[lmi] Detecting gcc version using 'make' [Was: Treacherous gcc-10 defect]

[Greg Chicares]

On 3/2/21 1:12 PM, Vadim Zeitlin wrote:
> On Mon, 1 Mar 2021 17:06:20 +0000 Greg Chicares <gchicares@sbcglobal.net> 
> wrote:
[...snip 'gcc -dM -E' trick...]
> GC> This seems like too much labor when '-dumpfullversion' should Just Work.
[...]
>  And I think it should be possible to implement the equivalent of autoconf
> AC_TRY_COMPILE() macro with just GNU make macros. Whether we want to do it
> or not is another question, because it's likely to be somewhat hairy.
[...demonstration snipped...]
>  As usual, all this is just idle musings, please let me know if you think
> it would be worth really looking into this,

Interesting [snipped] example. Thanks. But I don't think we should
pursue such ideas. We can just update the makefiles to specify
'-fno-omit-frame-pointer' when a fixed gcc becomes available as a
debian package.