[CMake] Specify 32-bit compilation to Clang

[Nils Gladitz]

On 01/20/2015 04:48 PM, Robert Dailey wrote:
> On Mon, Jan 19, 2015 at 2:12 PM, Nils Gladitz <nilsgladitz at gmail.com> wrote:
>> On 19.01.2015 21:08, Robert Dailey wrote:
>>>
>>> I have done this and it fails while linking the test program during
>>> configuration:
>>>
>>> /usr/bin/ld: cannot find crtbegin.o: no such file or directory
>>> /usr/bin/ld: cannot find -lgcc
>>> /usr/bin/ld: cannot find -lgcc_s
>>>
>>> Any ideas?
>>>
>>
>> Try installing the g++-multilib package.
>
> Installed this as you instructed, deleted CMakeCache.txt and re-ran
> generation. Got the errors below:
>


>
>    /usr/bin/ld: skipping incompatible
>    /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/libgcc.a when searching for -lgcc

 From the diagnostic it looks like clang shares gcc 4.8's libraries.

Is the system wide default gcc 4.8 as well?
e.g. does "gcc --version" report 4.8.x?

If it isn't installing g++-4.8-multilib might help (If 4.8 is the 
default g++-multilib will already have installed it).

Nils