From: Jakub Narebski <jnareb@gmail.com>
Date: Wed, 05 Dec 2007 21:26:53 GMT
Subject: Re: [PATCH/RFC] autoconf: Add test for OLD_ICONV
Message-ID: <200712052226.53543.jnareb@gmail.com>
In-Reply-To: <7vtzmxortn.fsf@gitster.siamese.dyndns.org>

Junio C Hamano wrote:
> Jakub Narebski <jnareb@gmail.com> writes:
>
>> +AC_MSG_CHECKING([for old iconv()])
>> +AC_COMPILE_IFELSE(OLDICONVTEST_SRC,
>> +	[AC_MSG_RESULT([no])],
>> +	[AC_MSG_RESULT([yes])
>> +	OLD_ICONV=YesPlease])
>> +AC_SUBST(OLD_ICONV)
>>  
> 
> Which result does COMPILE_IFELSE give for non error warnings?  Ok, or
> Bad?

 - Macro: AC_COMPILE_IFELSE (INPUT, [ACTION-IF-FOUND],
          [ACTION-IF-NOT-FOUND])
     Run the compiler and compilation flags of the current language
     (*note Language Choice::) on the INPUT, run the shell commands
     ACTION-IF-TRUE on success, ACTION-IF-FALSE otherwise.  The INPUT
     can be made by `AC_LANG_PROGRAM' and friends.

And if I have checked correctly code which causes only warnings
returns Ok (in this case print 'no' after 'checking for old iconv()... '
and do not set OLD_ICONV, which means it will be unset).
-- 
Jakub Narebski
Poland