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Subject: Re: fio-f1480f9: AIX 6.1 build KO against gcc function overlap
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From: Jens Axboe <axboe@kernel.dk>
Message-ID: <56840B75.5070002@kernel.dk>
Date: Wed, 30 Dec 2015 09:51:01 -0700
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In-Reply-To: <56840B48.4040301@kernel.dk>
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To: Thierry BERTAUD <tbertaud@conforama.fr>, "fio@vger.kernel.org" <fio@vger.kernel.org>
List-ID: <fio@vger.kernel.org>

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On 12/30/2015 09:50 AM, Jens Axboe wrote:
> On 12/30/2015 09:38 AM, Jens Axboe wrote:
>> so that logic does look correct. Maybe the configure check for the error
>> return of lex -o isn't working. Do you have CONFIG_LEX_USE_O in your
>> config-host.mak, if you run configure --enable-lex?
>
> If the latter is the case, then the attached patch should hopefully
> work. That'll force NOT using -o for AIX always, if lex is enabled.

Gah, missed a 'fi'. New one attached.


-- 
Jens Axboe


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diff --git a/configure b/configure
index e92e96b879b5..517668233fc7 100755
--- a/configure
+++ b/configure
@@ -247,6 +247,8 @@ AIX)
   # Unless explicitly enabled, turn off lex.
   if test -z "$disable_lex" ; then
     disable_lex="yes"
+  else
+    force_no_lex_o="yes"
   fi
   ;;
 Darwin)
@@ -1505,6 +1507,9 @@ fi
 
 # Check if lex fails using -o
 if test "$arith" = "yes" ; then
+if test "$force_no_lex_o" = "yes" ; then
+  lex_use_o="no"
+else
 $LEX -o lex.yy.c exp/expression-parser.l 2> /dev/null
 if test "$?" = "0" ; then
   lex_use_o="yes"
@@ -1512,6 +1517,7 @@ else
   lex_use_o="no"
 fi
 fi
+fi
 
 echo "lex/yacc for arithmetic       $arith"
 

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