ci: build vendored C++ across GCC 13/14/15 and clang#6
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Motivation
Zebra's vendored C++ crates (
zebra-script,librocksdb-sys) can break onspecific C++ toolchains. GCC 15+ in particular fails to compile the vendored
headers that rely on transitive
<cstdint>inclusion. There is currently no CIcoverage that confirms the workspace builds across the C++ compilers users are
likely to have.
Solution
Add a CI workflow that builds the vendored C++ crates against a matrix of
toolchains in pinned containers:
gcc:13,gcc:14,gcc:15silkeh/clang:latest)Each matrix entry sets
CC/CXXso thecccrate uses the right compiler,installs the build deps, and runs
cargo build -p zebra-script(which alsocompiles
librocksdb-sysfrom source).fail-fast: falsekeeps every toolchainreporting independently.
Test evidence
Workflow runs on this PR; green across all four matrix legs confirms the
vendored C++ builds on each toolchain.
AI disclosure
Used Claude Code to author the workflow file.