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Re: [PATCH] Add -nostdinc to TARGET_CFLAGS


From: Robert Millan
Subject: Re: [PATCH] Add -nostdinc to TARGET_CFLAGS
Date: Sun, 15 Nov 2009 12:12:51 +0100
User-agent: Mutt/1.5.18 (2008-05-17)

On Sun, Nov 15, 2009 at 12:04:58PM +0100, Robert Millan wrote:
> On Sat, Nov 14, 2009 at 10:16:45PM +0100, Felix Zielcke wrote:
> > Am Mittwoch, den 04.11.2009, 11:48 +0100 schrieb Felix Zielcke:
> > > 
> > > Thanks to the hint from rubisher I looked now at Linux Makefiles.
> > > They use this:
> > > 
> > > NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) 
> > > -print-file-name=include)
> > > 
> > > # ls $(gcc-4.4 -print-file-name=include)/stdarg.h
> > > /usr/lib/gcc/x86_64-linux-gnu/4.4.2/include/stdarg.h
> > > 
> > 
> > Robert?
> > IMO this makes at least more sense then what we have now
> > and I just tested this now with and without a seperate build directory
> > with experimental branch and it works
> > TARGET_CPPFLAGS = @TARGET_CPPFLAGS@ -nostdinc -isystem $(shell $(CC)
> > -print-file-name=include) -I$(srcdir)/include -I$(builddir)
> > -I$(builddir)/include -Wall -W
> 
> What's the advantage?

Ah, I remember.  There was a problem with stddef.h right?

So you propose something like this:

-TARGET_CPPFLAGS = @TARGET_CPPFLAGS@ -isystem=$(srcdir)/include 
-I$(srcdir)/include -I$(builddir) -I$(builddir)/include \
+TARGET_CPPFLAGS = @TARGET_CPPFLAGS@ -isystem=$(shell $(CC) 
-print-file-name=include) -I$(srcdir)/include -I$(builddir) 
-I$(builddir)/include \

  ?

-- 
Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."




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