Provide a standardized way to handle the C++ "standard" headers
customized to be used with current CMake C++ standard constraints.
Offer under directory `cm` headers which can be used as direct
replacements of the standard ones. For example:
#include <cm/string_view>
can be used safely for CMake development in place of the `<string_view>`
standard header.
Fixes: #19491
689fdbfc61 Utilities/Release: Drop linux64 script in favor of docker build
2d7cfd30ac Utilities/Release: Drop source archive generation in scripts
facc240a45 Utilities/Release: Add docker specs to build and test Linux binaries
bf832ccf01 Utilities/Release: Add README.rst describing directory content
ab153f17bf Utilities/Release: Drop machine-specific README
ed294c1664 Add option to skip CMake tests that need network access
4b8a864d52 Add option to test CMake itself against its hosting CMake
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Gregor Jasny <gjasny@googlemail.com>
Merge-request: !3727
We removed installation of `Help/index.rst` in commit d2fde94809 (Help:
Add infrastructure for guide-level documentation, 2019-05-30), but the
file is required for `--help-full` to work. Restore installation of the
file and update it to avoid referencing the `Help/guide` directory in
its toctree during processing by `cmRST`.
When building with the built-in Curl, CMAKE_USE_OPENSSL is only set
to ON by default if an OpenSSL installation is detected. However, this
can cause the user to mistakenly build without OpenSSL support if
OpenSSL is not installed, because CMAKE_USE_OPENSSL is set to OFF in
that case. Always set CMAKE_USE_OPENSSL to ON by default on systems
where it could be available, skipping the initial detection, resulting
in an error when we try to use OpenSSL later on. Detect this error
and advise the user to either install OpenSSL or set CMAKE_USE_OPENSSL
to OFF.
Co-Authored-by: Brad King <brad.king@kitware.com>
Create a `Help/guide/` directory to hold guide-level documents.
Build them in most documentation formats, but not as man pages.
Initialize the guide directory with a placeholder for the tutorial.
KWSys now computes a default `CMAKE_CXX_STANDARD` value if it is
not told what standard to use. When `CMake_NO_CXX_STANDARD` is
enabled, tell KWSys not to do that.
0310024563 curl: Update build within CMake to account for 7.61 changes
b9d1107790 curl: Backport to work with CMake 3.1 again
e9e8dcee6b Merge branch 'upstream-curl' into update-curl
18812a9c3d curl 2018-09-04 (432eb5f5)
ded211ae46 curl: Update script to get curl 7.61.1
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !2509
The_CURL_STATICLIB option was replaced by BUILD_SHARED_LIBS.
Drop our own CURL_STATICLIB compile definition because it is now
provided by curl's usage requirements.
CMake 3.12 introduced a `...<max>` syntax in the version given to
`cmake_minimum_required` to automatically set policies to NEW up
to that version. Use it to avoid listing policies explicitly.
The syntax is compatible with older versions of CMake such that they use
the extended version string for the `CMAKE_MINIMUM_REQUIRED_VERSION`
variable (which we don't use) but otherwise ignore it.
It is provided by `functional`, not `utility`. Fix the mapping added by
commit 276d3c7afe (IWYU: Add workaround mapping for std::hash,
2018-07-31). Also generalize the workaround from commit v3.12.0-rc1~39^2~1
(IWYU: Define a macro to tell code it is preprocessing for iwyu,
2018-05-25) to allow local builds to configure specific flags. This
is needed because iwyu behaves differently in different environments.
There are some cases where satisfying IWYU breaks compilation, such as
forward-declaring the `std::hash<>` template with C++ standard libraries
that use an inline namespace inside `std`. Define a macro during
include-what-you-use preprocessing so that code can adapt.
Compute a default for `BUILD_CursesDialog` by building a small test
project that uses curses. Disable `ccmake` by default if it fails,
and do not search for Curses as part of the main build. This avoids
creating FindCurses cache entries when we are not considering ccmake.
If `BUILD_CursesDialog` is enabled (e.g. by the user) then warn if
curses cannot be found.
Some environments require linking to thread libraries for `std::thread`.
Express this direct dependency of CMakeLib explicitly. Previously this
was done indirectly through our bundled libuv, but that does not work
when using a system libuv.
Fixes: #17757
Add a check that a simple source file can compile as C++17 that uses
some of the features we need. Do this only when hosted by CMake 3.8
or above because those versions are aware of C++17.
Check for unordered_map as we do in bootstrap since commit 375eca7881
(bootstrap: Check support for unordered_map from compiler mode,
2017-11-30). Also maintain the existing C++14 cstdio check.
The check for C++14 and cstdio is a special case of the more general
problem of checking that the compiler's C++14 mode supports everything
we need. Rename the checks accordingly.
Do not obscure IWYU's report with warnings from its internal Clang.
We have other testing for such warnings. Also, when compiling with
a non-Clang compiler we might use warning options that IWYU's Clang
does not understand, and we don't want to see warnings about that.
Currently a change to the clang-tidy configuration remains unnoticed for
incremental builds in the way that it won't trigger a rebuild. This can be
considered a missing dependency that this patch fixes by introducing a
compile time definition (-DCLANG_TIDY_SHA1) that triggers a rebuild upon
change. Currently this only applies to the target CMakeLib.
Signed-off-by: Matthias Maennich <matthias@maennich.net>
CMake can now compile as C++11 on all supported platforms. Check that
std::unique_ptr is available and fail early if missing. This will allow
us to use C++11 more broadly in CMake's implementation (previously it
was restricted to the serve mode implementation).
Co-Author: Daniel Pfeifer <daniel@pfeifer-mail.de>
The libuv library provides many useful platform abstractions and better
process management than KWSys. We'd like to use it everywhere instead
of just in the server mode. Drop the `CMAKE_USE_LIBUV` option and use
libuv everywhere except during bootstrap.
CMake will soon require both C++11 and libuv to build. Neither of
these works on HP-UX, so unfortunately we need to drop support for
the platform until someone can get them working.
Issue: #17137
