From 124f30dbbc30b0153e1070a5db09e577b4af1919 Mon Sep 17 00:00:00 2001
From: Miodrag Milanovic <mmicko@gmail.com>
Date: Thu, 8 Dec 2016 11:46:15 +0100
Subject: [PATCH] Enable building projects that are separate of MAME but use
 same core and lives in separate git tree (nw)

---
 .gitignore           |  1 +
 makefile             |  8 ++++++++
 projects/.gitignore  |  3 +++
 projects/README.md   |  4 ++++
 scripts/genie.lua    | 14 +++++++++++++-
 scripts/src/main.lua |  4 ++++
 6 files changed, 33 insertions(+), 1 deletion(-)
 create mode 100644 projects/.gitignore
 create mode 100644 projects/README.md

diff --git a/.gitignore b/.gitignore
index 06cd6107cc..bbd044d929 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,6 +21,7 @@
 !/language/
 !/nl_examples/
 !/plugins/
+!/projects/
 !/regtests/
 !/samples/
 !/scripts/
diff --git a/makefile b/makefile
index f342c481ac..1b3e5851e5 100644
--- a/makefile
+++ b/makefile
@@ -217,6 +217,10 @@ endif
 # build scripts will be run from
 # scripts/target/$(TARGET)/$(SUBTARGET).lua
 #-------------------------------------------------
+ifdef PROJECT
+PARAMS += --PROJECT='$(PROJECT)'
+TARGET := $(PROJECT)
+endif
 
 ifndef TARGET
 TARGET := mame
@@ -800,8 +804,12 @@ SCRIPTS += scripts/target/$(TARGET)/mess.lua
 endif
 
 ifndef SOURCES
+ifdef PROJECT 
+SCRIPTS += projects/$(PROJECT)/scripts/target/$(TARGET)/$(SUBTARGET_FULL).lua
+else
 SCRIPTS += scripts/target/$(TARGET)/$(SUBTARGET_FULL).lua
 endif
+endif
 
 ifdef REGENIE
 SCRIPTS+= regenie
diff --git a/projects/.gitignore b/projects/.gitignore
new file mode 100644
index 0000000000..06f2df04ad
--- /dev/null
+++ b/projects/.gitignore
@@ -0,0 +1,3 @@
+*
+!/.gitignore
+!/README.md
diff --git a/projects/README.md b/projects/README.md
new file mode 100644
index 0000000000..c04bc3f7c9
--- /dev/null
+++ b/projects/README.md
@@ -0,0 +1,4 @@
+# **Projects** #
+
+This is place where source code projects outside of MAME lives.
+Here you can git clone that kind of project and make it with "make PROJECT=example"
\ No newline at end of file
diff --git a/scripts/genie.lua b/scripts/genie.lua
index 7a4668e7d1..653c8b69e3 100644
--- a/scripts/genie.lua
+++ b/scripts/genie.lua
@@ -386,6 +386,11 @@ newoption {
 	description = "Produce WebAssembly output when building with Emscripten.",
 }
 
+newoption {
+	trigger = "PROJECT",
+	description = "Select projects to be built. Will look into project folder for files.",
+}
+
 dofile ("extlib.lua")
 
 if _OPTIONS["SHLIB"]=="1" then
@@ -516,7 +521,14 @@ msgprecompile ("Precompiling $(subst ../,,$<)...")
 
 messageskip { "SkipCreatingMessage", "SkipBuildingMessage", "SkipCleaningMessage" }
 
-if (_OPTIONS["SOURCES"] == nil) then
+if (_OPTIONS["PROJECT"] ~= nil) then
+	PROJECT_DIR = path.join(path.getabsolute(".."),"projects",_OPTIONS["PROJECT"]) .. "/"
+	if (not os.isfile(path.join("..", "projects", _OPTIONS["PROJECT"], "scripts", "target", _OPTIONS["target"],_OPTIONS["subtarget"] .. ".lua"))) then
+		error("File definition for TARGET=" .. _OPTIONS["target"] .. " SUBTARGET=" .. _OPTIONS["subtarget"] .. " does not exist")
+	end
+	dofile (path.join(".." ,"projects", _OPTIONS["PROJECT"], "scripts", "target", _OPTIONS["target"],_OPTIONS["subtarget"] .. ".lua"))
+end
+if (_OPTIONS["SOURCES"] == nil and _OPTIONS["PROJECT"] == nil) then
 	if (not os.isfile(path.join("target", _OPTIONS["target"],_OPTIONS["subtarget"] .. ".lua"))) then
 		error("File definition for TARGET=" .. _OPTIONS["target"] .. " SUBTARGET=" .. _OPTIONS["subtarget"] .. " does not exist")
 	end
diff --git a/scripts/src/main.lua b/scripts/src/main.lua
index ccc0eb3023..a78965a52b 100644
--- a/scripts/src/main.lua
+++ b/scripts/src/main.lua
@@ -276,8 +276,12 @@ end
 	links {
 		ext_lib("zlib"),
 		ext_lib("flac"),
+	}
+if (STANDALONE~=true) then
+	links {
 		ext_lib("sqlite3"),
 	}
+end
 
 	if _OPTIONS["NO_USE_MIDI"]~="1" then
 		links {