Provide a natively compiled version

[apupier]

Issue informations

currently, a springboot jar is provided. In cloud environment, Ram used is often constrained (sic). If we can provide a native version that can be launched inside Eclipse Che at least, it should improve RAM usage.

see GraalVM https://www.graalvm.org/docs/reference-manual/aot-compilation/

[apupier]

using this branch and building from a "Visual C++ 2015 x86 x64 Cross Built Tools" command prompt, it is reporting these things to configure:

Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.helpers.OptionConverter.class$(OptionConverter.java:220)
Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.helpers.Loader.class$(Loader.java:106)
Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.CategoryKey.class$(CategoryKey.java:47)
Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.Category.class$(Category.java:118)
Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.Logger.class$(Logger.java:35)
Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.helpers.Loader.loadClass(Loader.java:182)
Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.helpers.Loader.loadClass(Loader.java:198)
Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.or.RendererMap.class$(RendererMap.java:53)
Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.PropertyConfigurator.class$(PropertyConfigurator.java:605)
Warning: Reflection method java.lang.Class.forName invoked at org.apache.log4j.config.PropertySetter.class$(PropertySetter.java:142)
Warning: Reflection method java.lang.Class.newInstance invoked at org.apache.log4j.helpers.OptionConverter.instantiateByClassName(OptionConverter.java:337)
Warning: Reflection method java.lang.Class.getMethod invoked at org.apache.log4j.helpers.OptionConverter.toLevel(OptionConverter.java:223)
Warning: Reflection method java.lang.Class.getMethod invoked at org.apache.log4j.helpers.Loader.getTCL(Loader.java:160)
Warning: Reflection method java.lang.Class.getMethods invoked at org.eclipse.lsp4j.jsonrpc.validation.ReflectiveMessageValidator.validate(ReflectiveMessageValidator.java:137)
Warning: Reflection method java.lang.Class.getDeclaredMethods invoked at org.eclipse.lsp4j.jsonrpc.services.AnnotationUtil.findRpcMethods(AnnotationUtil.java:63)
Warning: Reflection method java.lang.Class.getDeclaredMethods invoked at org.eclipse.lsp4j.jsonrpc.services.AnnotationUtil.findDelegateSegments(AnnotationUtil.java:30)
Warning: Reflection method java.lang.Class.getDeclaredConstructor invoked at org.eclipse.lsp4j.jsonrpc.json.adapters.ThrowableTypeAdapter.read(ThrowableTypeAdapter.java:81)
Warning: Reflection method java.lang.Class.getDeclaredConstructor invoked at com.google.gson.internal.ConstructorConstructor.newDefaultConstructor(ConstructorConstructor.java:99)
Warning: Reflection method java.lang.Class.getDeclaredConstructor invoked at org.eclipse.lsp4j.jsonrpc.json.adapters.ThrowableTypeAdapter.read(ThrowableTypeAdapter.java:87)
Warning: Reflection method java.lang.Class.getDeclaredConstructor invoked at org.eclipse.lsp4j.jsonrpc.json.adapters.ThrowableTypeAdapter.read(ThrowableTypeAdapter.java:84)
Warning: Reflection method java.lang.Class.getDeclaredConstructor invoked at org.eclipse.lsp4j.jsonrpc.json.adapters.CollectionTypeAdapter$Factory.getConstructor(CollectionTypeAdapter.java:70)
Warning: Reflection method java.lang.Class.getDeclaredConstructor invoked at org.eclipse.lsp4j.jsonrpc.json.adapters.ThrowableTypeAdapter.read(ThrowableTypeAdapter.java:90)
Warning: Reflection method java.lang.Class.getField invoked at com.google.gson.internal.bind.TypeAdapters$EnumTypeAdapter.<init>(TypeAdapters.java:797)
Warning: Reflection method java.lang.Class.getDeclaredFields invoked at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:150)
Warning: Reflection method java.lang.ClassLoader.loadClass invoked at org.apache.log4j.helpers.Loader.loadClass(Loader.java:185)
Warning: Aborting stand-alone image build due to reflection use without configuration.

and there is another error after, I hope it is due to the previous configuration (but to investigate):

net.lib(NetworkInterface_winXP.obj) : error LNK2001: unresolved external symbol __imp_sprintf
java.lib(Console_md.obj) : error LNK2001: unresolved external symbol __imp_sprintf
net.lib(TwoStacksPlainDatagramSocketImpl.obj) : error LNK2001: unresolved external symbol __imp_sprintf
net.lib(ResolverConfigurationImpl.obj) : error LNK2001: unresolved external symbol __imp_sprintf
net.lib(net_util_md.obj) : error LNK2001: unresolved external symbol __imp_sprintf
java.lib(jni_util.obj) : error LNK2019: unresolved external symbol __imp_fprintf referenced in function JNU_PrintString
java.lib(jni_util.obj) : error LNK2019: unresolved external symbol __imp___iob_func referenced in function JNU_PrintString
net.lib(NetworkInterface.obj) : error LNK2019: unresolved external symbol __imp__snprintf_s referenced in function enumInterfaces
net.lib(net_util_md.obj) : error LNK2019: unresolved external symbol __imp_printf referenced in function dumpAddr
jvm.lib(JvmFuncs.obj) : error LNK2001: unresolved external symbol __imp_printf
jvm.lib(JvmFuncs.obj) : error LNK2019: unresolved external symbol __imp_vfprintf referenced in function jio_vfprintf
jvm.lib(JvmFuncs.obj) : error LNK2019: unresolved external symbol __imp_vsnprintf referenced in function jio_vsnprintf
MSVCRT.lib(vsnprintf.obj) : error LNK2001: unresolved external symbol __imp_vsnprintf
MSVCRT.lib(vsnprintf.obj) : error LNK2001: unresolved external symbol __imp__vsnprintf
C:\git\camel-language-server\target\CamelLanguageServer.exe : fatal error LNK1120: 8 unresolved externals

nota:

• needs to specify -H:+TempFile= because of On Windows, if users have "long" username, the build is not working oracle/graal#1562
• needs to use a x64 version
• recommend to use a Windows SDK 7.1 version (but not sure yet how to have this version on Windows 10 )
• needs to commen tout springboot-maven-plugin for now, otherwise mainclass is not found

[apupier]

first batch of warning "fixed" in branch. Will need to test at runtime.
it will be interesting to launch with agent on test suite https://github.com/oracle/graal/blob/master/substratevm/CONFIGURE.md#assisted-configuration-of-native-image-builds (but nto available on Windows)

The second set of issues is related to a 32 bit C++ build tools compiler used.

Several issues on windows, for reference:

requires Visual Studio 2010 PRO and Visual Studio SDK 2010

cd C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64
vcvars64.bat
cd C:\git\camel-language-server
mvn install -DskipTests

currently seems blocked by:
oracle/graal#1484

java.lib(SecurityManager.obj) : error LNK2019: unresolved external symbol JVM_GetClassContext referenced in function Java_java_lang_SecurityManager_getClassContext
java.lib(SecurityManager.obj) : error LNK2019: unresolved external symbol JVM_CurrentLoadedClass referenced in function Java_java_lang_SecurityManager_currentLoadedClass0
java.lib(SecurityManager.obj) : error LNK2019: unresolved external symbol JVM_CurrentClassLoader referenced in function Java_java_lang_SecurityManager_currentClassLoader0
java.lib(SecurityManager.obj) : error LNK2019: unresolved external symbol JVM_ClassDepth referenced in function Java_java_lang_SecurityManager_classDepth
java.lib(SecurityManager.obj) : error LNK2019: unresolved external symbol JVM_ClassLoaderDepth referenced in function Java_java_lang_SecurityManager_classLoaderDepth0

Might be Windows only issue

[apupier]

From Leandro Del Sole on gitter chat about the SecurityManager error:

"I was building a java native image and needed this same libsunec.so to be able to use AWS SDK. I got this from Linux OpenJDK 11 and it worked for my case"