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Improve the static build documentation a tiny bit

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- Accurately document the effect of GO_DYN_FLAGS
- Fix a typo
- Remove a shell script example; removes a docker command,
  we don't care to maintain it to run correctly,
  and anyone knowledgeable enough to understand the
  trade-offs of static linking can almost certainly create that from scratch.

Fixes #1700

Signed-off-by: Miloslav Trmač <mitr@redhat.com>
This commit is contained in:
Miloslav Trmač 2023-04-24 20:07:48 +02:00
parent b21f7e0be5
commit 1e6b333f26
1 changed files with 2 additions and 9 deletions
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install.md
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@ -235,15 +235,8 @@ There have been efforts in the past to produce and maintain static builds, but t
That being said, if you would like to build Skopeo statically, you might be able to do it by combining all the following steps. That being said, if you would like to build Skopeo statically, you might be able to do it by combining all the following steps.
- Export environment variable `CGO_ENABLED=0` (disabling CGO causes Go to prefer native libraries when possible, instead of dynamically linking against system libraries). - Export environment variable `CGO_ENABLED=0` (disabling CGO causes Go to prefer native libraries when possible, instead of dynamically linking against system libraries).
- Set the `BUILDTAGS=containers_image_openpgp` Make variable (this remove the dependency on `libgpgme` and its companion libraries). - Set the `BUILDTAGS=containers_image_openpgp` Make variable (this removes the dependency on `libgpgme` and its companion libraries).
- Clear the `GO_DYN_FLAGS` Make variable (which otherwise seems to force the creation of a dynamic executable). - Clear the `GO_DYN_FLAGS` Make variable if even a dependency on the ELF interpreter is undesirable.
The following command implements these steps to produce a static binary in the `bin` subdirectory of the repository:
```bash
docker run -v $PWD:/src -w /src -e CGO_ENABLED=0 golang \
make BUILDTAGS=containers_image_openpgp GO_DYN_FLAGS=
```
Keep in mind that the resulting binary is unsupported and might crash randomly. Only use if you know what you're doing! Keep in mind that the resulting binary is unsupported and might crash randomly. Only use if you know what you're doing!