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From Ruediger Pluem <rpl...@apache.org>
Subject Re: event.c not building in some configurations
Date Fri, 26 Jan 2018 18:54:09 GMT


On 01/26/2018 04:57 PM, Yann Ylavic wrote:
> On Fri, Jan 26, 2018 at 4:11 PM, Ruediger Pluem <rpluem@apache.org> wrote:
>>
>> When I try to start httpd I get
>>
>> Cannot load modules/mod_mpm_event.so into server: /usr/src/apache/apache_trunk/modules/mod_mpm_event.so:
undefined
>> symbol: ap_queue_info_wait_for_idler
> 
> Why this one is particular (and not the other ap_queue*() functions)???

I don't know :-)

> 
>>
>> Index: server/mpm_fdqueue.c
>> ===================================================================
>> --- server/mpm_fdqueue.c        (revision 1822275)
>> +++ server/mpm_fdqueue.c        (working copy)
>> @@ -145,7 +145,7 @@
>>      }
>>  }
>>
>> -apr_status_t ap_queue_info_wait_for_idler(fd_queue_info_t *queue_info,
>> +AP_DECLARE(apr_status_t) ap_queue_info_wait_for_idler(fd_queue_info_t *queue_info,
>>                                            int *had_to_block)
>>  {
>>      apr_status_t rv;
>> Index: server/mpm_fdqueue.h MPM
>> ===================================================================
>> --- server/mpm_fdqueue.h        (revision 1822275)
>> +++ server/mpm_fdqueue.h        (working copy)
>> @@ -51,7 +51,7 @@
>>  apr_status_t ap_queue_info_set_idle(fd_queue_info_t *queue_info,
>>                                      apr_pool_t *pool_to_recycle);
>>  apr_status_t ap_queue_info_try_get_idler(fd_queue_info_t *queue_info);
>> -apr_status_t ap_queue_info_wait_for_idler(fd_queue_info_t *queue_info,
>> +AP_DECLARE(apr_status_t) ap_queue_info_wait_for_idler(fd_queue_info_t *queue_info,
>>                                            int *had_to_block);
>>  apr_uint32_t ap_queue_info_num_idlers(fd_queue_info_t *queue_info);
>>  apr_status_t ap_queue_info_term(fd_queue_info_t *queue_info);

I guess the above causes it to be added to the generated exports.c.
> 
> I really makes few sense to me, and smells something like
> "-Wl,--whole-archive,-lmain,--no-whole-archive" is missing at link
> time. Without it, libtool (or?) seems to have some heuristic to detect
> whether the functions are "really" used and does not include them
> otherwise.
> It bit me quite somes times already (not in httpd, though), and never
> really understood why...
> I'{d,ll} try this for testing...
> 
> 

Regards

RĂ¼diger

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