[syslog-ng] Getting error : .../libsyslog-ng.so: file not recognized: File truncated
Peter Kokai (pkokai)
Peter.Kokai at oneidentity.com
Fri Feb 7 13:26:29 UTC 2020
Hello,
> [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
According to your linker the lib/../deps/syslog/syslog-ng-3.7.1/install/lib/libsyslog-ng.so is not a binary format it can recognise.
It tries so hard to find the correct one[1]: elf (usually on linx), Mac-O, Coff, XCoff
BTW I would not build one project on two different machine (it should just compile fine on either one of them).
Possible ideas:
1) DO check with other tools if your .so is sane: readelf, objdump, nm or whatever
2) Check if symlinks does not screw up your build (by default libsyslog-ng.so is just a symlink)
3) Somehow convince your GO compiler to either list the exact GCC steps it does (with linker options etc) and not your CFLAGS, the exact commands GO compiler calls gcc with (internet can help here)
4) Provide the socurce/build system and/or binary
[1] https://github.com/gcc-mirror/gcc/blob/3c7a03bc360c3511fae3747a71e579e9fd0824f9/libiberty/simple-object.c#L166-L186
--
Kokan
On Fri, Feb 07, 2020 at 05:38:51PM +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 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<mailto: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<mailto: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%7Cf65c300855534b9c1de408d7abc68835%7C91c369b51c9e439c989c1867ec606603%7C0%7C0%7C637166741497489141&sdata=%2Fi8zLEZKTtFsQ8JpRUwstQTuJOwZvsA%2FG85MrsQiwvE%3D&reserved=0><https://nam05.safelinks.protection.outlook.com/?url=http%3A%2F%2Flibsyslog-ng.la&data=02%7C01%7Cpeter.kokai%40oneidentity.com%7Cf65c300855534b9c1de408d7abc68835%7C91c369b51c9e439c989c1867ec606603%7C0%7C0%7C637166741497489141&sdata=%2Fi8zLEZKTtFsQ8JpRUwstQTuJOwZvsA%2FG85MrsQiwvE%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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