Missing or unselected GCC 10 on many hosts - Blocks V8 updates!

[targos]

Easy to spot because GCC 8 and 9 don't support -std=gnu++20

Latest C++20 CI: https://ci.nodejs.org/job/node-test-pull-request/56278/

Things remaining to update:

• Debian
• Ubuntu 18.04
  • Ubuntu 18.04 sharedlib containers
• https://ci.nodejs.org/label/ubi81_sharedlibs_openssl111fips_x64/
• armv7l (despite Ubuntu 20.04)

[targos]

https://ci.nodejs.org/job/node-test-commit-custom-suites-freestyle/ runs on the
ubuntu1804-64 label.
One option could be to use an ubuntu2004 or ubuntu2204 label.

[targos]

Should be easy to fix on SmartOS 20:

# pkgin se gcc10
gcc10-10.3.0         The GNU Compiler Collection (GCC) - 10.x Release Series
gcc10-libs-10.3.0    The GNU Compiler Collection (GCC) support shared libraries

[targos]

@nodejs/build. I pinned this issue.

The OP summarises what needs to be updated. It may be a small list, but it includes a large part of our CI hosts.

[richardlau]

• armv7l (despite Ubuntu 20.04)

Ah this one is because the select-compiler changes we made were to the section where "$SELECT_ARCH" = "ARM64" which won't be true for armv7l. I think my preference is to work towards adding x64 Ubuntu 20.04 into the test CI matrix and then move the compiler selection for Ubuntu 20.04 so that it is not architecture specific.