Re: Makefiles and system architectures

[Nicola Pero]

> Hi Nicola,
> 
> Just a question to make sure that what I am thinking is correct:
> 
> When I build gnustep-make with the -march and -mcpu switches, are these 
> then used for EVERY subproject? Meaning all of GNUstep and Apps is build 
> with these switches?

I'm not sure I understand exactly what you mean with your question :-),
but I understand you're trying to set flags when you compile gnustep-make
hoping those would be used in all gnustep projects being compiled, and I
don't seem to remember an easy way of doing it.

You can set CFLAGS when configuring gnustep-make, but no, they don't get
stored in the make system for later use, and they are not used later.

There are quite a few things which could be done -

 - you could set the flags when compiling gnustep-base and have them end 
up in base.make from where they should be used whenever gnustep-base is 
used

 - if you are talking of target-specific flags which would be of general
use, they could be added in target.make to the specific target, then
gnustep-make automatically would use them for that target.  I don't think
-march and -mcpu are the case though, as probably GCC's default
-march/-mcpu should be left as default (if the default is not good, GCC
itself should be fixed)

 - if you're hacking your own personal machine to experiment with
something, you can easily add the flags by manually adding them in
$(GNUSTEP_MAKEFILES)/config.make

 - if it's a common requirements that people might want to set a few very
custom flags (say, optimization ones ?) when configuring gnustep-make so
that they are used whenever gnustep-make is used to compile, we could
modify gnustep-make's ./configure to support an option of that sort

Let me know what you think.