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DOC: Add conda-forge staged-recipes submission for libitk-wrapping
Add conda-forge-ready recipe files (meta.yaml, build.sh, bld.bat) for the libitk-wrapping package. These are prepared for submission to conda-forge/staged-recipes once the ITK install rule changes are merged upstream and an ITK 6 release is tagged. The recipe builds ITK C++ with Python wrapping using conda-forge system libraries and includes the CMAKE_FIND_ROOT_PATH settings required by conda-build cross-compilation. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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‎conda-forge/README.md‎

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# conda-forge Submission
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This directory contains recipe files for submitting ITK packages to conda-forge
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via [staged-recipes](https://github.com/conda-forge/staged-recipes).
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## Packages
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### libitk-wrapping
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A conda package containing ITK C++ libraries with full Python wrapping
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artifacts (SWIG interfaces, CastXML outputs, compiled Python modules).
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This package enables building ITK Python wheels and remote module wheels
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without recompiling ITK from source.
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### Submission Process
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1. Fork [conda-forge/staged-recipes](https://github.com/conda-forge/staged-recipes)
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2. Copy `libitk-wrapping/` into `recipes/libitk-wrapping/`
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3. Open a PR against staged-recipes
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4. Address conda-forge review feedback
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5. Once merged, a feedstock will be created automatically
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### Updating the existing libitk feedstock
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The existing [libitk-feedstock](https://github.com/conda-forge/libitk-feedstock)
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(currently at v5.4.5) should be updated to ITK 6 separately. The `libitk-wrapping`
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package will depend on `libitk-devel` once both are at ITK 6.
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## Environment Variables for Custom Builds
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When building from a non-default ITK branch (e.g., for PR testing):
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```bash
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export ITK_GIT_URL="https://github.com/BRAINSia/ITK.git"
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export ITK_GIT_TAG="itk-conda-pythonpackage-support"
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```

‎conda-forge/libitk-wrapping/bld.bat‎

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@echo off
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setlocal enabledelayedexpansion
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set BUILD_DIR=%SRC_DIR%\..\build
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mkdir %BUILD_DIR%
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cd %BUILD_DIR%
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cmake ^
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-G "Ninja" ^
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%CMAKE_ARGS% ^
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-D BUILD_SHARED_LIBS:BOOL=ON ^
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-D BUILD_TESTING:BOOL=OFF ^
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-D BUILD_EXAMPLES:BOOL=OFF ^
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-D CMAKE_BUILD_TYPE:STRING=Release ^
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-D "CMAKE_INSTALL_PREFIX=%LIBRARY_PREFIX%" ^
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^
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-D ITK_WRAP_PYTHON:BOOL=ON ^
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-D ITK_WRAP_DOC:BOOL=ON ^
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-D ITK_LEGACY_SILENT:BOOL=ON ^
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-D CMAKE_POSITION_INDEPENDENT_CODE:BOOL=ON ^
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^
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-D ITK_WRAP_unsigned_short:BOOL=ON ^
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-D ITK_WRAP_double:BOOL=ON ^
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-D ITK_WRAP_complex_double:BOOL=ON ^
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-D "ITK_WRAP_IMAGE_DIMS:STRING=2;3;4" ^
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^
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-D WRAP_ITK_INSTALL_COMPONENT_IDENTIFIER:STRING=PythonWheel ^
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-D WRAP_ITK_INSTALL_COMPONENT_PER_MODULE:BOOL=ON ^
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^
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-D ITK_USE_SYSTEM_EXPAT:BOOL=ON ^
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-D ITK_USE_SYSTEM_HDF5:BOOL=ON ^
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-D ITK_USE_SYSTEM_JPEG:BOOL=ON ^
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-D ITK_USE_SYSTEM_PNG:BOOL=ON ^
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-D ITK_USE_SYSTEM_TIFF:BOOL=ON ^
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-D ITK_USE_SYSTEM_ZLIB:BOOL=ON ^
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-D ITK_USE_SYSTEM_FFTW:BOOL=ON ^
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-D ITK_USE_SYSTEM_EIGEN:BOOL=ON ^
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-D ITK_USE_FFTWD:BOOL=ON ^
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-D ITK_USE_FFTWF:BOOL=ON ^
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^
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-D ITK_BUILD_DEFAULT_MODULES:BOOL=ON ^
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-D Module_ITKReview:BOOL=ON ^
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-D Module_ITKTBB:BOOL=ON ^
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-D Module_MGHIO:BOOL=ON ^
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-D Module_ITKIOTransformMINC:BOOL=ON ^
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-D Module_GenericLabelInterpolator:BOOL=ON ^
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-D Module_AdaptiveDenoising:BOOL=ON ^
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^
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-D ITK_USE_KWSTYLE:BOOL=OFF ^
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-D "ITK_DEFAULT_THREADER:STRING=Pool" ^
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^
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"%SRC_DIR%"
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if errorlevel 1 exit /b 1
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cmake --build . --config Release
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if errorlevel 1 exit /b 1
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cmake --install . --config Release
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if errorlevel 1 exit /b 1

‎conda-forge/libitk-wrapping/build.sh‎

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#!/bin/bash
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set -euo pipefail
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# Build ITK C++ with Python wrapping for conda-forge.
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# Produces headers, shared libraries, CMake config, and all wrapping
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# metadata (SWIG .i/.idx/.mdx, Python stubs) needed by downstream
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# ITK remote modules.
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BUILD_DIR="${SRC_DIR}/../build"
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mkdir -p "${BUILD_DIR}"
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cd "${BUILD_DIR}"
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# TBB: enabled on Linux, disabled on macOS (conda TBB issues)
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use_tbb=ON
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if [ "$(uname)" = "Darwin" ]; then
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use_tbb=OFF
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fi
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# Cross-compilation support
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if [[ "${CONDA_BUILD_CROSS_COMPILATION:-0}" == "1" ]]; then
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try_run_results="${RECIPE_DIR}/TryRunResults-${target_platform}.cmake"
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if [[ -f "${try_run_results}" ]]; then
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CMAKE_ARGS="${CMAKE_ARGS} -C ${try_run_results}"
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fi
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fi
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cmake \
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-G "Ninja" \
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${CMAKE_ARGS} \
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-D BUILD_SHARED_LIBS:BOOL=ON \
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-D BUILD_TESTING:BOOL=OFF \
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-D BUILD_EXAMPLES:BOOL=OFF \
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-D CMAKE_BUILD_TYPE:STRING=Release \
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-D "CMAKE_INSTALL_PREFIX=${PREFIX}" \
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\
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-D ITK_WRAP_PYTHON:BOOL=ON \
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-D ITK_WRAP_DOC:BOOL=ON \
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-D ITK_LEGACY_SILENT:BOOL=ON \
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-D CMAKE_POSITION_INDEPENDENT_CODE:BOOL=ON \
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\
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-D ITK_WRAP_unsigned_short:BOOL=ON \
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-D ITK_WRAP_double:BOOL=ON \
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-D ITK_WRAP_complex_double:BOOL=ON \
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-D "ITK_WRAP_IMAGE_DIMS:STRING=2;3;4" \
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\
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-D WRAP_ITK_INSTALL_COMPONENT_IDENTIFIER:STRING=PythonWheel \
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-D WRAP_ITK_INSTALL_COMPONENT_PER_MODULE:BOOL=ON \
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\
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-D ITK_USE_SYSTEM_EXPAT:BOOL=ON \
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-D ITK_USE_SYSTEM_HDF5:BOOL=ON \
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-D ITK_USE_SYSTEM_JPEG:BOOL=ON \
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-D ITK_USE_SYSTEM_PNG:BOOL=ON \
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-D ITK_USE_SYSTEM_TIFF:BOOL=ON \
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-D ITK_USE_SYSTEM_ZLIB:BOOL=ON \
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-D ITK_USE_SYSTEM_FFTW:BOOL=ON \
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-D ITK_USE_SYSTEM_EIGEN:BOOL=ON \
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-D ITK_USE_FFTWD:BOOL=ON \
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-D ITK_USE_FFTWF:BOOL=ON \
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\
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-D ITK_BUILD_DEFAULT_MODULES:BOOL=ON \
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-D Module_ITKReview:BOOL=ON \
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-D Module_ITKTBB:BOOL=${use_tbb} \
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-D Module_MGHIO:BOOL=ON \
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-D Module_ITKIOTransformMINC:BOOL=ON \
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-D Module_GenericLabelInterpolator:BOOL=ON \
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-D Module_AdaptiveDenoising:BOOL=ON \
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\
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-D ITK_USE_KWSTYLE:BOOL=OFF \
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-D NIFTI_SYSTEM_MATH_LIB= \
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-D GDCM_USE_COREFOUNDATION_LIBRARY:BOOL=OFF \
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-D "ITK_DEFAULT_THREADER:STRING=Pool" \
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\
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-D "CMAKE_FIND_ROOT_PATH:PATH=${PREFIX}" \
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-D "CMAKE_FIND_ROOT_PATH_MODE_INCLUDE:STRING=ONLY" \
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-D "CMAKE_FIND_ROOT_PATH_MODE_LIBRARY:STRING=ONLY" \
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-D "CMAKE_FIND_ROOT_PATH_MODE_PROGRAM:STRING=NEVER" \
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-D "CMAKE_FIND_ROOT_PATH_MODE_PACKAGE:STRING=ONLY" \
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-D "CMAKE_FIND_FRAMEWORK:STRING=NEVER" \
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-D "CMAKE_FIND_APPBUNDLE:STRING=NEVER" \
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-D "CMAKE_PROGRAM_PATH=${BUILD_PREFIX}" \
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\
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"${SRC_DIR}"
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cmake --build . --config Release
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cmake --install . --config Release

‎conda-forge/libitk-wrapping/meta.yaml‎

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{% set version = "6.0.0" %}
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{% set itk_tag = "v" + version %}
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package:
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name: libitk-wrapping
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version: {{ version }}
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source:
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url: https://github.com/InsightSoftwareConsortium/ITK/archive/{{ itk_tag }}.tar.gz
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# sha256: UPDATE_WITH_ACTUAL_HASH
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build:
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number: 0
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skip: true # [win and vc<14]
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requirements:
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build:
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- cmake >=3.26
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- ninja
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- {{ compiler('c') }}
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- {{ stdlib("c") }}
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- {{ compiler('cxx') }}
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host:
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- python
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- swig >=4.1
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- castxml
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- expat # [not win]
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- hdf5
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- libjpeg-turbo
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- libtiff
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- libpng # [not win]
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- eigen
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- zlib # [not win]
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- fftw
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- tbb-devel
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- doxygen
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run:
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- python
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- tbb
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- hdf5
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- fftw
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- libjpeg-turbo
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- libtiff
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- libpng # [not win]
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- expat # [not win]
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- zlib # [not win]
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test:
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commands:
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# Verify CMake config is installed and discoverable
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- test -d $PREFIX/lib/cmake/ITK* # [not win]
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- if not exist %LIBRARY_LIB%\\cmake\\ITK* exit 1 # [win]
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# Verify Python wrapping modules are installed
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- test -f $PREFIX/lib/python*/site-packages/itk/__init__.py # [not win]
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# Verify wrapping metadata is installed
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- test -d $PREFIX/lib/cmake/ITK*/WrapITK/Typedefs # [not win]
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about:
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home: https://itk.org
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license: Apache-2.0
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license_file:
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- LICENSE
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- NOTICE
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summary: >
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ITK C++ libraries with Python wrapping artifacts for building
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ITK Python wheels and remote module packages.
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dev_url: https://github.com/InsightSoftwareConsortium/ITK
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extra:
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recipe-maintainers:
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- hjmjohnson
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- thewtex
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- blowekamp

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