Build failure on ARM64 with Debian Jessie

Hi there,

I searched there have two similar tickets (https://github.com/iovisor/bcc/issues/1434 and https://github.com/iovisor/bcc/issues/1375) for building failure, but they are not exactly same with behavior I observed the build failure.

The kernel is the latest mainline Linux kernel (4.15-rc5) and the debian is for ARM64 releasing, GCC is 4.9.2.

Please note, I install all dependency libs with "apt-get" command but it misses luajit, so I manually download the code and build/install it from: http://luajit.org/download/LuaJIT-2.1.0-beta3.tar.gz, this beta version has supported ARM64 yet.

I use below command to build bcc:

```
root@linaro-developer:~/bcc/build# cmake .. -DCMAKE_INSTALL_PREFIX=/usr
root@linaro-developer:~/bcc/build# make
```

So it always to wait for compiling the file src/cc/frontends/clang/CMakeFiles/clang_frontend.dir/b_frontend_action.cc.o, the detailed log as below:

```
root@linaro-developer:~/bcc/build# cmake .. -DCMAKE_INSTALL_PREFIX=/usr
-- Latest recognized Git tag is v0.5.0
-- Git HEAD is 46994dd75e82f5d785af8a6ebd92f0e859526668
-- Revision is 0.5.0-46994dd7
-- Found LLVM: /usr/lib/llvm-3.7/include 3.7.0
-- Using static-libstdc++
-- Configuring done
-- Generating done
-- Build files have been written to: /root/bcc/build
root@linaro-developer:~/bcc/build# make
[ 8%] Built target bcc-loader-static
[ 9%] Building CXX object src/cc/frontends/clang/CMakeFiles/clang_frontend.dir/b_frontend_action.cc.o
```

There have no any RCU stall or kernel panic, so this should not the same issue with https://github.com/iovisor/bcc/issues/1375.

Could you give suggestion so I can move forward for enabling bcc, thanks in advance.