Re: gcc 3.2 limits.h from crtstuff.c

[David Meggy <dmeggy@techsol.ca>]

I'm pretty sure there is something wrong with isystem, #include_next.

According to the gcc manual
-isystem dir
    Search dir for header files, after all directories specified by -I
but before the standard system directories. Mark it as a system
directory, so that it gets the same special treatment as is applied to
the standard system directories.

Which is correct so #include_next should get the C-lib version.  Which I
know it finds normally because the following program works.

#include <limits.h>
int main() { return 0; }

and when I enter a #warning statement inside the c-lib limits.h it finds
it. eg.
~/tmp$ arm-linux-gcc Dave.c
In file included from Dave.c:1:
/home/david/techsol/arm-cross-v0.9/include/limits.h:22:2: warning:
#warning Dave:C-lib limits.h 


Dave


On Tue, 2002-09-03 at 01:43, Rupert Wood wrote:
> Dave Meggy wrote:
> 
> > I think there is something wrong with the way it finds includes.
> 
> I'm not on my usual system so I can't verify this, but from memory:
> 
> > According to my inserted #warnings ${my cross env}/include/limits.h
> > is never called.
> 
> I've had disagreements in the past about where things should live, but I
> think the headers should be in
> 
>    $(my cross env)/arm-linux/sys-include
> 
> and libraries
> 
>    $(my cross env)/arm-linux/lib
> 
> These are the paths used by GCC's configure's --with-headers and
> --with-libs. Kai on the crossgcc list will tell you that the headers
> should actually go in
> 
>    $(my cross env)/arm-linux/include
> 
> but I think he's wrong :-)
> 
> > and the compiler I'm trying to build was configured like this
> > {gcc_source_path}/configure --target=arm-linux --host=arm-linux \
> > --build=i386-pc-linux-gnu --prefix=${my cross runtime env} \
> > --enable-languages=c --disable-multilib \
> > --disable-threads --disable-shared
> 
> Since you're neither specifying --with-headers or --with-libs (which is
> fine if they're already in place) you need to specify --without-newlib.
> 
> Hope that helps,
> Rup.
> 
> 
-- 
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     David Meggy
     Engineering

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