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compile time javac
Also prepare the 'target.releaselevel' property to be set by 'RELEASE_LEVEL' environment,
however - we do not use it at this point.
For now, we build gluegen-rt using '-source 1.8' '-target 1.8'
and the bootclasspath of openjdk8 rt.jar to ensure java8 compatibility.
Alternatively one could use '--release 8' instead using the java11
distributed modules. However, I think the above method is more safe,
only allowing java8 rt.jar to be used for compilation.
Further, gluegen.jar is build using '-target 1.8' only,
since it musty use java11 sources at least for the javadoc taglet.
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Current requirements are:
- Java 1.8 (Level 8.0)
- Android SDK API level 24 (Version 7.0 Nougat, released August 2016)
Official production builds are performed w/ Java 1.8.
- Java 1.8 (Level 8.0)
- Android SDK API level 24 (Version 7.0 Nougat, released August 2016)
Android 7 API level 24 supports Java 1.8,
see https://developer.android.com/studio/write/java8-support
Java 8 is chosen today, June 2019, since OpenJDK 1.8 is well supported
on desktop, mobile support is given w/ OpenJDK 9 and
Android also support these language features for almost 3 years.
++++
Current patch does require one to set the target.sourcelevel,
target.targetlevel and target.rt.jar properties or their equivalent
capital case environment variables.
Only allowed value is currently 1.8.
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generated_class_user due to Java8 issues.
Java8's annotation processor as embedded within javac does not allow
referencing not-yet existing generated classes in a class source code
which will produce these generated classes via the annotation process.
Example:
+++
import com.jogamp.gluegen.structgen.CStruct;
public class Lala {
@CStruct(name="RenderingConfig", header="TestStruct01.h")
public RenderingConfig config;
}
+++
Above example illustrates that the type 'RenderingConfig'
does not exist at time of processing the annotation.
The type will be created via the annotation process itself.
Even though we pass '-proc:only', i.e. skip java compilation,
Java8's annotation processing via javac fails in such case.
We see this as a bug within javac's annotation processing itself!
+++
This workaround splits the annotation process and using the class as
generated by the former.
To allow this to work, CStruct receives a new field 'jname'
allowing to enforce the java-name of the structure
using a dummy field type like boolean.
@CStruct(name="RenderingConfig", jname="RenderingConfig", header="TestStruct01.h")
public boolean dummy;
Further more CStruct can be annotated on the package, i.e. 'package-info.java',
avoiding the dependency problem altogether.
To support multiple header files and types,
'CStructs' has been introduced using an array of 'CStruct'.
@CStructs({@CStruct(name="RenderingConfig", header="TestStruct01.h"), @CStruct(name="Pixel", header="TestStruct02.h")})
package com.jogamp.gluegen.test.junit.structgen;
Tests:
- Build w/ Java7 and Java8
- Validated 'major version 50' (Java 6) class files (OK)
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producing Java6 bytecode ; Apply JAR Manifest tags: Sealed, Permissions and Codebase
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Current minimum requirements are:
- Java 1.6 (Level 6.0)
- Android SDK API Level 9 (Version 2.3 Gingerbread)
Official production builds are performed w/ Java 1.6.
- Java 1.6 (Level 6.0)
- Android SDK API Level 9 (Version 2.3 Gingerbread)
Android supports Java language level 6.0.
Nevertheless, it cannot be guaranteed whether the Android API
supports all classes and methods of Java 1.6.
It is required for JogAmp developers to validate Android compatibility
by an Android crosscompilation build.
Current GlueGen code utilizes some minor Java 1.6 features
which could be replaced, however it's not desired at this point
since we have no mode hard Java 1.5 constraints.
Notes:
- On OS X 10.5.8, only the 64bit version of Java6 is available
and hence the only supported one on Leopard.
+++
Pushing determination of host (compiletime) and target (runtime) Java version
to 'jogamp-env.xml'.
jogamp-env.xml uses:
env: SOURCE_LEVEL -> propery: target.sourcelevel def.: ${ant.java.version} >=1.6 (!)
env: TARGET_LEVEL -> propery: target.targetlevel def.: ${ant.java.version} >=1.6 (!)
env: TARGET_RT_JAR -> propery: target.rt.jar def.: ${java.home}/lib/rt.jar
Either all above values are set, or none at all (default),
otherwise a build error is being thrown.
Further more we have the compiletime properties:
host.sourcelevel def.: ${ant.java.version} >= 1.6 (!)
host.targetlevel def.: ${ant.java.version} >= 1.6 (!)
host.rt.jar def.: ${java.home}/lib/rt.jar
+++
- 'javac.memorymax' defaults to 1024m now.
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- NativeLibrary:
- add isValidNativeLibraryName(..)
- generic style
- Platform
- add getOSAndArch(), getOSAndArch(..)
- IOUtil
- add getClassFileName(..)
- add getBasename(..)
- add getDirname(..)
- added doc
- ReflectionUtil
- generic style
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[manually]
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Add Java source zip file.
Query git branch/sha1 and use it if not set and tools are available.
This shall improve tracking of manual generated binaries/bundles.
Add Java source zip file. Contains all Java source code (incl. generated ones) enhancing
IDE usage, where API doc and source browsing of libs is supported (NB/Eclipse/etc).
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