Add our mono runtimes to the build.

.gitignore

@@ -1,3 +1,5 @@
 Make.config.local
 Make.config.inc
+_ios-build
+_mac-build
 

.gitmodules

@@ -0,0 +1,8 @@
+[submodule "external/llvm"]
+	path = external/llvm
+	url = git://github.com/mono/llvm.git
+	branch = master
+[submodule "external/mono"]
+	path = external/mono
+	url = git://github.com/mono/mono.git
+	branch = mono-4.5.0-branch

Make.config

@@ -209,6 +209,11 @@ DEVICETV_SDK               = $(XCODE_DEVELOPER_ROOT)/Platforms/AppleTVOS.platfor
 DEVICETV_CFLAGS            = -arch arm64 -mtvos-version-min=$(MIN_TVOS_SDK_VERSION) -isysroot $(DEVICETV_SDK) $(CFLAGS) -fembed-bitcode $(IOS_COMMON_DEFINES)
 DEVICETV_OBJC_CFLAGS       = $(DEVICETV_CFLAGS) $(DEVICE_OBJC_CFLAGS)
 
+# paths to the modules we depend on, as variables, so people can put
+# things in other places if they absolutely must.
+MONO_PATH=$(TOP)/external/mono
+LLVM_PATH=$(TOP)/external/llvm
+
 MONO_PREFIX ?= /Library/Frameworks/Mono.framework/Versions/Current
 SYSTEM_MCS=$(MONO_PREFIX)/bin/mcs
 SYSTEM_SN=$(MONO_PREFIX)/bin/sn

Makefile

@@ -1,4 +1,4 @@
 TOP=.
-SUBDIRS=
+SUBDIRS=builds
 include $(TOP)/Make.config
 include $(TOP)/mk/versions.mk

builds/.gitignore

@@ -0,0 +1,21 @@
+.stamp*
+*.config.cache
+install
+mac32
+mac64
+llvm
+llvm64
+simulator86
+simulator64
+watchsimulator
+tvsimulator
+tools64
+cross
+cross64
+crosstv
+cross-watch
+target7
+target7s
+target64
+targettv
+targetwatch