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101 lines
2.6 KiB
CMake
101 lines
2.6 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file LICENSE.rst or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindGnuplot
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-----------
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Finds the Gnuplot command-line graphing utility for generating two- and
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three-dimensional plots (``gnuplot``):
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.. code-block:: cmake
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find_package(Gnuplot [<version>] [...])
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Result Variables
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^^^^^^^^^^^^^^^^
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This module defines the following variables:
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``Gnuplot_FOUND``
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Boolean indicating whether (the requested version of) Gnuplot has been
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found. For backward compatibility, the ``GNUPLOT_FOUND`` variable is also
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set to the same value.
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``Gnuplot_VERSION``
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.. versionadded:: 4.2
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The version of Gnuplot found.
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.. note::
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Version detection is available only for Gnuplot 4 and later. Earlier
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versions did not provide version output.
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Cache Variables
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^^^^^^^^^^^^^^^
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The following cache variables may also be set:
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``GNUPLOT_EXECUTABLE``
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Absolute path to the ``gnuplot`` executable.
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Deprecated Variables
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^^^^^^^^^^^^^^^^^^^^
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The following variables are provided for backward compatibility:
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``GNUPLOT_VERSION_STRING``
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.. deprecated:: 4.2
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Superseded by the ``Gnuplot_VERSION``.
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The version of Gnuplot found.
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Examples
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^^^^^^^^
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Finding Gnuplot and executing it in a process:
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.. code-block:: cmake
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find_package(Gnuplot)
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if(Gnuplot_FOUND)
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execute_process(COMMAND ${GNUPLOT_EXECUTABLE} --help)
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endif()
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#]=======================================================================]
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include(${CMAKE_CURRENT_LIST_DIR}/FindCygwin.cmake)
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include(${CMAKE_CURRENT_LIST_DIR}/FindMsys.cmake)
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find_program(GNUPLOT_EXECUTABLE
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NAMES
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gnuplot
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pgnuplot
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wgnupl32
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PATHS
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${CYGWIN_INSTALL_PATH}/bin
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${MSYS_INSTALL_PATH}/usr/bin
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)
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if (GNUPLOT_EXECUTABLE)
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execute_process(COMMAND "${GNUPLOT_EXECUTABLE}" --version
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OUTPUT_VARIABLE GNUPLOT_OUTPUT_VARIABLE
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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string(REGEX REPLACE "^gnuplot ([0-9\\.]+)( patchlevel )?" "\\1." Gnuplot_VERSION "${GNUPLOT_OUTPUT_VARIABLE}")
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string(REGEX REPLACE "\\.$" "" Gnuplot_VERSION "${Gnuplot_VERSION}")
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set(GNUPLOT_VERSION_STRING "${Gnuplot_VERSION}")
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unset(GNUPLOT_OUTPUT_VARIABLE)
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endif()
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# for compatibility
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set(GNUPLOT ${GNUPLOT_EXECUTABLE})
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Gnuplot
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REQUIRED_VARS GNUPLOT_EXECUTABLE
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VERSION_VAR Gnuplot_VERSION)
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mark_as_advanced( GNUPLOT_EXECUTABLE )
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