[LLVMdev] Size and performance figures for LLVM?

[Dominic Hamon]

Bill Wendling wrote:
> On May 14, 2008, at 4:46 AM, Dominic Hamon wrote:
>
>   
>> Bill Wendling wrote:
>>     
>>> On Tue, May 13, 2008 at 2:24 AM, Joachim Durchholz  
>>> <jo at durchholz.org> wrote:
>>>
>>>       
>>>> Am Dienstag, den 13.05.2008, 00:42 -0700 schrieb Bill Wendling:
>>>>
>>>>         
>>>>> Sorry to step into this in the middle of a thread, but what  
>>>>> exactly is
>>>>> LLVM's autoconf doing that "autoconf shouldn't do if properly set  
>>>>> up"?
>>>>>
>>>>>           
>>>> 1) Variables like CC, CXX, CFLAGS don't work properly when  
>>>> submitted via
>>>> the command line. The handling seems to be inconsistent, i.e. it  
>>>> seems
>>>> that parts of the toolchain receive these flags, others don't.
>>>> This is just a cosmetic problem, of course.
>>>>
>>>>         
>>> Is this specifying CC, CXX, and CFLAGS during the "configure" process
>>> or during the "make" process? The Makefiles seem to be using them  
>>> in a
>>> fairly consistent manner, as far as I can see. Which parts of the
>>> toolchain don't get the flags? Also, are we talking LLVM or LLVM-GCC?
>>>
>>>
>>>       
>> As an example: When running make from my own project that uses llvm  
>> (and
>> the llvm makefiles), I am unable to add extra include paths to the
>> build. It seems that they get into the makefiles ok, but not through  
>> to
>> the compiler itself.
>>
>>     
> What variable are you setting? Here's what the clang project uses in  
> its Makefiles
>
> CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include
>
> I *think* that specifying CPPFLAGS on the command line (like this
>
> 	$ make CPPFLAGS=-I/my/own/include/dir
>
> will replace the CPPFLAGS' initial value in the Makefiles.
>
>   
I'm trying:

    $ make CPPFLAGS += -I/some/dir

I see the -I/some/dir showing up in Compile.CXX and Compile.C when I 
make 'printvars', however the build fails as if the path is not in the 
command line. When I build with TOOL_VERBOSE=1, I see that it's not 
making it through to the comand line at all.

I had a dig through the Makefiles but couldn't see where it was falling 
out. I get the same results if I add CPPFLAGS += -I/some/dir to the 
Makefile directly.

Thanks
dominic