fix: statically link libstdc++/libgcc so releases run on Ubuntu 20.04#283
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blondfrogs wants to merge 1 commit into
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fix: statically link libstdc++/libgcc so releases run on Ubuntu 20.04#283blondfrogs wants to merge 1 commit into
blondfrogs wants to merge 1 commit into
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CI builds inside ubuntu:20.04 but installs gcc-11 from the ubuntu-toolchain-r/test PPA for C++20 support, which brings a newer libstdc++.so.6 into the build environment. The resulting fluxd dynamic-links against it and fails at runtime on stock Ubuntu 20.04 with "GLIBCXX_3.4.29 not found" / "CXXABI_1.3.13 not found". - zcutil/build.sh: pass -static-libstdc++ -static-libgcc via LDFLAGS so the C++ runtime is baked into the binary, decoupling it from the build host's libstdc++ version. - depends/packages/zeromq.mk: strip -lstdc++ from libzmq.pc Libs.private. pkg-config injects this into the link line, and an explicit -lstdc++ overrides -static-libstdc++ (which only affects gcc's implicit libstdc++ link). Removing it lets static-libstdc++ take effect. Verified end-to-end by rebuilding the same source in a fresh ubuntu:20.04 container with these patches: ldd shows no libstdc++.so.6 dependency, max GLIBC required is 2.30, and the binary runs cleanly on stock ubuntu:20.04. No CI workflow changes needed. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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CI builds inside ubuntu:20.04 but installs gcc-11 from the ubuntu-toolchain-r/test PPA for C++20 support, which brings a newer libstdc++.so.6 into the build environment. The resulting fluxd dynamic-links against it and fails at runtime on stock Ubuntu 20.04 with "GLIBCXX_3.4.29 not found" / "CXXABI_1.3.13 not found".
zcutil/build.sh: pass -static-libstdc++ -static-libgcc via LDFLAGS so the C++ runtime is baked into the binary, decoupling it from the build host's libstdc++ version.
depends/packages/zeromq.mk: strip -lstdc++ from libzmq.pc Libs.private. pkg-config injects this into the link line, and an explicit -lstdc++ overrides -static-libstdc++ (which only affects gcc's implicit libstdc++ link). Removing it lets static-libstdc++ take effect.
Verified end-to-end by rebuilding the same source in a fresh ubuntu:20.04 container with these patches: ldd shows no libstdc++.so.6 dependency, max GLIBC required is 2.30, and the binary runs cleanly on stock ubuntu:20.04. No CI workflow changes needed.