Add project goals to CONTRIBUTING.md.
PiperOrigin-RevId: 362386747
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
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--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -3,6 +3,26 @@
We'd love to accept your patches and contributions to this project. There are
just a few small guidelines you need to follow.
+## Project Goals
+
+In addition to the aims listed at the top of the [README](README.md) Snappy
+explicitly supports the following:
+
+1. C++11
+2. Clang (gcc and MSVC are best-effort).
+3. Low level optimizations (e.g. assembly or equivalent intrinsics) for:
+ 1. [x86](https://en.wikipedia.org/wiki/X86)
+ 2. [x86-64](https://en.wikipedia.org/wiki/X86-64)
+ 3. ARMv7 (32-bit)
+ 4. ARMv8 (AArch64)
+4. Supports only the Snappy compression scheme as described in
+ [format_description.txt](format_description.txt).
+5. CMake for building
+
+Changes adding features or dependencies outside of the core area of focus listed
+above might not be accepted. If in doubt post a message to the
+[Snappy discussion mailing list](https://groups.google.com/g/snappy-compression).
+
## Contributor License Agreement
Contributions to this project must be accompanied by a Contributor License
