### 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
```
(cherry picked from commit f3a746d7b6)
Co-authored-by: Suhaib Mujahid <suhaibmujahid@gmail.com>
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.
(cherry picked from commit 5314951759)
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.
(cherry picked from commit 26edffd5f5)
CGO can perform variable substitution in the directives, so we don't
need to use a script to set up the variables; we can let the go tool do
it for us.
We have our own libgit2 in a submodule, so this is unnecessary. While in
the area, update which version of libgit2 would be downloaded and remove
unnecessary CMake flags.
The cgo directives let us do a lot more than I previously thought, so we
can use this to make the building process of git2go go through the go
tool directly rather than via the script.
libgit2 still needs to be built manually, so we do still require make,
but only for building libgit2. Once that's built, any modifications to
git2go's own code can be built with
go build
github-actions[bot]
lhchavez
Carlos Martín Nieto
Carlos Martín Nieto
Dmitri Shuralyov
Quinn Slack
Matthias Kadenbach