Configuration script unable to detect boot JDK's modules support

[Erik Joelsson]

It seems the test is indeed incorrect at this point. When I added that 
test, the launcher would accept just -Xpatch:. It seems to now accept 
-Xpatch:foo so perhaps we should use that for the test.

/Erik

On 2016-03-31 09:56, Filipp Zhinkin wrote:
> Hi all,
>
> I'm trying to build OpenJDK from latest sources using JDK9-b111 as a boot JDK
> and configuration script is not able to detect modules support:
>
> $ bash configure --enable-option-checking=fatal
> --with-jvm-variants=server --with-debug-level=release
> --disable-headful --with-boot-jdk=/home/filipp/Downloads/bootdir/jdk-9
> --with-jtreg=/home/filipp/Development/openjdk/jtreg
> ...
> $ grep modules build/linux-x86_64-normal-server-release/configure.log
> checking if Boot JDK supports modules... no
>
> I've looked into common/autoconf/boot-jdk.m4 to find out how modules
> support is detected and we simply pass '-Xpatch:' to JVM [1]:
>
> jdk-9/bin/java -Xpatch: -version
> Bad value for -Xpatch.
> Error: Could not create the Java Virtual Machine.
> Error: A fatal exception has occurred. Program will exit.
>
> Am I missing something or that check should actually pass -Xpatch:blablabla?
>
> Regards,
> Filipp.
>
> [1] http://hg.openjdk.java.net/jdk9/jdk9/file/03543a758cd5/common/autoconf/boot-jdk.m4#l308