Installation from Download
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Prerequisites
In order to start using Grails you need to have the following:
* An installation of Java SDK 1.4 or higher and have set your JAVA_HOME variable to the SDK install location.
Steps
* Download the latest Grails release
* Extract the archive into an appropriate location; typically C:\grails on Windows or ~/grails on Unix
* Create a GRAILS_HOME environment variable that points to the path where you extracted the archive (eg C:\grails on Windows or ~/grails on Unix)
* If you have not set the JAVA_HOME environment variable yet, create JAVA_HOME environment variable that points to the path where you have installed Java
* Append a reference to the "bin" directory within the Grails directory to your PATH variable (eg %GRAILS_HOME%\bin on Windows or $GRAILS_HOME/bin on Unix). Note that, for Windows, both PATH and GRAILS_HOME must be defined at the same environment variable level (eg. 'System variables') rather than across environment variable levels (eg. PATH under 'System variables' and GRAILS_HOME under 'User variables')
* Type "grails" at the command line, if a help message is displayed you are ready to start using Grails!
* If you get an error message, try to chmod +x the grails script inside the bin directory.
Installation from Git (The Version Control Repository)
Prerequisites
In order to start using Grails from Git you need to have the following:
* An installation of Java 1.5 or higher and have set your JAVA_HOME variable to the install location
* A working installation of Apache Ant 1.7 or higher
* JUnit (to run the build tests - put junit.jar in your ANT_HOMElib directory)
* A Git client
Steps
* Checkout Grails from the Git repository
o Run this command: git clone git://github.com/grails/grails.git (+)
* Set the GRAILS_HOME environment variable to CHECKOUT_LOCATION/grails/grails
* Add the "%GRAILS_HOME%\bin" directory to your PATH environment variable
* Add the "%GRAILS_HOME%\ant\bin directory to your PATH environment variable.
* (You may need to give the scripts in "%GRAILS_HOME%\ant\bin execute permissions.)
* Increase the java memory to 1024M by setting ANT_OPTS=-Xmx1024M
* Go to the %GRAILS_HOME% directory and type "ant jar" to build Grails
* That's it! Start developing in Grails!
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