Add Nuget packaging

CMakePresets.json

@@ -156,6 +156,50 @@
         "BUILD_SHARED_LIBS": "NO",
         "WITH_DOCS": "NO"
       }
+    },
+    {
+      "name": "package-nuget",
+      "inherits": "package",
+      "hidden": true,
+      "cacheVariables": {
+        "CMAKE_TOOLCHAIN_FILE": "$env{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake",
+        "BUILD_SHARED_LIBS": "YES",
+        "WITH_DOCS": "NO",
+        "DCMAKE_INSTALL_DATADIR": "share/Halide",
+        "Halide_INSTALL_CMAKEDIR": "share/Halide"
+      }
+    },
+    {
+      "name": "package-nuget-win-x86",
+      "inherits": "package-nuget",
+      "binaryDir": "win-x86",
+      "displayName": "Package Halide for Nuget (win-x86)",
+      "description": "Package Halide for Nuget (win-x86)",
+      "generator": "Visual Studio 16 2019",
+      "architecture": "Win32",
+      "toolset": "host=x64",
+      "cacheVariables": {
+        "CPACK_NUGET_PACKAGE_NAME": "Halide.runtime.win-x86",
+        "CMAKE_INSTALL_BINDIR": "runtime/win-x86/native",
+        "CMAKE_INSTALL_LIBDIR": "runtime/win-x86/native",
+        "CMAKE_INSTALL_INCLUDEDIR": "build/native/include"
+      }
+    },
+    {
+      "name": "package-nuget-win-x64",
+      "inherits": "package-nuget",
+      "binaryDir": "win-x64",
+      "displayName": "Package Halide for Nuget (win-x64)",
+      "description": "Package Halide for Nuget (win-x64)",
+      "generator": "Visual Studio 16 2019",
+      "architecture": "x64",
+      "toolset": "host=x64",
+      "cacheVariables": {
+        "CPACK_NUGET_PACKAGE_NAME": "Halide.runtime.win-x64",
+        "CMAKE_INSTALL_BINDIR": "runtime/win-x64/native",
+        "CMAKE_INSTALL_LIBDIR": "runtime/win-x64/native",
+        "CMAKE_INSTALL_INCLUDEDIR": "build/native/include"
+      }
     }
   ]
 }

packaging/nuget/Halide.runtime.win-x64/config.cmake

@@ -0,0 +1,4 @@
+include(win-x64/CPackConfig.cmake)
+include("${CMAKE_CURRENT_LIST_DIR}/../common/config.cmake")
+
+set(CPACK_NUGET_PACKAGE_NAME Halide.runtime.win-x64)

packaging/nuget/Halide.runtime.win-x86/config.cmake

@@ -0,0 +1,4 @@
+include(win-x86/CPackConfig.cmake)
+include("${CMAKE_CURRENT_LIST_DIR}/../common/config.cmake")
+
+set(CPACK_NUGET_PACKAGE_NAME Halide.runtime.win-x86)

packaging/nuget/Halide/Halide.nuspec

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
+  <metadata minClientVersion="2.12">
+    <id>Halide</id>
+    <version>@CPACK_PACKAGE_VERSION@</version>
+    <authors>@CPACK_NUGET_PACKAGE_AUTHORS@</authors>
+    <owners>@CPACK_NUGET_PACKAGE_OWNERS@</owners>
+    <requireLicenseAcceptance>true</requireLicenseAcceptance>
+    <license type="expression">@CPACK_NUGET_PACKAGE_LICENSE_EXPRESSION@</license>
+    <projectUrl>@CPACK_PACKAGE_HOMEPAGE_URL@</projectUrl>
+    <description>@CPACK_PACKAGE_DESCRIPTION_SUMMARY@</description>
+    <copyright>@CPACK_NUGET_PACKAGE_COPYRIGHT@</copyright>
+    <repository type="git" url="https://github.com/halide/Halide" branch="v@CPACK_PACKAGE_VERSION@" />
+  </metadata>
+  <files>
+    <file src="runtime.json" target="runtime.json" />
+  </files>
+</package>

packaging/nuget/Halide/build.cmake

@@ -0,0 +1,10 @@
+include(${Halide_USE_PACKAGE}/CPackConfig.cmake)
+include("${CMAKE_CURRENT_LIST_DIR}/../common/config.cmake")
+
+configure_file(${CMAKE_CURRENT_LIST_DIR}/Halide.nuspec
+               ${CMAKE_CURRENT_BINARY_DIR}/base/Halide.nuspec)
+configure_file(${CMAKE_CURRENT_LIST_DIR}/runtime.json
+               ${CMAKE_CURRENT_BINARY_DIR}/base/runtime.json)
+
+find_program(NUGET_EXE nuget REQUIRED)
+execute_process(COMMAND ${NUGET_EXE} pack ${CMAKE_CURRENT_BINARY_DIR}/base)

packaging/nuget/Halide/runtime.json

@@ -0,0 +1,14 @@
+{
+  "runtimes": {
+    "win-x64": {
+      "Halide": {
+        "Halide.runtime.win-x64": "@CPACK_PACKAGE_VERSION@"
+      }
+    },
+    "win-x86": {
+      "Halide": {
+        "Halide.runtime.win-x86": "@CPACK_PACKAGE_VERSION@"
+      }
+    }
+  }
+}

packaging/nuget/common/config.cmake

@@ -0,0 +1,15 @@
+set(CPACK_NUGET_COMPONENT_INSTALL OFF)
+set(CPACK_NUGET_PACKAGE_AUTHORS "Andrew Adams, Jonathan Ragan-Kelley, Steven Johnson, Tzu-Mao Li, alexreinking, Volodymyr Kysenko, Benoit Steiner, Dillon Sharlet, Shoaib Kamil, Zalman Stern")
+set(CPACK_NUGET_PACKAGE_TITLE "Halide Compiler and Libraries")
+set(CPACK_NUGET_PACKAGE_OWNERS alexreinking)
+set(CPACK_NUGET_PACKAGE_COPYRIGHT "Copyright (c) 2012-2020 MIT CSAIL, Google, Facebook, Adobe, NVIDIA CORPORATION, and other contributors.")
+set(CPACK_NUGET_PACKAGE_TAGS "Halide C++ CUDA OpenCL GPU Performance DSL native")
+set(CPACK_NUGET_PACKAGE_DEPENDENCIES "")
+set(CPACK_NUGET_PACKAGE_DEBUG OFF)
+set(CPACK_NUGET_PACKAGE_LICENSE_EXPRESSION MIT)
+
+# CMake 3.20 correctly uses SPDX license variables and drops
+# support for the deprecated license URL option in Nuget.
+if (CMAKE_VERSION VERSION_LESS 3.20)
+    set(CPACK_NUGET_PACKAGE_LICENSEURL "https://github.com/halide/Halide/blob/master/LICENSE.txt")
+endif ()

packaging/nuget/package.bat

@@ -0,0 +1,68 @@
+@echo off
+setlocal
+
+set halide_source=%cd%\%~1
+set halide_build_root=%cd%\%~2
+set halide_arch=%~3
+set script_dir=%~dp0
+
+if not exist "%VCPKG_ROOT%\.vcpkg-root" (
+    echo Must define VCPKG_ROOT to be the root of the VCPKG install
+    goto error
+)
+
+if not exist "%LLVM_DIR%\LLVMConfig.cmake" (
+    echo Must set specific LLVM_DIR for packaging
+    goto error
+)
+
+if not exist "%Clang_DIR%\ClangConfig.cmake" (
+    echo Must set specific Clang_DIR for packaging
+    goto error
+)
+
+if "%halide_source%" == "" (
+    echo Usage: %~0 "<source-dir>" "<build-dir>" [win-x86,win-x64]
+    goto error
+)
+
+if "%halide_build_root%" == "" (
+    echo Usage: %~0 "<source-dir>" "<build-dir>" [win-x86,win-x64]
+    goto error
+)
+
+if "%halide_arch%" == "" (
+    echo Usage: %~0 "<source-dir>" "<build-dir>" [win-x86,win-x64]
+    goto error
+)
+
+REM Ninja Multi-Config in 3.18 has some sort of bug. Very disappointing.
+cmake --preset=package-nuget-%halide_arch% -S "%halide_source%" -B "%halide_build_root%\%halide_arch%"
+if ERRORLEVEL 1 goto error
+
+REM We don't distribute Debug binaries because they aren't useful
+REM cmake --build %halide_build_root% --config Debug
+cmake --build "%halide_build_root%\%halide_arch%" --config Release
+if ERRORLEVEL 1 goto error
+
+pushd "%halide_build_root%"
+
+cpack -G NuGet -C Release --config "%script_dir%Halide.runtime.%halide_arch%\config.cmake"
+if ERRORLEVEL 1 (
+    popd
+    goto error
+)
+
+REM TODO: write a second script for this? It should always be safe to clobber.
+cmake -DHalide_USE_PACKAGE=%halide_arch% -P "%script_dir%Halide\build.cmake"
+if ERRORLEVEL 1 (
+    popd
+    goto error
+)
+
+popd
+
+exit /b
+
+:error
+exit /b 1