Provide a stream interface for Schannel - the native crypto APIs - on
Windows. This allows Windows to use the same HTTP transport that all the
other platforms use, with its own native crypto.
Ultimately this allows us to deprecate WinHTTP and we need not add
support for our socket changes in two places (our HTTP stack and the
WinHTTP stack).
xdiff is a dependency (from git core) and more properly belongs in the
'deps' directory. Move it there, and add a stub for cmake to resolve
xdiff from the system location in the future. (At present, bundled xdiff
remains hardcoded.)
Not everybody builds libgit2 using cmake; provide an `experimental.h`
with no experiments configured for those that do not. To support this,
we also now create compile definitions for experimental functionality,
to supplant that empty `experimental.h`. cmake will continue to generate
the proper `experimental.h` file for use with `make install`.
libgit2 can be built with optional, experimental sha256 support. This
allows consumers to begin testing and providing feedback for our sha256
support while we continue to develop it, and allows us to make API
breaking changes while we iterate on a final sha256 implementation.
The results will be `git2-experimental.dll` and installed as
`git2-experimental.h` to avoid confusion with a production libgit2.
Remove the "generic" implementation; it should never be used; it only
existed for a no-dependencies configuration, and our bundled sha1dc
satisfies that requirement _and_ is correct.
Instead of simply including the utility files directly, make them a
cmake object library for easy reusability between other projects within
libgit2.
Now the top-level `src` is responsible for platform selection, while the
next-level `libgit2` and `util` configurations are responsible for
identifying what objects they include.
Fix building against system http-parser library by fixing
the find_package() argument. It seems to have been accidentally changed
from HTTPParser to HTTP_Parser in de178d36f, effectively making
the build against system library fail to find it:
```
CMake Warning at cmake/SelectHTTPParser.cmake:3 (find_package):
By not providing "FindHTTP_Parser.cmake" in CMAKE_MODULE_PATH this project
has asked CMake to find a package configuration file provided by
"HTTP_Parser", but CMake did not find one.
Could not find a package configuration file provided by "HTTP_Parser" with
any of the following names:
HTTP_ParserConfig.cmake
http_parser-config.cmake
Add the installation prefix of "HTTP_Parser" to CMAKE_PREFIX_PATH or set
"HTTP_Parser_DIR" to a directory containing one of the above files. If
"HTTP_Parser" provides a separate development package or SDK, be sure it
has been installed.
Call Stack (most recent call first):
src/CMakeLists.txt:97 (include)
CMake Error at cmake/SelectHTTPParser.cmake:11 (message):
http-parser support was requested but not found
Call Stack (most recent call first):
src/CMakeLists.txt:97 (include)
```
On macOS, since Big Sur, the libraries were moved to a cache. The SDK comes
with stubs in the SDK (`/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk/usr/lib/`
or whatever SDK version one has installed) where most have the `.tbd` suffix
(although some still are `.a`). Forcing `CMAKE_FIND_LIBRARY_SUFFIXES` on Apple
platforms broke building, unless one has copies of the libraries installed
elsewhere (like Brew), as many libraries (like `iconv` or `pcre`) are not
found.
This fix disables setting the `CMAKE_FIND_LIBRARY_SUFFIXES` to `.a` if
the platform is `APPLE` when building static libs.
Also applies to *_BINARY_DIR.
This effectively reverts 84083dcc8b,
which broke all users of libgit2 that use it as a CMake subdirectory
(via `add_subdirectory()`). This is because CMAKE_SOURCE_DIR refers
to the root-most CMake directory, which in the case of
`add_subdirectory()` is a parent project to libgit2 and thus the paths
don't make any sense to the configuration files. Corollary,
CMAKE_SOURCE_DIR only makes sense if the CMake project is always the
root project - which can rarely be guaranteed.
In all honesty, CMake should deprecate and eventually remove
CMAKE_SOURCE_DIR and CMAKE_BINARY_DIR. It's been the source of headaches
and confusion for years, they're rarely useful over
CMAKE_CURRENT_(SOURCE|BINARY)_DIR or PROJECT_(SOURCE|BINARY)_DIR,
and they cause a lot of confusing configuration and source
code layouts to boot.
Any time they are used, they break `add_subdirectory()` almost 100% of
the time, cause confusing error messages, and hide subtle bugs.
Threading can now be disabled with `USE_THREADS=OFF` instead of
`THREADSAFE=OFF` to better support the other cmake semantics.
Nanosecond support is the default _if_ we can detect it. This should be
our default always - like threads - and people can opt out explicitly.
in #6083 the test runner was renamed to libgit2_tests,
but not all references to the old name were updated.
this change changes all of them to use the new name.
Provide an interface around OpenSSL to dynamically load the libraries
and symbols, so that users can distribute a libgit2 library that is not
linked directly against OpenSSL. This enables users to target multiple
distributions with a single binary.
This mechanism is optional and disabled by default. Configure cmake
with -DUSE_HTTPS=OpenSSL-Dynamic to use it.
In the past, we've imported the CheckPrototypeDefinition into our own
module directory as it wasn't yet available in all supported CMake
versions. Now that we require at least CMake v3.5, we don't need to
bundle it anymore as it's included with the distribution already.
Let's drop the included modules and always use upstream's version.
Our custom CMake module currently live in "cmake/Modules". As the
"cmake/" directory doesn't contain anything except the "Modules"
directory, it doesn't really make sense to have the additional
intermediate directory. So let's instead move the modules one level up
into the "cmake/" top level directory.
We currently use `FILE(GLOB ...)` in most places to find source and
header files. This is problematic in that the order of files returned
depends on the operating system's directory iteration order and may thus
not be deterministic. As a result, we link object files in unspecified
order, which may cause the linker to emit different code across runs.
Fix this issue by sorting all code used as input to the libgit2 library
to improve the reliability of reproducible builds.
We're currently doing unnecessary work to auto-detect backends even if
the functionality is disabled altogether. Let's fix this by removing the
extraneous FOO_BACKEND variables, instead letting auto-detection modify
the variable itself.
