build FEATURE include cmake find module that can be used in other projects
diff --git a/FindLibYANG.cmake b/FindLibYANG.cmake
new file mode 100644
index 0000000..b3478b1
--- /dev/null
+++ b/FindLibYANG.cmake
@@ -0,0 +1,80 @@
+# - Try to find LibYANG
+# Once done this will define
+#
+# LIBYANG_FOUND - system has LibYANG
+# LIBYANG_INCLUDE_DIRS - the LibYANG include directory
+# LIBYANG_LIBRARIES - Link these to use LibSSH
+#
+# Author Radek Krejci <rkrejci@cesnet.cz>
+# Copyright (c) 2015 CESNET, z.s.p.o.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+# derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+if (LIBYANG_LIBRARIES AND LIBYANG_INCLUDE_DIRS)
+ # in cache already
+ set(LIBYANG_FOUND TRUE)
+else (LIBYANG_LIBRARIES AND LIBYANG_INCLUDE_DIRS)
+
+ find_path(LIBYANG_INCLUDE_DIR
+ NAMES
+ libyang/libyang.h
+ PATHS
+ /usr/include
+ /usr/local/include
+ /opt/local/include
+ /sw/include
+ ${CMAKE_INCLUDE_PATH}
+ ${CMAKE_INSTALL_PREFIX}/include
+ )
+
+ find_library(LIBYANG_LIBRARY
+ NAMES
+ yang
+ libyang
+ PATHS
+ /usr/lib
+ /usr/lib64
+ /usr/local/lib
+ /usr/local/lib64
+ /opt/local/lib
+ /sw/lib
+ ${CMAKE_LIBRARY_PATH}
+ ${CMAKE_INSTALL_PREFIX}/lib
+ )
+
+ if (LIBYANG_INCLUDE_DIR AND LIBYANG_LIBRARY)
+ set(LIBYANG_FOUND TRUE)
+ else (LIBYANG_INCLUDE_DIR AND LIBYANG_LIBRARY)
+ set(LIBYANG_FOUND FALSE)
+ endif (LIBYANG_INCLUDE_DIR AND LIBYANG_LIBRARY)
+
+ set(LIBYANG_INCLUDE_DIRS ${LIBYANG_INCLUDE_DIR})
+ set(LIBYANG_LIBRARIES ${LIBYANG_LIBRARY})
+
+ # show the LIBYANG_INCLUDE_DIRS and LIBYANG_LIBRARIES variables only in the advanced view
+ mark_as_advanced(LIBYANG_INCLUDE_DIRS LIBYANG_LIBRARIES)
+
+endif (LIBYANG_LIBRARIES AND LIBYANG_INCLUDE_DIRS)
+