kwin/cmake/modules/Findhwdata.cmake

# - Try to find hwdata
# Once done this will define
#
#  hwdata_DIR         - The hwdata directory
#  hwdata_PNPIDS_FILE - File with mapping of hw vendor IDs to names
#  hwdata_FOUND       - The hwdata directory exists and contains pnp.ids file

# Copyright (c) 2020  Daniel Vrátil <dvratil@kde.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. Neither the name of the University nor the names of its contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.

if (UNIX AND NOT APPLE)
    find_path(hwdata_DIR NAMES hwdata/pnp.ids HINTS /usr/share ENV XDG_DATA_DIRS)
    find_file(hwdata_PNPIDS_FILE NAMES hwdata/pnp.ids HINTS /usr/share)
    if (NOT hwdata_DIR OR NOT hwdata_PNPIDS_FILE)
        set(hwdata_FOUND FALSE)
    else()
        set(hwdata_FOUND TRUE)
    endif()

    include(FindPackageHandleStandardArgs)
    find_package_handle_standard_args(hwdata DEFAULT_MSG hwdata_FOUND hwdata_DIR hwdata_PNPIDS_FILE)

    mark_as_advanced(hwdata_FOUND hwdata_DIR hwdata_PNPIDS_FILE)
endif()