Re: [PR PATCH] [Merged]: cross-arm-none-eabi*: update to 9.2, rework to include libgcc.a and libstdc++, newlib: build nano

[voidlinux-github@inbox.vuxu.org]

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There's a merged pull request on the void-packages repository

cross-arm-none-eabi*: update to 9.2, rework to include libgcc.a and libstdc++, newlib: build nano
https://github.com/void-linux/void-packages/pull/17827

Description:
For `cross-arm-none-eabi-gcc`:

I've reworked this to make it possible to include `libgcc.a`, rather than just the compiler itself. However, as `libstdc++` requires `newlib` to be built and present (which requires the gcc to build), skip building `libstdc++` at this stage. Instead, move it into a separate package.

I figured out the necessary changes mostly by reading the Arch pkgbuild.

For `cross-arm-none-eabi-libstdc++`:

As the gcc cannot include libstdc++ because of its newlib requirement, build it as a separate package. This is achieved by taking the gcc source tree, installing our previously built gcc as well as newlib (which was already packaged) and building libstdc++ on its own. I've successfully compiled things with this.

Two versions are provided, regular and nano. The nano version is built with -Os and no exceptions. You'd presumably use it with nano newlib.

For `cross-arm-none-eabi-newlib`:

We now build a nano variant.

@sirikid