RFR (8u): 8034788: Rewrite toolchain.m4 to support multiple toolchains per platform

[Magnus Ihse Bursie]

On 2018-04-05 10:46, Kevin Walls wrote:
> Hi,
>
> I'd like to get a technical review of a backport to jdk8u:
>
> 8034788: Rewrite toolchain.m4 to support multiple toolchains per platform
> JBS: https://bugs.openjdk.java.net/browse/JDK-8034788
> 9 changeset: http://hg.openjdk.java.net/jdk9/jdk9/rev/b18872ff5379
>
> 8u webrev: http://cr.openjdk.java.net/~kevinw/8034788/webrev.00/
Looks good to me.

/Magnus
>
> toolchain.m4 did not import, lots of manual changes there, most other 
> files imported OK.
>
> This change adds flags.m4 which we have in 9, but not in 8 until now. 
> When 8151841 happened in 8u ( 
> http://closedjdk.us.oracle.com/jdk8u/jdk8u-cpu/rev/73494e6ff8e5 ) it 
> worked with toolchain.m4, and didn't create flags.m4.  But doing 
> 8034788 now, I wanted to bring 8 and 9 closer together, to make 
> further changes easier, so I add flags.m4, and e.g. 
> FLAGS_SETUP_GCC6_COMPILER_FLAGS moves to flags.m4.
>
> (I updated copyright years after creating the webrev.)
>
> Thanks
> Kevin
>