Projects use `try_compile` to check if they will be able to compile some
particular source code. When a language standard variable like
`CMAKE_CXX_STANDARD` is set, then the project intends to compile source
code using a compiler mode for that standard. Therefore it makes sense
for `try_compile` to use that standard in the test project too.
Unfortunately this was not done when support for the
`CMAKE_CXX_STANDARD` variable was first implemented. Add a policy to
introduce the improved behavior in a compatible way.
Closes: #16456
Give `try_compile` callers a way to control the `CXX_STANDARD`,
`CXX_STANDARD_REQUIRED`, and `CXX_EXTENSIONS` properties of the
generated test target (or the `C` equivalents) in order to compile a
test source for a particular language standard.
Issue: #16456
f636d1e7 Help: Add notes for topic 'add-SHA-3'
cb5dba8e Tests: Add SHA-3 algorithm coverage to CPack checksum test
a9fa6099 ExternalProject: Add support for SHA-3 algorithms
b4ffd26f ExternalData: Add support for SHA-3 algorithms
60939702 file: Add support for SHA-3 algorithms
92f95aed string: Add support for SHA-3 algorithms
c326209f cmCryptoHash: Add support for SHA-3 algorithms
979e8ba6 Help: De-duplicate and spell out supported hash algorithms
7a79f7e3 librhash: Activate SHA-3 implementation
87584b5e Merge branch 'upstream-librhash' into add-SHA-3
7fcbd47e librhash 2016-11-06 (de79828d)
c50c32a3 librhash: Update import script to add SHA-3 implementation
Spell out the supported algorithms in a definition list in the
`string(<HASH>)` command documentation. Revise the `file(<HASH>)`
command and CPack module documentation to reference it instead of
duplicating the list.
The execute_process command starts all commands in parallel (in order
for the piping to work). Mention this explicitly and also add a note
about how to execute commands sequentially.
Explicitly state that this marks the `.xml` to tell the dashboard
server to append it to previously submitted results and that it
does not cause results to be appended to the `.xml` file.
adf1e32f Help: Add notes for topic 'ctest-capture-error'
d328dc68 CTest: Add CAPTURE_CMAKE_ERROR val to `ctest_*` commands
9ac2e189 ctest_coverage: If gcov is not found just warn, not error
If a `ctest_*` command has CAPTURE_CMAKE_ERROR then any errors generated
by cmake during that command will cause the value to be assigned `-1`.
This will prevent a `ctest -S` script from returning non-zero unless the
script explicitly calls `message(FATAL_ERROR)`.
Add `CMAKE_FIND_PACKAGE_SORT_{ORDER,DIRECTION}` variables to specify
sort order and direction.
When multiple package with the same name have been found in the same
location sorting option can be used to force a specific version to be
loaded (e.g. libA_1.12.0 instead of libA_1.1.0). Currently sorting by
NAME and by NATURAL order have been implemented.
Natural ordering makes use of the `strverscmp(3)` ordering.
Add options to the `install()` and `export()` commands to export the
targets we build into Android.mk files that reference them as prebuilt
libraries with associated usage requirements (compile definitions,
include directories, link libraries). This will allow CMake-built
projects to be imported into projects using the Android NDK build
system.
Closes: #15562
Make backslashes visible in the text. Rename VARIABLE to <var> in
second signature for consistency with the first signature. Add link to
referenced MSDN documentation.
The `ARGC`/`ARGV#` variables in function scope hold the original
arguments with no ;-list flattening. Add a way for functions to
cleanly parse arguments that may contain `;`. This also avoids
extra copying of the arguments.
Co-Author: Brad King <brad.king@kitware.com>
Provide a way for custom commands to inform the ninja build tool about
their implicit dependencies. For now simply make use of the option an
error on other generators.
Closes: #15479
Find packages that install their cmake package configuration files in
`lib/cmake/<name>` when they are installed in the default Windows
CMAKE_INSTALL_PREFIX, `C:/Program Files/<name>`.
Closes: #16212
Add a ``FIND_LIBRARY_USE_LIB32_PATHS`` global property analogous to the
``FIND_LIBRARY_USE_LIB64_PATHS`` property. This helps find commands on
multilib systems that use ``lib32`` directories and either do not have
``lib`` symlinks or point ``lib`` to ``lib64``.
Add a `CMAKE_TRY_COMPILE_PLATFORM_VARIABLES` variable to specify a list
of custom variables to be forwarded to a `try_compile` test project.
This will be useful for platform information modules or toolchain files
to forward some platform-specific set of variables from the host project
(perhaps set in its cache) to the test project so that it can build the
same way.
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.
