Am 2023-02-09 um 15:38 schrieb Christoph Läubrich:
I have a question on this statement below that -D has not to go into
maven.config but in jvm config.
No, this is wrong and I didn't say that.
I think the difference is more that -D in jvm.config become a "real"
system-property (because it is evaluated before maven jvm start up), but
-D options specified in maven.config actually become user-propertties
AND "soft" systemproperties (as they are set after the JVM has started)
see the following code:
https://github.com/apache/maven/blob/master/maven-embedder/src/main/java/org/apache/maven/cli/MavenCli.java#L1465-L1492
So -D is a valid JVM option AND a valid mvn commandline option (named
SET_USER_PROPERTY == -D)
Also https://maven.apache.org/ref/3.9.0/maven-embedder/cli.html mention
-D as a cli option!
Actually, no. The real problem is
https://github.com/apache/maven/blob/7b38457506544854cdd26aa1d49608050217b923/maven-embedder/src/main/java/org/apache/maven/cli/MavenCli.java#L1494-L1503.
Java system properties != Maven user properties. It is unfortunate, for
historical reasons, that both have been mixed. You cannot reliably set a
system property *after* 'mvn'. Some will not even be effective. Slawek
and me are working on cleaning this up in the future. Therefore, I have
clearly renamed the help output in Maven to denote that those are user
properties and *not* system properties. It is also unfortunate that
Maven uses '-D' for this, I would have preferred '-P', but this is taken
already.
Also prior to 3.9.x the contents of the file was split by *any* space see:
https://github.com/apache/maven/blob/maven-3.8.x/maven-embedder/src/main/java/org/apache/maven/cli/MavenCli.java#L380-L399
Also reading this I can't find a indication that new lines are required:
https://maven.apache.org/configure.html
You also can't find the opposite. There is no formal specification. That
is the real problem. We have failed to provide clear instructions for
both config -- rather opts -- files.
Am 31.01.23 um 16:00 schrieb Michael Osipov:
Am 2023-01-31 um 01:35 schrieb Dan Tran:
run into this issue
"Unable to parse maven.config file options: Unrecognized maven.config
file
entries: [ -e --fail-fast -Djavax.xml.accessExternalSchema=all
-Daether.connector.resumeDownloads=false]"
The workaround is to break it into multiple lines
This is not a workaround. Your input is wrong in two ways:
1. Each arg has to be in one line:
https://gitbox.apache.org/repos/asf?p=maven.git;a=commit;h=331c5c3435cdfa8dc3f35a7b38503bdac2654206
2. Java system props must *not* be passed via maven.config, but via
MAVEN_OPTS or jvm.config only, e.g.,
-Djavax.xml.accessExternalSchema=all
M
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