feat(aarch64): default to musl-static toolchain on non-x86 Linux#148
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Bare `mcpp build` (new project, no [toolchain]) on aarch64 tried to install the glibc default gcc@16.1.0 + glibc + linux-headers, which have no aarch64 assets (HTTP 404). On non-x86_64 Linux, default to gcc@15.1.0-musl instead: it's published for aarch64, self-contained (skip glibc/linux-headers deps), and yields portable static binaries (ideal for aarch64/Termux). x86_64 keeps the glibc default. Seeds the host triple so the <host>-linux-musl-g++ frontend resolves for the no---target default. Also: fresh-install CI self-hosts mcpp AND xlings via --target aarch64-linux-musl (their manifests pin a glibc default).
Sunrisepeak
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Jun 23, 2026
…mcpp, then it cross-builds aarch64 The published bootstrap mcpp (0.0.58) predates aarch64 cross-build support (#146/#148), so 'mcpp build --target aarch64-linux-musl' resolved the x86_64 host musl-gcc and produced no aarch64 binary. Build this release's x86_64 mcpp first (it has the feature), then cross-build aarch64 with it. Verified locally: fresh 0.0.59 resolves aarch64-linux-musl-gcc and emits an ARM aarch64 static ELF.
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Makes bare
mcpp buildwork out-of-the-box on aarch64. Previously the glibc default (gcc@16.1.0 + glibc + linux-headers) 404'd on aarch64 (no glibc toolchain published). On non-x86_64 Linux, default togcc@15.1.0-musl— published, self-contained, portable static (ideal for aarch64/Termux). x86_64 unchanged.Found by the native fresh-install run: install loop worked, bare build hit the glibc 404. Also updates that CI to self-host mcpp+xlings via
--target aarch64-linux-musl.