[cfe-dev] Static linking a program
Wink Saville via cfe-dev
cfe-dev at lists.llvm.org
Wed Jun 27 09:04:09 PDT 2018
On Wed, Jun 27, 2018 at 8:02 AM, mats petersson <mats at planetcatfish.com> wrote:
> Just to make sure this is NOT the issue: You are compiling and running
> "main" on the same machine [physical, virtual or docker], and the compiler &
> libraries you use are built for/on the machine you are running "main" on?
Everything is being done on my physical Arch Linux box updated yesterday.
> Not copying [or sharing over network filesystem] so that "main" is being run
> on a different version of Linux? I've seen similar issues from trying to use
> "wrong" versions of library on different versions/variants of Linux
> (presumably because system calls, ABI or something else changed between
> Release X of Linux A and Release Y of Linux B).
>
> --
> Mats
>
> On 27 June 2018 at 07:44, Rui Ueyama via cfe-dev <cfe-dev at lists.llvm.org>
> wrote:
>>
>> It works for me, but there might be some bug in lld that occurs in your
>> environment but not in mine. Could you run the same command line with
>> -Wl,--reproduce=repro.tar and share a resulting repro.tar with me? repro.tar
>> contanis all input files fed to the linker, so I can run the same command
>> with the same input as yours on my machine.
>>
>> On Wed, Jun 27, 2018 at 2:59 PM Wink Saville via cfe-dev
>> <cfe-dev at lists.llvm.org> wrote:
>>>
>>> Thanks everyone, using "clang++ -v -static main.cpp" as a model worked,
>>> see: https://github.com/winksaville/explore-cpp-static-linking
>>>
>>> But a curious thing, if I ask to use lld linker it compiles and links
>>> fine, but it
>>> fails with Segmentation fault. What have I done wrong now?
>>>
>>> $ clang++ -v -fuse-ld=lld -static main.cpp -o main
>>> clang version 6.0.0 (tags/RELEASE_600/final)
>>> Target: x86_64-pc-linux-gnu
>>> Thread model: posix
>>> InstalledDir: /usr/bin
>>> Found candidate GCC installation:
>>> /usr/bin/../lib/gcc/x86_64-pc-linux-gnu/8.1.1
>>> Found candidate GCC installation:
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1
>>> Found candidate GCC installation: /usr/lib/gcc/x86_64-pc-linux-gnu/8.1.1
>>> Found candidate GCC installation:
>>> /usr/lib64/gcc/x86_64-pc-linux-gnu/8.1.1
>>> Selected GCC installation:
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1
>>> Candidate multilib: .;@m64
>>> Candidate multilib: 32;@m32
>>> Selected multilib: .;@m64
>>> "/usr/bin/clang-6.0" -cc1 -triple x86_64-pc-linux-gnu -emit-obj
>>> -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names
>>> -main-file-name main.cpp -static-define -mrelocation-model pic
>>> -pic-level 2 -pic-is-pie -mthread-model posix -mdisable-fp-elim
>>> -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables
>>> -fuse-init-array -target-cpu x86-64 -dwarf-column-info
>>> -debugger-tuning=gdb -v -resource-dir /usr/lib/clang/6.0.0
>>> -internal-isystem
>>>
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../include/c++/8.1.1
>>> -internal-isystem
>>>
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../include/c++/8.1.1/x86_64-pc-linux-gnu
>>> -internal-isystem
>>>
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../include/c++/8.1.1/backward
>>> -internal-isystem /usr/local/include -internal-isystem
>>> /usr/lib/clang/6.0.0/include -internal-externc-isystem /include
>>> -internal-externc-isystem /usr/include -fdeprecated-macro
>>> -fdebug-compilation-dir /home/wink/prgs/explore-cpp-static-linking
>>> -ferror-limit 19 -fmessage-length 121 -stack-protector 2
>>> -fobjc-runtime=gcc -fcxx-exceptions -fexceptions
>>> -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/main-e6f2d0.o -x
>>> c++ main.cpp
>>> clang -cc1 version 6.0.0 based upon LLVM 6.0.0 default target
>>> x86_64-pc-linux-gnu
>>> ignoring nonexistent directory "/include"
>>> #include "..." search starts here:
>>> #include <...> search starts here:
>>>
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../include/c++/8.1.1
>>>
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../include/c++/8.1.1/x86_64-pc-linux-gnu
>>>
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../include/c++/8.1.1/backward
>>> /usr/local/include
>>> /usr/lib/clang/6.0.0/include
>>> /usr/include
>>> End of search list.
>>> "/usr/bin/ld.lld" -m elf_x86_64 -static -o main
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../lib64/crt1.o
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../lib64/crti.o
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/crtbeginT.o
>>> -L/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1
>>> -L/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../lib64
>>> -L/usr/bin/../lib64 -L/lib/../lib64 -L/usr/lib/../lib64
>>> -L/usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../..
>>> -L/usr/bin/../lib -L/lib -L/usr/lib /tmp/main-e6f2d0.o -lstdc++ -lm
>>> --start-group -lgcc -lgcc_eh -lc --end-group
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/crtend.o
>>> /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.1.1/../../../../lib64/crtn.o
>>>
>>> $ ./main 1 2 3
>>> Segmentation fault (core dumped)
>>>
>>> $ coredumpctl gdb
>>> PID: 5870 (main)
>>> UID: 1000 (wink)
>>> GID: 100 (users)
>>> Signal: 11 (SEGV)
>>> Timestamp: Tue 2018-06-26 22:40:56 PDT (6s ago)
>>> Command Line: ./main 1 2 3
>>> Executable: /home/wink/prgs/explore-cpp-static-linking/main
>>> Control Group: /user.slice/user-1000.slice/session-c2.scope
>>> Unit: session-c2.scope
>>> Slice: user-1000.slice
>>> Session: c2
>>> Owner UID: 1000 (wink)
>>> Boot ID: 65910f0244bf4b62905c0198842b62d4
>>> Machine ID: 8f80fd742eae4659baed812cd07a9439
>>> Hostname: wink-desktop
>>> Storage:
>>>
>>> /var/lib/systemd/coredump/core.main.1000.65910f0244bf4b62905c0198842b62d4.5870.1530078056000000.lz4
>>> Message: Process 5870 (main) of user 1000 dumped core.
>>>
>>> Stack trace of thread 5870:
>>> #0 0x0000000000383dc6 n/a
>>> (/home/wink/prgs/explore-cpp-static-linking/main)
>>>
>>> GNU gdb (GDB) 8.1
>>> Copyright (C) 2018 Free Software Foundation, Inc.
>>> License GPLv3+: GNU GPL version 3 or later
>>> <http://gnu.org/licenses/gpl.html>
>>> This is free software: you are free to change and redistribute it.
>>> There is NO WARRANTY, to the extent permitted by law. Type "show
>>> copying"
>>> and "show warranty" for details.
>>> This GDB was configured as "x86_64-pc-linux-gnu".
>>> Type "show configuration" for configuration details.
>>> For bug reporting instructions, please see:
>>> <http://www.gnu.org/software/gdb/bugs/>.
>>> Find the GDB manual and other documentation resources online at:
>>> <http://www.gnu.org/software/gdb/documentation/>.
>>> For help, type "help".
>>> Type "apropos word" to search for commands related to "word"...
>>> Reading symbols from
>>> /home/wink/prgs/explore-cpp-static-linking/main...(no debugging
>>> symbols found)...done.
>>> [New LWP 5870]
>>> Core was generated by `./main 1 2 3'.
>>> Program terminated with signal SIGSEGV, Segmentation fault.
>>> #0 0x0000000000383dc6 in _dl_get_origin ()
>>> (gdb) bt
>>> #0 0x0000000000383dc6 in _dl_get_origin ()
>>> #1 0x000000000038342f in _dl_non_dynamic_init ()
>>> #2 0x00000000002eecd1 in __libc_init_first ()
>>> #3 0x00000000002ee9c7 in __libc_start_main ()
>>> #4 0x000000000025302a in _start ()
>>>
>>> On Tue, Jun 26, 2018 at 2:58 PM, Joerg Sonnenberger via cfe-dev
>>> <cfe-dev at lists.llvm.org> wrote:
>>> > On Tue, Jun 26, 2018 at 09:36:18PM +0000, Shoaib Meenai via cfe-dev
>>> > wrote:
>>> >> I do see that you're linking all the start files yourself, but the
>>> >> ordering can also make a difference.
>>> >
>>> > crt0.o / crt1.o was missing.
>>> >
>>> > Joerg
>>> > _______________________________________________
>>> > cfe-dev mailing list
>>> > cfe-dev at lists.llvm.org
>>> > http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
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>>
>>
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