FAQ conflict

2010-05-13 Thread Todd Rinaldo 
Your FAQ at the below URLS conflicts as to which autoconf should be used. one 
says 2.13 th other says 2.64. 2.65 is currently available.

http://gcc.gnu.org/faq.html#generated_files

http://gcc.gnu.org/install/prerequisites.html

prerequisites page

2010-05-18 Thread Todd Rinaldo 
I'm writing to report a discrepancy in 
http://gcc.gnu.org/install/prerequisites.html

I just discovered that if gmp is boot strapped during gcc build and an older m4 
exists, when gmp calls flex, it will fail during configure with:

checking for flex... flex
checking lex output file root... configure: error: cannot find output from 
flex; giving up

I mention this because the prerequisites page specifies m4 as optional if 
you're just building gcc. m4 appears to have a minimal requirement if gmp is 
being boot strapped.

Re: m4 requirement (was: prerequisites page)

2010-07-13 Thread Todd Rinaldo 

On Jul 10, 2010, at 7:07 PM, Gerald Pfeifer wrote:

> Todd,
> 
> On Wed, 19 May 2010, Todd Rinaldo wrote:
>> I'm writing to report a discrepancy in 
>> http://gcc.gnu.org/install/prerequisites.html
>> 
>> I just discovered that if gmp is boot strapped during gcc build and an 
>> older m4 exists, when gmp calls flex, it will fail during configure 
>> with:
>> 
>> checking for flex... flex
>> checking lex output file root... configure: error: cannot find output from 
>> flex; giving up
>> 
>> I mention this because the prerequisites page specifies m4 as optional 
>> if you're just building gcc. m4 appears to have a minimal requirement if 
>> gmp is being boot strapped.
> 
> thanks for the report, Todd.  You mention m4, yet the output you show
> is around flex?  
> 
> I can update our documentation, but need more details and confirmation
> by the respective GCC maintainers on what exactly to adjust.
> 

Gerald, thanks for the reply. When it fell over, I dug into the config.log file 
and was able to determine that it was a bad m4 macro. I can try to re-produce 
it to get you more details, but it may take me a while to get to it. Do you 
want me to do this?

Thanks,
Todd