[cfe-commits] r67418 - in /cfe/trunk: include/clang/Driver/HostInfo.h lib/Driver/Driver.cpp lib/Driver/HostInfo.cpp test/Driver/phases.c tools/ccc/ccclib/Driver.py tools/ccc/ccclib/HostInfo.py

[Chris Lattner]

On Mar 21, 2009, at 11:07 AM, Daniel Dunbar wrote:

>
> On Sat, Mar 21, 2009 at 10:48 AM, Chris Lattner <clattner at apple.com>  
> wrote:
> On Mar 21, 2009, at 8:47 AM, Daniel Dunbar wrote:
>> I don't understand this comment. On Darwin '<driver> foo.s' should  
>> run the preprocessor, then assemble. It doesn't really have  
>> anything to do with -E (although, due to this behavior, -E on a .s  
>> file on Darwin runs the preprocessor, and elsewhere will warn that  
>> the input file is unused).
>
> Wow, that is really weird and surprising.  Do you know if this is  
> documented anywhere?
>
> Indeed. And unfortunate!
>
> It's not entirely weird, though. This matches the behavior with .S,  
> and I presume the historical reason Apple did this was coming from a  
> case insensitive file system. I don't believe it is document  
> anywhere, although the Apple as man page mentions it indirectly.
>
> See gcc.c, and search for "This is kind of lame". :)

Aha, ok.

-Chris
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