Preface and Background

I originally wanted to use 7-Zip with a Go app. Thus, I stumbled upon the sevenzip-go binding on Go Packages.

After adding sevenzip-go, the Go app refused to run and crashed. I then found out this binding relies on a native c7zip.dll (Windows) or libc7zip.so (Linux) shared library.

So I checked out libc7zip to see if there was any precompiled binary releases for use. Turns out that it only offers source releases, which means I have to build it myself if I need it. I cloned a copy of the repository and tried to build it, it failed. So I spent time looking through the project and troubleshooting the build failure.

The last change before my fork was in 2018, and it seems like it is no longer being maintained. The changes I added are minor. They include:

• Removing files related to itch.io CI/CD system/process
• Changing 7-Zip source download from 7-zip.org to sourceforge.net mirror
• Adding GitHub Actions CI (Linux/Windows x86_64)

My purpose of forking this repository is to log the changes and edits I have to add to make it build and work successfully. A second reason is to share the binary releases with whoever needs them without having to figure out the build process like I did. So anyone who needs the libc7zip.so or c7zip.dll can just download it.

I am not aware if a ready binary download can be obtained elsewhere and I simply missed it.

The rest of the original README is retained unedited below.

libc7zip

A wrapper over lib7zip so it can be used from C without callbacks.

This uses this particular lib7zip fork:

• https://github.com/itchio/lib7zip

Building

The library is built using CMake, and downloads lib7zip automatically, all you need to do is the usual steps to build a CMake projet, for example:

mkdir build
cd build
cmake ..
make

If all goes well, libc7zip.{dll,so,dylib} will be in the build/ folder. It's statically linked with lib7zip, so you don't need to worry about it.

This library was made for internal purposes, to expose the 7-zip API to https://github.com/itchio/butler.

As a result, I probably won't be accepting issues/PRs on this repo. Cheers!

License

• libc7zip itself is distributed under the MIT license (see the LICENSE file)
  • except for the utf conversion code, which is LGPL 2.1 (from 7-zip)
• lib7zip is distributed under the MPL 2.0 license: https://github.com/itchio/lib7zip
• 7-zip is LGPL 2.1 + some other terms, depending on which build you use: http://7-zip.org/faq.html