153 lines
4.7 KiB
Bash
Executable File
153 lines
4.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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cd "$(dirname "$0")"
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# LinuxCNC source basis: link probe modes reuse wasm-safe objects built from
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# linuxcnc-rs274-wasm-source-files.txt and add only a narrow probe main that
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# asserts LinuxCNC rs274ngc_pre/runtime symbols stay linked.
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usage() {
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echo "usage: $0 --mode rs274ngc-pre|runtime [manifest]" >&2
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}
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mode=
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manifest=linuxcnc-rs274-wasm-source-files.txt
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while [[ "$#" -gt 0 ]]; do
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case "$1" in
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--mode)
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if [[ "$#" -lt 2 ]]; then
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echo "missing --mode value" >&2
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exit 1
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fi
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mode=$2
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shift 2
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;;
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--help|-h)
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usage
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exit 0
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;;
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--*)
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usage
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echo "unknown wasm link probe option: $1" >&2
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exit 1
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;;
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*)
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manifest=$1
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shift
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;;
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esac
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done
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case "$mode" in
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rs274ngc-pre|runtime)
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;;
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"")
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usage
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echo "missing --mode" >&2
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exit 1
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;;
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*)
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usage
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echo "unknown wasm link probe mode: $mode" >&2
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exit 1
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;;
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esac
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linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
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cxx=${CXX:-g++}
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if [[ -z ${CXX:-} ]] && command -v ccache >/dev/null 2>&1; then
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cxx="ccache $cxx"
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fi
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build_jobs=${CNC_SIM_BUILD_JOBS:-8}
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if ! [[ "$build_jobs" =~ ^[1-9][0-9]*$ ]]; then
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echo "CNC_SIM_BUILD_JOBS must be a positive integer: $build_jobs" >&2
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exit 1
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fi
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cache_dir=${CNC_SIM_WASM_LINK_PROBE_CACHE_DIR-build/wasm-link-probe-cache}
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if [[ -z "$cache_dir" ]]; then
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echo "CNC_SIM_WASM_LINK_PROBE_CACHE_DIR must not be empty" >&2
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exit 1
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fi
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if [[ "$cache_dir" =~ [[:space:]] ]]; then
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echo "CNC_SIM_WASM_LINK_PROBE_CACHE_DIR must not contain whitespace: $cache_dir" >&2
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exit 1
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fi
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mkdir -p "$cache_dir"
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cache_dir=$(cd "$cache_dir" && pwd)
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if [[ "$cache_dir" == "/" ]]; then
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echo "CNC_SIM_WASM_LINK_PROBE_CACHE_DIR must not be the filesystem root" >&2
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exit 1
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fi
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preflight_cache_dir=${CNC_SIM_PREFLIGHT_CACHE_DIR:-"$cache_dir/preflight-cache"}
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object_mode=$mode
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main_source=core/wasm_shims/rs274ngc_pre_probe_main.cc
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target_name=rs274ngc_pre_probe
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common_flag_output=$(LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-wasm-common-cxxflags.sh --profile core20-sections)
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mapfile -t common_flags <<<"$common_flag_output"
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case "$mode" in
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rs274ngc-pre)
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grep -F 'LinuxCNC source basis: src/emc/rs274ngc/rs274ngc_pre.cc provides' "$main_source" >/dev/null
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;;
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runtime)
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object_mode=runtime
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main_source=core/wasm_shims/cnc_sim_wasm_runtime_probe_main.cc
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target_name=cnc_sim_wasm_runtime_probe
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common_flags+=(-DCNC_SIM_ENABLE_LINUXCNC_RS274_BACKEND)
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grep -F 'LinuxCNC source basis: src/emc/rs274ngc/rs274ngc_pre.cc provides read(),' "$main_source" >/dev/null
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;;
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esac
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object_output=$(CNC_SIM_PREFLIGHT_CACHE_DIR="$preflight_cache_dir" LINUXCNC_ROOT="$linuxcnc_root" ./build-linuxcnc-wasm-probe-objects.sh --mode "$object_mode" "$manifest")
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mapfile -t objects <<<"$object_output"
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manifest=$(cd "$(dirname "$manifest")" && pwd)/$(basename "$manifest")
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linuxcnc_root=$(cd "$linuxcnc_root" && pwd)
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mode_dir="$cache_dir/$mode"
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mkdir -p "$mode_dir"
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exec 8>"$mode_dir/link.lock"
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flock 8
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main_object="$mode_dir/main.o"
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target="$mode_dir/$target_name"
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signature="$mode_dir/link.signature"
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next_signature="$mode_dir/link.signature.next"
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{
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printf 'CXX=%s\n' "$cxx"
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printf 'PWD=%s\n' "$PWD"
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printf 'LINUXCNC_ROOT=%s\n' "$linuxcnc_root"
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printf 'MANIFEST=%s\n' "$manifest"
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printf 'MODE=%s\n' "$mode"
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printf 'BUILD_RULE_VERSION=1\n'
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printf 'COMMON_FLAGS='
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printf ' %s' "${common_flags[@]}"
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printf '\n'
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printf 'MAIN_SOURCE=%s\n' "$main_source"
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printf 'OBJECTS:\n'
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printf '%s\n' "${objects[@]}"
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} > "$next_signature"
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if [[ ! -f "$signature" ]] || ! cmp -s "$signature" "$next_signature"; then
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rm -f "$main_object" "$main_object.d" "$target" "$mode_dir/runtime.symbols"
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fi
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mv "$next_signature" "$signature"
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makefile="$mode_dir/link.mk"
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{
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printf 'CXX := %s\n' "$cxx"
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printf 'COMMON_FLAGS :='
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printf ' %s' "${common_flags[@]}"
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printf '\n\n'
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printf 'OBJECTS :='
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printf ' %s' "${objects[@]}"
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printf '\n\n'
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printf '.PHONY: all\n'
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printf 'all: %s\n\n' "$target"
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printf '%s: %s\n' "$main_object" "$main_source"
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printf '\t@$(CXX) $(COMMON_FLAGS) -MMD -MP -MF %s.d -c %s -o %s\n\n' "$main_object" "$main_source" "$main_object"
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printf '%s: $(OBJECTS) %s\n' "$target" "$main_object"
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printf '\t@$(CXX) $(OBJECTS) %s -Wl,--gc-sections -lfmt -o %s\n\n' "$main_object" "$target"
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printf '\n-include %s.d\n' "$main_object"
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} > "$makefile"
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make --output-sync=target -j"$build_jobs" -f "$makefile" >/dev/null
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printf '%s\n' "$target"
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