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-rw-r--r--Modules/FindGnuplot.cmake57
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diff --git a/Modules/FindGnuplot.cmake b/Modules/FindGnuplot.cmake
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+# - this module looks for gnuplot
+#
+# Once done this will define
+#
+# GNUPLOT_FOUND - system has Gnuplot
+# GNUPLOT_EXECUTABLE - the Gnuplot executable
+# GNUPLOT_VERSION_STRING - the version of Gnuplot found (since CMake 2.8.8)
+#
+# GNUPLOT_VERSION_STRING will not work for old versions like 3.7.1.
+
+#=============================================================================
+# Copyright 2002-2009 Kitware, Inc.
+#
+# 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.)
+
+INCLUDE(FindCygwin)
+
+FIND_PROGRAM(GNUPLOT_EXECUTABLE
+ NAMES
+ gnuplot
+ pgnuplot
+ wgnupl32
+ PATHS
+ ${CYGWIN_INSTALL_PATH}/bin
+)
+
+IF (GNUPLOT_EXECUTABLE)
+ EXECUTE_PROCESS(COMMAND "${GNUPLOT_EXECUTABLE}" --version
+ OUTPUT_VARIABLE GNUPLOT_OUTPUT_VARIABLE
+ ERROR_QUIET
+ OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+ STRING(REGEX REPLACE "^gnuplot ([0-9\\.]+)( patchlevel )?" "\\1." GNUPLOT_VERSION_STRING "${GNUPLOT_OUTPUT_VARIABLE}")
+ STRING(REGEX REPLACE "\\.$" "" GNUPLOT_VERSION_STRING "${GNUPLOT_VERSION_STRING}")
+ UNSET(GNUPLOT_OUTPUT_VARIABLE)
+ENDIF()
+
+# for compatibility
+SET(GNUPLOT ${GNUPLOT_EXECUTABLE})
+
+# handle the QUIETLY and REQUIRED arguments and set GNUPLOT_FOUND to TRUE if
+# all listed variables are TRUE
+INCLUDE(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(Gnuplot
+ REQUIRED_VARS GNUPLOT_EXECUTABLE
+ VERSION_VAR GNUPLOT_VERSION_STRING)
+
+MARK_AS_ADVANCED( GNUPLOT_EXECUTABLE )
+