Bjoern Voigt created NETBEANS-6378:
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Summary: Unable to use JEP 247 with ANT projects: error: option
-source cannot be used together with --release
Key: NETBEANS-6378
URL: https://issues.apache.org/jira/browse/NETBEANS-6378
Project: NetBeans
Issue Type: Bug
Components: core, java - Compiler
Affects Versions: 12.5
Reporter: Bjoern Voigt
[JEP 247|https://openjdk.java.net/jeps/247] enhances {{javac}} so that it can
compile Java programs to run on selected older versions of the platform.
If for instance {{javac}} from JDK 17 should compile a program for Java 8
compatibility, then the following command line is suitable:
{code:java}
javac --release 8 Main.java{code}
The --release option can be specified in Netbeans projects here: Build ->
Compiling -> Additional Compiler Options.
Unfortunately the --release option results in build errors, at least with
Netbeans ANT projects:
{code:java}
error: option -source cannot be used together with --release{code}
The full build log:
{code:java}
ant -f /tmp/NetBeansProjects/JavaApplication9 -Dnb.internal.action.name=rebuild
clean jar
init:
deps-clean:
Updating property file:
/tmp/NetBeansProjects/JavaApplication9/build/built-clean.properties
Deleting directory /tmp/NetBeansProjects/JavaApplication9/build
clean:
init:
deps-jar:
Created dir: /tmp/NetBeansProjects/JavaApplication9/build
Updating property file:
/tmp/NetBeansProjects/JavaApplication9/build/built-jar.properties
Created dir: /tmp/NetBeansProjects/JavaApplication9/build/classes
Created dir: /tmp/NetBeansProjects/JavaApplication9/build/empty
Created dir:
/tmp/NetBeansProjects/JavaApplication9/build/generated-sources/ap-source-output
Compiling 2 source files to /tmp/NetBeansProjects/JavaApplication9/build/classes
error: option -source cannot be used together with --release
error: option -target cannot be used together with --release
Usage: javac <options> <source files>
use --help for a list of possible options
BUILD FAILED (total time: 0 seconds)
{code}
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