Test cross-compiling to build arm binaries

.ci_support/linux_aarch64_.yaml

@@ -0,0 +1,42 @@
+BUILD:
+- aarch64-conda_cos7-linux-gnu
+bzip2:
+- '1'
+c_compiler:
+- gcc
+c_compiler_version:
+- '11'
+cdt_arch:
+- aarch64
+cdt_name:
+- cos7
+channel_sources:
+- conda-forge,defaults
+channel_targets:
+- tiledb main
+cxx_compiler:
+- gxx
+cxx_compiler_version:
+- '11'
+docker_image:
+- quay.io/condaforge/linux-anvil-cos7-x86_64
+libdeflate:
+- '1.14'
+pin_run_as_build:
+  python:
+    min_pin: x.x
+    max_pin: x.x
+python:
+- 3.10.* *_cpython
+- 3.7.* *_cpython
+- 3.8.* *_cpython
+- 3.9.* *_cpython
+target_platform:
+- linux-aarch64
+xz:
+- '5'
+zip_keys:
+- - c_compiler_version
+  - cxx_compiler_version
+zlib:
+- '1.2'

.ci_support/osx_arm64_.yaml

@@ -0,0 +1,37 @@
+MACOSX_DEPLOYMENT_TARGET:
+- '11.0'
+bzip2:
+- '1'
+c_compiler:
+- clang
+c_compiler_version:
+- '14'
+channel_sources:
+- conda-forge,defaults
+channel_targets:
+- tiledb main
+cxx_compiler:
+- clangxx
+cxx_compiler_version:
+- '14'
+libdeflate:
+- '1.14'
+macos_machine:
+- arm64-apple-darwin20.0.0
+pin_run_as_build:
+  python:
+    min_pin: x.x
+    max_pin: x.x
+python:
+- 3.10.* *_cpython
+- 3.8.* *_cpython
+- 3.9.* *_cpython
+target_platform:
+- osx-arm64
+xz:
+- '5'
+zip_keys:
+- - c_compiler_version
+  - cxx_compiler_version
+zlib:
+- '1.2'

conda-forge.yml

@@ -1,3 +1,6 @@
+build_platform:
+  linux_aarch64: linux_64
+  osx_arm64: osx_64
 channels:
   sources:
     - conda-forge

recipe/conda_build_config.yaml

@@ -7,17 +7,17 @@ channel_sources:
 channel_targets:
   - tiledb main
 numpy:
-  - 1.20   # [not (osx and arm64)]
-  - 1.20
-  - 1.20
+#   - 1.20   # [not (osx and arm64)]
+#   - 1.20
+#   - 1.20
   - 1.21
 python:
-  - 3.7.* *_cpython   # [not (osx and arm64)]
-  - 3.8.* *_cpython
-  - 3.9.* *_cpython
+#   - 3.7.* *_cpython   # [not (osx and arm64)]
+#   - 3.8.* *_cpython
+#   - 3.9.* *_cpython
   - 3.10.* *_cpython
 python_impl:
-  - cpython   # [not (osx and arm64)]
-  - cpython
-  - cpython
+#   - cpython   # [not (osx and arm64)]
+#   - cpython
+#   - cpython
   - cpython

recipe/meta.yaml

@@ -72,6 +72,9 @@ outputs:
         - {{ compiler('cxx') }}
         - cmake
         - make
+        - python                              # [build_platform != target_platform]
+        - cross-python_{{ target_platform }}  # [build_platform != target_platform]
+        - numpy                               # [build_platform != target_platform]
       host:
         - {{ pin_compatible('numpy', lower_bound='1.16') }}
         - {{ pin_subpackage('libtiledbvcf', exact=True) }}