Re: Building JAMES

Hi David,

I think you are trying to compile the latest code from master branch 
right? A move has been made lately towards java 11 on it if I'm correct. 
Try to compile and run with Java11 instead?

Regards,
Rene.

On 27/04/2020 06:06, David Leangen (Apache) wrote:
> Hi!
> 
> This is the first error:
> 
> [INFO] Apache James :: Server :: Common Utilities ......... FAILURE [  0.659 s]
> 
> [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project james-server-util: Fatal error compiling: invalid flag: --release -> [Help 1]
> 
> Googling tells me to comment out the “release” flag in maven-compiler-plugin, so I try that (though I don’t understand why) and get a different error:
> 
> [INFO] Apache James :: Server :: Common Utilities ......... FAILURE [  0.551 s]
> 
> [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project james-server-util: Fatal error compiling: invalid target release: 11 -> [Help 1]
> 
> Yeah, that makes sense. I am still on Java 8. So I modify the target.jdk version to 8 and make a bit of progress:
> 
> [INFO] Apache James :: Core Domain Objects ................ FAILURE [  0.597 s]
> 
> [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project james-core: Compilation failure: Compilation failure:
> [ERROR] /Users/dleangen/libs/james-project/core/src/main/java/org/apache/james/core/builder/MimeMessageBuilder.java:[400,46] no suitable method found for toArray(InternetAd[...]::new)
> 
> Hmmmm. This is in the code. I just want to compile, not debug at this point. This makes me think that the project is currently being neglected. :-(
> 
> Ok, let me try to omit the core project (though that does not sound like a promising approach).
> 
> [INFO] Apache James Cassandra backend ..................... FAILURE [ 18.471 s]
> 
> [ERROR] Failed to execute goal on project apache-james-backends-cassandra: Could not resolve dependencies for project org.apache.james:apache-james-backends-cassandra:jar:3.6.0-SNAPSHOT: Could not find artifact org.apache.james:james-core:jar:3.6.0-SNAPSHOT in apache.snapshots (https://repository.apache.org/snapshots) -> [Help 1]
> 
> Yeah, like I expected.
> 
> Ok, so try mvn eclipse:eclipse without building the project, then? I only get this far:
> 
> [INFO] Apache James :: Test helpers for Mailet ............ FAILURE [  1.859 s]
> 
> [ERROR] Failed to execute goal org.apache.maven.plugins:maven-remote-resources-plugin:1.6.0:process (process-resource-bundles) on project apache-mailet-test: Execution process-resource-bundles of goal org.apache.maven.plugins:maven-remote-resources-plugin:1.6.0:process failed: Failed to resolve dependencies for one or more projects in the reactor. Reason: Missing:
> [ERROR] 1) org.apache.james:james-core:jar:3.6.0-SNAPSHOT
> [ERROR] 2) org.apache.james:apache-james-mailbox-api:jar:3.6.0-SNAPSHOT
> 
> Perhaps only a simple fix is required to get everything compiling, but since I have never yet looked at any of the code base, I don’t know. I can’t even set it up in my Eclipse yet because I cannot run mvn eclipse:eclipse until I can get the projects to compile.
> 
> I’m sure someone with enough motivation could figure out a way around these issues, but I thought that the golden rule was that the project should compile out of the box. That’s why I asked my original question.
> 
> Cheers,
> =David
> 
> On Apr 27, 2020 02:39 +0900, Jerry Malcolm <[email protected]>, wrote:
>> Sadly I realized a while back that it does not build out of the box.
>> Through much trial and error, I finally got the build to complete.
>> However, even with that, for some reason I still get several errors.
>> Apparently they aren't fatal errors.  I have learned that if there is
>> really something wrong, the build won't complete.  However, if the maven
>> build gets to the end, even if there were errors reported, the build
>> works.  I would really like to understand this better.  If the 'errors'
>> I get aren't really critical, seems they should be warnings.  I build
>> and use James. But it doesn't give me a whole load of confidence that
>> there were errors in the build, even though the build doesn't abort on them.
>>
>> What kind of errors are you getting?  Does the build stop on those errors?
>>
>> Jerry
>>
>> On 4/26/2020 5:58 AM, David Leangen wrote:
>>> Hi!
>>>
>>> I am trying to build JAMES from HEAD using mvn install. It is my expectation (from working with other projects) that I should just be able to build “out of the box”.
>>>
>>> My first question: is my expectation correct? Am I supposed to be able to build JAMES without any compilation errors?
>>>
>>>
>>> If so, is anybody willing to help me understand the problems so I can make PRs to fix the build issues?
>>>
>>> If not: what is the expected path to be able to use the source code. It is not clear to me from the documentation (which only seems to discuss building the websites).
>>>
>>>
>>> Thanks!
>>> =David
>>>
>>>
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