Files
punktfunk/packaging/rpm/build-rpm.sh
T
enricobuehler 822fde1e89
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fix(rpm): derive the libcuda link stub from source (fixes undefined cu* symbols)
The Fedora RPM build linked punktfunk-host against a synthesized libcuda stub
with a FROZEN symbol list baked into ci/fedora-rpm.Dockerfile. The priority-
stream work added cuCtxGetStreamPriorityRange / cuStreamCreateWithPriority /
cuStreamSynchronize / cuMemcpy2DAsync_v2, which weren't in that list, so the
link failed with "undefined symbol".

build-rpm.sh now regenerates /usr/lib64/libcuda.so.1 from every cu* symbol the
host source references (grep of crates/punktfunk-host/src), before rpmbuild — so
a new cu* call can never silently break the link again. Self-maintaining and
needs no builder-image rebuild (it supersedes the Dockerfile's frozen stub).
Verified the 23 extracted symbols compile and cover the 4 that were undefined.

Also fix the bogus %changelog weekday (Sun -> Mon, Jun 15 2026 is a Monday) that
rpmbuild warned on.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-19 08:29:16 +00:00

65 lines
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#!/usr/bin/env bash
# Build the punktfunk-host RPM from the committed tree, for the Gitea RPM registry (Bazzite).
#
# Counterpart to ../debian/build-deb.sh. The library Requires (libavcodec.so.NN, …) are
# auto-generated by rpmbuild from the binary it links — so build this in the Fedora 43 image
# (ci/fedora-rpm.Dockerfile) to match Bazzite's sonames. libcuda is excluded in the spec.
#
# Usage: PF_VERSION=0.0.1 [PF_RELEASE=0.ci42.gdeadbee] bash packaging/rpm/build-rpm.sh
# Output: dist/punktfunk-<version>-<release>.<arch>.rpm (+ the -debuginfo/-debugsource subpkgs)
set -euo pipefail
PF_VERSION="${PF_VERSION:-0.2.0}"
PF_RELEASE="${PF_RELEASE:-1}"
# PF_WITH_WEB=1 builds the punktfunk-web subpackage too (needs `bun` on PATH — present in the CI
# builder image, not in a plain mock chroot). Default off so a bare `rpmbuild`/COPR still works.
WEB_OPT=()
[ "${PF_WITH_WEB:-0}" = "1" ] && WEB_OPT=(--with web)
ROOTDIR="$(cd "$(dirname "$0")/../.." && pwd)"
cd "$ROOTDIR"
TOP="$(mktemp -d)"
trap 'rm -rf "$TOP"' EXIT
mkdir -p "$TOP"/{SOURCES,SPECS,BUILD,BUILDROOT,RPMS,SRPMS}
# Source tarball with the prefix %autosetup expects (punktfunk-<version>/). From HEAD so the
# build is reproducible from a commit (CI checks one out); the spec is read from the working
# tree directly, so spec edits apply without a re-commit.
git archive --format=tar.gz --prefix="punktfunk-${PF_VERSION}/" \
-o "$TOP/SOURCES/punktfunk-${PF_VERSION}.tar.gz" HEAD
# libcuda link stub (self-maintaining). The zerocopy FFI links the NVIDIA driver lib (-lcuda), but
# the CI builder has no GPU and never RUNS CUDA. Synthesize a stub libcuda that DEFINES every cu*
# driver symbol the host source references, derived from the source HERE so a newly-added cu* call
# can't silently break the link. (ci/fedora-rpm.Dockerfile ships a frozen list that went stale —
# undefined cuStreamCreateWithPriority/cuMemcpy2DAsync_v2/…; this regen supersedes it.) Defining
# extra unused symbols is harmless; a missing one fails the link. Only when /usr/lib64 is writable
# (CI image runs as root) — COPR/mock provides the real cuda-cudart-devel stub instead.
if [ "$(id -u)" = 0 ] && [ -d /usr/lib64 ]; then
CU_SYMS="$(grep -rhoE '\bcu[A-Z][A-Za-z0-9_]*' crates/punktfunk-host/src/ | sort -u || true)"
if [ -n "$CU_SYMS" ]; then
STUB_C="$(mktemp --suffix=.c)"
for s in $CU_SYMS; do printf 'int %s(void){return 0;}\n' "$s" >> "$STUB_C"; done
gcc -shared -fPIC -Wl,-soname,libcuda.so.1 -o /usr/lib64/libcuda.so.1 "$STUB_C"
ln -sf libcuda.so.1 /usr/lib64/libcuda.so
rm -f "$STUB_C"; ldconfig 2>/dev/null || true
echo "== libcuda stub regenerated from source: $(printf '%s\n' "$CU_SYMS" | wc -l) symbols =="
fi
fi
# --nodeps: the spec's BuildRequires (cargo, rust, *-devel) are for COPR's mock chroot, which
# resolves them from RPMs. Our builder image provides the toolchain via rustup (so
# rust-toolchain.toml's pinned channel works) and the -devel libs via dnf, neither of which
# rpmbuild's RPM-level check sees — skip it; a genuinely missing dep fails the compile/link.
rpmbuild -bb --nodeps "${WEB_OPT[@]}" \
--define "_topdir $TOP" \
--define "pf_version ${PF_VERSION}" \
--define "pf_release ${PF_RELEASE}" \
packaging/rpm/punktfunk.spec
mkdir -p dist
find "$TOP/RPMS" -name '*.rpm' -exec cp -v {} dist/ \;
echo "== Requires (must NOT contain libcuda) =="
rpm -qp --requires dist/punktfunk-${PF_VERSION}-*.rpm 2>/dev/null | grep -iE 'cuda|nvidia' \
&& echo " !! NVIDIA/CUDA leak !!" || echo " clean"