CMake 3.26.0-rc6 is ready for testing

johnwparent · March 8, 2023, 8:36pm

I am proud to announce the sixth CMake 3.26 release candidate.
https://cmake.org/download/

Release notes appear below and are also published at
https://cmake.org/cmake/help/v3.26/release/3.26.html

Some of the more significant changes in CMake 3.26 are:

The “ASM_MARMASM” language was added to support the Microsoft ARM
assembler language.
CMake now writes a YAML log of configure-time checks to
“CMakeFiles/CMakeConfigureLog.yaml” under the top of the build tree.
See the “cmake-configure-log(7)” manual.
The “cmake-file-api(7)” “codemodel” version 2 “target” object gained
a new “fileSets” field and associated “fileSetIndex” field to
“sources” objects.
The “$<BUILD_LOCAL_INTERFACE:…>” generator expression was added to
prevent usage requirements from being exported to dependent
projects.
Language Standard Flags, such as “-std=c++11”, when generated due to
“target_compile_features()” or “CMAKE__STANDARD”, are now
placed before flags added by “target_compile_options()”, rather than
after them.
The top-level “project()” call will now emit an author warning if
the documented command order in relation to
“cmake_minimum_required()” is not respected.

CMake 3.26 Release Notes

Changes made since CMake 3.25 include the following.

New Features

The “ASM_MARMASM” language was added to support the Microsoft ARM
assembler language.

CMake now writes a YAML log of configure-time checks to
“CMakeFiles/CMakeConfigureLog.yaml” under the top of the build tree.
See the “cmake-configure-log(7)” manual.

The “cmake-file-api(7)” “codemodel” version 2 “version” field has
been updated to 2.5.
The “cmake-file-api(7)” “codemodel” version 2 “target” object gained
a new “fileSets” field and associated “fileSetIndex” field to
“sources” objects.
The “cmake-file-api(7)” gained a new “configureLog” object kind that
enables stable access to the “cmake-configure-log(7)”.

The “add_custom_command()” and “add_custom_target()” commands now
support “generator expressions” in their “COMMENT” option.
The “message()” command gained a “CONFIGURE_LOG” mode to record an
entry in the “cmake-configure-log(7)”.
The “string(TIMESTAMP)” and “file(TIMESTAMP)” commands now support
the “%z” and “%Z” specifiers for the time zone.
The “try_compile()” and “try_run()” commands gained a
“LOG_DESCRIPTION” option specifying text to be recorded in the
“cmake-configure-log(7)”.
The “try_compile()” and “try_run()” commands gained a “NO_LOG”
option to skip recording a “cmake-configure-log(7)” entry.

The “CMAKE__COMPILER_FRONTEND_VARIANT” variable is now set for
“GNU”, “MSVC”, and “AppleClang” compilers that have only one
frontend variant.
A “CMAKE_VS_VERSION_BUILD_NUMBER” variable is now set by Visual
Studio Generators for VS 2017 and above to report the four-component
Visual Studio version number.

The “CLANG_TIDY_EXPORT_FIXES_DIR" target property was added
to allow the “clang-tidy” tool to export its suggested fixes to a
set of “.yaml” files. A new
"CMAKE_CLANG_TIDY_EXPORT_FIXES_DIR” variable was created to
initialize this property.
The “XCODE_EMBED_EXTENSIONKIT_EXTENSIONS” target property was added
to tell the “Xcode” generator to embed ExtensionKit-based extensions
such as extensions using the Background Assets framework. Aspects
of the embedding can be customized with:
- “XCODE_EMBED_EXTENSIONKIT_EXTENSIONS_PATH”
- “XCODE_EMBED_EXTENSIONKIT_EXTENSIONS_CODE_SIGN_ON_COPY”
- “XCODE_EMBED_EXTENSIONKIT_EXTENSIONS_REMOVE_HEADERS_ON_COPY”

The “ExternalProject” module’s “ExternalProject_Add()” command
gained an “INSTALL_BYPRODUCTS” option to specify files generated by
the “install” step.
The “FindCUDAToolkit” module:
- gained support for the “sbsa-linux” cross compilation target, and
- now provides an imported target for “nvrtc_static”, if found.
The “FindImageMagick” module now provides imported targets.
The “FindPython3” and “FindPython” modules gained support for the
Stable Application Binary Interface.
The “UseSWIG” module gained support for the “perl5” language.

The “$<BUILD_LOCAL_INTERFACE:…>” generator expression was added to
prevent usage requirements from being exported to dependent
projects.

The “CTEST_NO_TESTS_ACTION” environment variable was added to
provide a default value for the “–no-tests=” command line
argument of “ctest(1)”.

The “CMakeFiles/CMakeOutput.log” and “CMakeFiles/CMakeError.log”
files are no longer populated by CMake’s built-in modules.
“cmake(1)” no longer suggests looking at them after a “CMake Error”
occurs. Information previously logged to those files is instead
logged to the “cmake-configure-log(7)”.
On CYGWIN, the undocumented “CMAKE_LEGACY_CYGWIN_WIN32” mode for
compatibility with CMake versions older than 2.8.4 has been removed.

Language Standard Flags, such as “-std=c++11”, when generated due to
“target_compile_features()” or “CMAKE__STANDARD”, are now
placed before flags added by “target_compile_options()”, rather than
after them.
For all “COMPILE_DEFINITIONS” properties, any leading “-D” on an
item is removed whether or not it was specified by a generator
expression.
The “compile_commands.json” database enabled by
“CMAKE_EXPORT_COMPILE_COMMANDS” now provides the “output” field in
the compile commands objects. This allows multi-config generators,
such as the “Ninja Multi-Config” generator, to provide the compile
commands for all configurations.
The “USE_FOLDERS” global property is treated as “ON” by default. See
policy “CMP0143”.
The top-level “project()” call will now emit an author warning if
the documented command order in relation to
“cmake_minimum_required()” is not respected.
The “cmake --trace” option now follows “try_compile()” and
“try_run()” invocations.

Changes made since CMake 3.26.0-rc5:

Brad King (6):

scivision (1):