CMake 3.19.0-rc1 准备测试

I am proud to announce the first CMake 3.19 release candidate.

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Documentation is available at:
https://cmake.org/cmake/help/v3.19

Release notes appear below and are also published at
https://cmake.org/cmake/help/v3.19/release/3.19.html

Some of the more significant changes in CMake 3.19 are:

• “cmake(1)” and “cmake-gui(1)” now recognize “CMakePresets.json” and
  “CMakeUserPresets.json” files.
• The “Xcode” generator now uses the Xcode “new build system” when
  generating for Xcode 12.0 or higher. See the
  “CMAKE_XCODE_BUILD_SYSTEM” variable. One may use “-T buildsystem=1”
  to switch to the legacy build system.
• The Visual Studio Generators for VS 2015 and above gained support
  for the Visual Studio Tools for Android. One may now set
  “CMAKE_SYSTEM_NAME” to “Android” to generate “.vcxproj” files for
  the Android tools.
• CMake learned to support “ISPC” as a first-class language that can
  be enabled via the “project()” and “enable_language()” commands.
  “ISPC” is currently supported by the Makefile Generators and the
  “Ninja” generator on Linux, macOS, and Windows using the Intel ISPC
  compiler.
• “CUDA” language support for Clang now supports separable compilation
  (“CUDA_SEPARABLE_COMPILATION”)
• The “CMake GUI” now has an environment variable editor.
• The “cmake_path()” command was added for operations on filesystem
  paths.
• The “file(GENERATE)” command gained a new “TARGET” keyword to
  support resolving target-dependent generator expressions.
• The “CMAKE_OPTIMIZE_DEPENDENCIES” variable was added to initialize
  the new “OPTIMIZE_DEPENDENCIES” target property and avoid
  unnecessarily building dependencies for a static library.
• The “CheckCompilerFlag” module has been added to generalize
  “CheckCCompilerFlag” and “CheckCXXCompilerFlag” to more languages.
  It also supports the “CUDA” and “ISPC” languages.
• The “CheckSourceCompiles” module has been added to generalize
  “CheckCSourceCompiles” and “CheckCXXSourceCompiles” to more
  languages. It also supports the “CUDA” and “ISPC” languages.
• The “CheckSourceRuns” module has been added to generalize
  “CheckCSourceRuns” and “CheckCXXSourceRuns” to more languages. It
  also supports the “CUDA” language.
• The “FindCUDAToolkit” module gained support for finding CUDA
  toolkits that do not contain “nvcc”, as well as for finding
  scattered toolkit installations when cross-compiling.
• Interface Libraries may now have source files added via
  “add_library()” or “target_sources()”. Those with sources will be
  generated as part of the build system.
• Compatibility with versions of CMake older than 2.8.12 is now
  deprecated and will be removed from a future version. Calls to
  “cmake_minimum_required()” or “cmake_policy()” that set the policy
  version to an older value now issue a deprecation diagnostic.

更多 https://blog.kitware.com/cmake-3-19-0-rc1-is-ready-for-testing/