flex sdk, frameworks and libraries

how to install flex 3 sdk mxml compiler on eclipse

0. Ensure Web Tools Platform and Web Standard Tools are installed with Eclipse.

1. Download Flex 3 SDK.

2. Extract Flex 3 SDK to {local_root}/flex_sdk_3

3. In Eclipse preferences, go to Ant > Runtime > Classpath > Global entries and Add External JARs

4. Select {local_root}/flex_sdk_3/ant/lib/flexTasks.jar

5. In Eclipse preferences, go to Ant > Runtime > Tasks and Add Task,

name: mxmlc

location: from step 4

class: /flex/ant/MxmlcTask.class

Then, with the right build file, you can start building Flex!