RE: configuring in-tree gmp/mpfr with "none"?

[Jay <jayk123@hotmail.com>]

> Because at some point, no released version worked on intel macs.

Long since passed and can be removed?
Or only do it on those machines??
  Granted, the Python-wrapping-build I'm doing ought to work as well on Intel Macs as anywhere else.

Here is what ends up happening:

 #include  
 #include  

 int main() 
 { 
    signal(SIGPIPE, SIG_IGN);   << Python does like this 
    putenv("M4=foo");    << gmp/configure does like this  
    system("flex 1.l");    <<  gmp/configure does like this  
    return 0; 
 }

Without ignoring sigpipe, flex dies in filter_tee_header reading the output of a failed exec.
Ignoring the signal under a Python wrapper however, it continues on
and deletes the output, causing gmp/configure to fail because it is looking
for the output.

gmp/configure is where the blame really lies, but if gcc configured gmp "normally",
this wouldn't occur. Or, is cpu=none not so abnormal? Just that I hadn't seen it?
(Everything new and normal is initially new and abnormal, of course.)

 - Jay

> Date: Thu, 31 Jul 2008 15:53:43 +0200
> From: bonzini@gnu.org
> To: jayk123@hotmail.com
> CC: pinskia@gmail.com; gcc@gcc.gnu.org
> Subject: Re: configuring in-tree gmp/mpfr with "none"?
>
> Jay wrote:
>> Andrew, Can you explain more why?
>
> Because at some point, no released version worked on intel macs.
>
>> And then gmp/configure runs flex.
>> And then sometimes?always flex tries to run getenv("M4") || "m4".
>
> Yes, Flex uses m4.
>
>> gmp/configure probably should not be setting M4
>
> Yes, I think that setting M4=m4-not-needed should be done only for
> debugging purposes. Otherwise, GMP should always look for m4 in its
> configure script, and set it to a valid value in the makefile.
>
> Paolo