We can't yet ship a fully libgit2 v1.2.0-compatible library due to a
missing public symbol, but we can allow the v1.1.0-era codebase to link
against libgit2 v1.2.0 in the meantime.
This change adds `NewCredentialSSHKeyFromSigner`, which allows idiomatic
use of SSH keys from Go. This also lets us spin off an SSH server in the
tests.
This change introduces the file deprecated.go, which contains any
constants, functions, and types that are slated to be deprecated in the
next major release.
These symbols are deprecated because they refer to old spellings in
pre-1.0 libgit2. This also makes the build be done with the
`-DDEPRECATE_HARD` flag to avoid regressions.
This, together with
[gorelease](https://godoc.org/golang.org/x/exp/cmd/gorelease)[1] should
make releases safer going forward.
1: More information about how that works at
https://go.googlesource.com/exp/+/refs/heads/master/apidiff/README.md
The major version must still be an exact match since libgit2 uses
semantic versioning and changes to the major number indicate backwards
incompatible changes to the API.
Fixes: #695
#### Problem:
The current `CMAKE_INSTALL_PREFIX` value for the `system` build mode is `/usr`. However, in`macOS` as an example, you cannot write to `/usr` without `sudo` permission.
#### Proposed solution:
Enable changing the value to `/usr/local` (or any other path). This change makes the script use the value of the environment variable `SYSTEM_INSTALL_PREFIX` to select the installation path. If the variable is not set, it fallback to the path `/usr`.
### What this change is doing?
This change aims to enable us to set the `VENDORED_PATH` as an environment variable and failback to the default value if the environment variable is not set. Thus, this change should not break current behavior.
### Why we need this?
This will enable using the script to build libgit2 form source code downloaded manually.
Example:
```sh
LIBGIT2_VER="1.0.1"
DOWNLOAD_URL="https://codeload.github.com/libgit2/libgit2/tar.gz/v${LIBGIT2_VER}""
LIBGIT2_PATH="${HOME}/libgit2-${LIBGIT2_VER}"
wget -O "${LIBGIT2_PATH}.tar.gz" "$DOWNLOAD_URL"
tar -xzvf "${LIBGIT2_PATH}.tar.gz"
VENDORED_PATH=$LIBGIT2_PATH sh ./script/build-libgit2.sh --static
```
This change:
* Builds the library with Go 1.14, too.
* Builds the non-legacy tests with Ubuntu Focal (20.04).
* Adds testing for system-wide libraries, both static and dynamic
versions.
* Fixes a typo in the README.
Upstream libgit2 has migrated to use the GNUInstallDirs module to decide
where things will be installed to by default. While it improves
consistency with the host system, we're not really after that when
building the vendored libgit2 library, and in fact libgit2.{a,pc} may
now be installed into a different directory than before as it started to
depend on the host platform.
Fix this by explicitly specifying that we want the library and pkgconfig
file to be installed into a plain "lib/" directory.
This change removes the `LIB_INSTALL_DIR` and `INCLUDE_INSTALL_DIR` from
the `script/build-libgit2.sh` script, since they are now unneeded and
just print a warning if they are used.
This change:
* Updates the GitHub actions so that they run different commands for the
dynamic and static flavors of libgit2.
* Updates the .travis.yml file so that it does roughly the same as the
GitHub actions.
* Adds the release-* branches to the CI configurations.
lhchavez
nmeum
Suhaib Mujahid
Patrick Steinhardt
Carlos Martín Nieto