I am proud to announce the second CMake 3.21 release candidate.
https://cmake.org/download/
Documentation is available at:
https://cmake.org/cmake/help/v3.21
Release notes appear below and are also published at
https://cmake.org/cmake/help/v3.21/release/3.21.html
Some of the more significant changes in CMake 3.21 are:
* CMake learned to support "HIP" as a first-class language that can be
enabled via the "project()" and "enable_language()" commands.
* The "Visual Studio 17 2022" generator was added. This is
experimental and based on "Visual Studio 2022 Preview 1.1" because
this version of VS has not been released.
* The Makefile Generators and the "Ninja" generator learned to add
linker launcher tools along with the linker for "C", "CXX", "OBJC",
and "OBJCXX" languages. See the "CMAKE__LINKER_LAUNCHER"
variable and "_LINKER_LAUNCHER" target property for details.
* "C_STANDARD", "OBJC_STANDARD", and the "Compile Features"
functionality gained support for C17 and C23.
* "cmake(1)" gained the "--toolchain " command-line
option to specify a toolchain file.
* Messages printed to a terminal now may be colored by message type.
* The Fujitsu compiler is now supported using compiler id "Fujitsu" in
traditional ("Trad") mode, and compiler id "FujitsuClang" in "Clang"
mode.
* The "add_custom_command()" command "DEPFILE" option may now use
"generator expressions", is now supported by Visual Studio Generators
for VS 2012 and above, and is now supported by the "Xcode" generator.
* The "add_custom_command(TARGET)" command (for Build Events) gained
support for resolving target-dependent generator expressions.
* The "install(TARGETS)" command gained new "RUNTIME_DEPENDENCIES" and
"RUNTIME_DEPENDENCY_SET" arguments, which can be used to install
runtime dependencies using "file(GET_RUNTIME_DEPENDENCIES)".
* A new "TARGET_RUNTIME_DLLS" generator expression was added.
* "ctest(1)" gained a "--output-junit" option to write test results to
a JUnit XML file.
* The "ctest_build()" command gained a "PARALLEL_LEVEL" option.
* "ARMClang" cpu/arch compile and link flags are no longer added
automatically based on the "CMAKE_SYSTEM_PROCESSOR" variable or the
undocumented "CMAKE_SYSTEM_ARCH" variable. They must be specified
explicitly. See policy "CMP0123".
* The "foreach()" command now isolates loop variables in the loop
scope. See policy "CMP0124" for details.
CMake 3.21 Release Notes
Changes made since CMake 3.20 include the following.
New Features
Presets
---
* "cmake-presets(7)" gained support for specifying the install prefix
in a configure preset.
* "cmake-presets(7)" gained support for conditional enabling of
presets.
* "cmake-presets(7)" gained support for a "${hostSystemName}" macro.
* "cmake-presets(7)" gained support for omitting the "generator" and
"binaryDir" fields.
Generators
--
* The Makefile Generators and the "Ninja" generator learned to add
linker launcher tools along with the linker for "C", "CXX", "OBJC",
and "OBJCXX" languages. See the "CMAKE__LINKER_LAUNCHER"
variable and "_LINKER_LAUNCHER" target property for details.
* The "Visual Studio 17 2022" generator was added. This is
experimental and based on "Visual Studio 2022 Preview 1.1" because
this version of VS has not been released.
Languages
-
* CMake learned to support "HIP" as a first-class language that can be
enabled via the "project()" and "enable_language()" commands.
* "C_STANDARD", "OBJC_STANDARD", and the "Compile Features"
functionality gained support for C17 and C23.
* Source file extensions ".ixx" and ".cppm" are now treated as C++.
Command-Line
* "cmake(1)" gained the "--install-prefix " command-line option
to specify the location of the install prefix.
* "cmake(1)" gained the "--toolchain " command-line
option to specify a toolchain file.
* "cmake(1)" "-E capabilities" output, for some generators, may now
contain a "supportedPlatforms" field listing platforms known to be
supported in "CMAKE_GENERATOR_PLATFORM".
* Messages printed to a terminal now may be colored by message type.
Compilers
-
* The Fujitsu compiler is now supported using compiler id "Fujitsu" in
traditional ("Trad") mode, and compiler id "FujitsuClang" in "Clang"
mode.
Platforms
-
* CMake now supports the MSYS runtime environment, much like CYGWIN.
File-Based API
--
* The "cmake-file-api(7)" "codemodel" version 2 "version" field has
been updated to 2.3.
* The "cmake-file-api(7)" "codemodel" version 2 gained a new
"directory" object containing directory-level information. This
includes a list of installers generated by the "install()" command.
Commands
* The "add_custom_command()" command "DEPFILE" option may now use
"generator expressions", is now supported by Visual Studio Generators
for VS 2012 and above, and is now supported by th
