Add luarocks Rockspec file

First pass at moving the camera package to install via luarocks.

> luarocks make camera-1.0-0.rockspec

Author: bmartini

CMakeLists.txt

@@ -1,5 +1,10 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 2.6 FATAL_ERROR)
 CMAKE_POLICY(VERSION 2.6)
+IF(LUAROCKS_PREFIX)
+    MESSAGE(STATUS "Installing Torch through Luarocks")
+    STRING(REGEX REPLACE "(.*)lib/luarocks/rocks.*" "\\1" CMAKE_INSTALL_PREFIX  "${LUAROCKS_PREFIX}")
+    MESSAGE(STATUS "Prefix inferred from Luarocks: ${CMAKE_INSTALL_PREFIX}")
+ENDIF()
 FIND_PACKAGE(Torch REQUIRED)
 
 if (UNIX AND NOT APPLE)

camera-1.0-0.rockspec

@@ -0,0 +1,29 @@
+package = "camera"
+version = "1.0-0"
+
+source = {
+   url = "git://github.com/clementfarabet/lua---camera",
+   tag = "1.0-0"
+}
+
+description = {
+   summary = "A simple wrapper package to give torch access to a webcam",
+   detailed = [[
+Uses OpenCV on MacOS and video4linux2 on Linux to proved the low level access to the camera hardware.
+   ]],
+   homepage = "https://github.com/clementfarabet/lua---camera",
+   license = "BSD"
+}
+
+dependencies = {
+   "torch >= 7.0",
+   "xlua >= 1.0",
+   "sys >= 1.0",
+}
+
+build = {
+   type = "cmake",
+   variables = {
+      LUAROCKS_PREFIX = "$(PREFIX)"
+   }
+}