can't build shared Perl on Linux

[p5pRT]

Migrated from rt.perl.org#134412 (status was 'rejected')

Searchable as RT134412$

[p5pRT]

From [email protected]

Created by [email protected]

when build perl as below​:
./Configure -DEBUGGING=both -Duseshrplib -Duse64bitall -Dusedtrace -des

perl is still built as libperl.a

Perl Info

./perl -V
./perl: error while loading shared libraries: /home/andy/perl5/perlbrew/perls/perl-5.30.0/lib/5.30.0/x86_64-linux/CORE/libperl.a: invalid ELF header

andy@andyhome:~/perl5/perlbrew/build/perl-5.30.0/perl-5.30.0$ uname -a
Linux andyhome 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

[p5pRT]

From @tonycoz

On Sun, 08 Sep 2019 18​:57​:41 -0700, xyf.xiao@​outlook.com wrote​:

This is a bug report for perl from xyf.xiao@​outlook.com,
generated with the help of perlbug 1.41 running under perl 5.30.0.

-----------------------------------------------------------------
[Please describe your issue here]
when build perl as below​:
./Configure -DEBUGGING=both -Duseshrplib -Duse64bitall -Dusedtrace
-des

perl is still built as libperl.a

[Please do not change anything below this line]
-----------------------------------------------------------------
---
./perl -V
./perl​: error while loading shared libraries​:
/home/andy/perl5/perlbrew/perls/perl-5.30.0/lib/5.30.0/x86_64-
linux/CORE/libperl.a​: invalid ELF header

andy@​andyhome​:~/perl5/perlbrew/build/perl-5.30.0/perl-5.30.0$ uname -a
Linux andyhome 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11​:12​:41 UTC
2019 x86_64 x86_64 x86_64 GNU/Linux

It looks like you're building with perlbrew, what happens if you build directly instead?

I just built 5.30.0 with​:

./Configure -des -Dusedtrace -Duseshrplib -DDEBUGGING=both -Duse64bitall -Dprefix=/home/tony/perl/5.30.0-dtrace
make -j6 test-prep
TEST_JOBS=6 make -j6 test_harness
make install

No libperl.a was installed​:

tony@​mars​:.../git/perl$ find /home/tony/perl/5.30.0-dtrace/ -name libperl.a
tony@​mars​:.../git/perl$

and perl is dynamically linked to libperl.so​:

$ ldd ~/perl/5.30.0-dtrace/bin/perl
  linux-vdso.so.1 (0x00007ffc79f99000)
  libperl.so => /home/tony/perl/5.30.0-dtrace/lib/5.30.0/x86_64-linux/CORE/libperl.so (0x00007f1e22aeb000)
  libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f1e228ce000)
  libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007f1e226b6000)
  libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f1e224b2000)
  libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f1e221ae000)
  libcrypt.so.1 => /lib/x86_64-linux-gnu/libcrypt.so.1 (0x00007f1e21f76000)
  libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007f1e21d73000)
  libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f1e219d4000)
  /lib64/ld-linux-x86-64.so.2 (0x00007f1e2336e000)

To see if perlbrew added anything you might try​:

grep config_args config.sh

in the build directory.

Tony

[p5pRT]

The RT System itself - Status changed from 'new' to 'open'

[p5pRT]

From [email protected]

Created by [email protected]

when build perl as below​:
./Configure -DEBUGGING=both -Duseshrplib -Duse64bitall -Dusedtrace -des

perl is still built as libperl.a

Perl Info

---
./perl -V
./perl: error while loading shared libraries: /home/andy/perl5/perlbrew/perls/perl-5.30.0/lib/5.30.0/x86_64-linux/CORE/libperl.a: invalid ELF header

andy@andyhome:~/perl5/perlbrew/build/perl-5.30.0/perl-5.30.0$ uname -a
Linux andyhome 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

[p5pRT]

From @tonycoz

On Sun, 22 Sep 2019 22​:01​:30 -0700, xyf.xiao@​outlook.com wrote​:

Sorry for the such delay to reply! I had pheumonia and had to go into
hospital for 2 weeks. 🙁
I've build shared perl from tarball extracted directly, and everything
is ok. Thanks.

Thanks, closing.

Tony

[p5pRT]

@tonycoz - Status changed from 'open' to 'rejected'