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Re: [PATCH] autoconf: Create LIBOBJ_DIR in $top_builddir.


From: Michael Haubenwallner
Subject: Re: [PATCH] autoconf: Create LIBOBJ_DIR in $top_builddir.
Date: Fri, 21 Jul 2017 12:30:05 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

Problem forwarded to https://debbugs.gnu.org/cgi/bugreport.cgi?bug=27781
/haubi/

On 07/20/2017 03:36 PM, Nick Bowler wrote:
> Hello,
> 
> On 2017-07-20, Michael Haubenwallner
> <address@hidden> wrote:
>> * lib/autoconf/general.m4 (AC_CONFIG_LIBOBJ_DIR): Have config.status
>> create $top_builddir/LIBOBJ_DIR by INIT-CMDS, to support out of source
>> builds even when nothing else does create $top_builddir/LIBOBJ_DIR.
>> Based on discussion in https://github.com/westes/flex/issues/244.
>> ---
>>  lib/autoconf/general.m4 | 4 +++-
>>  1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
>> index f783404..4b152df 100644
>> --- a/lib/autoconf/general.m4
>> +++ b/lib/autoconf/general.m4
>> @@ -3014,8 +3014,10 @@ AC_DEFUN([AC_CHECK_DECLS_ONCE],
>>  # AC_CONFIG_LIBOBJ_DIR(DIRNAME)
>>  # -----------------------------
>>  # Announce LIBOBJ replacement files are in $top_srcdir/DIRNAME.
>> +# Creating $top_builddir/DIRNAME is for out of source builds.
>>  AC_DEFUN_ONCE([AC_CONFIG_LIBOBJ_DIR],
>> -[m4_divert_text([DEFAULTS], [ac_config_libobj_dir=$1])])
>> +[m4_divert_text([DEFAULTS], [ac_config_libobj_dir=$1])dnl
>> +AC_CONFIG_COMMANDS(,,[\$MKDIR_P "$ac_config_libobj_dir"])])
> 
> This is probably a good idea in principle, but the fix should probably
> be done in Automake, since the actual failure is really an Automake
> issue.
> 
> I suggest that Automake should simply create all the build directories
> it normally would regardless of whether or not dependency tracking is
> enabled.
> 
> Cheers,
>   Nick
> 



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