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From:Kaplenko Vitaliy Date:July 19 2011 12:24pm
Subject:Re: undefined symbol: _ZN7mysqlpp10ConnectionD1Ev
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Jonathan Wakely wrote:
> On 19 July 2011 12:29, Kaplenko Vitaliy wrote:
>    
>> If after that run command:
>> # httpd --help
>> httpd: Syntax error on line 204 of /etc/httpd/conf/httpd.conf: Cannot load
>> /etc/httpd/modules/mod_helloworld.so into server:
>> /etc/httpd/modules/mod_helloworld.so: undefined symbol:
>> _ZN7mysqlpp10ConnectionD1Ev
>>
>>
>> mod_helloworld.c is an Apache Module, a simple content generator.
>> It was published on page 133 in
>> The Apache Modules Book: Application Development with Apache
>> by Nick Kew
>> Publisher: Prentice Hall
>> Pub Date: January 26, 2007
>> Print ISBN-10: 0-13-240967-4
>> Print ISBN-13: 978-0-13-240967-4
>> Pages: 592
>>
>> In the mod_helloworld.c Rows 7 and 23 were added for compile
>> .c and .cpp files together.
>>
>> Help me solve this problem, please.
>>      
> You haven't linked to the mysql++ library
>
> Add -lmysqlpp to the link command for mod_helloworld.so
>
>    
I add -lmysqlpp to the link command for mod_helloworld.so:
# g++ -shared -o -lmysqlpp mod_helloworld.so mod_helloworld.o 
mod_contconnect.o

But after that ldd report:
# ldd /usr/lib64/httpd/modules/mod_helloworld.so
         linux-vdso.so.1 =>  (0x00007fffe7f5c000)
         libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00007f82c03d7000)
         libm.so.6 => /lib64/libm.so.6 (0x00007f82c0153000)
         libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f82bff3d000)
         libc.so.6 => /lib64/libc.so.6 (0x00007f82bfba4000)
         /lib64/ld-linux-x86-64.so.2 (0x0000003048e00000)

Thread
undefined symbol: _ZN7mysqlpp10ConnectionD1EvKaplenko Vitaliy19 Jul
  • Re: undefined symbol: _ZN7mysqlpp10ConnectionD1EvMichael Radzewitz19 Jul
    • Re: undefined symbol: _ZN7mysqlpp10ConnectionD1EvJonathan Wakely19 Jul
      • Re: undefined symbol: _ZN7mysqlpp10ConnectionD1EvMichael Radzewitz19 Jul
  • Re: undefined symbol: _ZN7mysqlpp10ConnectionD1EvJonathan Wakely19 Jul
    • Re: undefined symbol: _ZN7mysqlpp10ConnectionD1EvKaplenko Vitaliy19 Jul
      • Re: undefined symbol: _ZN7mysqlpp10ConnectionD1EvJonathan Wakely19 Jul
        • Re: undefined symbol: _ZN7mysqlpp10ConnectionD1EvKaplenko Vitaliy19 Jul