Do not force a specific policy version in the module because it prevents
projects from setting newer policies to NEW. In particular, projects
may want to set CMP0056 to NEW to affect any try_compile calls in this
module.
Use of this was added in commit v2.8.2~539 (New CheckTypeSize for OS X
Universal Binaries, 2009-12-17) and updated in commit v3.1.0-rc1~511^2~1
(Do not change minimum required version in modules, 2014-05-07). The
history does not clearly explain why a specific policy version was
introduced. If specific policies need to be NEW then we can add
explicit settings for them.
Some modules change CMake minimum required version when they are
included. For example:
cmake_minimum_required(VERSION 2.8.12)
message("${CMAKE_MINIMUM_REQUIRED_VERSION}")
include(CheckTypeSize)
message("${CMAKE_MINIMUM_REQUIRED_VERSION}")
will produce the following output:
2.8.12
2.6
This patch ensures that when you include a CMake module the minimum
required version and the policies set are left unchanged.
Fixes Issue #14864
The matches have already been calculated and can simply be taken from
CMAKE_MATCH_n variables. This avoids multiple compilations of the same or very
similar regular expressions.
This example now works without need to enable C language:
cmake_minimum_required(VERSION x.x.x)
project(foo CXX)
include(CheckTypeSize)
check_type_size("short" SIZEOF_SHORT LANGUAGE CXX)
Fixes#14056
Previously if headers required to check the size of a type can be
compiled with C++ compiler only, the check would fail because the C
compiler fails. As a consequence, HAVE_${VARIABLE} would be set to
false, and ${VARIABLE} will be empty.
Teach CHECK_TYPE_SIZE to accept a new optional argument LANGUAGE
that allows one to explicitly set the compiler to use. The new
signature is therefore:
CHECK_TYPE_SIZE(TYPE VARIABLE [BUILTIN_TYPES_ONLY]
[LANGUAGE <language>])
Imported targets are re-exported so that they can be used by the
try_compile generated code with target_link_libraries.
This makes the use of the cmake_expand_imported_targets macro
obsolete. The macro is not able to expand the generator expressions
which may appear in the IMPORTED_LINK_INTERFACE_LIBRARIES content.
Instead it just sees them as 'not a target'.
Ancient versions of CMake required else(), endif(), and similar block
termination commands to have arguments matching the command starting the
block. This is no longer the preferred style.
Run the following shell code:
for c in else endif endforeach endfunction endmacro endwhile; do
echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/'
done >convert.sed &&
git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' |
egrep -z -v '^(Utilities/cm|Source/kwsys/)' |
egrep -z -v 'Tests/CMakeTests/While-Endwhile-' |
xargs -0 sed -i -f convert.sed &&
rm convert.sed
Add the function cmake_expand_imported_targets() to expand imported
targets in a list of libraries into their on-disk file names for a
particular configuration. Adapt the implementation from KDE's
HANDLE_IMPORTED_TARGETS_IN_CMAKE_REQUIRED_LIBRARIES which has been in
use for over 2 years. Call the function from all the Check*.cmake
macros to handle imported targets named in CMAKE_REQUIRED_LIBRARIES.
Alex
We re-implement this module to support architecture-dependent type
sizes. In the mixed-size case we generate C preprocessor code to select
the detected type size for each architecture.
This adds copyright/license notification blocks CMake's non-find
modules. Most of the modules had no notices at all. Some had notices
referring to the BSD license already. This commit normalizes existing
notices and adds missing notices.
ENH: change test for endianess from TRY_RUN() to TRY_COMPILE() by testing
the binary image of a 16bit integer array, tested on Linux x86, Intel Mac
and Sun (big endian)
Alex
Tested with various gcc, XCode, MSVC7, sdcc
For OSX when doing TRY_COMPILE() CMAKE_OSX_ARCHITECTURES is used, if there are different results an error is generated. CMAKE_OSX_ARCHITECTURES can be overwritten for the TRY_COMPILES with CMAKE_TRY_COMPILE_OSX_ARCHITECTURES.
Alex
-add a RESULT_VARIABLE to INCLUDE()
-add CMAKE_TOOLCHAIN_FILE for specifiying your (potentially crosscompiling) toolchain
-have TRY_RUN() complain if you try to use it in crosscompiling mode (which were compiled but cannot run on this system)
-use CMAKE_EXECUTABLE_SUFFIX in TRY_RUN(), probably TRY_RUN won't be able to
run the executables if they have a different suffix because they are
probably crosscompiled, but nevertheless it should be able to find them
-make several cmake variables presettable by the user: CMAKE_C/CXX_COMPILER, CMAKE_C/CXX_OUTPUT_EXTENSION, CMAKE_SYSTEM_NAME, CMAKE_SYSTEM_INFO_FILE
-support prefix for GNU toolchains (arm-elf-gcc, arm-elf-ar, arm-elf-strip etc.)
-move ranlib on OSX from the file command to a command in executed in cmake_install.cmake
-add support for stripping during install in cmake_install.cmake
-split out cl.cmake from Windows-cl.cmake, first (very incomplete) step to support MS crosscompiling tools
-remove stdio.h from the simple C program which checks if the compiler works, since this may not exist for some embedded platforms
-create a new CMakeFindBinUtils.cmake which collects the search fro ar, ranlib, strip, ld, link, install_name_tool and other tools like these
-add support for CMAKE_FIND_ROOT_PATH for all FIND_XXX commands, which is a
list of directories which will be prepended to all search directories, right
now as a cmake variable, turning it into a global cmake property may need
some more work
-remove cmTestTestHandler::TryExecutable(), it's unused
-split cmFileCommand::HandleInstall() into slightly smaller functions
Alex
Brad King
Rolf Eike Beer
Sebastian Leske
Daniele E. Domenichelli
Clinton Stimpson
Kitware Robot
Stephen Kelly
Alex Neundorf
Todd Gamblin
Bill Hoffman
Ken Martin
Andy Cedilnik