loadable library and perl binaries are mismatched

[fluca1978]

Running pgbackrest 2.10 release on Ubuntu 18.10 I got the following when doing a simple check:

% pgbackrest check --stanza=traf
./perl/libc.auto.c: loadable library and perl binaries are mismatched (got handshake key 0xc200000, needed 0xc280000)

Some information about the system:

% uname -a
Linux n261732 4.18.0-15-generic #16-Ubuntu SMP Thu Feb 7 10:56:39 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

% perl -v
This is perl 5, version 26, subversion 2 (v5.26.2) built for x86_64-linux-gnu-thread-multi
(with 63 registered patches, see perl -V for more detail)

% pgbackrest version
pgBackRest 2.10
% env | grep PERL5

I've compiled pgbackrest both with perlbrew enabled or not, nothing changes. Am I missing something?

[dwsteele]

It seems that your libperl version and your perl version are not the same.

Try this to get the libperl version:

ls -lah /usr/lib/x86_64-linux-gnu/libperl.so

[fluca1978]

@dwsteele you may be right since I found:

% locate libperl.so
/usr/lib/x86_64-linux-gnu/libperl.so.5.26
/usr/lib/x86_64-linux-gnu/libperl.so.5.26.2

while perl is 5.28 (without perlbrew). But I don't know how to fix it, since I was expecting the system was keeping coherent libraries and executables. Suggestions?

[fluca1978]

Sorry, I did not get my coffee!
With perlbrew turned off I've system Perl 5.26 and therefore the libraries are the correct ones (!). But trying to recompile I got an error:

% make -s -C src
/usr/bin/ld: cannot find -lperl
collect2: error: ld returned 1 exit status
make: *** [Makefile:163: pgbackrest] Error 1

which I suspect is due to the fact that libperl.so is named differently. Linking with a name libperl.so produces me another longer compile error:

% make 
gcc -o pgbackrest command/archive/common.o command/archive/get/file.o command/archive/get/get.o command/archive/push/push.o command/help/help.o command/info/info.o command/command.o command/control/control.o common/debug.o common/encode.o common/encode/base64.o common/error.o common/exec.o common/exit.o common/fork.o common/io/bufferRead.o common/io/bufferWrite.o common/io/filter/buffer.o common/io/filter/filter.o common/io/filter/group.o common/io/filter/size.o common/io/handleRead.o common/io/handleWrite.o common/io/http/client.o common/io/http/common.o common/io/http/header.o common/io/http/query.o common/io/io.o common/io/read.o common/io/tls/client.o common/io/write.o common/ini.o common/lock.o common/log.o common/memContext.o common/regExp.o common/stackTrace.o common/time.o common/type/buffer.o common/type/convert.o common/type/json.o common/type/keyValue.o common/type/list.o common/type/string.o common/type/stringList.o common/type/variant.o common/type/variantList.o common/type/xml.o common/wait.o compress/gzip.o compress/gzipCompress.o compress/gzipDecompress.o config/config.o config/define.o config/exec.o config/load.o config/parse.o crypto/cipherBlock.o crypto/hash.o crypto/crypto.o info/info.o info/infoArchive.o info/infoBackup.o info/infoManifest.o info/infoPg.o perl/config.o perl/exec.o postgres/interface.o postgres/interface/v083.o postgres/interface/v084.o postgres/interface/v090.o postgres/interface/v091.o postgres/interface/v092.o postgres/interface/v093.o postgres/interface/v094.o postgres/interface/v095.o postgres/interface/v096.o postgres/interface/v100.o postgres/interface/v110.o postgres/pageChecksum.o protocol/client.o protocol/helper.o storage/driver/posix/storage.o storage/driver/posix/common.o storage/driver/posix/fileRead.o storage/driver/posix/fileWrite.o storage/driver/remote/fileRead.o storage/driver/remote/storage.o storage/driver/s3/fileRead.o storage/driver/s3/storage.o storage/fileRead.o storage/fileWrite.o storage/helper.o storage/storage.o main.o -lcrypto -lssl -lxml2 -lz `perl -MExtUtils::Embed -e ldopts` 
/usr/bin/ld: perl/exec.o: in function `XS_pgBackRest__LibC_decodeToBin':
exec.c:(.text+0x29b): undefined reference to `PL_markstack_ptr'
/usr/bin/ld: exec.c:(.text+0x2a2): undefined reference to `PL_stack_sp'
/usr/bin/ld: exec.c:(.text+0x2ad): undefined reference to `PL_markstack_ptr'
/usr/bin/ld: exec.c:(.text+0x2b4): undefined reference to `PL_stack_base'
/usr/bin/ld: exec.c:(.text+0x35f): undefined reference to `PL_stack_base'
/usr/bin/ld: exec.c:(.text+0x36a): undefined reference to `PL_stack_base'
/usr/bin/ld: exec.c:(.text+0x375): undefined reference to `PL_stack_sp'
...

so something is messed up with my environment. Suggestions?

[fluca1978]

Apparently one problem was about the need to clean up compiled objects (I've also proposed a change to the Makefile, see #689). Now I've a problem on DBD::Pg that I'm trying to solve.

[fluca1978]

I do confirm that, after having cleaned compilation objects and compiled with system-wide perl, I can run it.

[dwsteele]

Glad to hear it. I'll have a look at your PRs.

[lock]

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