mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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c53895310a
Always call FindPackageHandleStandardArgs() and allow it to set DOCUTILS_FOUND appropriately. By marking DOCUTILS_VERSION as required we'll also get a useful error message if the version string from RST2HTML_EXECUTABLE could not be parsed correctly.
93 lines
3.1 KiB
CMake
93 lines
3.1 KiB
CMake
#
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# Copyright 2013 Pixar
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#
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# Licensed under the Apache License, Version 2.0 (the "Apache License")
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# with the following modification; you may not use this file except in
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# compliance with the Apache License and the following modification to it:
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# Section 6. Trademarks. is deleted and replaced with:
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#
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# 6. Trademarks. This License does not grant permission to use the trade
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# names, trademarks, service marks, or product names of the Licensor
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# and its affiliates, except as required to comply with Section 4(c) of
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# the License and to reproduce the content of the NOTICE file.
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#
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# You may obtain a copy of the Apache License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the Apache License with the above modification is
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# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the Apache License for the specific
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# language governing permissions and limitations under the Apache License.
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#
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# - Try to find the restructured text to HTML converter
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#
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# Once done this will define
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#
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# DOCUTILS_FOUND - System has Docutils
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#
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# RST2HTML_EXECUTABLE
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find_package(PackageHandleStandardArgs)
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find_program( RST2HTML_EXECUTABLE
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NAMES
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rst2html.py
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rst2html
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DOC
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"The Python Docutils reStructuredText to HTML converter"
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)
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if (RST2HTML_EXECUTABLE)
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# Note we only check for a python interpreter and use it for the command
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# on Windows. It would be cleaner if we could agree that this is the
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# right way to do it for all platforms, or find a way that works for all
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# platforms uniformly.
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if (WIN32)
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find_package(PythonInterp)
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if (NOT PYTHON_EXECUTABLE)
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message(FATAL_ERROR "Could not find Python interpreter, which is required for Docutils")
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endif()
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execute_process(COMMAND ${PYTHON_EXECUTABLE} ${RST2HTML_EXECUTABLE} --version OUTPUT_VARIABLE VERSION_STRING )
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else()
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execute_process(COMMAND ${RST2HTML_EXECUTABLE} --version OUTPUT_VARIABLE VERSION_STRING )
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endif()
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# The above code may fail to find a version. Which will make the REGEX
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# REPLACE below fail and break the build. So we check for an empty
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# VERSION_STRING.
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if (NOT "${VERSION_STRING}" STREQUAL "")
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# find the version
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# ex : rst2html (Docutils 0.6 [release], Python 2.6.6, on linux2)
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string(REGEX MATCHALL "([^\ ]+\ |[^\ ]+$)" VERSION_TOKENS "${VERSION_STRING}")
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# isolate the 3rd. word in the string
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list (GET VERSION_TOKENS 2 VERSION_STRING)
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# remove white space
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string(REGEX REPLACE "[ \t]+$" "" VERSION_STRING ${VERSION_STRING})
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string(REGEX REPLACE "^[ \t]+" "" VERSION_STRING ${VERSION_STRING})
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set(DOCUTILS_VERSION ${VERSION_STRING})
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endif()
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Docutils
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REQUIRED_VARS
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RST2HTML_EXECUTABLE
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DOCUTILS_VERSION
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VERSION_VAR
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DOCUTILS_VERSION
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)
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mark_as_advanced(
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RST2HTML_EXECUTABLE
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)
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