Added fbgemm recipe building fbgemm, fbgemm-gpu, and fbgemm-gpu-genai

recipes/asmjit/build.sh

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+#!/bin/bash
+
+set -ex
+
+mkdir build
+cd build
+
+cmake ${CMAKE_ARGS} \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=$PREFIX \
+    -DCMAKE_INSTALL_LIBDIR=lib \
+    -DASMJIT_STATIC=OFF \
+    -DASMJIT_TEST=ON \
+    -DASMJIT_NO_CUSTOM_FLAGS=OFF \
+    ..
+
+cmake --build . --config Release --parallel ${CPU_COUNT}
+
+# Run tests to verify the build
+# This must be done here, because otherwise we need to re-build the lib in test phase, which
+ctest --output-on-failure --verbose
+
+cmake --install . --config Release

recipes/asmjit/meta.yaml

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+{% set name = "asmjit" %}
+{% set commit_date = "20251012" %}
+{% set commit_hash = "5134d396bd00c1b63259387acdbb12dfdf009f9b" %}
+{% set version = "0.0.0.dev" + commit_date + "+" + commit_hash[:8] %}
+
+
+package:
+  name: {{ name|lower }}
+  version: {{ version }}
+
+source:
+  url: https://github.com/asmjit/asmjit/archive/{{ commit_hash }}.tar.gz
+  sha256: 7a138a9715ac52ac9c259818c05fe42dbf19233dbf82188640aaf32259fa1d34
+
+build:
+  number: 0
+  # TODO attempt to enable aarch64 after feedstock creation
+  # This needs c_stdlib_version>-2.28
+  # In staged-recipes .ci_support/linux_aarch64.yaml pins c_stdlib_version=2.17 which fails this build
+  skip: true  # [aarch64]
+  skip: true  # [osx]
+  skip: true  # [win]
+
+requirements:
+  build:
+    - {{ compiler('cxx') }}
+    - {{ stdlib('c') }}
+    - cmake >=3.24
+    - make
+
+test:
+  commands:
+    # Verify installed files (tests were run at build time)
+    - test -f ${PREFIX}/include/asmjit/asmjit.h
+    - test -f ${PREFIX}/lib/libasmjit${SHLIB_EXT}
+
+about:
+  home: https://asmjit.com
+  summary: Low-latency machine code generation library
+  description: |
+    AsmJit is a lightweight library for machine code generation written in C++ language.
+    It can generate machine code for X86, X64, and ARM architectures with a focus on
+    low-latency code generation and JIT compilation. AsmJit provides:
+    - Complete x86/x64 instruction set with AVX-512 and AMX support
+    - Complete AArch64 instruction set including SVE/SVE2
+    - Built-in CPU detection
+    - Advanced instruction validation
+    - Logging and error handling
+    - Virtual memory management
+    - Code generation performance comparable to hand-written assembly
+  license: Zlib
+  license_file: LICENSE.md
+  doc_url: https://asmjit.com/doc/index.html
+  dev_url: https://github.com/asmjit/asmjit
+
+extra:
+  recipe-maintainers:
+    - das-intensity

recipes/fbgemm/LICENSE-asmjit.txt

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+Copyright (c) 2008-2024 The AsmJit Authors
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.

recipes/fbgemm/LICENSE-cutlass.txt

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+Copyright (c) 2017 - 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+SPDX-License-Identifier: BSD-3-Clause
+
+```
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+  1. Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+  2. Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+  3. Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+```
+
+(extracted from cutlass README.md)

recipes/fbgemm/LICENSE-fbgemm.txt

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+BSD License
+
+For FBGEMM software
+
+Copyright (c) Meta Platforms, Inc. and affiliates. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+ * Neither the name Facebook nor the names of its contributors may be used to
+   endorse or promote products derived from this software without specific
+   prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

recipes/fbgemm/LICENSE-json.txt

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+MIT License 
+
+Copyright (c) 2013-2022 Niels Lohmann
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

recipes/fbgemm/LICENSE-quantize_ops_mx.txt

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+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE