[Bug libelf/30729] New: elf_scncnt: undefined version: ELFUTILS_1.0 during linking phase of libelf.so

[Bug libelf/30729] New: elf_scncnt: undefined version: ELFUTILS_1.0 during linking phase of libelf.so

[kocelfc at tutanota dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=30729

            Bug ID: 30729
           Summary: elf_scncnt: undefined version: ELFUTILS_1.0 during
                    linking phase of libelf.so
           Product: elfutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libelf
          Assignee: unassigned at sourceware dot org
          Reporter: kocelfc at tutanota dot com
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

Steps to reproduce:

1. autoreconf -vfi
2. ./configure --enable-maintainer-mode --disable-debuginfod
3. export LDFLAGS="-Wl,--no-undefined-version"
4. make


gcc -std=gnu99 -Wall -Wshadow -Wformat=2 -Wold-style-definition
-Wstrict-prototypes -Wtrampolines -Wlogical-op -Wduplicated-cond
-Wnull-dereference -Wimplicit-fallthrough=5 -Wuse-after-free=3 -Werror -Wunused
-Wextra -Wstack-usage=262144    -D_FORTIFY_SOURCE=3 -g -O2 
-Wl,--no-undefined-version -Wl,--build-id -o libelf.so -shared -Wl,-z,defs
-Wl,-z,relro -o libelf.so \
        -Wl,--soname,libelf.so.1 \
        -Wl,--version-script,libelf.map \
        -Wl,--no-undefined \
        -Wl,--whole-archive libelf_pic.a -Wl,--no-whole-archive \
        ../lib/libeu.a -lz -lzstd -llzma -lbz2  
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld:
elf_scncnt: undefined version: ELFUTILS_1.0
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld:
failed to set dynamic section sizes: bad value
collect2: error: ld returned 1 exit status

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[Bug libelf/30729] elf_scncnt: undefined version: ELFUTILS_1.0 during linking phase of libelf.so

[sam at gentoo dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30729

Sam James <sam at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sam at gentoo dot org

--- Comment #1 from Sam James <sam at gentoo dot org> ---
(In reply to Kostadin Shishmanov from comment #0)
> Steps to reproduce:
> 
> 1. autoreconf -vfi
> 2. ./configure --enable-maintainer-mode --disable-debuginfod
> 3. export LDFLAGS="-Wl,--no-undefined-version"
> 4. make
> 

To be clear, the reason that this is an interesting flag (and why OP is testing
this) is because LLD 16 made it default for a bit (then reverted it) and LLD 17
will be setting it too.

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[Bug libelf/30729] Build failure with upcoming LLD 17 (elf_scncnt: undefined version: ELFUTILS_1.0 during linking phase of libelf.so)

[sam at gentoo dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30729

Sam James <sam at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|elf_scncnt: undefined       |Build failure with upcoming
                   |version: ELFUTILS_1.0       |LLD 17 (elf_scncnt:
                   |during linking phase of     |undefined version:
                   |libelf.so                   |ELFUTILS_1.0 during linking
                   |                            |phase of libelf.so)

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[Bug libelf/30729] Build failure with upcoming LLD 17 (elf_scncnt: undefined version: ELFUTILS_1.0 during linking phase of libelf.so)

[sam at gentoo dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30729

Sam James <sam at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.gentoo.org/sho
                   |                            |w_bug.cgi?id=913112

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[Bug libelf/30729] Build failure with upcoming LLD 17 (elf_scncnt: undefined version: ELFUTILS_1.0 during linking phase of libelf.so)

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30729

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark at klomp dot org

--- Comment #2 from Mark Wielaard <mark at klomp dot org> ---
So just to be clear, the issue is that elf_scncnt is only mentioned in the
libelf.map but doesn't actually exist (it never seems to have been)?

Does simply removing it from libelf.map resolve this issue?

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[Bug libelf/30729] Build failure with upcoming LLD 17 (elf_scncnt: undefined version: ELFUTILS_1.0 during linking phase of libelf.so)

[kocelfc at tutanota dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=30729

--- Comment #3 from Kostadin Shishmanov <kocelfc at tutanota dot com> ---
(In reply to Mark Wielaard from comment #2)
> So just to be clear, the issue is that elf_scncnt is only mentioned in the
> libelf.map but doesn't actually exist (it never seems to have been)?
> 
> Does simply removing it from libelf.map resolve this issue?

I removed it from the libelf.map file, built elfutils with the mentioned
LDFLAGS, it built with no issues, then I ran the testsuite, and everything
passed fine.

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[Bug libelf/30729] Build failure with upcoming LLD 17 (elf_scncnt: undefined version: ELFUTILS_1.0 during linking phase of libelf.so)

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30729

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #4 from Mark Wielaard <mark at klomp dot org> ---
Thanks for testing. Pushed that fix:

commit 09e61a65953ed814d9e970f7f9ffb9c2d8cda477
Author: Mark Wielaard <mark@klomp.org>
Date:   Mon Aug 28 20:23:41 2023 +0200

    libelf: Remove elf_scncnt from libelf.map

    elf_scncnt was never implemented. It was probably an old name for
    elf_getshnum (which was the deprecated name of the elf_getshdrnum
    alias). Just remove it from the map file

            * libelf/libelf.map (ELFUTILS_1.0): Remove elf_scncnt.

    https://sourceware.org/bugzilla/show_bug.cgi?id=30729

    Reported-by: Kostadin Shishmanov <kocelfc@tutanota.com>
    Signed-off-by: Mark Wielaard <mark@klomp.org>

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