Ubuntu – How to run 32-bit app in Ubuntu 64-bit

32-bit64-bit

I installed Ubuntu 14.04 and the current Android development SDK, which contains 32-bit executables. I found that I cannot run those 32-bit binaries. Trying to start them from bash gives me an error:

$ ./adb
bash: ./adb: No such file or directory

It is there though:

$ ls -al ./adb
-rwxrwxrwx 1 thomas thomas 1231255 Jan 17 13:31 ./adb
$ file ./adb
./adb: ELF 32-bit LSB  executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.8, not stripped. Same symptom for all the other 32-bit tools in the Android SDK. 

In olden days one could just install 32-bit libraries on 64-bit Ubuntu to get 32-bit support, but that does not seem to work anymore.

How do I run 32-bit apps on a 64-bit Ubuntu 14.04?

Best Answer

  • To run a 32-bit executable file on a 64-bit multi-architecture Ubuntu system, you have to add the i386 architecture and install the three library packages libc6:i386, libncurses5:i386, and libstdc++6:i386:

    sudo dpkg --add-architecture i386
    

    Or if you are using UbuntuĀ 12.04 LTS (Precise Pangolin) or below, use this:

    echo "foreign-architecture i386" > /etc/dpkg/dpkg.cfg.d/multiarch
    

    Then:

    sudo apt-get update
    sudo apt-get install libc6:i386 libncurses5:i386 libstdc++6:i386
    

    If fails, do also

    sudo apt-get install multiarch-support
    

    After these steps, you should be able to run the 32-bit application:

    ./example32bitprogram
    
  • Related Question