From ae5258faec99adee80ed26e0822241c3eff7c66c Mon Sep 17 00:00:00 2001
From: Miodrag Milanovic <mmicko@gmail.com>
Date: Sat, 2 Apr 2016 17:48:31 +0200
Subject: [PATCH] Added PRECOMPILE=0 so in conjunction with ccache it gives
 better compile speed (nw)

---
 makefile          |  5 +++++
 scripts/genie.lua | 16 +++++++++++++---
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/makefile b/makefile
index c8673db1e24..dfed88cdca8 100644
--- a/makefile
+++ b/makefile
@@ -98,6 +98,7 @@
 # MSBUILD = 1
 # USE_LIBUV = 1
 # IGNORE_BAD_LOCALISATION=1
+# PRECOMPILE = 0
 
 ifdef PREFIX_MAKEFILE
 include $(PREFIX_MAKEFILE)
@@ -712,6 +713,10 @@ ifdef USE_LIBUV
 PARAMS += --USE_LIBUV='$(USE_LIBUV)'
 endif
 
+ifdef PRECOMPILE
+PARAMS += --precompile='$(PRECOMPILE)'
+endif
+
 #-------------------------------------------------
 # All scripts
 #-------------------------------------------------
diff --git a/scripts/genie.lua b/scripts/genie.lua
index 08cf0aa381d..92e3897217e 100644
--- a/scripts/genie.lua
+++ b/scripts/genie.lua
@@ -16,6 +16,14 @@ MAME_DIR = (path.getabsolute("..") .. "/")
 local MAME_BUILD_DIR = (MAME_DIR .. _OPTIONS["build-dir"] .. "/")
 local naclToolchain = ""
 
+newoption {
+	trigger = "precompile",
+	description = "Precompiled headers generation.",
+	allowed = {
+		{ "0",   "Disabled"     },
+		{ "1",   "Enabled"      },
+	}
+}
 
 function backtick(cmd)
 	result = string.gsub(string.gsub(os.outputof(cmd), "\r?\n$", ""), " $", "")
@@ -57,9 +65,11 @@ function layoutbuildtask(_folder, _name)
 end
 
 function precompiledheaders()
-	configuration { "not xcode4" }
-		pchheader("emu.h")
-	configuration { }
+	if _OPTIONS["precompile"]==nil or (_OPTIONS["precompile"]~=nil and _OPTIONS["precompile"]=="1") then
+		configuration { "not xcode4" }
+			pchheader("emu.h")
+		configuration { }
+	end
 end
 
 function addprojectflags()