OpenSubdiv/cmake/FindDocutils.cmake
George ElKoura 7eef4c33e1 Allow using docutils on Windows
On Windows we now look for and use an explicit python interpreter to
find the version of docutils installed.  There is more information in
the commit, but it would result in a much cleaner change if we could
decide that it's okay to do this for all platforms.  For now, just do it
for Windows to get us unblocked.
2019-03-02 12:17:04 -08:00

92 lines
2.9 KiB
CMake

#
# Copyright 2013 Pixar
#
# Licensed under the Apache License, Version 2.0 (the "Apache License")
# with the following modification; you may not use this file except in
# compliance with the Apache License and the following modification to it:
# Section 6. Trademarks. is deleted and replaced with:
#
# 6. Trademarks. This License does not grant permission to use the trade
# names, trademarks, service marks, or product names of the Licensor
# and its affiliates, except as required to comply with Section 4(c) of
# the License and to reproduce the content of the NOTICE file.
#
# You may obtain a copy of the Apache License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the Apache License with the above modification is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the Apache License for the specific
# language governing permissions and limitations under the Apache License.
#
# - Try to find the restructured text to HTML converter
#
# Once done this will define
#
# DOCUTILS_FOUND - System has Docutils
#
# RST2HTML_EXECUTABLE
find_package(PackageHandleStandardArgs)
find_program( RST2HTML_EXECUTABLE
NAMES
rst2html.py
rst2html
DOC
"The Python Docutils reStructuredText HTML converter"
)
if (RST2HTML_EXECUTABLE)
set(DOCUTILS_FOUND "YES")
# Note we only check for a python interpreter and use it for the command
# on Windows. It would be cleaner if we could agree that this is the
# right way to do it for all platforms, or find a way that works for all
# platforms uniformly.
if (WIN32)
find_package(PythonInterp)
if (NOT PYTHON_EXECUTABLE)
message(FATAL_ERROR "Could not find python interpreter, which is required for Docutils")
endif()
execute_process(COMMAND ${PYTHON_EXECUTABLE} ${RST2HTML_EXECUTABLE} --version OUTPUT_VARIABLE VERSION_STRING )
else()
execute_process(COMMAND ${RST2HTML_EXECUTABLE} --version OUTPUT_VARIABLE VERSION_STRING )
endif()
# find the version
# ex : rst2html (Docutils 0.6 [release], Python 2.6.6, on linux2)
string(REGEX MATCHALL "([^\ ]+\ |[^\ ]+$)" VERSION_TOKENS "${VERSION_STRING}")
# isolate the 3rd. word in the string
list (GET VERSION_TOKENS 2 VERSION_STRING)
# remove white space
string(REGEX REPLACE "[ \t]+$" "" VERSION_STRING ${VERSION_STRING})
string(REGEX REPLACE "^[ \t]+" "" VERSION_STRING ${VERSION_STRING})
set(DOCUTILS_VERSION ${VERSION_STRING})
else()
set(DOCUTILS_FOUND "NO")
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Docutils
REQUIRED_VARS
RST2HTML_EXECUTABLE
VERSION_VAR
DOCUTILS_VERSION
)
mark_as_advanced(
RST2HTML_EXECUTABLE
)