From 4898ecbaf89e4da49e04f06fe3db7c16d5591b73 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <mailroxas@gmail.com>
Date: Sun, 23 Aug 2015 18:00:29 +0300
Subject: [PATCH] Include subproject.cmake

---
 CMake/subproject.cmake | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 CMake/subproject.cmake

diff --git a/CMake/subproject.cmake b/CMake/subproject.cmake
new file mode 100644
index 0000000..9809f2d
--- /dev/null
+++ b/CMake/subproject.cmake
@@ -0,0 +1,20 @@
+function(add_subproject name)
+   if(ARGC GREATER 1)
+      set(package_name ${ARGV1})
+   else()
+      set(package_name ${name})
+   endif()
+
+   if(TARGET ${name})
+      message("Subproject ${name} already included, skipping")
+   else()
+      find_package(${package_name} QUIET)
+      string(TOUPPER ${package_name} upper)
+      if(NOT SOURCE_${upper} AND ${upper}_FOUND)
+         message("Found ${package_name} on system")
+      else()
+         message("Adding ${name} as subdirectory")
+         add_subdirectory(${name} EXCLUDE_FROM_ALL)
+      endif()
+   endif()
+endfunction()