From 47be09431c2411482c6999d42f87b3e21428ca2d Mon Sep 17 00:00:00 2001
From: Shehzan Mohammed <shehzan@arrayfire.com>
Date: Wed, 23 Dec 2015 15:04:01 -0500
Subject: [PATCH] Building Lua (static) as external project

---
 CMakeLists.txt               |  6 ++++++
 CMakeModules/build_lua.cmake | 41 ++++++++++++++++++++++++++++++++++++
 CMakeModules/lua_MSVC.patch  | 21 ++++++++++++++++++
 3 files changed, 68 insertions(+)
 create mode 100644 CMakeLists.txt
 create mode 100644 CMakeModules/build_lua.cmake
 create mode 100644 CMakeModules/lua_MSVC.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..bd63c88
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,6 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+PROJECT(ArrayFire-Lua-Wrapper)
+
+SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules")
+
+INCLUDE(${CMAKE_MODULE_PATH}/build_lua.cmake)
diff --git a/CMakeModules/build_lua.cmake b/CMakeModules/build_lua.cmake
new file mode 100644
index 0000000..15a9269
--- /dev/null
+++ b/CMakeModules/build_lua.cmake
@@ -0,0 +1,41 @@
+INCLUDE(ExternalProject)
+
+SET(prefix ${CMAKE_BINARY_DIR}/third_party/lua)
+
+SET(lua_location "${prefix}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}lua${CMAKE_STATIC_LIBRARY_SUFFIX}")
+IF(CMAKE_VERSION VERSION_LESS 3.2)
+    IF(CMAKE_GENERATOR MATCHES "Ninja")
+        MESSAGE(WARNING "Building forge with Ninja has known issues with CMake older than 3.2")
+    endif()
+    SET(byproducts)
+ELSE()
+    SET(byproducts BYPRODUCTS ${lua_location})
+ENDIF()
+
+# FIXME Tag forge correctly during release
+ExternalProject_Add(
+    lua-ext
+    GIT_REPOSITORY https://github.com/LuaDist/lua.git
+    GIT_TAG 5.3.2
+    PATCH_COMMAND patch -p1 -t -N < ${CMAKE_MODULE_PATH}/lua_MSVC.patch
+    PREFIX "${prefix}"
+    INSTALL_DIR "${prefix}"
+    UPDATE_COMMAND ""
+    CONFIGURE_COMMAND ${CMAKE_COMMAND} -Wno-dev "-G${CMAKE_GENERATOR}" <SOURCE_DIR>
+    -DCMAKE_SOURCE_DIR:PATH=<SOURCE_DIR>
+    -DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
+    -DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
+    -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
+    -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
+    -DBUILD_SHARED_LIBS=OFF
+    -DLUA_BUILD_AS_DLL=OFF
+    ${byproducts}
+    )
+
+ExternalProject_Get_Property(lua-ext install_dir)
+ADD_LIBRARY(lua IMPORTED STATIC)
+SET_TARGET_PROPERTIES(lua PROPERTIES IMPORTED_LOCATION ${lua_location})
+ADD_DEPENDENCIES(lua lua-ext)
+SET(LUA_INCLUDE_DIRECTORIES ${install_dir}/include)
+SET(LUA_LIBRARIES lua)
+SET(LUA_FOUND ON)
diff --git a/CMakeModules/lua_MSVC.patch b/CMakeModules/lua_MSVC.patch
new file mode 100644
index 0000000..e463320
--- /dev/null
+++ b/CMakeModules/lua_MSVC.patch
@@ -0,0 +1,21 @@
+commit 4b61e31e44bac6b09bb70d3dbcd1b470b754bb71
+Author: Shehzan Mohammed <shehzan@arrayfire.com>
+Date:   Wed Dec 23 15:01:27 2015 -0500
+
+    Lua MSVC snprintf patch
+
+diff --git a/src/lprefix.h b/src/lprefix.h
+index 02daa83..b56f8f6 100644
+--- a/src/lprefix.h
++++ b/src/lprefix.h
+@@ -39,6 +39,10 @@
+ #define _CRT_SECURE_NO_WARNINGS  /* avoid warnings about ISO C functions */
+ #endif
+ 
++#if _MSC_VER < 1900
++#define snprintf sprintf_s
++#endif
++
+ #endif			/* } */
+ 
+ #endif