fix osx openmp (#2857)

Summary: Pull Request resolved: https://github.com/facebookresearch/faiss/pull/2857

Reviewed By: alexanderguzhva

Differential Revision: D45791625

Pulled By: algoriddle

fbshipit-source-id: 52ec30f0ec66812f60a08843947aabe8be876afa

conda/faiss-gpu/meta.yaml

@@ -26,7 +26,9 @@ source:
 
 outputs:
   - name: libfaiss
-    script: build-lib.sh
+    script: build-lib.sh  # [x86_64 and not win]
+    script: build-lib-arm64.sh  # [not x86_64]
+    script: build-lib.bat  # [win]
     build:
       string: "h{{ PKG_HASH }}_{{ number }}_cuda{{ cudatoolkit }}{{ suffix }}"
       run_exports:
@@ -36,28 +38,32 @@ outputs:
     requirements:
       build:
         - {{ compiler('cxx') }}
-        - sysroot_linux-64 =2.17 # [linux64]
+        - sysroot_linux-64 =2.17  # [linux64]
         - llvm-openmp  # [osx]
         - cmake =3.23.1
         - make  # [not win]
-        - mkl-devel =2023
+        - mkl-devel =2023  # [x86_64]
       host:
-        - mkl =2023
+        - mkl =2023  # [x86_64]
+        - openblas  # [not x86_64]
         - cudatoolkit {{ cudatoolkit }}
       run:
-        - mkl =2023
+        - mkl =2023  # [x86_64]
+        - openblas  # [not x86_64]
         - {{ pin_compatible('cudatoolkit', max_pin='x.x') }}
     test:
       requires:
         - conda-build
       commands:
-        - test -f $PREFIX/lib/libfaiss.so              # [linux]
-        - test -f $PREFIX/lib/libfaiss.dylib           # [osx]
+        - test -f $PREFIX/lib/libfaiss$SHLIB_EXT       # [not win]
+        - test -f $PREFIX/lib/libfaiss_avx2$SHLIB_EXT  # [x86_64 and not win]
         - conda inspect linkages -p $PREFIX $PKG_NAME  # [not win]
         - conda inspect objects -p $PREFIX $PKG_NAME   # [osx]
 
   - name: faiss-gpu
-    script: build-pkg.sh
+    script: build-pkg.sh  # [x86_64 and not win]
+    script: build-pkg-arm64.sh # [not x86_64]
+    script: build-pkg.bat  # [win]
     build:
       string: "py{{ PY_VER }}_h{{ PKG_HASH }}_{{ number }}_cuda{{ cudatoolkit }}{{ suffix }}"
     requirements:
@@ -86,9 +92,9 @@ outputs:
         - cp tests/common_faiss_tests.py faiss/gpu/test
         - python -X faulthandler -m unittest discover -v -s faiss/gpu/test/ -p "test_*"
         - python -X faulthandler -m unittest discover -v -s faiss/gpu/test/ -p "torch_*"
-        - sh test_cpu_dispatch.sh  # [linux]
+        - sh test_cpu_dispatch.sh  # [linux64]
       files:
-        - test_cpu_dispatch.sh  # [linux]
+        - test_cpu_dispatch.sh  # [linux64]
       source_files:
         - tests/
         - faiss/gpu/test/

conda/faiss/build-lib-osx.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+set -e
+
+
+# Build libfaiss.so/libfaiss_avx2.so.
+cmake -B _build \
+      -DBUILD_SHARED_LIBS=ON \
+      -DBUILD_TESTING=OFF \
+      -DFAISS_OPT_LEVEL=avx2 \
+      -DFAISS_ENABLE_GPU=OFF \
+      -DFAISS_ENABLE_PYTHON=OFF \
+      -DBLA_VENDOR=Intel10_64lp \
+      -DOpenMP_CXX_FLAGS=-fopenmp=libiomp5 \
+      -DOpenMP_CXX_LIB_NAMES=libiomp5 \
+      -DOpenMP_libiomp5_LIBRARY=$PREFIX/lib/libiomp5.dylib \
+      -DCMAKE_INSTALL_LIBDIR=lib \
+      -DCMAKE_BUILD_TYPE=Release .
+
+make -C _build -j$(nproc) faiss faiss_avx2
+
+cmake --install _build --prefix $PREFIX
+cmake --install _build --prefix _libfaiss_stage/

conda/faiss/build-pkg-osx.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+set -e
+
+
+# Build swigfaiss.so/swigfaiss_avx2.so.
+cmake -B _build_python_${PY_VER} \
+      -Dfaiss_ROOT=_libfaiss_stage/ \
+      -DFAISS_OPT_LEVEL=avx2 \
+      -DFAISS_ENABLE_GPU=OFF \
+      -DOpenMP_CXX_FLAGS=-fopenmp=libiomp5 \
+      -DOpenMP_CXX_LIB_NAMES=libiomp5 \
+      -DOpenMP_libiomp5_LIBRARY=$PREFIX/lib/libiomp5.dylib \
+      -DCMAKE_BUILD_TYPE=Release \
+      -DPython_EXECUTABLE=$PYTHON \
+      faiss/python
+
+make -C _build_python_${PY_VER} -j$(nproc) swigfaiss swigfaiss_avx2
+
+# Build actual python module.
+cd _build_python_${PY_VER}/
+$PYTHON setup.py install --single-version-externally-managed --record=record.txt --prefix=$PREFIX

conda/faiss/meta.yaml

@@ -26,8 +26,9 @@ source:
 
 outputs:
   - name: libfaiss
-    script: build-lib.sh   # [x86_64 and not win]
-    script: build-lib-arm64.sh # [not x86_64]
+    script: build-lib.sh  # [x86_64 and not win and not osx]
+    script: build-lib-osx.sh  # [x86_64 and osx]
+    script: build-lib-arm64.sh  # [not x86_64]
     script: build-lib.bat  # [win]
     build:
       string: "h{{ PKG_HASH }}_{{ number }}_cpu{{ suffix }}"
@@ -36,16 +37,17 @@ outputs:
     requirements:
       build:
         - {{ compiler('cxx') }}
-        - sysroot_linux-64 =2.17 # [linux64]
+        - sysroot_linux-64 =2.17  # [linux64]
+        - llvm-openmp  # [osx]
         - cmake =3.23.1
         - make  # [not win]
-        - mkl-devel =2023 # [x86_64]
+        - mkl-devel =2023  # [x86_64]
       host:
-        - mkl =2023 # [x86_64]
-        - openblas # [not x86_64]
+        - mkl =2023  # [x86_64]
+        - openblas  # [not x86_64]
       run:
         - mkl =2023  # [x86_64]
-        - openblas # [not x86_64]
+        - openblas  # [not x86_64]
     test:
       requires:
         - conda-build
@@ -56,7 +58,8 @@ outputs:
         - conda inspect objects -p $PREFIX $PKG_NAME   # [osx]
 
   - name: faiss-cpu
-    script: build-pkg.sh   # [x86_64 and not win]
+    script: build-pkg.sh  # [x86_64 and not win and not osx]
+    script: build-pkg-osx.sh  # [x86_64 and osx]
     script: build-pkg-arm64.sh # [not x86_64]
     script: build-pkg.bat  # [win]
     build: