Feature/configurable arch baseline - #61
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This was referenced Jul 20, 2026
Rebased cleanly onto current main: this branch was previously based on the stale master branch instead of main, and a later attempt to resync tangled the branch with unrelated master-only history (a license-text change, changelog/aspell-dictionary updates from real upstream commits, none of which belong on this feature). Rebuilt as a single clean commit containing just the arch-baseline wiring, on top of current main. Add ARCH_TRIPLET/ARCH_MARCH_FLAGS build args (default x64-linux-v2) to build/docker-bake.hcl, build/linux/docker-bake.hcl, and build/linux/build.sh, matching the overlay triplets and Dockerfile wiring in the core and desktop-apps submodules (also rebuilt cleanly onto their current main branches), so a baseline x86-64 build can be produced by anyone who needs it without maintaining a second official toolchain. Signed-off-by: Peter P. Lupo <pplupo@gmail.com>
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Summary
Makes the target x86-64 microarchitecture baseline for Linux builds configurable, instead of hardcoding it. Adds vcpkg overlay triplets (
x64-linux-v2default,x64-linux-baselinefor plain x86-64) and threadsARCH_TRIPLET/ARCH_MARCH_FLAGSthrough the Docker bake config andbuild.sh.Why
Raising the official baseline to x86-64-v2 (SSE4.2/POPCNT) gives Qt and other vcpkg-built dependencies access to SIMD-optimized code paths instead of falling back to unoptimized generic code — but it drops support for older CPUs that predate v2. Rather than the team maintaining a second, permanently-tracked toolchain to support that hardware, this exposes the microarchitecture as a build-time parameter so anyone who needs a legacy build can produce one themselves from the same sources, without affecting the default build path.
Changes
core: addstriplets/x64-linux-v2.cmake(default) andtriplets/x64-linux-baseline.cmakevcpkg overlay triplets; wiresARCH_TRIPLET/ARCH_MARCH_FLAGSbuild args into the core cmake invocation in.docker/core.bake.Dockerfile.desktop-apps: same args threaded through.docker/desktop-apps.bake.Dockerfile's vcpkg/cmake invocation, since Qt is built there via the vcpkg manifest.ARCH_TRIPLET(defaultx64-linux-v2) andARCH_MARCH_FLAGS(default-march=x86-64-v2) inbuild/docker-bake.hclandbuild/linux/docker-bake.hcl, and exposes them as overridable environment variables inbuild/linux/build.sh.Usage
Default behavior is unchanged. To produce a baseline x86-64 build:
```sh
ARCH_TRIPLET=x64-linux-baseline ARCH_MARCH_FLAGS=-march=x86-64 ./build.sh
```
Scope / non-goals
Euro-Office/core#125
Euro-Office/desktop-apps#35
#61