[syslog-ng] Getting error : .../libsyslog-ng.so: file not recognized: File truncated

Nitish Saboo nitish.saboo55 at gmail.com
Fri Feb 7 12:08:51 UTC 2020 

Hi Kokan,

Today, I compiled syslog-ng-3.7.1 on a Ubuntu 14.04 'Desktop' version(on a
VM).Then I tried compiling my CGO project  with syslog-ng dependecies on a
Ubuntu 14.04 'Server' and it failed with the same error:

[11:50:29][shellscript]
lib/../deps/syslog/syslog-ng-3.7.1/install/lib/libsyslog-ng.so: file not
recognized: File truncated
[11:50:29][shellscript] collect2: error: ld returned 1 exit status
[11:50:29][shellscript] make: *** [main] Error 2

Is it possible that the syslog-ng was compiled on a Ubuntu 14.04 Desktop
version and then compiling the CGO project on a Ubuntu 14.04 Server causing
this error ?
There is no architecture difference between Ubuntu Desktop version and
Ubuntu server but I am not sure if that can cause issue with this
libsyslog-ng.so shared object.

Thanks,
Nitish

On Thu, Feb 6, 2020 at 2:09 PM Nitish Saboo <nitish.saboo55 at gmail.com>
wrote:

> Hi Kokan,
>
> 1)Have you verified if both file is the same (no transport issue) ? (check
> sha256sum)
>
> Yes, the checksum of the file is same on the machine(Ubuntu 16.04) where I
> compiled syslog-ng3.7.1 and on the machine(Ubuntu 14.04) where I am trying
> to compile my CGO project.
>
> 2)What was the exact linker option it was called with ? (you can ask
> gcc/clang to emit such information with -### option)
>
> Are you asking for the following options that I am using to compile the
> project ?:
>
> //#cgo CFLAGS: -I${SRCDIR}/../deps/syslog/syslog-ng-3.7.1/
> //#cgo CFLAGS: -I${SRCDIR}/../deps/syslog/syslog-ng-3.7.1/build
> //#cgo CFLAGS: -I${SRCDIR}/../deps/syslog/syslog-ng-3.7.1/install/include/
> //#cgo CFLAGS:
> -I${SRCDIR}/../deps/syslog/syslog-ng-3.7.1/install/include/syslog-ng
> //#cgo LDFLAGS: -L${SRCDIR}/../deps/syslog/ssyslog-ng-3.7.1/install/lib
> -lsyslog-ng
> //#cgo LDFLAGS:
> -L${SRCDIR}/../deps/syslog/syslog-ng-3.7.1/install/lib/syslog-ng -ldbparser
> //#cgo pkg-config: eventlog
> //#cgo CFLAGS: -I/usr/include/glib-2.0
> //#cgo CFLAGS: -I/usr/lib/x86_64-linux-gnu/glib-2.0/include
> //#include <stdlib.h>
> //void callback(char *key, char *value, size_t value_len, int mapid);//
> Forward Declaration.
> //#include "syslog-node1.h"
>
> 3)Could other tools - that understands elf - read that library ?
>
> >>I don't think so there is anything else reading that library apart from
> my CGO project.
>
> 4)One thing I noticed is when I try to compile the CGO project on a Ubuntu
> 18.04 machine the compilation goes fine.
> But when I try to compile the project on a Ubuntu 14.04 it is failing with
> the error mentioned in earlier mail.
>
> Do I have to compile syslog-ng against Ubuntu 14.04  and then try
> compiling my CGO project on Ubuntu 14.04 ?
> Since I compiled syslog-ng on Ubuntu 16.04 and then compiling my CGO
> project on Ubuntu 14.04, can this be the cause of the issue ?Just a
> thought, I am not sure if my understanding is correct.
>
> Thanks,
> Nitish
>
>
> On Wed, Feb 5, 2020 at 5:40 PM Peter Kokai (pkokai) <
> Peter.Kokai at oneidentity.com> wrote:
>
>> Hello,
>>
>> Have you verified if both file is the same (no transport issue) ? (check
>> sha256sum)
>> Could other tools - that understands elf - read that library ? (readelf
>> -a syslog..so)
>>
>> What was the exact linker option it was called with ? (you can ask
>> gcc/clang to emit such information with -### option)
>>
>> --
>> Kokan
>> On Wed, Feb 05, 2020 at 05:27:09PM +0530, Nitish Saboo wrote:
>> > CAUTION: This email originated from outside of the organization. Do not
>> follow guidance, click links, or open attachments unless you recognize the
>> sender and know the content is safe.
>> >
>> > Hi,
>> >
>> > I compiled the syslog-ng-3.7.1.tar.gz on a Ubuntu 16.04 machine .The
>> syslog-ng got compiled successfully on this machine.
>> >
>> > ----------------------------------------------------------------------
>> > Libraries have been installed in:
>> >    /home/anassa/nitish/syslog-ng-3.7.1/install/lib
>> >
>> > If you ever happen to want to link against installed libraries
>> > in a given directory, LIBDIR, you must either use libtool, and
>> > specify the full pathname of the library, or use the `-LLIBDIR'
>> > flag during linking and do at least one of the following:
>> >    - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
>> >      during execution
>> >    - add LIBDIR to the `LD_RUN_PATH' environment variable
>> >      during linking
>> >    - use the `-Wl,-rpath -Wl,LIBDIR' linker flag
>> >    - have your system administrator add LIBDIR to `/etc/ld.so.conf'
>> >
>> > See any operating system documentation about shared libraries for
>> > more information, such as the ld(1) and ld.so(8) manual pages.
>> > ----------------------------------------------------------------------
>> >
>> >
>> >
>> >
>> --------------------------------------------------------------------Libraries
>> have been installed in:
>> >    /home/anassa/nitish/syslog-ng-3.7.1/install/lib/syslog-ng
>> >
>> > If you ever happen to want to link against installed libraries
>> > in a given directory, LIBDIR, you must either use libtool, and
>> > specify the full pathname of the library, or use the `-LLIBDIR'
>> > flag during linking and do at least one of the following:
>> >    - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
>> >      during execution
>> >    - add LIBDIR to the `LD_RUN_PATH' environment variable
>> >      during linking
>> >    - use the `-Wl,-rpath -Wl,LIBDIR' linker flag
>> >    - have your system administrator add LIBDIR to `/etc/ld.so.conf'
>> >
>> > See any operating system documentation about shared libraries for
>> > more information, such as the ld(1) and ld.so(8) manual pages.
>> > ----------------------------------------------------------------------
>> >
>> >
>> > -Ubuntu:~/nitish/syslog-ng-3.7.1/install/lib$ gcc --version
>> > gcc (Ubuntu 5.4.0-6ubuntu1~16.04.11) 5.4.0 20160609
>> > Copyright (C) 2015 Free Software Foundation, Inc.
>> > This is free software; see the source for copying conditions.  There is
>> NO
>> > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
>> PURPOSE.
>> >
>> >
>> > My project got compiled in 'syslog-ng-3.7.1' folder on machine Ubuntu
>> 16.04.
>> >
>> > I have a different machine  with Ubuntu 14.04.I copied
>> 'syslog-ng-3.7.1' folder on this machine (Ubuntu 14.04). In this machine I
>> tried compiling my CGO project (Go and C) where my Go code is calling the C
>> wrapper code that internally call syslog-ng api's.
>> > I have defined all the CFLAGS and LDFLAGS in my Go code for the
>> run-timne dependencies. At the time of compilation it is failing with the
>> following error:
>> >
>> > Error
>> > =====
>> >
>> > lib/../deps/syslog/syslog-ng-3.7.1/install/lib/libsyslog-ng.so: file
>> not recognized: File truncated
>> > [11:36:44][shellscript] collect2: error: ld returned 1 exit status
>> > [11:36:44][shellscript] make: *** [main] Error 2
>> >
>> >
>> > The file 'libsyslog-ng.so' is present  at the  location
>> 'lib/../deps/syslog/syslog-ng-3.7.1/install/lib/':
>> >
>> > total 3152
>> > drwxrwxr-x 2 anassa anassa    4096 Feb  5 16:47 pkgconfig
>> > -rwxr-xr-x 1 anassa anassa 3208176 Feb  5 16:47
>> libsyslog-ng-3.7.so.0.0.0
>> > lrwxrwxrwx 1 anassa anassa      25 Feb  5 16:47 libsyslog-ng.so ->
>> libsyslog-ng-3.7.so.0.0.0
>> > -rwxr-xr-x 1 anassa anassa    1155 Feb  5 16:47 libsyslog-ng.la<
>> https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Flibsyslog-ng.la&data=02%7C01%7CPeter.Kokai%40oneidentity.com%7C0a9ab8afa67a4c47891908d7aa3291d6%7C91c369b51c9e439c989c1867ec606603%7C0%7C0%7C637165006496910785&sdata=%2BCP70RsY0LJmfH0K%2FEy5bhxD6HKgzNU4FEdiMCaccTI%3D&reserved=0
>> >
>> > lrwxrwxrwx 1 anassa anassa      25 Feb  5 16:47 libsyslog-ng-3.7.so.0
>> -> libsyslog-ng-3.7.so.0.0.0
>> > drwxrwxr-x 3 anassa anassa    4096 Feb  5 16:47 python2.7
>> > drwxrwxr-x 3 anassa anassa    4096 Feb  5 16:47 syslog-ng
>> >
>> > Can someone please guide me what could be the possible reasons to get
>> this error ? What am I missing here ?
>> >
>> >
>> > Thanks,
>> > Nitish
>>
>>
>> >
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>> >
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