clang++ cannot execute binary file: Exec format error

[Cary Cherng]

As far as I can tell using

nacl_sdk/pepper_43/toolchain/linux_pnacl/bin/pnacl-clang++

eventually invokes 

nacl_sdk/pepper_43/toolchain/linux_pnacl/bin/clang

When I try to build the hello project I get the following error from make. Is there something obvious that I haven't done?

~/nacl_sdk/pepper_43/toolchain/linux_pnacl/bin $ uname -a

Linux ccherng-NC696AA-ABA-SR5710Y 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:30:01 UTC 2014 i686 athlon i686 GNU/Linux

~/nacl_sdk/pepper_43/toolchain/linux_pnacl/bin $ ./clang

-bash: ./clang: cannot execute binary file: Exec format error

~/nacl_sdk/pepper_43/toolchain/linux_pnacl/bin $ file ./clang

./clang: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=bba62e8f19a10f7c4b694dfa68b939c3116efcdd, stripped

~/nacl_sdk/pepper_43/getting_started/part1 $ make

/home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/bin/pnacl-clang++ -o hello_tutorial.bc hello_tutorial.cc -O2 -I/home/ccherng/nacl_sdk/pepper_43/include -L/home/ccherng/nacl_sdk/pepper_43/lib/pnacl/Release -lppapi_cpp -lppapi

hello world/home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/bin/pnacl-clang++

[Errno 8] Exec format error

Command was: /home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/bin/clang \

    --driver-mode=g++ \

    -emit-llvm \

    -c -O2 \

    -fno-vectorize \

    -fno-slp-vectorize \

    -fno-common \

    -pthread \

    -nostdinc \

    -target \

    le32-unknown-nacl \

    -I/home/ccherng/nacl_sdk/pepper_43/include \

    -isystem \

    /home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/le32-nacl/usr/include \

    -isystem \

    /home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/lib/clang/3.6.0/include \

    -isystem \

    /home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/le32-nacl/include/c++/v1 \

    -isystem \

    /home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/le32-nacl/include/c++/v1/arm-none-linux-gnueabi \

    -isystem \

    /home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/le32-nacl/include/c++/v1/backward \

    -isystem \

    /home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/le32-nacl/include \

    -isystem \

    /home/ccherng/nacl_sdk/pepper_43/toolchain/linux_pnacl/sdk/include \

    -xc++ \

    hello_tutorial.cc \

    -o /home/ccherng/nacl_sdk/pepper_43/getting_started/part1/hello_tutorial.bc---hello_tutorial.cc---.po

make: *** [hello_tutorial.bc] Error 1

[Sam Clegg]

Hi Cary,

It looks like you might be lacking 64-bit support in your kernel.
The clang compiler we ship in the linux SDK requires a 64-bit kernel
I'm afraid.

cheers,
sam

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