From 1d830986199516160a4b31c7f802aee77c6a866c Mon Sep 17 00:00:00 2001
From: David Cernat <davidcernat@gmail.com>
Date: Fri, 24 Mar 2017 07:28:33 +0200
Subject: [PATCH] [Build] Use slilghtly retooled version of CMake's default
 FindLua51

---
 cmake/FindLua.cmake   | 70 -------------------------------
 cmake/FindLua51.cmake | 95 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+), 70 deletions(-)
 delete mode 100644 cmake/FindLua.cmake
 create mode 100644 cmake/FindLua51.cmake

diff --git a/cmake/FindLua.cmake b/cmake/FindLua.cmake
deleted file mode 100644
index 646aaaf6b..000000000
--- a/cmake/FindLua.cmake
+++ /dev/null
@@ -1,70 +0,0 @@
-# - Try to find Lua
-# Once done this will define
-#
-#  Lua_FOUND - system has Lua
-#  Lua_INCLUDES - the Lua include directory
-#  Lua_LIBRARY - Link these to use Lua
-
-FIND_LIBRARY (Lua_LIBRARY_RELEASE NAMES lua5.1
-    PATHS
-    ENV LD_LIBRARY_PATH
-    ENV LIBRARY_PATH
-    /usr/lib64
-    /usr/lib
-    /usr/local/lib64
-    /usr/local/lib
-    /opt/local/lib
-    $ENV{Lua_ROOT}/lib
-    )
-	
-FIND_LIBRARY (Lua_LIBRARY_DEBUG NAMES lua5.1
-    PATHS
-    ENV LD_LIBRARY_PATH
-    ENV LIBRARY_PATH
-    /usr/lib64
-    /usr/lib
-    /usr/local/lib64
-    /usr/local/lib
-    /opt/local/lib
-    $ENV{Lua_ROOT}/lib
-    )	
-	
-	
-
-FIND_PATH (Lua_INCLUDES lua5.1/lua.h
-    ENV CPATH
-    /usr/include
-    /usr/local/include
-    /opt/local/include
-    $ENV{Lua_ROOT}/include
-    )
- 
-IF(Lua_INCLUDES AND Lua_LIBRARY_RELEASE)
-    SET(Lua_FOUND TRUE)
-ENDIF(Lua_INCLUDES AND Lua_LIBRARY_RELEASE)
-
-IF(NOT Lua_LIBRARY_DEBUG)
-    SET(Lua_LIBRARY_DEBUG ${Lua_LIBRARY_RELEASE})
-ENDIF()
-
-IF(Lua_FOUND)
-  SET(Lua_INCLUDES ${Lua_INCLUDES})
-
-  find_package(ZLIB REQUIRED)
-  
-   IF (CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE)
-        SET(Lua_LIBRARY optimized ${Lua_LIBRARY_RELEASE} debug ${Lua_LIBRARY_DEBUG} ${ZLIB_LIBRARIES})
-      ELSE()
-        # if there are no configuration types and CMAKE_BUILD_TYPE has no value
-        # then just use the release libraries
-        SET(Lua_LIBRARY ${Lua_LIBRARY_RELEASE} ${ZLIB_LIBRARIES})
-      ENDIF()
-  IF(NOT Lua_FIND_QUIETLY)
-    MESSAGE(STATUS "Found Lua: ${Lua_LIBRARIES}")
-  ENDIF(NOT Lua_FIND_QUIETLY)
-ELSE(Lua_FOUND)
-  IF(Lua_FIND_REQUIRED)
-    MESSAGE(FATAL_ERROR "Could not find Lua")
-  ENDIF(Lua_FIND_REQUIRED)
-ENDIF(Lua_FOUND)
-
diff --git a/cmake/FindLua51.cmake b/cmake/FindLua51.cmake
new file mode 100644
index 000000000..bfa8c5655
--- /dev/null
+++ b/cmake/FindLua51.cmake
@@ -0,0 +1,95 @@
+#.rst:
+# FindLua51
+# ---------
+#
+#
+#
+# Locate Lua library This module defines
+#
+# ::
+#
+#   LUA51_FOUND, if false, do not try to link to Lua
+#   LUA_LIBRARIES
+#   LUA_INCLUDE_DIR, where to find lua.h
+#   LUA_VERSION_STRING, the version of Lua found (since CMake 2.8.8)
+#
+#
+#
+# Note that the expected include convention is
+#
+# ::
+#
+#   #include "lua.h"
+#
+# and not
+#
+# ::
+#
+#   #include <lua/lua.h>
+#
+# This is because, the lua location is not standardized and may exist in
+# locations other than lua/
+
+#=============================================================================
+# Copyright 2007-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+find_path(LUA_INCLUDE_DIR lua.h
+  HINTS
+    ENV LUA_DIR
+    ENV LUA_INCLUDE_DIR
+  PATH_SUFFIXES include/lua51 include/lua5.1 include/lua-5.1 include/lua include
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /sw # Fink
+  /opt/local # DarwinPorts
+  /opt/csw # Blastwave
+  /opt
+  NO_DEFAULT_PATH
+)
+
+find_library(LUA_LIBRARY
+  NAMES lua51 lua5.1 lua-5.1 lua
+  HINTS
+    ENV LUA_DIR
+  PATH_SUFFIXES lib
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /sw
+  /opt/local
+  /opt/csw
+  /opt
+)
+
+if(LUA_LIBRARY)
+  # include the math library for Unix
+  if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU)
+    find_library(LUA_MATH_LIBRARY m)
+    set( LUA_LIBRARIES "${LUA_LIBRARY};${LUA_MATH_LIBRARY}" CACHE STRING "Lua Libraries")
+  # For Windows and Mac, don't need to explicitly include the math library
+  else()
+    set( LUA_LIBRARIES "${LUA_LIBRARY}" CACHE STRING "Lua Libraries")
+  endif()
+endif()
+
+if(LUA_INCLUDE_DIR AND EXISTS "${LUA_INCLUDE_DIR}/lua.h")
+  file(STRINGS "${LUA_INCLUDE_DIR}/lua.h" lua_version_str REGEX "^#define[ \t]+LUA_RELEASE[ \t]+\"Lua .+\"")
+
+  string(REGEX REPLACE "^#define[ \t]+LUA_RELEASE[ \t]+\"Lua ([^\"]+)\".*" "\\1" LUA_VERSION_STRING "${lua_version_str}")
+  unset(lua_version_str)
+endif()
+
+IF(LUA_INCLUDE_DIR AND LUA_LIBRARY)
+    SET(LUA_FOUND TRUE)
+ENDIF(LUA_INCLUDE_DIR AND LUA_LIBRARY)