#!/usr/bin/env bash
# shellcheck disable=SC2034  # the BS_* context variables are read by lib.sh
# Build the two Linux GPU workers (igneum-worker-cuda from proto-cuda/nvrtc/worker.cpp, igneum-worker-opencl from
# proto-opencl/host.c) on igneum-build-1 instead of the Mac's zig cross-build (infra/cross/build-workers-linux.sh). Same sources
# and defines as that script; the box's clang++ and the CUDA 12.8 headers that provision.sh installs (no nvcc: both workers
# dlopen libcuda, libnvrtc and libOpenCL at run time). libstdc++ and libgcc are linked statically so a fleet box with an older
# libstdc++ (Ubuntu 22.04) runs them; the glibc ceiling of each binary is printed (a native Ubuntu 24.04 build; the HiveOS
# package keeps the Mac's zig build at glibc 2.36 until zig is on the box).
#
#   tools/workers-remote.sh [--out <dir>]        from any worktree of the igneum repo; artefacts in <worktree>/infra/cross/out-workers-box/
#
# Sources travel as HEAD through the mirror plus the overlay of proto-cuda and proto-opencl (lib.sh); the build takes a remote
# slot like every other build. Asked for by main on 6 October 2026 for the class v4 rehearsal (the fleet agent's generator-4 worker).
set -euo pipefail
HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck disable=SC2034
BS_TOOL=workers-remote
# shellcheck source=../infra/build-server/lib.sh
. "$HERE/../infra/build-server/lib.sh"
OUT=""; while [ $# -gt 0 ]; do case "$1" in --out) OUT="$2"; shift 2 ;; *) bs_die "unknown argument $1" ;; esac; done
bs_host
# the context by hand (bs_context wants a Cargo.toml): the igneum worktree root is the repo; lib.sh reads these
BS_TOP=$(git -C "$HERE" rev-parse --show-toplevel); BS_WT_ROOT="$BS_TOP"; BS_KIND=repo; BS_MIRROR="$BS_MIRROR_REPO"; BS_TOP_REL=.
BS_WT=$(basename "$BS_WT_ROOT"); BS_CRATE_REL=proto-cuda; BS_REMOTE_WT="$BS_ROOT_REMOTE/$BS_WT"; BS_REMOTE_CRATE="$BS_REMOTE_WT"
BS_BRANCH=$(git -C "$BS_TOP" branch --show-current 2>/dev/null || true); BS_SHA=$(git -C "$BS_TOP" rev-parse HEAD); [ -n "$BS_BRANCH" ] || BS_BRANCH="detached-$(git -C "$BS_TOP" rev-parse --short HEAD)"
BS_LOCAL_DIRS="proto-cuda proto-opencl"; BS_VENDOR_REPOS=""
[ -n "$OUT" ] || OUT="$BS_WT_ROOT/infra/cross/out-workers-box"
bs_log "workers from $BS_WT at $BS_SHA ($BS_BRANCH) -> $BS_HOST:$BS_REMOTE_WT (proto-cuda, proto-opencl)"
bs_sync_sources
PLACEHOLDER=proto-cuda/packs/igneum-devnet-v4-epoch0   # the OpenCL worker's compile-time pack, as build-workers-linux.sh
cmd='. /etc/profile.d/igneum-build.sh
CUDA=$(ls -d /usr/local/cuda-12.* 2>/dev/null | sort -V | tail -1); [ -n "$CUDA" ] || { echo "no CUDA headers under /usr/local/cuda-12.*: provision.sh step_cuda"; exit 2; }
[ -f /usr/include/CL/cl.h ] || { echo "no /usr/include/CL/cl.h: apt opencl-c-headers"; exit 2; }
mkdir -p out-workers-box
echo "workers-remote: $(clang++ --version | head -1); CUDA headers $CUDA/include; $(git rev-parse --short HEAD)"
clang++ -std=c++17 -O2 -Wall -Wextra -I proto-cuda/nvrtc -I "$CUDA/include" -static-libstdc++ -static-libgcc -o out-workers-box/igneum-worker-cuda proto-cuda/nvrtc/worker.cpp -ldl -lpthread || exit 1
clang -std=gnu99 -D_GNU_SOURCE -O2 -Wall -Wextra -Wno-format-truncation -DIGNEUM_CL_DYNAMIC -DCL_TARGET_OPENCL_VERSION=120 -I /usr/include -I '"$PLACEHOLDER"' -DIGNEUM_KERNEL_PATH='"'"'"kernel_bound.cl"'"'"' -static-libgcc -o out-workers-box/igneum-worker-opencl proto-opencl/host.c -ldl -lm -lpthread || exit 1
for b in igneum-worker-cuda igneum-worker-opencl; do printf "workers-remote: %s glibc ceiling %s, needs %s\n" "$b" "$(objdump -T out-workers-box/$b | grep -oE "GLIBC_[0-9.]+" | sort -V | tail -1)" "$(readelf -d out-workers-box/$b | grep -oE "\[lib[^]]+\]" | tr -d "[]" | tr "\n" " ")"; done'
BR_KIND=other BR_COMMAND="clang++ worker.cpp; clang host.c" BR_TARGET=x86_64-unknown-linux-gnu BR_ARTEFACTS="out-workers-box/igneum-worker-cuda out-workers-box/igneum-worker-opencl"; export BR_KIND BR_COMMAND BR_TARGET BR_ARTEFACTS
t0=$(date +%s); set +e; bs_remote_run "$BS_REMOTE_WT" "$BS_WT/proto-cuda workers" "$cmd" 2>&1 | tee "/tmp/workers-remote-$$.log"; rc=${PIPESTATUS[0]}; set -e
grep -E '^workers-remote:' "/tmp/workers-remote-$$.log" | sed 's/^/    /' >&2; rm -f "/tmp/workers-remote-$$.log"
[ "$rc" = 0 ] || bs_die "the worker build failed (rc $rc)"
bs_log "built in $(bs_fmt_secs $(( $(date +%s) - t0 )))"
mkdir -p "$OUT"
for b in igneum-worker-cuda igneum-worker-opencl; do
  bs_rsync -p "$BS_HOST:$BS_REMOTE_WT/out-workers-box/$b" "$OUT/$b" || bs_die "no $b on the box"
  bs_log "artefact $OUT/$b: $(bs_size "$OUT/$b") bytes, sha256 $(bs_sha256 "$OUT/$b"), $(file -b "$OUT/$b" | cut -c1-50)"
done
{ printf 'igneum workers, linux x86_64, built on igneum-build-1 with clang++ (static libstdc++) on %s from %s (%s); run-time libraries dlopen-ed\n' "$(date -u +%Y-%m-%dT%H:%M:%SZ)" "$BS_SHA" "$BS_BRANCH"; } > "$OUT/version.txt"
bs_wt_unlock