Upgrading glibc version

[MerinoSheep]

Hi,

I'm encountering a build failure while attempting to build ncurses bzlmod similar to f0rmiga/gcc-toolchain#212 due to missing macros that require glibc 2.27 or higher.

From what I see the project prefers keeping glibc as low as possible for maximum compatibility. Curious if its worth it to bump up an incremental amount or take a different path (ex. custom sysroot)?

[f0rmiga]

You can use a custom build of https://github.com/f0rmiga/gcc-builds and override the gcc_versions here:

gcc-toolchain/toolchain/defs.bzl

Lines 425 to 429 in 8fe3945

	"gcc_versions": attr.string(
	default = json.encode(AVAILABLE_GCC_VERSIONS),
	doc = "A JSON dictionary of GCC versions to their download URLs and SHA256 hashes." +
	" The structure is {<gcc_version>: {<target_arch>: {url: <url>, sha256: <sha256>}}}.",
	),

[f0rmiga]

The latest GCC builds are shipping with glibc 2.28. https://github.com/f0rmiga/gcc-builds/releases/tag/03062026