From b49a94fb83df3f9e0e81826692fb003a91129ae6 Mon Sep 17 00:00:00 2001
From: Jason Rhinelander <jason@imaginary.ca>
Date: Thu, 14 Jan 2021 14:38:32 -0400
Subject: [PATCH] Export compile commands and use ccache by default

---
 CMakeLists.txt | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d74da72..18de94a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,16 @@
+
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+find_program(CCACHE_PROGRAM ccache)
+if(CCACHE_PROGRAM)
+  foreach(lang C CXX)
+    if(NOT DEFINED CMAKE_${lang}_COMPILER_LAUNCHER AND NOT CMAKE_${lang}_COMPILER MATCHES ".*/ccache")
+      message(STATUS "Enabling ccache for ${lang}")
+      set(CMAKE_${lang}_COMPILER_LAUNCHER ${CCACHE_PROGRAM} CACHE STRING "")
+    endif()
+  endforeach()
+endif()
+
 cmake_minimum_required(VERSION 3.7)
 
 # Has to be set before `project()`, and ignored on non-macos: