# Parameters not passed to/by extconf.rb?

**URL:** <https://www.ruby-forum.com/t/parameters-not-passed-to-by-extconf-rb/165481>\
**Category:** Ruby\
**Created:** [April 14, 2009, 12:48pm UTC](https://www.ruby-forum.com/t/parameters-not-passed-to-by-extconf-rb/165481 "2009-04-14T12:48:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![nocashvalue](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/eada6e/32.png) [@nocashvalue](https://www.ruby-forum.com/u/nocashvalue)\
**Post date:** [April 14, 2009, 12:48pm UTC](https://www.ruby-forum.com/t/parameters-not-passed-to-by-extconf-rb/165481/1 "2009-04-14T12:48:39Z")

</div>

Hi,

I’m trying to install the mysql-2.7 gem on Mac OS X Leopard with the  
default ruby installation (1.8.6). According to what I googled the  
following command

sudo ruby extconf.rb --with-mysql-dir=/usr/local/mysql

should work, but it doesn’t (I tried installing directly with gem and  
various combinations of options, preceding the options with – rtc., to  
no avail). I get the following output:

erato:mysql-2.7 jergosh$ sudo ruby extconf.rb  
–with-mysql-dir=/usr/local/mysql --with-mysql-lib=/usr/local/mysql/lib  
checking for mysql\_query() in -lmysqlclient… no  
checking for main() in -lm… yes  
checking for mysql\_query() in -lmysqlclient… no  
checking for main() in -lz… yes  
checking for mysql\_query() in -lmysqlclient… no  
checking for main() in -lsocket… no  
checking for mysql\_query() in -lmysqlclient… no  
checking for main() in -lnsl… no  
checking for mysql\_query() in -lmysqlclient… no

\*\*\* extconf.rb failed \*\*\*  
Could not create Makefile due to some reason, probably lack of  
necessary libraries and/or headers. Check the mkmf.log file for more  
details. You may need configuration options.

(…)  
–ruby=/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby  
–with-mysql-config  
–without-mysql-config  
–with-mysql-dir  
–with-mysql-include  
(…)

It seems to me that the --with-mysql-dir is somehow not passed to the  
configure script. If so, how can I fix that? If not, what else should I  
try?

TIA,  
Greg