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build_osx: --shared + skip geometry-writer plug-ins (~3x bundle shrink)

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Mirrors the Rocky workflow's two-part size reduction (27249770e
"Reduce Rocky package size") on macOS:

1. Pass `--shared` to nix/build-all.py. The default builds
   IfcOpenShell as static libs, which means every plug-in dylib
   (schemas × 8, kernels × 3, mappings × 8, writers × 8, document
   serializers × ~4, linework processing) statically embeds a full
   copy of libIfcParse + libIfcGeom. With --shared the plug-ins
   reference @rpath/libIfcParse.dylib + @rpath/libIfcGeom.dylib and
   the per-plug-in dylib drops from ~30-50 MB to a few MB each.
   Dominant size win.

2. Filter `ifcopenshell.geometry.writer.*.dylib` out of BonsaiViewer's
   plug-in staging step in src/bonsaiviewer/CMakeLists.txt. These are
   the per-schema OBJ / glTF / DAE / STP / IGS / SVG / TTL export
   converters — heavy because each one inlines the full schema, and
   BonsaiViewer is a viewer, never an exporter, so they're pure
   deadweight inside the bundle. Additive on top of --shared.

Bundle went 300 MB → expected ~100 MB, in line with Linux (~100 MB)
and Windows (~80 MB).

The IFCOPENSHELL_BUILD_PYTHON_WRAPPER=off gate is unchanged for now
— once we confirm BonsaiViewer.app size + functionality look sane,
we can ungate the Python wrapper and see if shared-builds-on-macOS
shake out its install issues too.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Dion Moult
2026-06-03 08:06:42 +10:00
parent 37aa68e66c
commit ddee88bed3
2 changed files with 13 additions and 1 deletions
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src/bonsaiviewer/CMakeLists.txt
+7
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@@ -180,6 +180,13 @@ if(APPLE)
install(CODE [[
file(GLOB _ifc_plugins
"${CMAKE_INSTALL_PREFIX}/lib/ifcopenshell.*.dylib")
# Skip ifcopenshell.geometry.writer.*.dylib — those are heavy
# schema-specific OBJ / glTF / DAE / STP / IGS / SVG / TTL export
# converters. BonsaiViewer is a viewer; it never writes geometry
# out, so they're pure deadweight. Mirrors the Rocky workflow's
# filter in `stage_runtime_payload` (see 27249770e). Cuts the
# macOS .app by ~100-150 MB.
list(FILTER _ifc_plugins EXCLUDE REGEX "ifcopenshell\\.geometry\\.writer\\.")
if(_ifc_plugins)
message(STATUS "Staging IfcOpenShell plug-ins into BonsaiViewer.app/Contents/Frameworks")
file(COPY ${_ifc_plugins}