feat: establish reproducible FreeCAD web compatibility baseline

scripts/build-camotics-native.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+camotics_dir="$repo_root/CAMotics"
+cbang_dir="$repo_root/.cache/camotics-native/cbang"
+cbang_revision="9b6672a0e2b800a909d799ffa3ab46774cf171b8"
+jobs=${CAMOTICS_BUILD_JOBS:-$(nproc)}
+
+test -f "$camotics_dir/SConstruct"
+command -v git >/dev/null
+command -v scons >/dev/null
+command -v qmake >/dev/null
+command -v moc >/dev/null
+command -v uic >/dev/null
+command -v lrelease >/dev/null
+command -v pkg-config >/dev/null
+python3 -c 'import six' >/dev/null
+test -f /usr/include/v8/v8.h
+pkg-config --exists Qt5Core Qt5Gui Qt5Widgets Qt5OpenGL Qt5Network Qt5WebSockets
+
+if [[ ! -d "$cbang_dir/.git" ]]; then
+  mkdir -p "$(dirname "$cbang_dir")"
+  git clone --filter=blob:none https://github.com/CauldronDevelopmentLLC/cbang.git "$cbang_dir"
+fi
+current_revision=$(git -C "$cbang_dir" rev-parse HEAD)
+if [[ "$current_revision" != "$cbang_revision" ]]; then
+  git -C "$cbang_dir" fetch --depth=1 origin "$cbang_revision"
+  git -C "$cbang_dir" checkout --detach "$cbang_revision"
+fi
+test "$(git -C "$cbang_dir" rev-parse HEAD)" = "$cbang_revision"
+test -z "$(git -C "$cbang_dir" status --porcelain)"
+
+export QT_SELECT=qt5
+export CBANG_HOME="$cbang_dir"
+
+# The Debian V8 package is built without pointer compression. Keep C! and the
+# CAMotics embedder on the same ABI instead of relying on the host default.
+cbang_build_marker="$repo_root/.cache/camotics-native/cbang-build-v8-noptr-cxx17"
+if [[ ! -f "$cbang_build_marker" || "$(<"$cbang_build_marker")" != "$cbang_revision" || ! -f "$cbang_dir/lib/libcbang.a" ]]; then
+  scons -C "$cbang_dir" strict=0 cxxstd=c++17 v8_compress_pointers=0 -j "$jobs"
+  printf '%s\n' "$cbang_revision" > "$cbang_build_marker"
+fi
+scons -C "$camotics_dir" strict=0 cxxstd=c++17 v8_compress_pointers=0 \
+  with_gui=1 with_tpl=1 camotics tplang gcodetool planner camsim build/camotics.so -j "$jobs"
+
+"$camotics_dir/camotics" --version
+"$camotics_dir/tplang" --version
+sha256sum "$camotics_dir/camotics" "$camotics_dir/tplang"