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From "Brett Porter (JIRA)" <j...@codehaus.org>
Subject [jira] Updated: (MNG-2989) M2_HOME is incorrect when launched from another process
Date Thu, 18 Dec 2008 13:46:19 GMT

     [ http://jira.codehaus.org/browse/MNG-2989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brett Porter updated MNG-2989:
------------------------------

    Fix Version/s:     (was: Reviewed Pending Version Assignment)
                   2.0.x

> M2_HOME is incorrect when launched from another process
> -------------------------------------------------------
>
>                 Key: MNG-2989
>                 URL: http://jira.codehaus.org/browse/MNG-2989
>             Project: Maven 2
>          Issue Type: Improvement
>          Components: Command Line
>    Affects Versions: 2.0.6
>         Environment: WinXP
>            Reporter: Tim Reilly
>            Priority: Minor
>             Fix For: 2.0.x
>
>
> This is just an idea to solve the following:  I believe echo'ing ~dp0 when launching
maven.bat from ant exec produces the ant.bat processes ~0; not the maven bat  files ~0 -since
createProc API is used the processes command is the first argument.
> I think you may get around this by putting a new "finder file" .bat along side mvn.bat
. Since mvn.bat and find_m2.bat are both on the path I can "discover" where M2_HOME is from
the %PATH%.
> Within mvn.bat
> if  "%m2_home%" == ""(
>    if "%OS%"=="Windows_NT" (call find_m2.bat)
> ) 
> Within find_m2.bat:
> @echo off
> setlocal
> set  _WHERE_IS_M2=%~dp0
> set M2_LOCAL_HOME=%__WHERE_IS_M2:\bin=%
> @REM echo %M2_LOCAL_HOME%
> endlocal & set M2_HOME=%M2_LOCAL_HOME%

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