[M] Change in coreboot[main]: util/crossgcc: Add libstdcxx target

[Jon Murphy (Code Review)]

Attention is currently required from: Felix Singer, Karthik Ramasubramanian, Martin L Roth, Raul Rangel.

Jon Murphy has posted comments on this change by Jon Murphy. ( https://review.coreboot.org/c/coreboot/+/85275?usp=email )

Change subject: util/crossgcc: Add libstdcxx target
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Patch Set 8:

(2 comments)

Patchset:

PS5:
> Honestly I feel like any modular solution we come up with is going to be more complex than this 48 l […]

It's also not doing anything unreasonable.  We're adding support for an additional library that could be useful to upstream and other projects.  I added it in a way that wouldn't affect any other builds, and would only be called as needed.

File util/crossgcc/buildgcc:

https://review.coreboot.org/c/coreboot/+/85275/comment/040f0fa8_a5f0ba20?usp... :
PS8, Line 784: @
> POSIX `sh` doesn't actually have arrays AFAIK.

Ack, I was using bash locally.  I'll update.