Fix ‘Not a Dynamic Executable’ Error in ldd

executablelibraries

I am a bit confused because I don't understand why it happens:
The last changes on the system that I remember were

  • installed g++5 for the old porject (removed already)
  • apt autoclean
  • removed ldconfig cache (guess this is the reason)

Now I can't launch some of the applications. Ldd tells me that it's “not a dynamic executable”

igor@Linbox:/lib/i386-linux-gnu$ ldd libssl.so.1.0.0 
    is not a dynamic executable

igor@Linbox:/lib/i386-linux-gnu$ ldd libselinux.so.1 
    is not a dynamic executable

igor@Linbox:/bin$ ldd dd 
    linux-vdso.so.1 =>  (0x00007fff0b380000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fb618c76000)
    /lib64/ld-linux-x86-64.so.2 (0x00007fb619269000)           

igor@Linbox:/lib/x86_64-linux-gnu$ ldd libc.so.6 
    /lib64/ld-linux-x86-64.so.2 (0x00007fcb44373000)
    linux-vdso.so.1 =>  (0x00007ffed8f33000)

Version: Linux Linbox 4.13.0-46-generic #51-Ubuntu SMP Tue Jun 12 12:36:29 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Also I checked that it is still present: 

// for running x32 applications on x64 system
sudo dpkg --add-architecture i386
sudo apt-get install libc6:i386 libncurses5:i386 libstdc++6:i386

Since removed ld.so.cache I did sudo ldconfig. There is new cache in /etc/ld.so.cache

Do I miss some library?

Added file checks: 

file /lib/i386-linux-gnu/libssl.so.1.0.0
/lib/i386-linux-gnu/libssl.so.1.0.0: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked, BuildID[sha1]=c1e3854cb8b86f1006dc391d23f102ea1184cf25, stripped
file /lib/i386-linux-gnu/libselinux.so.1
/lib/i386-linux-gnu/libselinux.so.1: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked, BuildID[sha1]=396cda857e41036061599a59c9f5fe62d7b50c4d, stripped
dpkg -S /lib/i386-linux-gnu/libssl.so.1.0.0
libssl1.0.0:i386: /lib/i386-linux-gnu/libssl.so.1.0.0
dpkg -S /lib/i386-linux-gnu/libselinux.so.1
libselinux1:i386: /lib/i386-linux-gnu/libselinux.so.1

Checked libx32 from comments:

igor@Linbox:/lib/i386-linux-gnu$ ls -l /libx32/ld*
-rwxr-xr-x 1 root root 155092 Jan 12  2018 /libx32/ld-2.26.so
lrwxrwxrwx 1 root root     10 Jan 12  2018 /libx32/ld-linux-x32.so.2 -> ld-2.26.so

Best Answer

Bug 1616609, ldd reports incorrectly "not a dynamic executable" when the executable's loader is not present , is probably the cause of the problem (as steeldriver suggested). Reinstall the libc6-x32 package to get it back. Do consider adding yourself to the bug, maybe it'll be fixed one day -- a patch is even suggested.

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