[WIP] Recipe xnnpack

recipes/xnnpack/build.sh

@@ -0,0 +1,9 @@
+mkdir build
+cd build
+cmake ${CMAKE_ARGS} \
+  -DXNNPACK_BUILD_TESTS=0 \
+  -DXNNPACK_BUILD_BENCHMARKS=0 \
+  ..
+
+make -j${CPU_COUNT}
+make install

recipes/xnnpack/gcc11_compat.patch

@@ -0,0 +1,33 @@
+From 042cdaf1c24c675fca5e79eb4d2665839d7df2c2 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Nenad=20Miks=CC=8Ca?= <nenad.miksa@microblink.com>
+Date: Mon, 3 May 2021 13:28:59 +0200
+Subject: [PATCH] GCC 11 no longer needs this polyfill
+
+---
+ src/xnnpack/intrinsics-polyfill.h | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/src/xnnpack/intrinsics-polyfill.h b/src/xnnpack/intrinsics-polyfill.h
+index 3f198d886..32d7d4f39 100644
+--- a/src/xnnpack/intrinsics-polyfill.h
++++ b/src/xnnpack/intrinsics-polyfill.h
+@@ -11,8 +11,8 @@
+ #if defined(__SSE2__)
+ #include <emmintrin.h>
+
+-// GCC any, Clang pre-8, Android NDK Clang pre-8.0.7, Apple Clang pre-11, and ICC pre-16
+-#if (defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER)) || \
++// GCC pre-11, Clang pre-8, Android NDK Clang pre-8.0.7, Apple Clang pre-11, and ICC pre-16
++#if (defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) && __GNUC__ < 11) || \
+     (defined(__clang__) && !defined(__apple_build_version__) && (__clang_major__ < 8)) || \
+     (defined(__clang__) && defined(__ANDROID__) && (__clang_major__ == 8) && (__clang_minor__ == 0) && (__clang_patchlevel__ < 7)) || \
+     (defined(__clang__) && defined(__apple_build_version__) && (__apple_build_version__ < 11000000)) || \
+@@ -27,7 +27,7 @@ static XNN_INTRINSIC
+ void _mm_storeu_si32(const void* address, __m128i v) {
+   *((int*) address) = _mm_cvtsi128_si32(v);
+ }
+-#endif  // GCC any, Clang pre-8, Android NDK Clang pre-8.0.7, Apple Clang pre-11, and ICC pre-16
++#endif  // GCC pre-11, Clang pre-8, Android NDK Clang pre-8.0.7, Apple Clang pre-11, and ICC pre-16
+ #endif  // SSE2
+
+ #ifdef __AVX512F__

recipes/xnnpack/meta.yaml

@@ -0,0 +1,47 @@
+{% set name = "xnnpack" %}
+# Pytorch pins to 55d53a4
+# https://github.com/pytorch/pytorch/tree/v1.9.0/third_party
+# https://github.com/google/XNNPACK/commit/55d53a4
+{% set commit = "55d53a4" %}
+{% set commit_date = "2021.02.23" %}
+# XNNPACK is unreleased software
+# We create our own version numbers
+{% set version = "0.0.0" + "." + commit_date + "." + commit %}
+
+package:
+  name: {{ name|lower }}
+  version: {{ version }}
+
+source:
+  git_url: https://github.com/google/XNNPACK.git
+  git_tag: {{ commit }}
+  patches:
+    - gcc11_compat.patch
+
+build:
+  number: 0
+  skip: true   # [win]
+
+requirements:
+  build:
+    - {{ compiler('c') }}
+    - {{ compiler('cxx') }}
+    - cmake
+  host:
+    # - pthread-stubs
+  run:
+
+test:
+  commands:
+    - echo dummy
+
+about:
+  home: https://github.com/google/XNNPACK
+  license: BSD-3-Clause
+  license_family: BSD
+  license_file: LICENSE
+  summary: 'XNNPACK is a highly optimized library of floating-point neural network inference operators for ARM, WebAssembly, and x86 platforms.'
+
+extra:
+  recipe-maintainers:
+    - hmaarrfk