add depends/lodepng

depends/CMakeLists.txt

@@ -1,4 +1,5 @@
 # list depends here.
+add_subdirectory(lodepng)
 add_subdirectory(lua)
 add_subdirectory(md5)
 add_subdirectory(protobuf)

depends/lodepng/CMakeLists.txt

@@ -0,0 +1,3 @@
+project(lodepng)
+add_library(lodepng STATIC EXCLUDE_FROM_ALL lodepng.cpp lodepng.h)
+ide_folder(lodepng "Depends")

depends/lodepng/LICENSE

@@ -0,0 +1,21 @@
+Copyright (c) 2005-2018 Lode Vandevenne
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+    1. The origin of this software must not be misrepresented; you must not
+    claim that you wrote the original software. If you use this software
+    in a product, an acknowledgment in the product documentation would be
+    appreciated but is not required.
+
+    2. Altered source versions must be plainly marked as such, and must not be
+    misrepresented as being the original software.
+
+    3. This notice may not be removed or altered from any source
+    distribution.
+