Conda recipe for teaserpp-python (#125)

* Checkpoint conda recipe for teaserpp-python

* Use same version of python for conda build and runtime environment

* Update conda recipe

Author: analog-cbarber

conda-recipes/README.md

@@ -0,0 +1,32 @@
+# Conda recipes for TEASER++
+
+This directory contains recipes for building conda packages
+for TEASER++.
+
+Ideally, someone will eventually [set up a conda-forge feedstock](https://conda-forge.org/docs/maintainer/adding_pkgs.html)
+so that users will be able to install from [conda-forge](https://conda-forge.org/#about).
+
+In the meantime, you can use these recipes to build the package for inclusion in privately maintained
+conda repositories.
+
+Currently, there is only a recipe for `teaserpp-python`, which provides a minimal python binding
+(e.g. no header files, only the shared libraries needed at runtime).
+
+To build this, run this command from this directory on each platform you want to support:
+
+```
+conda build teaserpp-python
+```
+
+This will build versions of the package for multiple python versions (currently 3.6 through 3.9).
+You can build a restricted set of python versions by specifying the `--variants` flag:
+
+```
+conda build --variants '{"python" : ["3.7", "3.8"]}' teaserpp-python'
+```
+
+This recipe has been run on linux and macos. To run on Windows, someone will need to
+add a `build.bat` file corresponding to `build.sh`, and it is possible that some other
+tweaks may be required if there are dependency differences on Windows.
+
+

conda-recipes/teaserpp-python/build.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+set -x
+echo $PATH
+cd $SRC_DIR
+mkdir build
+cd build
+cmake \
+    -DTEASERPP_PYTHON_VERSION=${PY_VER} \
+    -DPython3_EXECUTABLE=${PYTHON} \
+    -DCMAKE_INSTALL_LIBDIR=lib \
+    -DCMAKE_INSTALL_PREFIX=${PREFIX} \
+    -DLLVM_TOOLS_BINARY_DIR=${PREFIX}/bin \
+    ..
+make teaserpp_python
+# make install does too much. We only need the regisration library.
+cp pmc-build/libpmc.* ${PREFIX}/lib
+cp teaser/libteaser_registration.* ${PREFIX}/lib
+cd python
+${PYTHON} -m pip install .

conda-recipes/teaserpp-python/conda_build_config.yaml

@@ -0,0 +1,4 @@
+python:
+  - 3.6
+  - 3.7
+  - 3.8

conda-recipes/teaserpp-python/meta.yaml

@@ -0,0 +1,40 @@
+package:
+  name: teaserpp-python
+  version: 2.0.1
+
+source:
+  - path: ../../cmake
+    folder: cmake
+  - path: ../../python
+    folder: python
+  - path: ../../teaser
+    folder: teaser
+  - path: ../../doc
+    folder: doc
+  - path: ../../test
+    folder: test
+  - path: ../../CMakeLists.txt
+
+# TODO build for different python versions
+# TODO try without llvm-openmp
+
+requirements:
+  build:
+    - boost
+    - python {{ python }}
+    - setuptools
+    - cmake
+    - make
+    - eigen
+    - {{ compiler('c') }}
+    - {{ compiler('cxx') }}
+    - llvm-openmp
+  host:
+    - python {{ python }}
+  run:
+    - python {{ python }}
+  
+about:
+  home: https://github.com/MIT-SPARK/TEASER-plusplus
+  license: GPL3
+  summary: Python binding for TEASER++

python/CMakeLists.txt

@@ -19,7 +19,7 @@ target_link_libraries(teaserpp_python PUBLIC teaser_registration)
 # fix for clang
 # see: https://github.com/pybind/pybind11/issues/1818
 if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    target_compile_options(teaserpp_python PUBLIC -fsized-deallocation)
+    target_compile_options(teaserpp_python PUBLIC -fno-sized-deallocation)
 endif ()
 
 # make sure to output the build file to teaserpp_python folder