From a4df4c6079135c9170a00099ab7f3b3b18178f28 Mon Sep 17 00:00:00 2001
From: Linus_Probert <linus.probert@netset.se>
Date: Fri, 16 Feb 2018 10:13:16 +0100
Subject: [PATCH] Adds ccache to build

This is mostly for fun and because I want to see how it works in travis.
---
 .travis.yml            |  1 +
 CMakeLists.txt         |  1 +
 cmake/FindCCache.cmake | 17 +++++++++++++++++
 3 files changed, 19 insertions(+)
 create mode 100644 cmake/FindCCache.cmake

diff --git a/.travis.yml b/.travis.yml
index 910c0db..0b849bf 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,7 @@
 sudo: required
 dist: trusty
 language: c
+cache: ccache
 compiler:
     - gcc
     - clang
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b70368d..34b4e2e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,7 @@ include(cmake/FindSDL2.cmake)
 include(cmake/FindSDL2_image.cmake)
 include(cmake/FindSDL2_ttf.cmake)
 include(cmake/FindSDL2_mixer.cmake)
+include(cmake/FindCCache.cmake)
 
 if (NOT WIN32)
 	include(FindX11)
diff --git a/cmake/FindCCache.cmake b/cmake/FindCCache.cmake
new file mode 100644
index 0000000..0d1985f
--- /dev/null
+++ b/cmake/FindCCache.cmake
@@ -0,0 +1,17 @@
+# FindCCache
+# ----------
+# Finds ccache and sets it up as compiler wrapper.
+# This should ideally be called before the call to project().
+#
+# See: https://crascit.com/2016/04/09/using-ccache-with-cmake/
+
+find_program(CCACHE_PROGRAM ccache)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(CCache REQUIRED_VARS CCACHE_PROGRAM)
+
+if(CCACHE_FOUND)
+  # Supports Unix Makefiles and Ninja
+  set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
+  set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK "${CCACHE_PROGRAM}")
+endif()
\ No newline at end of file