From 5e615649da966adf4c67741617283bbe8c6e6e9c Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@mozilla.com>
Date: Wed, 22 Mar 2023 12:08:12 +0100
Subject: [PATCH] Document how to use sccache action for C/C++ (#28)

---
 README.md | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/README.md b/README.md
index 553c956..d9bb1a4 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,30 @@ For Rust code, the following environment variables should be set:
       RUSTC_WRAPPER: "sccache"
 ```
 
+### C/C++ code
+
+For C/C++ code, the following environment variables should be set:
+
+```
+    env:
+      SCCACHE_GHA_ENABLED: "true"
+```
+
+With cmake, add the following argument:
+
+```
+-DCMAKE_C_COMPILER_LAUNCHER=sccache
+-DCMAKE_CXX_COMPILER_LAUNCHER=sccache
+```
+
+With configure, call it with:
+```
+# With gcc
+./configure CC="sccache gcc" CXX=scache gcc"
+# With clang
+./configure CC="sccache clang" CXX=scache clang"
+```
+
 ## Prepare a new release
 
 1. Update the example in README.md