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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file LICENSE.rst or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindHTMLHelp
------------
Finds the Microsoft HTML Help Compiler and its API which is part of the HTML
Help Workshop:
.. code-block:: cmake
find_package(HTMLHelp [...])
.. note::
HTML Help Workshop is in maintenance mode only and is considered deprecated.
For modern documentation, consider alternatives such as Microsoft Help Viewer
for producing ``.mshc`` files or web-based documentation tools.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``HTMLHelp_FOUND``
.. versionadded:: 4.2
Boolean indicating whether HTML Help was found.
Cache Variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``HTML_HELP_COMPILER``
Full path to the HTML Help Compiler (``hhc.exe``), used to compile ``.chm``
files.
``HTML_HELP_INCLUDE_PATH``
Directory containing ``htmlhelp.h``, required for applications integrating the
HTML Help API.
``HTML_HELP_LIBRARY``
Full path to ``htmlhelp.lib`` library, required for linking applications that
use the HTML Help API.
Examples
^^^^^^^^
Finding HTML Help Compiler:
.. code-block:: cmake
find_package(HTMLHelp)
message(STATUS "HTML Help Compiler found at: ${HTML_HELP_COMPILER}")
#]=======================================================================]
if(WIN32)
find_program(HTML_HELP_COMPILER
NAMES hhc
PATHS
"[HKEY_CURRENT_USER\\Software\\Microsoft\\HTML Help Workshop;InstallDir]"
PATH_SUFFIXES "HTML Help Workshop"
)
get_filename_component(HTML_HELP_COMPILER_PATH "${HTML_HELP_COMPILER}" PATH)
find_path(HTML_HELP_INCLUDE_PATH
NAMES htmlhelp.h
PATHS
"${HTML_HELP_COMPILER_PATH}/include"
"[HKEY_CURRENT_USER\\Software\\Microsoft\\HTML Help Workshop;InstallDir]/include"
PATH_SUFFIXES "HTML Help Workshop/include"
)
find_library(HTML_HELP_LIBRARY
NAMES htmlhelp
PATHS
"${HTML_HELP_COMPILER_PATH}/lib"
"[HKEY_CURRENT_USER\\Software\\Microsoft\\HTML Help Workshop;InstallDir]/lib"
PATH_SUFFIXES "HTML Help Workshop/lib"
)
mark_as_advanced(
HTML_HELP_COMPILER
HTML_HELP_INCLUDE_PATH
HTML_HELP_LIBRARY
)
endif()
if(HTML_HELP_COMPILER AND HTML_HELP_INCLUDE_PATH AND HTML_HELP_LIBRARY)
set(HTMLHelp_FOUND TRUE)
else()
set(HTMLHelp_FOUND FALSE)
endif()
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