From 865a7c63df278214f2585804374089ad126da271 Mon Sep 17 00:00:00 2001
From: Tom Mason <wheybags@wheybags.com>
Date: Mon, 19 Aug 2013 19:59:58 +0100
Subject: [PATCH] cmake for system libunshield

---
 CMakeLists.txt               |  8 +++++-
 apps/launcher/CMakeLists.txt |  4 +--
 cmake/FindLibUnshield.cmake  | 48 ++++++++++++++++++++++++++++++++++++
 3 files changed, 56 insertions(+), 4 deletions(-)
 create mode 100644 cmake/FindLibUnshield.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 99a7e85a46..148a56d3cd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -499,7 +499,6 @@ endif(WIN32)
 add_subdirectory (extern/shiny)
 add_subdirectory (extern/oics)
 add_subdirectory (extern/sdl4ogre)
-add_subdirectory (extern/unshield)
 
 # Components
 add_subdirectory (components)
@@ -516,6 +515,13 @@ if (BUILD_ESMTOOL)
 endif()
 
 if (BUILD_LAUNCHER)
+    if(NOT WIN32)
+        find_package(LIBUNSHIELD REQUIRED)
+        if(NOT LIBUNSHIELD_FOUND)
+               message(SEND_ERROR "Failed to find libunshield")
+        endif(NOT LIBUNSHIELD_FOUND)
+    endif(NOT WIN32)
+
    add_subdirectory( apps/launcher )
 endif()
 
diff --git a/apps/launcher/CMakeLists.txt b/apps/launcher/CMakeLists.txt
index e11b713bc4..9b812e4bab 100644
--- a/apps/launcher/CMakeLists.txt
+++ b/apps/launcher/CMakeLists.txt
@@ -71,8 +71,6 @@ QT4_WRAP_CPP(MOC_SRCS ${LAUNCHER_HEADER_MOC})
 QT4_WRAP_UI(UI_HDRS ${LAUNCHER_UI})
 
 
-message(STATUS "hello ${LIBUNSHIELD_INCLUDE}")
-
 include(${QT_USE_FILE})
 include_directories(${CMAKE_CURRENT_BINARY_DIR} ${LIBUNSHIELD_INCLUDE})
 
@@ -102,7 +100,7 @@ target_link_libraries(omwlauncher
     ${SDL2_LIBRARY}
     ${QT_LIBRARIES}
     components
-    libunshield
+    ${LIBUNSHIELD_LIBRARY}
 )
 
 
diff --git a/cmake/FindLibUnshield.cmake b/cmake/FindLibUnshield.cmake
new file mode 100644
index 0000000000..4f4e98a1cd
--- /dev/null
+++ b/cmake/FindLibUnshield.cmake
@@ -0,0 +1,48 @@
+# Locate LIBUNSHIELD
+# This module defines
+# LIBUNSHIELD_LIBRARY
+# LIBUNSHIELD_FOUND, if false, do not try to link to LibUnshield
+# LIBUNSHIELD_INCLUDE_DIR, where to find the headers
+#
+# Created by Tom Mason (wheybags) for OpenMW (http://openmw.com), based on FindMPG123.cmake
+#
+# Ripped off from other sources. In fact, this file is so generic (I
+# just did a search and replace on another file) that I wonder why the
+# CMake guys haven't wrapped this entire thing in a single
+# function. Do we really need to repeat this stuff for every single
+# library when they all work the same? </today's rant>
+
+FIND_PATH(LIBUNSHIELD_INCLUDE_DIR libunshield.h
+  HINTS
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /usr/local
+  /usr
+  /sw # Fink
+  /opt/local # DarwinPorts
+  /opt/csw # Blastwave
+  /opt
+  /usr/include
+)
+
+FIND_LIBRARY(LIBUNSHIELD_LIBRARY 
+  unshield
+  HINTS
+#  PATH_SUFFIXES lib64 lib libs64 libs libs/Win32 libs/Win64
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /usr/local
+  /usr
+  /sw
+  /opt/local
+  /opt/csw
+  /opt
+  /usr/lib
+)
+
+IF(LIBUNSHIELD_LIBRARY AND LIBUNSHIELD_INCLUDE_DIR)
+  SET(LIBUNSHIELD_FOUND "YES")
+ENDIF(LIBUNSHIELD_LIBRARY AND LIBUNSHIELD_INCLUDE_DIR)
+