As asked by the OP, I'll post my comment as an answer.
To get the cilk-plus
sources as a tarball:
- In the install docs, there is a section labelled a. cilkplus. Under it there is a subsection labelled iii. Using a snapshot.
- In that subsection there is a link to the
gcc
git repository. Click on it. - When the webpage is loaded, search at the top for the first link. At the time of writing this it was named [gcc/]. However, the name may change. The link we need is the one with colored tags next to it.
- Once located search, in the same line, for a link named snapshot at the right corner.
- Click on it and wait while the tarball is generated.
NOTE: The link provided in the docs sometimes point to a rather old revision of the source code. To get the most recent one (1 or 2 days old at most) click on the summary section in the menu bar. There should appear an entry with the colored tags master and trunk next to it.