Even though the `file(GLOB)` documentation specifically warns against
using it to collect a list of source files, projects often do it anyway.
Since it uses `readdir()`, the list of files will be unsorted.
This list is often passed directly to add_executable / add_library.
Linking binaries with an unsorted list will make it unreproducible,
which means that the produced binary will differ depending on the
unpredictable `readdir()` order.
To solve those reproducibility issues in a lot of programs (which don't
explicitly `list(SORT)` the list manually), sort the resulting list of
the `file(GLOB)` command.
A more detailed rationale about reproducible builds is available
[here](https://reproducible-builds.org/).
Since commit v3.3.0-rc1~430^2 (Teach find_(library|file|path) to get
prefixes from PATH, 2015-02-18) we search in <prefix>/include and
<prefix>/lib directories for prefixes with bin directories in the PATH
environment variable. The motivation was to support MSYS, MinGW and
similar Windows platforms in their default environments automatically.
At the time this behavior was thought to be worthwhile in general.
Suggested-by: Chuck Atkins <chuck.atkins@kitware.com>
Teach the `add_custom_command` and `add_custom_target' commands to
substitute argv0 with the crosscompiling emulator if it is a target with
the `CROSSCOMPILING_EMULATOR` property set.
Create a `CMAKE_TRY_COMPILE_TARGET_TYPE` option to specify use
of `add_library(... STATIC ...)` for the generated test project.
This will be useful for cross-compiling toolchains that cannot
link a binary without custom flags or scripts.
The new `%s` format specifier is substituted by file()/string()
`TIMESTAMP` sub-commands with the number of seconds since unix-epoch
(1970-01-01 00:00:00 UTC).
Co-Author: Nils Gladitz <nilsgladitz@gmail.com>
The option does not actually participate in argument groups like the
others because it does not actually install anything. Fix the order
in the documentation accordingly.
Reported-by: Daniel Wirtz <daniel.wirtz@simtech.uni-stuttgart.de>
Implementation indicates that at least two components of VERSION must
be specified (see Source/cmCMakeMinimumRequired.cxx.) Therefore the
minor version is not optional.
Let us take an example of a project that has some tests in a component
that need to be installed into a dedicated test package. The user
expectation is that the result could be achieved by typing the
following:
make
make tests
make install
DESTDIR=/testpkgs make install-tests
However this results in test components in the default installation as
well as the testpkg.
Add an EXCLUDE_FROM_ALL option to the install() command to tell it that
the installation rule should not be included unless its component is
explicitly specified for installation.
The behaviour of double specified keywords is rather undefined or at
least not clearly documented. This change introduces a strict check and
emits a warning in case a keyword has been specified more than once.
Implement a native `cmake_parse_arguments` command that is fully
compatible with the documented behaviour of the previous implementation.
Leave the CMakeParseArguments module empty but existing for
compatibility.
CMake assumes that a SHARED library compiled on Windows will export a LIB file.
This is not actually the case on Visual C++ if the library does not export any
symbols, and causes incremental builds to break if the user specifies SHARED
anyway. (Users should use MODULE libraries instead.)
Set policy CMP0065 to the value used in the calling project.
Set the the value of CMAKE_ENABLE_EXPORTS if set in the calling
project to initialize the target property appropriately.
Add documentation and tests for the existing
CTEST_CUSTOM_MAXIMUM_PASSED_TEST_OUTPUT_SIZE
CTEST_CUSTOM_MAXIMUM_FAILED_TEST_OUTPUT_SIZE
CTest variables.
When more than one value is given to the NAMES option this command by
default will consider one name at a time and search every directory for
it. Add a NAMES_PER_DIR option to tell this command to consider one
directory at a time and search for all names in it.
In the get_filename_component command, add a new BASE_DIR parameter to
use with the ABSOLUTE and REALPATH options. This will be used when
finding an absolute path from a relative path.
if(TEST TestNameThatExists) will return true if a test with the name
TestNameThatExists has been added with add_test. The syntax is similar
to if(TARGET TargetName). Since use of "TEST" as an argument to if()
could previously be interpreted as a non-keyword argument, add policy
CMP0064 to treat it as a keyword as NEW behavior.
Drop the partial documentation of properties from the command
documentation and reference the main properties manual instead.
Otherwise readers may not realize there are many more properties.
Reiner Herrmann
Brad King
Jean-Christophe Fillion-Robin
Felix Geyer
Jose-Luis Blanco-Claraco
Horst Kronstorfer
Nick Lewis
Ashley Whetter
Bartosz Kosiorek
Yves Frederix
Matthias Maennich
Christopher Dembia
Ruslan Baratov
James Johnston
Robert Goulet
Chuck Atkins
Ben Boeckel
Christopher Meng
Matt McCormick
James Johnston