On 12/30/2015 01:36 AM, Thierry BERTAUD wrote:
Jens,
Unless I botched it, it should disable lex on AIX now, unless you
explicitly attempt to enable with --enable-lex.
I built against fio-de26b82 and now lex its disable by default. Tha'ts OK (cf full output below).
Concerning error with --enable-lex, i think is due that option '-o' is not valid so lex doon't generate the file leyx.yy.c => don't find it after.
---
MTD no
0: Warning: 1285-300 The o flag is not valid.
0: Error: 1285-331 Cannot read input file lex.yy.c
lex/yacc for arithmetic yes
---
If i read configure:
+1505
+1506 # Check if lex fails using -o
+1507 if test "$arith" = "yes" ; then
+1508 $LEX -o lex.yy.c exp/expression-parser.l 2> /dev/null
+1509 if test "$?" = "0" ; then
+1510 lex_use_o="yes"
+1511 else
+1512 lex_use_o="no"
+1513 fi
+1514 fi
+1515
+1516 echo "lex/yacc for arithmetic $arith"
Could you update test condition, if OS is AIX to use "less exp/expression-parser.l" and other case "-o lex.yy.c exp/expression-parser.l"
# lex exp/expression-parser.l; echo $?;ls -l lex.yy.c
0
-rw-r--r-- 1 root staff 48081 Dec 30 09:34 lex.yy.c
But that's what the lex_use_o should control. If lex is enabled, we'll
output CONFIG_LEX_USE_O=y if lex should use -o and nothing if it should
not. If CONFIG_LEX_USE_O is in config-host.mak, then the Makefile target
will use -o. If not, then it should not. But maybe I screwed it up.
Testing here:
axboe@xps13:/home/axboe/git/fio $ grep USE_O config-host.mak
CONFIG_LEX_USE_O=y
axboe@xps13:/home/axboe/git/fio $ make V=1 lex.yy.c
lex -o lex.yy.c exp/expression-parser.l
which looks correct. I'll manually kill CONFIG_LEX_USE_O=y from
config-host.mak, and retry:
axboe@xps13:/home/axboe/git/fio $ rm lex.yy.c
axboe@xps13:/home/axboe/git/fio $ grep USE_O config-host.mak
axboe@xps13:/home/axboe/git/fio $ make V=1 lex.yy.c
lex exp/expression-parser.l
axboe@xps13:/home/axboe/git/fio $ ls -al lex.yy.c
-rw-r--r-- 1 axboe axboe 51991 Dec 30 09:37 lex.yy.c
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?
--
Jens Axboe
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