Add a version number to the `SetupForDevelopment.sh` script and use
a pre-commit hook to check when it changes.

The `Utilities/GitSetup` directory is useful only in Git work trees
and so does not need to be distributed with source tarballs.

GitSetup upstream added an attribute to export `.gitattributes` so that
importing snapshots into the sources of other projects would bring along
the attributes.  However, we don't want to export them from CMake.  Drop
`.gitattributes` entries not relevant to CMake.

This avoid build errors from the
    /usr/include/sys/feature_tests.h
include file which disallows setting XOpen
versions less than 6 when in C99 mode.

Iyyappa Murugandi authored 8 years ago and Brad King committed 8 years ago

The `Setup.Configuration.h` which is released by Microsoft is specific
to MSVC.  Update it to compile with non-MS toolchains like MinGW.

Iyyappa Murugandi authored 8 years ago and Brad King committed 8 years ago

The Visual Studio Setup team releases a `Setup.Configuration.h` header
under the MIT License for use by external applications to interact with
the Visual Studio Installer tool [1].  Import it into our source tree
for use by CMake.

[1] https://github.com/microsoft/vs-setup-samples

KWSys is now hosted on Kitware's GitLab instance.

We already disable the code using `HIDES_CURL_PRIVATE_SYMBOLS`, so skip
the code to set it too, thus avoiding unnecessary `message()` calls.

Fix `rhash_sha256_final` to use unsigned integers for left shifting to
avoid the possibility of undefined overflow behavior.

OpenSSL 1.1 made some CTX structures opaque.  Port our code to use the
structures only through pointers via OpenSSL 1.1 APIs.  Use our adaption
layer to make this work with OpenSSL 1.0 and below.

Patch-by: Tomas Mraz <tmraz@redhat.com>
Patch-from: https://bugzilla.redhat.com/1383744

Add private forwarding headers for `openssl/{evp,hmac}.h` to give us a
central place to add adaptation code to work across multiple
incompatible OpenSSL versions.  Provide compatibility implementations of
some OpenSSL 1.1 APIs when using older OpenSSL versions.

Update the prebuilt binary build configurations for machines where
we build our own OpenSSL library to use a newer version.

Create a CMAKE_USE_SYSTEM_LIBRHASH option.

All clients of `cm_sha2` have been ported to `cmCryptoHash`, which now
uses librhash internally.

Fix `rhash_md5_final` to use unsigned integers for left shifting to
avoid the possibility of undefined overflow behavior.

We cannot fall back to the macro implementation because some call sites
may call it with an argument like `*ptr++` that has side effects.

When we install using the bundled librhash source, notify users of its
license terms.

Add '-w' or equivalent flag on compilers supporting it.
Tell MSVC to use its lowest warning level inside librhash sources.

Update `ustd.h` to include KWSys Large File Support configuration so
that consistent stream libraries are used (on AIX with XL).

Add a `cm_rhash.h` header to include the CMake-provided copy of the
`rhash.h` header from CMake sources.

We only need a subset of the hash algorithms supported by librhash.
Add preprocessor conditionals to remove source fragments that we do
not need.  Write an alternative algorithm enumeration that matches
the indexing on our reduced array.

Also remove a few fragments outright.

We now define code layout by clang-format and enforce whitespace with
Git hooks.  There is no need to run KWStyle anymore, as all we used it
to check was line length anyway.

Alex Wang authored 8 years ago and Brad King committed 8 years ago

The clang-format pass in commit v3.6.0-rc1~54^2~1 (Revise C++ coding
style using clang-format, 2016-05-16) changed the template right angle
brackets from `>>` to `> >`, which defeats the purpose of this test.
Change it back and exclude this content from formatting.

On Linux the gzip tool is universally available, so our `.tar.gz` is
sufficient.

On macOS the gzip tool is universally available, so our `.tar.gz` is
sufficient.

The machine that builds the Linux binary has python 3 and 2.6, but the
latter is too old for the server mode test script.