0c 042c0c 0013bc 00   A  0   0  4
  [15] .ARM.exidx        ARM_EXIDX       00043fc8 043fc8 000908 00  AL 11   0  4
  [16] .eh_frame         PROGBITS        000448d0 0448d0 000004 00   A  0   0  4
  [17] .init_array       INIT_ARRAY      00054a48 044a48 000024 04  WA  0   0  4
  [18] .fini_array       FINI_ARRAY      00054a6c 044a6c 000004 04  WA  0   0  4
  [19] .data.rel.ro      PROGBITS        00054a70 044a70 000490 00  WA  0   0  4
  [20] .dynamic          DYNAMIC         00054f00 044f00 000100 08  WA  4   0  4
  [21] .got              PROGBITS        00055000 045000 000640 04  WA  0   0  4
  [22] .data             PROGBITS        00055640 045640 00033c 00  WA  0   0  8
  [23] .bss              NOBITS          0005597c 04597c 000840 00  WA  0   0  4
  [24] .comment          PROGBITS        00000000 04597c 000011 01  MS  0   0  1
  [25] .ARM.attributes   ARM_ATTRIBUTES  00000000 04598d 000028 00      0   0  1
  [26] .debug_aranges    PROGBITS        00000000 0459b8 0007d8 00      0   0  8
  [27] .debug_info       PROGBITS        00000000 046190 19dbd1 00      0   0  1
  [28] .debug_abbrev     PROGBITS        00000000 1e3d61 00af19 00      0   0  1
  [29] .debug_line       PROGBITS        00000000 1eec7a 041031 00      0   0  1
  [30] .debug_frame      PROGBITS        00000000 22fcac 004644 00      0   0  4
  [31] .debug_str        PROGBITS        00000000 2342f0 103bef 01  MS  0   0  1
  [32] .debug_loc        PROGBITS        00000000 337edf 0d38fa 00      0   0  1
  [33] .debug_ranges     PROGBITS        00000000 40b7e0 024098 00      0   0  8
  [34] .symtab           SYMTAB          00000000 42f878 002250 10     35 138  4
  [35] .strtab           STRTAB          00000000 431ac8 009dbc 00      0   0  1
  [36] .shstrtab         STRTAB          00000000 43b884 00016d 00      0   0  1

# compiled with gcc-6.3.0

There are 38 section headers, starting at offset 0x363f88:

Section Headers:
  [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf Al
  [ 0]                   NULL            00000000 000000 000000 00      0   0  0
  [ 1] .note.gnu.build-i NOTE            00000114 000114 000024 00   A  0   0  4
  [ 2] .gnu.hash         GNU_HASH        00000138 000138 001740 04   A  3   0  4
  [ 3] .dynsym           DYNSYM          00001878 001878 0023b0 10   A  4   3  4
  [ 4] .dynstr           STRTAB          00003c28 003c28 009ce7 00   A  0   0  1
  [ 5] .gnu.version      VERSYM          0000d910 00d910 000476 02   A  3   0  2
  [ 6] .gnu.version_r    VERNEED         0000dd88 00dd88 0000f0 00   A  4   3  4
  [ 7] .rel.dyn          REL             0000de78 00de78 001010 08   A  3   0  4
  [ 8] .rel.plt          REL             0000ee88 00ee88 000968 08  AI  3  22  4
  [ 9] .init             PROGBITS        0000f7f0 00f7f0 00000c 00  AX  0   0  4
  [10] .plt              PROGBITS        0000f7fc 00f7fc 000e30 04  AX  0   0  4
  [11] .text             PROGBITS        0001062c 01062c 029634 00  AX  0   0  4
  [12] .fini             PROGBITS        00039c60 039c60 000008 00  AX  0   0  4
  [13] .rodata           PROGBITS        00039c68 039c68 00d9a4 00   A  0   0  4
  [14] .ARM.extab        PROGBITS        0004760c 04760c 0018b8 00   A  0   0  4
  [15] .ARM.exidx        ARM_EXIDX       00048ec4 048ec4 000968 00  AL 11   0  4
  [16] .eh_frame         PROGBITS        0004982c 04982c 000004 00   A  0   0  4
  [17] .init_array       INIT_ARRAY      00059a44 049a44 000024 04  WA  0   0  4
  [18] .fini_array       FINI_ARRAY      00059a68 049a68 000004 04  WA  0   0  4
-->  [19] .jcr              PROGBITS        00059a6c 049a6c 000004 00  WA  0   0  4
  [20] .data.rel.ro      PROGBITS        00059a70 049a70 000490 00  WA  0   0  4
  [21] .dynamic          DYNAMIC         00059f00 049f00 000100 08  WA  4   0  4
  [22] .got              PROGBITS        0005a000 04a000 0005dc 04  WA  0   0  4
  [23] .data             PROGBITS        0005a5e0 04a5e0 00033c 00  WA  0   0  8
  [24] .bss              NOBITS          0005a91c 04a91c 000840 00  WA  0   0  4
  [25] .comment          PROGBITS        00000000 04a91c 000011 01  MS  0   0  1
  [26] .ARM.attributes   ARM_ATTRIBUTES  00000000 04a92d 000028 00      0   0  1
  [27] .debug_aranges    PROGBITS        00000000 04a958 000798 00      0   0  8
  [28] .debug_info       PROGBITS        00000000 04b0f0 14ab2d 00      0   0  1
  [29] .debug_abbrev     PROGBITS        00000000 195c1d 0098e0 00      0   0  1
  [30] .debug_line       PROGBITS        00000000 19f4fd 0163dc 00      0   0  1
  [31] .debug_frame      PROGBITS        00000000 1b58dc 0045dc 00      0   0  4
  [32] .debug_str        PROGBITS        00000000 1b9eb8 106f6c 01  MS  0   0  1
  [33] .debug_loc        PROGBITS        00000000 2c0e24 07c621 00      0   0  1
  [34] .debug_ranges     PROGBITS        00000000 33d448 01a700 00      0   0  8
  [35] .symtab           SYMTAB          00000000 357b48 002290 10     36 144  4
  [36] .strtab           STRTAB          00000000 359dd8 00a03e 00      0   0  1
  [37] .shstrtab         STRTAB          00000000 363e16 000172 00      0   0  1

After comparing with working version (compiled with gcc 6.3.0) looks like, .jcr section is missing. After some googling, seems to be, that gcc support for Java is gone since version 7 gjc.
@OlafvdSpek
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Are you mixing files build by different versions of compilers?
How is this a libctemplate bug?

@andy9a9
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andy9a9 commented Apr 4, 2019 •
edited
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Just for the introduction. I was using ctemplate with yocto build system (pyro branch). After upgrading to newer yocto system (thud), these errors have been showed. Pyro is using gcc-6.3.0 and Thud has new 8.2.0. So, I've just switched build system with new gcc, without ctemplate code change.

My comparison is between mentioned buildsystems.

@OlafvdSpek
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OlafvdSpek commented Apr 4, 2019 •
edited
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Is this reproducible without Yocto, Pyro and Thud?

@andy9a9
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andy9a9 commented Apr 4, 2019

I Have gcc-8.3.0 on Debian from scratch. Compilation was successful. So seems to, that is something related to yocto buildsystem.
Do you have some idea, what could be wrong?

@OlafvdSpek
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Nope

@andy9a9
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andy9a9 commented Apr 8, 2019

After new testing, it's seems to be, that is relevant for cross-compiling, but not only for yocto.
I have set-up new Debian machine and download arm-linux-gnueabi compiler. So it's reproducible.

See error.log

@OlafvdSpek
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I'm no expert on automake, what would be required for cross-compiling and what could be wrong.

@andy9a9
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andy9a9 commented Apr 12, 2019 •
edited
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After some testing, I have identified, that some symbols have been dropped from library. It sounds like, some of them are required.

_ZN3URL19HasInsecureProtocolEPKci
_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE17_M_realloc_insertIJRKS5_EEEvN9__gnu_cxx17__normal_iteratorIPS5_S7_EEDpOT_
_ZNSt6vectorISt4pairINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_ESaIS7_EE17_M_realloc_insertIJS7_EEEvN9__gnu_cxx17__normal_iteratorIPS7_S9_EEDpOT_
_ZNSt6vectorISt4pairINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_ESaIS7_EED1Ev
_ZNSt6vectorISt4pairINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_ESaIS7_EED2Ev
_ZNSt6vectorISt4pairIyiESaIS1_EE17_M_realloc_insertIJRKS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_
_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPKcEEvT_S8_St20forward_iterator_tag
_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_M_constructIPcEEvT_S7_St20forward_iterator_tag
_ZNSt8_Rb_treeINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS5_S5_ESt10_Select1stIS8_ESt4lessIS5_ESaIS8_EE22_M_emplace_hint_uniqueIJRKSt21piecewise_construct_tSt5tupleIJOS5_EESJ_IJEEEEESt17_Rb_tree_iteratorIS8_ESt23_Rb_tree_const_iteratorIS8_EDpOT_
_ZNSt8_Rb_treeINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS5_S5_ESt10_Select1stIS8_ESt4lessIS5_ESaIS8_EE24_M_get_insert_unique_posERS7_
_ZNSt8_Rb_treeINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS5_S5_ESt10_Select1stIS8_ESt4lessIS5_ESaIS8_EE8_M_eraseEPSt13_Rb_tree_nodeIS8_E
_ZSt13__adjust_heapIN9__gnu_cxx17__normal_iteratorIPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt6vectorIS7_SaIS7_EEEEiS7_NS0_5__ops15_Iter_less_iterEEvT_T0_SG_T1_T2_
_ZSt16__insertion_sortIN9__gnu_cxx17__normal_iteratorIPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt6vectorIS7_SaIS7_EEEENS0_5__ops15_Iter_less_iterEEvT_SF_T0_
_ZSt25__unguarded_linear_insertIN9__gnu_cxx17__normal_iteratorIPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt6vectorIS7_SaIS7_EEEENS0_5__ops14_Val_less_iterEEvT_T0_
_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_RKS8_

Current list of required symbols:

CTEMPLATE_SYMBOLS = '(ctemplate|template_modifiers|BaseArena|UnsafeArena|[^A-Za-z]Template[^A-Za-z]|TemplateDictionary|TemplateNamelist|TemplateFromString|TemplateString|TemplateState|[^A-Za-z]Strip[^A-Za-z])'

[EDIT]:
After some symbols enabling, seems to be, that I have found, the missing one. After adding forward_iterator and tree_iterator compilation was successful.
There is still lot of warning similar to this one.
(More info about deprecated iterators could be found here https://www.fluentcpp.com/2018/05/08/std-iterator-deprecated/ ).

In file included from usr/include/c++/8.2.0/vector:69,
                 from ./src/ctemplate/template_cache.h:40,
                 from src/template_cache.cc:34:
usr/include/c++/8.2.0/bits/vector.tcc: In member function 'void std::vector<_Tp, _Alloc>::_M_realloc_insert(std::vector<_Tp, _Alloc>::iterator, _Args&& ...) [with _Args = {const std::pair<long long unsigned int, int>&}; _Tp = std::pair<long long unsigned int, int>; _Alloc = std::allocator<std::pair<long long unsigned int, int> >]':
usr/include/c++/8.2.0/bits/vector.tcc:413:7: note: parameter passing for argument of type 'std::vector<std::pair<long long unsigned int, int> >::iterator' {aka '__gnu_cxx::__normal_iterator<std::pair<long long unsigned int, int>*, std::vector<std::pair<long long unsigned int, int> > >'} changed in GCC 7.1
       vector<_Tp, _Alloc>::
       ^~~~~~~~~~~~~~~~~~~

Another question is, why are you removing some symbols from library? Probably when the toolchain is changed, you have to re-add new symbol. Isn't possible just remove this symbol polluting and keep linker do it yourself?

@andy9a9
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andy9a9 commented May 12, 2019

Hi @OlafvdSpek !

Did you have some time for thinking about it?

@OlafvdSpek
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No, as I have no experience with cross-compiling.

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