Building without Solaris directory on Linux

[Volker Simonis]

On Wed, Nov 11, 2015 at 11:00 AM, Frieder Berthold
<berthold.frieder at googlemail.com> wrote:
> Hello to all,
>
> I am new in buiding OpenJDK and hope, that this is the right list for my
> problem.
>
> To get a small JVM and rt.jar I try to build OpenJDK 8 with the small musl
> libc (http://www.musl-libc.org/) instead of using the standard gnu libc,
> yet I do not get it to build correctly.
>
> My system: ubuntu 14.04 64bit
>
> OpenJDK: OpenJDK 8 cloned from http://hg.openjdk.java.net/jdk8/jdk8/
>
> My Problem: The following headers (which musl does not provide) cannot be
> found while building the solaris-part
>
>
> jdk8/jdk/src/solaris/native/java/net/PlainDatagramSocketImpl.c:38:24: fatal
> error:        sys/sysctl.h: No such file or directory
>
> and
>
>            jdk8/jdk/src/solaris/native/java/net/NetworkInterface.c:50:25:
> fatal error: bits/ioctls.h: No such file or directory
>
> My Question: Even though I got a Linux (which is stated after the configure
> process) it tries to build the sources in the solaris directory. Is this
> necessary or is there a way to prevent this?

For jdk8, jdk/src/solaris actually contains all the common "unix"
sources so you indeed have to compile it. In jdk8, the linux directory
only contains some man-pages but no real source code.

In jdk9 the sources have been reordered and now there's a "unix"
directory for shared unix sources and linux, solaris, aix, etc.
directories for platform dependent stuff.

> Even deeper into this matter:
> I only need the profile compact1 for the Linux OS, are there switches for
> the configure step to achieve this?
>
> Thank You in advance for any help!
> Frieder