Add cpuinfo (#5004)

* Add cpuinfo

* fix lint

* minor fix

---------

Co-authored-by: Alexis Placet <2400067+Alex-PLACET@users.noreply.github.com>

Author: Alex-PLACET

recipes/recipes_emscripten/cpuinfo/build.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -e
+
+emcmake cmake . \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_INSTALL_PREFIX=$PREFIX \
+  -DCPUINFO_LIBRARY_TYPE=static \
+  -DCPUINFO_BUILD_TOOLS=OFF \
+  -DCPUINFO_BUILD_UNIT_TESTS=OFF \
+  -DCPUINFO_BUILD_MOCK_TESTS=OFF \
+  -DCPUINFO_BUILD_BENCHMARKS=OFF \
+  -DCPUINFO_BUILD_PKG_CONFIG=OFF \
+  -Bcmake-out-wasm
+
+cd cmake-out-wasm
+
+emmake cmake --build . --target install

recipes/recipes_emscripten/cpuinfo/build_tests.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+set -e
+
+emcmake cmake -S tests -B build_tests \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_PREFIX_PATH=$PREFIX \
+  -DCMAKE_FIND_ROOT_PATH=$PREFIX \
+  -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=BOTH \
+  -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=BOTH
+
+emmake make -C build_tests
+
+node build_tests/test_cpuinfo.js

recipes/recipes_emscripten/cpuinfo/recipe.yaml

@@ -0,0 +1,59 @@
+context:
+  name: cpuinfo
+  version: "7364b490b5f78d58efe23ea76e74210fd6c3c76f"
+
+package:
+  name: ${{ name }}
+  version: ${{ version }}
+
+source:
+- url: https://github.com/pytorch/cpuinfo/archive/${{ version }}.tar.gz
+  sha256: 67093420590f97c84d0c38cc020f134579494089d06de387bb48c7455eb5b8af
+
+build:
+  number: 0
+  script: build.sh
+
+requirements:
+  build:
+  - ${{ compiler('c') }}
+  - ${{ compiler('cxx') }}
+  - cmake
+  - ninja
+  - python
+
+tests:
+- package_contents:
+    include:
+    - cpuinfo.h
+    lib:
+    - libcpuinfo.a
+    files:
+    - share/cpuinfo/cpuinfo-config.cmake
+- script:
+  - build_tests.sh
+  requirements:
+    build:
+    - ${{ compiler("c") }}
+    - cmake
+    - ninja
+  files:
+    recipe:
+    - build_tests.sh
+    - tests/
+
+about:
+  homepage: https://github.com/pytorch/cpuinfo
+  license: BSD-2-Clause
+  license_file: LICENSE
+  summary: CPU INFOrmation library for aarch64, x86, and WebAssembly
+  description: |
+    cpuinfo is a library to detect essential for performance optimization
+    information about host CPU. It includes detection of CPU topology,
+    supported instruction sets, cache sizes, and other properties.
+    It has native Emscripten/WebAssembly support.
+  repository: https://github.com/pytorch/cpuinfo
+
+extra:
+  recipe-maintainers:
+  - Alex-PLACET

recipes/recipes_emscripten/cpuinfo/tests/CMakeLists.txt

@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 3.15)
+project(cpuinfo_tests)
+
+set(CMAKE_C_STANDARD 11)
+
+find_package(cpuinfo REQUIRED CONFIG)
+
+add_executable(test_cpuinfo test_cpuinfo.c)
+target_link_libraries(test_cpuinfo PRIVATE cpuinfo::cpuinfo)

recipes/recipes_emscripten/cpuinfo/tests/test_cpuinfo.c

@@ -0,0 +1,40 @@
+#include <cpuinfo.h>
+#include <stdio.h>
+#include <assert.h>
+
+int main(void) {
+    /* Initialize cpuinfo */
+    bool ok = cpuinfo_initialize();
+    assert(ok && "cpuinfo_initialize() failed");
+    printf("cpuinfo initialized successfully\n");
+
+    /* Processor / core / package counts must be >= 1 */
+    uint32_t processors = cpuinfo_get_processors_count();
+    uint32_t cores = cpuinfo_get_cores_count();
+    uint32_t packages = cpuinfo_get_packages_count();
+    assert(processors >= 1 && "processors count must be >= 1");
+    assert(cores >= 1 && "cores count must be >= 1");
+    assert(packages >= 1 && "packages count must be >= 1");
+    printf("Processors: %u\n", processors);
+    printf("Cores:      %u\n", cores);
+    printf("Packages:   %u\n", packages);
+
+    /* Cache info - just check it doesn't crash */
+    uint32_t l1i = cpuinfo_get_l1i_caches_count();
+    uint32_t l1d = cpuinfo_get_l1d_caches_count();
+    uint32_t l2  = cpuinfo_get_l2_caches_count();
+    printf("L1i caches: %u\n", l1i);
+    printf("L1d caches: %u\n", l1d);
+    printf("L2  caches: %u\n", l2);
+
+    /* Max cache size must be > 0 when any cache is present */
+    if (l1i > 0 || l1d > 0 || l2 > 0) {
+        uint32_t max_cache = cpuinfo_get_max_cache_size();
+        assert(max_cache > 0 && "max_cache_size must be > 0 when caches exist");
+        printf("Max cache size: %u bytes\n", max_cache);
+    }
+
+    cpuinfo_deinitialize();
+    printf("All cpuinfo tests passed!\n");
+    return 0;
+}