message: Forgot to push; Mandatory at least for Windows
diff: @@ -34,7 +34,8 @@ option(BUILD_TESTS "jpeg" OFF)
  add_subdirectory(libjpeg)
  #manipulating libpng cmake options from within cmake script
  -option(PNG_BUILD_ZLIB "Custom zlib Location, else find_package is used" ON)
  +option(PNG_BUILD_ZLIB "Custom zlib Location, else find_package is used" OFF)
  +set(PNG_BUILD_ZLIB ON)
  set(ZLIB_INCLUDE_DIR ${THIRD_PARTY_SOURCE_DIR}/zlib) #for pnglib
  option(PNG_SHARED "Build shared lib" OFF)
  option(PNG_TESTS "Build libpng tests" OFF)
  