diff --git a/cmake/modules/BuildLedWidget.cmake b/cmake/modules/BuildLedWidget.cmake
new file mode 100644
--- /dev/null
+++ b/cmake/modules/BuildLedWidget.cmake
@@ -0,0 +1,30 @@
+#
+# Copyright © 2017 Hasan Yavuz Özderya
+#
+# This file is part of serialplot.
+#
+# serialplot is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# serialplot is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+include(ExternalProject)
+
+ExternalProject_Add(LEDW
+  PREFIX ledw
+  HG_REPOSITORY https://bitbucket.org/hyOzd/ledwidget
+  UPDATE_COMMAND ""
+  INSTALL_COMMAND "")
+
+ExternalProject_Get_Property(LEDW binary_dir source_dir)
+set(LEDWIDGET_INCLUDE_DIR ${source_dir}/src)
+set(LEDWIDGET_LIBRARY ${binary_dir}/libledwidget.a)