Environment setup

We currently support building on the following platforms:

x86-64 & AArch64 Ubuntu 16.04, 18.04, 20.04
x86-64 CentOS 7.x, 8.x
x86-86 SLES 12, 15

Other platforms might also work but are not well tested. To set up the build environment from scratch, refer to the specific docker files, e.g. docker/ubuntu1804.df.

Building Dependencies

Running ./buildall.sh in the top level directory produces the binaries for the current versions of all packages. This will likely take several hours the first time you run it. If you rerun the script, it checks the build and check directories for preexisting artifacts and only regenerates them if not present.

Sources

By default, the sources for the different packages are downloaded from an S3 bucket provided by Cloudera. If desired, it's possible to download the exact version of the package and simply move it to the source directory.

For example, if you want to download the gcc source manually, find the gcc-4.9.2.tar.gz archive and copy it to source/gcc. If the file is present it will not be downloaded again.

Building a Specific Package

To build a specific package run:

./build.sh package package.version

for example:

./build.sh python 2.7.15

Its possible as well to build several packages at once.

./build.sh python 2.7.15 llvm 3.3-p5

Here, the arguments are package version pairs.

Mac OS X

To build on Mac we cannot use a custom GCC, so we have to use the system compiler:

SYSTEM_GCC=1 DEBUG=1 ./buildall.sh

How do I contribute code?

You need to first sign and return an ICLA and CCLA before we can accept and redistribute your contribution. Once these are submitted you are free to start contributing to native-toolchain. Submit these to CLA@cloudera.com.

Find

We use Github issues to track bugs for this project. Find an issue that you would like to work on (or file one if you have discovered a new issue!). If no-one is working on it, assign it to yourself only if you intend to work on it shortly.

It’s a good idea to discuss your intended approach on the issue. You are much more likely to have your patch reviewed and committed if you’ve already got buy-in from the native-toolchain community before you start.

Fix

Now start coding! As you are writing your patch, please keep the following things in mind:

First, please include tests with your patch. If your patch adds a feature or fixes a bug and does not include tests, it will generally not be accepted. If you are unsure how to write tests for a particular component, please ask on the issue for guidance.

Second, please keep your patch narrowly targeted to the problem described by the issue. It’s better for everyone if we maintain discipline about the scope of each patch. In general, if you find a bug while working on a specific feature, file a issue for the bug, check if you can assign it to yourself and fix it independently of the feature. This helps us to differentiate between bug fixes and features and allows us to build stable maintenance releases.

Finally, please write a good, clear commit message, with a short, descriptive title and a message that is exactly long enough to explain what the problem was, and how it was fixed.

Please post your patch to the native-toolchain project at https://gerrit.cloudera.org for review. See Impala's guide on using gerrit to submit and review patches for instructions on how to send patches to http://gerrit.cloudera.org, except make sure to send your patch to the native-toolchain project instead of Impala-ASF.

License

arenadata/native-toolchain

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