CMake 3.1-rc3 is now ready!
I am proud to announce the CMake 3.1 third release candidate.
Sources and binaries are available at:
http://www.cmake.org/files/v3.1/?C=M;O=D
Documentation is available at:
http://www.cmake.org/cmake/help/v3.1
Release notes appear below and are also published at
http://www.cmake.org/cmake/help/v3.1/release/3.1.0.html
Some of the more significant features of CMake 3.1 are:
* Windows Phone and Windows Store support has been added to Visual Studio 11
(2012) and above Generators.
* NVIDIA Nsight Tegra support has been added to Visual Studio 10 (2010) and
above Generators.
* New "target_compile_features" command allows populating target based compile
features. CMake uses this information to ensure that the compiler in use is
capable of building the target, and to add any necessary compile flags
such as -std=gnu++11 to support language features.
More information on this is found at:
– http://www.cmake.org/cmake/help/v3.1/manual/cmake-compile-features.7.html
* The syntax for *Variable References* and *Escape Sequences* was simplified in
order to allow a much faster implementation. See policy "CMP0053".
* The "if" command no longer automatically dereferences variables named in
quoted or bracket arguments. See policy "CMP0054".
* The target property "SOURCES" now generally supports "Generator Expressions".
The generator expressions may be used in the "add_library" and
"add_executable" commands.
* It is now possible to write and append to the target property "SOURCES".
The variable "CMAKE_DEBUG_TARGET_PROPERTIES" can be used to trace the
origin of sources.
* CPack gained "7Z" and "TXZ" generators supporting lzma-compressed archives.
* The ExternalProject module has learned to support lzma-compressed
source tarballs with ".7z", ".tar.xz", and ".txz" extensions.
* The ExternalProject module ExternalProject_Add command learned a new
BUILD_ALWAYS option to cause the external project build step to run every
time the host project is built.
* The ctest_coverage command learned to support Intel coverage files with the
"codecov" tool.
* The ctest_memcheck command learned to support sanitizer modes, including
"AddressSanitizer", "MemorySanitizer", "ThreadSanitizer", and
"UndefinedBehaviorSanitizer".
Deprecated and Removed Features:
* In CMake 3.0 the "target_link_libraries" command accidentally began allowing
unquoted arguments to use Generator Expressions containing a semicolon
separated list within them. For example:
set(libs B C)
target_link_libraries(A PUBLIC $<BUILD_INTERFACE:${libs}>)
This is equivalent to writing:
target_link_libraries(A PUBLIC $<BUILD_INTERFACE:B C>)
and was never intended to work. It did not work in CMake 2.8.12.
Such generator expressions should be in quoted arguments:
set(libs B C)
target_link_libraries(A PUBLIC "$<BUILD_INTERFACE:${libs}>")
CMake 3.1 again requires the quotes for this to work correctly.
CMake 3.1.0 Release Notes
*************************
Changes made since CMake 3.0.0 include the following.
Documentation Changes
=====================
* A new "cmake-compile-features(7)" manual was added.
New Features
============
Generators
———-
* The "Visual Studio 14 2015" generator was added.
Windows Phone and Windows Store
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Generators for Visual Studio 11 (2012) and above learned to
generate projects for Windows Phone and Windows Store. One may set
the "CMAKE_SYSTEM_NAME" variable to "WindowsPhone" or "WindowsStore"
on the "cmake(1)" command-line or in a "CMAKE_TOOLCHAIN_FILE" to
activate these platforms. Also set "CMAKE_SYSTEM_VERSION" to "8.0"
or "8.1" to specify the version of Windows to be targeted.
NVIDIA Nsight Tegra
~~~~~~~~~~~~~~~~~~~
* Generators for Visual Studio 10 (2010) and above learned to
generate projects for NVIDIA Nsight Tegra Visual Studio Edition.
One may set the "CMAKE_SYSTEM_NAME" variable to "Android" on the
"cmake(1)" command-line or in a "CMAKE_TOOLCHAIN_FILE" to activate
this platform.
Syntax
——
* The "cmake-language(7)" syntax for *Variable References* and
*Escape Sequences* was simplified in order to allow a much faster
implementation. See policy "CMP0053".
* The "if()" command no longer automatically dereferences variables
named in quoted or bracket arguments. See policy "CMP0054".
Commands
——–
* The "add_custom_command()" command learned to interpret "cmake-
generator-expressions(7)" in arguments to "DEPENDS".
* The "export(PACKAGE)" command learned to check the
"CMAKE_EXPORT_NO_PACKAGE_REGISTRY" variable to skip exporting the
package.
* The "file(STRINGS)" command gained a new "ENCODING" option to
enable extraction of "UTF-8" strings.
* The "find_package()" command learned to check the
"CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY" and
"CMAKE_FIND_PACKAGE_NO_SYSTEM_PACKAGE_REGISTRY" variables to skip
searching the package registries.
* The "get_property()" command learned a new "INSTALL" scope for
properties.
* The "install()" command learned a "MESSAGE_NEVER" option to avoid
output during installation.
* The "set_property()" command learned a new "INSTALL" scope for
properties.
* The "string()" command learned a new "GENEX_STRIP" subcommand
which removes "generator expression".
* The "string()" command learned a new "UUID" subcommand to generate
a univerally unique identifier.
* New "target_compile_features()" command allows populating the
"COMPILE_FEATURES" target property, just like any other build
variable.
* The "target_sources()" command was added to add to the "SOURCES"
target property.
Variables
———
* The Visual Studio generators for versions 8 (2005) and above
learned to read the target platform name from a new
"CMAKE_GENERATOR_PLATFORM" variable when it is not specified as part
of the generator name. The platform name may be specified on the
"cmake(1)" command line with the "-A" option, e.g. "-G "Visual
Studio 12 2013" -A x64".
* The "CMAKE_GENERATOR_TOOLSET" variable may now be initialized in a
toolchain file specified by the "CMAKE_TOOLCHAIN_FILE" variable.
This is useful when cross-compiling with the Xcode or Visual Studio
generators.
* The "CMAKE_INSTALL_MESSAGE" variable was introduced to optionally
reduce output installation.
Properties
———-
* New "CXX_STANDARD" and "CXX_EXTENSIONS" target properties may
specify values which CMake uses to compute required compile options
such as "-std=c++11" or "-std=gnu++11". The "CMAKE_CXX_STANDARD" and
"CMAKE_CXX_EXTENSIONS" variables may be set to initialize the target
properties.
* New "C_STANDARD" and "C_EXTENSIONS" target properties may specify
values which CMake uses to compute required compile options such as
"-std=c11" or "-std=gnu11". The "CMAKE_C_STANDARD" and
"CMAKE_C_EXTENSIONS" variables may be set to initialize the target
properties.
* New "COMPILE_FEATURES" target property may contain a list of
features required to compile a target. CMake uses this information
to ensure that the compiler in use is capable of building the
target, and to add any necessary compile flags to support language
features.
* New "COMPILE_PDB_NAME" and "COMPILE_PDB_OUTPUT_DIRECTORY" target
properties were introduced to specify the MSVC compiler program
database file location ("cl /Fd"). This complements the existing
"PDB_NAME" and "PDB_OUTPUT_DIRECTORY" target properties that specify
the linker program database file location ("link /pdb").
* The "INTERFACE_LINK_LIBRARIES" target property now supports a
"$<LINK_ONLY:…>" "generator expression".
* A new "INTERFACE_SOURCES" target property was introduced. This is
consumed by dependent targets, which compile and link the listed
sources.
* The "SOURCES" target property now contains "generator expression"
such as "TARGET_OBJECTS" when read at configure time, if policy
"CMP0051" is "NEW".
* The "SOURCES" target property now generally supports "generator
expression". The generator expressions may be used in the
"add_library()" and "add_executable()" commands.
* It is now possible to write and append to the "SOURCES" target
property. The "CMAKE_DEBUG_TARGET_PROPERTIES" variable may be used
to trace the origin of sources.
* A "VS_DEPLOYMENT_CONTENT" source file property was added to tell
the Visual Studio generators to mark content for deployment in
Windows Phone and Windows Store projects.
* The "VS_WINRT_COMPONENT" target property was created to tell
Visual Studio generators to compile a shared library as a Windows
Runtime (WinRT) component.
* A "VS_DEPLOYMENT_LOCATION" source file property was added to tell
the Visual Studio generators the relative location of content marked
for deployment in Windows Phone and Windows Store projects.
* The "Xcode" generator learned to check source file properties
"XCODE_EXPLICIT_FILE_TYPE" and "XCODE_LAST_KNOWN_FILE_TYPE" for a
custom Xcode file reference type.
Modules
——-
* The "BundleUtilities" module learned to resolve and replace
"@rpath" placeholders on OS X to correctly bundle applications using
them.
* The "CMakePackageConfigHelpers" module
"configure_package_config_file()" command learned a new
"INSTALL_PREFIX" option to generate package configuration files
meant for a prefix other than "CMAKE_INSTALL_PREFIX".
* The "CheckFortranSourceCompiles" module was added to provide a
"CHECK_Fortran_SOURCE_COMPILES" macro.
* The "ExternalData" module learned to tolerate a "DATA{}" reference
to a missing source file with a warning instead of rejecting it with
an error. This helps developers write new "DATA{}" references to
test reference outputs that have not yet been created.
* The "ExternalProject" module learned to support lzma-compressed
source tarballs with ".7z", ".tar.xz", and ".txz" extensions.
* The "ExternalProject" module "ExternalProject_Add" command learned
a new "BUILD_ALWAYS" option to cause the external project build step
to run every time the host project is built.
* The "ExternalProject" module "ExternalProject_Add" command learned
a new "EXCLUDE_FROM_ALL" option to cause the external project target
to have the "EXCLUDE_FROM_ALL" target property set.
* The "ExternalProject" module "ExternalProject_Add_Step" command
learned a new "EXCLUDE_FROM_MAIN" option to cause the step to not be
a direct dependency of the main external project target.
* The "ExternalProject" module "ExternalProject_Add" command learned
a new "DOWNLOAD_NO_PROGRESS" option to disable progress output while
downloading the source tarball.
* The "FeatureSummary" module "feature_summary" API learned to
accept multiple values for the "WHAT" option and combine them
appropriately.
* The "FindCUDA" module learned to support "fatbin" and "cubin"
modules.
* The "FindGTest" module "gtest_add_tests" macro learned a new
"AUTO" option to automatically read the "SOURCES" target property of
the test executable and scan the source files for tests to be added.
* The "FindGLEW" module now provides imported targets.
* The "FindGLUT" module now provides imported targets.
* The "FindHg" module gained a new "Hg_WC_INFO" macro to help run
"hg" to extract information about a Mercurial work copy.
* The "FindOpenCL" module was introduced.
* The "FindOpenMP" module learned to support Fortran.
* The "FindPkgConfig" module learned to use the "PKG_CONFIG"
environment variable value as the "pkg-config" executable, if set.
* The "FindXercesC" module was introduced.
* The "FindZLIB" module now provides imported targets.
* The "GenerateExportHeader" module "generate_export_header"
function learned to allow use with *Object Libraries*.
* The "InstallRequiredSystemLibraries" module gained a new
"CMAKE_INSTALL_OPENMP_LIBRARIES" option to install MSVC OpenMP
runtime libraries.
* The "UseSWIG" module learned to detect the module name from ".i"
source files if possible to avoid the need to set the
"SWIG_MODULE_NAME" source file property explicitly.
* The "WriteCompilerDetectionHeader" module was added to allow
creation of a portable header file for compiler optional feature
detection.
Generator Expressions
———————
* New "COMPILE_FEATURES" "generator expression" allows setting build
properties based on available compiler features.
CTest
—–
* The "ctest_coverage()" command learned to read variable
"CTEST_COVERAGE_EXTRA_FLAGS" to set "CoverageExtraFlags".
* The "ctest_coverage()" command learned to support Intel coverage
files with the "codecov" tool.
* The "ctest_memcheck()" command learned to support sanitizer modes,
including "AddressSanitizer", "MemorySanitizer", "ThreadSanitizer",
and "UndefinedBehaviorSanitizer". Options may be set using the new
"CTEST_MEMORYCHECK_SANITIZER_OPTIONS" variable.
CPack
—–
* "cpack(1)" gained an "IFW" generator to package using Qt Framework
Installer tools. See the "CPackIFW" module.
* "cpack(1)" gained "7Z" and "TXZ" generators supporting lzma-
compressed archives.
* The "CPackDeb" module learned a new
"CPACK_DEBIAN_COMPRESSION_TYPE" variable to set the tarball
compression type.
* The "cpack(1)" "WiX" generator learned to support a
"CPACK_WIX_ACL" installed file property to specify an Access Control
List.
Other
—–
* The "cmake(1)" "-E" option learned a new "env" command.
* The "cmake(1)" "-E tar" command learned to support lzma-compressed
files.
* *Object Libraries* may now have extra sources that do not compile
to object files so long as they would not affect linking of a normal
library (e.g. ".dat" is okay but not ".def").
* Visual Studio generators for VS 8 and later learned to support the
"ASM_MASM" language.
* The Visual Studio generators learned to treat ".hlsl" source files
as High Level Shading Language sources (using "FXCompile" in
".vcxproj" files). Source file properties "VS_SHADER_TYPE",
"VS_SHADER_MODEL", and "VS_SHADER_ENTRYPOINT" were added added to
specify the shader type, model, and entry point name.
New Diagnostics
===============
* Policy "CMP0052" introduced to control directories in the
"INTERFACE_INCLUDE_DIRECTORIES" of exported targets.
Deprecated and Removed Features
===============================
* In CMake 3.0 the "target_link_libraries()" command accidentally
began allowing unquoted arguments to use "generator expressions"
containing a (";" separated) list within them. For example:
set(libs B C)
target_link_libraries(A PUBLIC $<BUILD_INTERFACE:${libs}>)
This is equivalent to writing:
target_link_libraries(A PUBLIC $<BUILD_INTERFACE:B C>)
and was never intended to work. It did not work in CMake 2.8.12.
Such generator expressions should be in quoted arguments:
set(libs B C)
target_link_libraries(A PUBLIC "$<BUILD_INTERFACE:${libs}>")
CMake 3.1 again requires the quotes for this to work correctly.
* Callbacks established by the "variable_watch()" command will no
longer receive the "ALLOWED_UNKNOWN_READ_ACCESS" access type when
the undocumented "CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS" variable
is set. Uninitialized variable accesses will always be reported as
"UNKNOWN_READ_ACCESS".
* The "CMakeDetermineVSServicePack" module now warns that it is
deprecated and should not longer be used. Use the
"CMAKE_<LANG>_COMPILER_VERSION" variable instead.
* The "FindITK" module has been removed altogether. It was a thin-
wrapper around "find_package(ITK … NO_MODULE)". This produces much
clearer error messages when ITK is not found.
* The "FindVTK" module has been removed altogether. It was a thin-
wrapper around "find_package(VTK … NO_MODULE)". This produces much
clearer error messages when VTK is not found.
The module also provided compatibility support for finding VTK 4.0.
This capability has been dropped.
Other Changes
=============
* The "cmake-gui(1)" learned to capture output from child processes
started by the "execute_process()" command and display it in the
output window.
* The "cmake-language(7)" internal implementation of generator
expression and list expansion parsers have been optimized and shows
non-trivial speedup on large projects.
* The Makefile generators learned to use response files with GNU
tools on Windows to pass library directories and names to the
linker.
* When generating linker command-lines, CMake now avoids repeating
items corresponding to SHARED library targets.
* Support for the Open Watcom compiler has been overhauled. The
"CMAKE_<LANG>_COMPILER_ID" is now "OpenWatcom", and the
"CMAKE_<LANG>_COMPILER_VERSION" now uses the Open Watcom external
version numbering. The external version numbers are lower than the
internal version number by 11.
* The "cmake-mode.el" major Emacs editing mode no longer treats "_"
as part of words, making it more consistent with other major modes.
——————————————————————-
Changes made since CMake 3.1.0-rc2:
Ben Boeckel (1):
Revert "ClearMatches: Only clear matches which were actually set" (#15261)
Brad King (18):
Help: Document COMPONENT option of install(SCRIPT/CODE) (#14956)
Do not use just-built CMake to install itself when cross-compiling (#15248)
KWSys SharedForward: Hard-code the ldpath buffer size to below VS 14 limit
VS: Rename VS 14 generator to 'Visual Studio 14 2015'
Help: target_include_directories does not allow target names
Utilities/Sphinx: Add missing call to note_explicit_target
FindJava: Do not accept OS X stub 'java' as Java
Fix lookup of source names after conversion to their actual case (#15259)
Help: Format set_property and get_property command docs
Help: Add 3.1 release notes for INSTALL property scope
CMakeParseImplicitLinkInfo: Fix implicit library logging
Makefile: Do not create an empty linker response file
FindOpenGL: Revert support for imported targets (#15267)
Help: Document Nsight Tegra toolchain configuration (#15276)
Utilities/Sphinx: Fix link targets for mixed-case command names
Modules: Rename FindXerces to FindXercesC
Help: Document file(GENERATE) signature option order
CMake 3.1.0-rc3
Cedric Perthuis (1):
VS: Add source file properties to set the hlsl shader entry point and model
Christoph Grüninger (1):
Help: Remove duplicate '#' in CMP0053 valid character list
Christopher Dembia (1):
Help: Add missing space to ctest -j option description
Christopher Gittner (1):
FindwxWidgets: Add versions 3.0.1 and 3.0.2
David Demelier (2):
Help: Fix typo in cmake-compile-features(7) manual
Help: Fix typo in CMAKE_CXX_KNOWN_FEATURES docs
Dmitry Polyanitsa (1):
VS: Change Nsight Tegra 2.0 Project Revision Number from 8 to 9
Fraser Hutchison (1):
Avoid if() quoted auto-dereference when checking for "MSVC"
Gilles Khouzam (3):
VS: Improve error messages when compiler is not detected (#15228)
VS: Do not produce WinMD file for OBJECT libraries (#15228)
VS: Add source file property to specify Windows App deployment location
Konstantin Podsvirov (1):
CPackIFW: Correction of the module documentation
Nils Gladitz (2):
FindOpenMP: Use fixed form Fortran test program
Help: Document installed file property API
Pascal Bach (1):
VS, WINCE: Fix entry point for Unicode builds
Rolf Eike Beer (1):
FindPythonInterp: fix version component variables for Python 1.4 (#15275)
Stephen Kelly (12):
Features: Don't record for AppleClang
Features: Test the CXX compiler only if it has features.
Features: Fix references to CXX compiler version in Clang-C.cmake.
Features: Record C++11 dialect switch only for GNU 4.7 and later.
Features: Fix the default C dialect for Clang and GNU.
Fix the test for running the CxxDialog unit test.
WCDH: Don't imply that MSVC is supported by the module.
WCDH: Make the header -Wundef safe for the C language.
Genex: Fix evaluation context propagation for TARGET_OBJECTS.
cmTarget: Don't allow relative paths in INTERFACE_SOURCES
Export: Disallow export of targets with INTERFACE_SOURCES
Help: Document the export limitation of INTERFACE_SOURCES.