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+# The module defines the following variables:
+# HG_EXECUTABLE - path to mercurial command line client (hg)
+# HG_FOUND - true if the command line client was found
+# HG_VERSION_STRING - the version of mercurial found
+# Example usage:
+# find_package(Hg)
+# if(HG_FOUND)
+# message("hg found: ${HG_EXECUTABLE}")
+# endif()
+
+#=============================================================================
+# Copyright 2010-2012 Kitware, Inc.
+# Copyright 2012 Rolf Eike Beer <eike@sf-mail.de>
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+# License text for the above reference.)
+
+find_program(HG_EXECUTABLE
+ NAMES hg
+ PATH_SUFFIXES Mercurial
+ DOC "hg command line client"
+ )
+mark_as_advanced(HG_EXECUTABLE)
+
+if(HG_EXECUTABLE)
+ execute_process(COMMAND ${HG_EXECUTABLE} --version
+ OUTPUT_VARIABLE hg_version
+ ERROR_QUIET
+ OUTPUT_STRIP_TRAILING_WHITESPACE)
+ if(hg_version MATCHES "^Mercurial Distributed SCM \\(version ([0-9][^)]*)\\)")
+ set(HG_VERSION_STRING "${CMAKE_MATCH_1}")
+ endif()
+ unset(hg_version)
+endif()
+
+# Handle the QUIETLY and REQUIRED arguments and set HG_FOUND to TRUE if
+# all listed variables are TRUE
+include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
+find_package_handle_standard_args(Hg
+ REQUIRED_VARS HG_EXECUTABLE
+ VERSION_VAR HG_VERSION_STRING)