[Bug gcov-profile/115628] New: undefined reference to `__gcov_merge

[Bug gcov-profile/115628] New: undefined reference to `__gcov_merge

[sadineniharish8446 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115628

            Bug ID: 115628
           Summary: undefined reference to `__gcov_merge
           Product: gcc
           Version: 13.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: gcov-profile
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sadineniharish8446 at gmail dot com
  Target Milestone: ---

[Bug gcov-profile/115628] undefined reference to `__gcov_merge

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115628

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2024-06-25
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Did you accidently submit the bug report without any message?

[Bug gcov-profile/115628] undefined reference to `__gcov_merge

[sadineniharish8446 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115628

--- Comment #2 from sadineniharish8446 at gmail dot com ---
I was trying build source code coverage for gcc but while running the tests we
are getting the following errors:
crtstuff.c:(.text.exit+0x5): undefined reference to `__gcov_exit'^M
collect2: error: ld returned 1 exit status^M
compiler exited with status 1
FAIL: g++.old-deja/g++.other/static13.C  -std=c++98 (test for excess errors)
Excess errors:
/usr/bin/ld:
/home/hsadineni/newgcc/gcc/build/gcc/testsuite/g++/../../crtbegin.o:(.data+0x80):
undefined reference to `__gcov_merge_add'
crtstuff.c:(.text.startup+0xa): undefined reference to `__gcov_init'
crtstuff.c:(.text.exit+0x5): undefined reference to `__gcov_exit'

Reproducible steps:

../configure --enable-languages=c++ --enable-coverage --disable-bootstrap
--disable-multilib  CFLAGS="-ftest-coverage -fprofile-arcs"
CXXFLAGS="-ftest-coverage -fprofile-arcs " LDFLAGS="--coverage"

make -j $(nproc)

make check-gcc RUNTESTFLAGS="old-deja.exp=g++.other/rtti4.C"

can you please let me know, whether its potential bug or any  flags(or)
configuration need to be added.

even, i have by tried passing -lgcov flag in LDFLAGS but still getting the same
error.

thanks,
Harish

[Bug gcov-profile/115628] undefined reference to `__gcov_merge

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115628

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|undefined reference to      |undefined reference to
                   |`__gcov_merge_add'          |`__gcov_merge
             Status|WAITING                     |RESOLVED
         Resolution|---                         |INVALID

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to sadineniharish8446 from comment #2)
> I was trying build source code coverage for gcc but while running the tests
> we are getting the following errors:
> crtstuff.c:(.text.exit+0x5): undefined reference to `__gcov_exit'^M
> collect2: error: ld returned 1 exit status^M
> compiler exited with status 1
> FAIL: g++.old-deja/g++.other/static13.C  -std=c++98 (test for excess errors)
> Excess errors:
> /usr/bin/ld:
> /home/hsadineni/newgcc/gcc/build/gcc/testsuite/g++/../../crtbegin.o:(.
> data+0x80): undefined reference to `__gcov_merge_add'
> crtstuff.c:(.text.startup+0xa): undefined reference to `__gcov_init'
> crtstuff.c:(.text.exit+0x5): undefined reference to `__gcov_exit'
> 
> Reproducible steps:
> 
> ../configure --enable-languages=c++ --enable-coverage --disable-bootstrap
> --disable-multilib  CFLAGS="-ftest-coverage -fprofile-arcs"
> CXXFLAGS="-ftest-coverage -fprofile-arcs " LDFLAGS="--coverage"

Yes this is not going to work as you are compiling libgcc with -ftest-coverage
which will almost never work.

you just need either --enable-coverage or --enable-coverage=opt .

[Bug gcov-profile/115628] undefined reference to `__gcov_merge

[sadineniharish8446 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115628

--- Comment #4 from sadineniharish8446 at gmail dot com ---
we ate trying to take coverage for libstdc++, I have tried following
configuration options but getting same error.

../configure --enable-languages=c,c++ - --disable-bootstrap --disable-multilib 
CFLAGS="-ftest-coverage -fprofile-arcs" CXXFLAGS="-ftest-coverage
-fprofile-arcs " LDFLAGS="--coverage"


can you please let me know which configuration will work. 

thanks,
Harish

[Bug gcov-profile/115628] undefined reference to `__gcov_merge

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115628

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to sadineniharish8446 from comment #4)
> we ate trying to take coverage for libstdc++, I have tried following
> configuration options but getting same error.
> 
> ../configure --enable-languages=c,c++ - --disable-bootstrap
> --disable-multilib  CFLAGS="-ftest-coverage -fprofile-arcs"
> CXXFLAGS="-ftest-coverage -fprofile-arcs " LDFLAGS="--coverage"
> 
> 
> can you please let me know which configuration will work. 

Try setting CXXFLAGS_FOR_TARGET only. Note this is not the right place to get
help like this. gcc@ (and libstdc++@) mailing list are better places to ask for
help on getting this working and only filing a bug if there is no way in the
end.