[LLVMdev] [cfe-dev] Compiler flag to toggle NX (NonExec) bit

[Philip Reames]

On 05/16/2014 10:33 AM, Reid Kleckner wrote:
> On Fri, May 16, 2014 at 5:21 AM, Joerg Sonnenberger 
> <joerg at britannica.bec.de <mailto:joerg at britannica.bec.de>> wrote:
>
>     On Thu, May 15, 2014 at 11:22:46PM -0400, Kangkook Jee wrote:
>     > Hi all,
>     >
>     > I'm trying to find Clang's option equivalent to GNU binutil's
>     "-z execstack or
>     > -z noexecstack"  which is to toggle NX bit of output binary.
>      For instance,
>     > something similar to the following.
>
>     -Wl,-z,execstack as you should be using for GCC as well.
>
>
> Should Clang recognize -z as a linker flag?  I've also tripped on this 
> before.
I'm not necessarily a fan of bug per bug compatibility with GCC here, 
but recognizing these cases and emitting a "did you mean X?" warning 
might be helpful.  I've also been bitten by this recently.

Philip
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