I've downloaded the dbd-mysql-0.4.4.zip and linked it to my project. While I try to run a demo code from NetBeans the very first line (shown below) gives me an error. Is there a different way to do it?
require "dbi";
I also tried this command from the command prompt:
jruby setup.rb config --with=dbi,dbd_mysql
It gave me the following error:
config: unknown option --with=dbi,dbd_mysql
Try ruby setup.rb --help for detailed usage.
Any suggestions please?
If you're working with jruby, you need to use dbd-jdbc, because dbd-mysql depends on mysql a native extension (written in C) for Matz' Ruby interpreter.
Install it using rubygems: jruby -S gem install dbi, and add require 'rubygems' as the first line of your code.
Related
I tried a lot of things I read on documentations or tutorials... But I still can't cross-compile Qt with the MySQL library driver. Story begins:
I have to cross-compile Qt from Linux to Windows (32bits) using MinGW (i686-w64-mingw32- prefix to be precise). I downloaded qtbase-opensource-src-5.9.4 and started to work like that:
$ ./configure -prefix [...]/qt-5.9.4 -xplatform win32-g++ -device-option CROSS_COMPILE=/usr/bin/i686-w64-mingw32- -opengl desktop -no-sql-odbc -sql-sqlite -enable-shared -nomake examples -nomake tests -release
And it worked. Then, make and make install worked too. But I figured out that there was only the SQLite ".dll" in the plugins/sqldrivers repository. So I tried to compile the MySQL driver and... How can I do that?? If I add -sql-mysql to my ./configure ... call, I have to following error:
ERROR: Feature 'sql-mysql' was enabled, but the pre-condition 'libs.mysql' failed.
I downloaded MySQL library from the official website to get mysql-5.7.21-win32.zip. But how to link it with qtbase sources? Adding MYSQL_INCDIR=[...]/mysql-5.7.21-win32/include and MYSQL_LIBDIR=[...]/mysql-5.7.21-win32/lib or just MYSQL_PREFIX=[...]/mysql-5.7.21-win32 to my ./configure ... command results to the same error message.
Any idea please?
EDIT:
I tried to compile the driver like that (with the qmake I built previously):
$ cd qtbase-opensource-src-5.9.4/src/plugins/sqldrivers/mysql
$ [/*prefix of my previous build*/]/qt-5.9.4/bin/qmake .
And the result is:
Project ERROR: Library 'mysql' is not defined.
Ok everyone, I found the solution: do a clean checkout or add -recheck-all to the ./configure command when you want to add a lib like MySQL in my case. Easy isn't it? To make it clear, here is the command I used:
./configure -prefix [...] -xplatform win32-g++ -device-option CROSS_COMPILE=/usr/bin/i686-w64-mingw32- -opengl desktop -no-sql-odbc -sql-sqlite -plugin-sql-mysql MYSQL_PREFIX=[...] -enable-shared -nomake examples -nomake tests -release -recheck-all
That was just a refresh problem, but I prefer to let this answer because it's pretty hard to realize.
Instead of what you tried in your EDIT, should I think be:
$ cd qtbase-opensource-src-5.9.4/src/plugins/sqldrivers
qmake -- MYSQL_PREFIX= [...]/mysql-5.7.21-win32/include
I've been following along with the Lynda.com's Ruby on Rails course. I did everything just as mentioned inside the videos.
I am trying to run the rails server command, which should default to WEBrick, correct?
I run the command and it has an issue in the nokogiri.rb file and on line 29 where the error is happening this is what is read:
require 'nokogiri/nokogiri'
Which is what my command prompt is throwing up on when running the rails server command. Any idea what could be causing this? If so, what commands do I need to run to settle this? To me it sounds like something was missed when installing MySQL.
I am not sure what nokogiri is and why rails server won't run and points to that line of code.
The path to this file is (Wherever you installed the folder to)\lib\ruby\gems\2.2.0\gems\nokogiri-1.6.6.2-x64-mingw32\lib
EDIT**: I have a chain of errors, like it goes from -long path-, from -longpath- etcetera. I tried installing the latest gem, and it wasn't successful. Is there a log file I can get to share with you guys to help figure out the issue.
nokogiri is a Ruby "gem" (library) for parsing XML and HTML.
Your Rails project should have a Gemfile which specifies the name and version of each gem needed to run the project. To install the gems listed in the gemfile:
bundle install
After that install completes successfully, Rails should be able to find the nokogiri gem.
Try this
$ sudo apt-get install libxslt-dev libxml2-dev zlib1g-dev
$ sudo gem install nokogiri -v '1.5.11'
According to \lib\ruby\gems\2.2.0\gems\nokogiri-1.6.6.2-x64-mingw32\lib, which means that you are running it on Windows platform. You are using ruby 2.2.0.
I know that nokogiri conflicts with 2.2.* versions of ruby in Windows. I have already encountered this problem. I think it is because of mingw32.
You need to install 2.1.* version of Ruby in order to make Nokogiri work.
I'm trying to install program called OrthoMCL on MacOS X 10.6.8 Snow Leopard. For it's work it needs DBI module for Perl. On my machine I have two perl installations - prebuild 5.10.0 version on /usr/bin/perl (call it Perl1) and 5.12.3 MacPorts installation (call it Perl2) which I actually use.
Problem is that OrthoMCL is trying to work with /usr/bin/perl. If I try to install CPAN DBI and DBD::mysql modules from CPAN for Perl1 I have errors like:
lipo: can't open input file: /var/tmp//ccOBwzHU.out (No such file or directory)
make: *** [Perl.o] Error 2
External compilation with
/usr/bin/perl Makefile.PL
make
results the same error.
I can install DBI and DBD::mysql on Perl2, but OrthoMCL doesn't work with it.
Addition Perl2 modules pathways to PERL5LIB variable does error with attempt to work with Perl1:
Perl lib version (5.12.4) doesn't match executable version (v5.10.0) at /opt/local/lib/perl5/5.12.4/darwin-thread-multi-2level/Config.pm line 50.
So I have two questions:
Is there an idea how can I install DBI and DBD::mysql modules for Perl1.
Does anybody know how can I force OrthoMCL to work with Perl2?
Thanks!
Try sudo /usr/bin/perl Makefile.PL && make.
Regarding perl version, you need to install the modules for your second perl version too for it to work. I don't know of OrthoMCL at all, but I'd consult it's documentation regarding how it works together with perl.
On Mac OS X, I would strongly recommend never using the system perl at all, and instead using App::Perlbrew to install and use a perl in your home directory.
For more than a few years, OS X's perl has been broken in various ways that are nearly impossible to fix unless you are a guru. It's a rathole you don't want to go down.
Perl applications should not be hardcoding /usr/bin/perl on their first ("shebang") line: that is a bug. Replace it with /usr/bin/env perl, which will run whichever perl you've selected with perlbrew.
After a clean install of jRuby 1.5.5, I cannot run jruby -v from the command line without getting the following error:
jruby: unknown option --disable-gems
I didn't specify that option so I don't know where it's coming from.
This also precludes me from using jruby in Netbeans.
Any ideas?
-Jim
It was completely my oversight. I had added the --disable-gems as an environment variable in an attempt to speed up rails on a windows machine. I completely forgot.
ah...it is not easy to get started ruby on rails to me..
I am trying to use mysql for ruby on rails development.
When I execute "gem install mysql", I get following error.
error: while generating documentation for mysql-2.8.3-x86-mswin32...message: unhandled special: special: type=17...bla bla...
how do I install mysql for ruby on rails!??!
If you are on windows and want to avoid mysql issues, just use v 2.1.2, just before they removed the mysql connector and put it into the mysql gem. It's better like that, but I ran into MANY issues installing this on the Windows XP machine at my work.
Make sure that your version of gems is the latest.
You should be able to update it using:
gem update --system
Going by your error it failed to generate the documentation for the Gem, though it could have installed it as it was. Firstly check to see if it did install, use:
gem list --local
And check to see if the MySQL driver is in the list already.
If it isn't the make sure you're installing the correct version of the driver, either mswin32, or ruby should do.
That's an error concerning rdoc generation. If you execute the following command you'll get no error:
gem install --no-rdoc mysql
I believe there are some problems generating rdoc for the Japanese localized version of the docs. Anyway, the mysql gem gets installed.
You can easily install the MySQL gem
either install the MySQL in ruby file where all gems are install or you can follow the path:
C:\Ruby192\lib\ruby\gems\1.9.1\gems
execute the below command:
gem install MySQL
hope this helps you!