Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I started out by trying to run ant on a java program in a RH terminal.

BUILD FAILED
/home/phuong3/soar/soarRepos2/soar/tools/trunk/build.xml:187: Compiler Adapter 'javac1.6' can't be found.

Total time: 0 seconds

I was told that this problem would be fixed if I updated ant from 1.6.5 to 1.7.1. 1.7.1 already exists on the system at /opt/apache-ant-1.7.1/bin. So I changed ANT_HOME to this directory, and appended it to PATH. Now the state is:

[**** trunk]$ echo $ANT_HOME
/opt/apache-ant-1.7.1/bin
[**** trunk]$ ant -version
Apache Ant version 1.6.5 compiled on August 30 2006

So I'm presumably missing a very fundamental step. Can you tell me what it is?

EDIT: Bump. I really could use a hint on this. Is there more information I can provide? Basically what I need to know is, once I already have the Ant 1.7.1 binaries in the system, and ANT_HOME set to this directory, what else do I have to do to make 1.7.1 be the version that's used?

share|improve this question
    
Is the old version removed from the PATH? it may still be finding that version first. –  MaQleod Oct 17 '11 at 17:39
    
Ahh. PATH includes /usr/bin, and `which ant' -> /usr/bin/ant. So the problem's identified, but how do I fix it? Obviously, I don't want to remove /usr/bin from PATH, right? –  Frank Harris Oct 17 '11 at 17:48
    
You're supposed to construct an absolute path using $ANT_HOME/ant if it's defined, and not rely on a correct $PATH. –  Daniel Beck Oct 18 '11 at 18:45

1 Answer 1

Solved it myself. Explanation to the best of my ability: Since when I typed in ant, the OS iterated through PATH until it found a directory which contained an executable called ant, the first one it found was going to be the right one. The one I wanted it to execute was LAST in the path. So in bash_profile, instead of export PATH=$PATH:/opt/apache-ant-1.7.1/bin, I did export PATH=/opt/apache-ant-1.7.1/bin:$PATH. Now, the desired version of ant shows up first and is the one executed.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.