[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 11:

(4 comments)

File util/crossgcc/buildgcc:

https://review.coreboot.org/c/coreboot/+/85275/comment/de4af8ff_afaad24c?usp... :
PS8, Line 783: declare
> `local`?

Done

https://review.coreboot.org/c/coreboot/+/85275/comment/9e35dec8_058fcfc5?usp... :
PS8, Line 784: @
> Ack, I was using bash locally.  I'll update.

Done

https://review.coreboot.org/c/coreboot/+/85275/comment/c5499c9e_dce488bc?usp... :
PS8, Line 858: [@]
> Not an array

Done

https://review.coreboot.org/c/coreboot/+/85275/comment/b3973f96_8428a83a?usp... :
PS8, Line 862: LIBSTDCXX_INCLUDE_PATH
> Maybe verify that `LIBSTDCXX_INCLUDE_PATH` isn't empty?

Done