Enable hotspot builds for 4.x Linux kernels.

[Erik Joelsson]

It seems you are trying to build jdk8 instead of jdk8u. The jdk8/jdk8 
forest represents the source at the point when jdk8 was released. All 
updates are done in jdk8u/jdk8u, where this fix is present.

/Erik

On 2016-07-11 10:10, Jeremy Whiting wrote:
> Hi,
>
>  Last week I started the process to build jdk8 using a Fedora 23 
> environment. Followed the detailed instructions but came across an 
> issue. Looking at the bugs database identical issues have been raised 
> for various components [1] and jdk versions. It appears the backport 
> missed it into the hotspot repo for jdk8. Browsing the hotspot repo 
> shows [2] the supported os version doesn't include a 4.x Linux kernel.
>
>  Can this fix be backported to the jdk8 hotspot repo as well ?
>
>
> $ hg diff
> diff -r 87ee5ee27509 make/linux/Makefile
> --- a/make/linux/Makefile    Tue Mar 04 11:51:03 2014 -0800
> +++ b/make/linux/Makefile    Mon Jul 11 08:59:44 2016 +0100
> @@ -225,7 +225,7 @@
>  # Solaris 2.5.1, 2.6).
>  # Disable this check by setting DISABLE_HOTSPOT_OS_VERSION_CHECK=ok.
>
> -SUPPORTED_OS_VERSION = 2.4% 2.5% 2.6% 3%
> +SUPPORTED_OS_VERSION = 2.4% 2.5% 2.6% 3% 4%
>  OS_VERSION := $(shell uname -r)
>  EMPTY_IF_NOT_SUPPORTED = $(filter $(SUPPORTED_OS_VERSION),$(OS_VERSION))
>
> $
>
>
> Regards,
>
> Jeremy
>
>
> $ uname -a
> Linux burtha-f23 4.5.7-200.fc23.x86_64 #1 SMP Wed Jun 8 17:41:50 UTC 
> 2016 x86_64 x86_64 x86_64 GNU/Linux
>
> [1] 
> https://bugs.openjdk.java.net/browse/JDK-8087178?jql=text%20~%20%22Enable%20hotspot%20builds%20on%204.x%20Linux%20kernels%22
>
> [2] 
> http://hg.openjdk.java.net/jdk8/jdk8/hotspot/file/87ee5ee27509/make/linux/Makefile#l228
>
>
>