RFR : JDK-8032045 : (m/l) Enable compiler and linker safety switches for debug builds

[Magnus Ihse Bursie]

On 2014-02-24 19:13, Mike Duigou wrote:
> On Feb 24 2014, at 06:09 , Magnus Ihse Bursie <magnus.ihse.bursie at oracle.com> wrote:
>
>
>> * I'd also have a preference for moving the "compiler supports -Og" check outside the actual flag setting. Maybe you can do the checking first and set a variable indicating the availablility of this flag, e.g. GCC_SUPPORTS_OG_FLAG, and then just check on that. The point here is that it's hard as it is to see the pattern between different optimization levels and compilers, but the more the code resembles a simple structured assignment matrix, the easier it is to see it. With checking code like this in the midst, it's easier to get lost.
> Understood. Perhaps do the GCC_SUPPORTS_OG_FLAG in compiler setup?
I think that would be good, yes. In my view, toolchain.m4 is responsible 
for determining information about the actual compilers; type, version, 
bugs and capabilities.

flags.m4 should setup proper flags, based on the results of the analysis 
in toolchain.m4.

/Magnus