From 0a0bfa56d0d0df5917bb3858ec614d8f37d32309 Mon Sep 17 00:00:00 2001
From: Joseph Davies <deledrius@gmail.com>
Date: Sat, 23 Jul 2011 16:34:25 -0700
Subject: [PATCH] Add Python check in cmake process to allow optional
 resource.dat creation.

---
 Sources/Plasma/Apps/plClient/CMakeLists.txt | 16 +++++++++++-
 cmake/FindPythonModule.cmake                | 29 +++++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 cmake/FindPythonModule.cmake

diff --git a/Sources/Plasma/Apps/plClient/CMakeLists.txt b/Sources/Plasma/Apps/plClient/CMakeLists.txt
index fd4ccd22..6ae04615 100644
--- a/Sources/Plasma/Apps/plClient/CMakeLists.txt
+++ b/Sources/Plasma/Apps/plClient/CMakeLists.txt
@@ -15,6 +15,18 @@ include_directories(${OPENSSL_INCLUDE_DIR})
 include_directories(${PYTHON_INCLUDE_DIR})
 include_directories(${CURL_INCLUDE_DIR})
 
+# Test for Python Interpreter, which will be used for extra build scripts if available
+find_package(PythonInterp)
+if(PYTHONINTERP_FOUND)
+    include(FindPythonModule)
+    # Test for Python modules needed to build resource.dat
+    find_python_module(rsvg)
+    find_python_module(Image)
+    if((DEFINED PY_RSVG) AND (DEFINED PY_IMAGE))
+        set(BUILD_RESOURCE_DAT ON)
+    endif((DEFINED PY_RSVG) AND (DEFINED PY_IMAGE))
+endif(PYTHONINTERP_FOUND)
+
 add_subdirectory(external)
 
 set(plClient_HEADERS
@@ -51,7 +63,9 @@ set(plClient_RESOURCES
 add_executable(plClient WIN32 ${plClient_SOURCES} ${plClient_HEADERS}
                               ${plClient_TEXT} ${plClient_RESOURCES})
 
-add_dependencies(plClient externalResources)
+if(BUILD_RESOURCE_DAT)
+    add_dependencies(plClient externalResources)
+endif(BUILD_RESOURCE_DAT)
 
 if(PLASMA_EXTERNAL_RELEASE)
     set_target_properties(plClient PROPERTIES OUTPUT_NAME "UruExplorer")
diff --git a/cmake/FindPythonModule.cmake b/cmake/FindPythonModule.cmake
new file mode 100644
index 00000000..d17cefb1
--- /dev/null
+++ b/cmake/FindPythonModule.cmake
@@ -0,0 +1,29 @@
+# Test for the existence of a specified Python Module
+#
+# From http://ompl.hg.sourceforge.net/hgweb/ompl/ompl/file/tip/CMakeModules/FindPython.cmake
+
+
+if(DEFINED PYTHON_EXECUTABLE)
+
+function(find_python_module module)
+	string(TOUPPER ${module} module_upper)
+	if(NOT PY_${module_upper})
+		if(ARGC GREATER 1 AND ARGV1 STREQUAL "REQUIRED")
+			set(${module}_FIND_REQUIRED TRUE)
+		endif()
+		# A module's location is usually a directory, but for binary modules
+		# it's a .so file.
+		execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c"
+			"import re, ${module}; print re.compile('/__init__.py.*').sub('',${module}.__file__)"
+			RESULT_VARIABLE _${module}_status
+			OUTPUT_VARIABLE _${module}_location
+			ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
+		if(NOT _${module}_status)
+			set(PY_${module_upper} ${_${module}_location} CACHE STRING
+				"Location of Python module ${module}")
+		endif(NOT _${module}_status)
+	endif(NOT PY_${module_upper})
+	find_package_handle_standard_args(PY_${module} DEFAULT_MSG PY_${module_upper})
+endfunction(find_python_module)
+
+endif(DEFINED PYTHON_EXECUTABLE)