From 055e0d94cf770d657cd8d54b6a2d331452add9f5 Mon Sep 17 00:00:00 2001
From: Jeremy <51220084+jeremy-rifkin@users.noreply.github.com>
Date: Wed, 28 Feb 2024 22:09:54 -0600
Subject: [PATCH] Use ccache if possible, at top-level

---
 CMakeLists.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8daabc3..c39d2f4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,6 +23,13 @@ include(GNUInstallDirs)
 include(CheckCXXSourceCompiles)
 include(CheckCXXCompilerFlag)
 
+if(PROJECT_IS_TOP_LEVEL)
+  find_program(CCACHE_FOUND ccache)
+  if(CCACHE_FOUND)
+    set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
+  endif()
+endif()
+
 if(PROJECT_IS_TOP_LEVEL)
   if(CMAKE_GENERATOR STREQUAL "Ninja")
     if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")