FindLibcheck.cmake

# Copyright 2019-2021 Collabora, Ltd.
#
# SPDX-License-Identifier: BSL-1.0
#
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
#
# Original Author:
# 2019-2021 Ryan Pavlik <ryan.pavlik@collabora.com>

#.rst:
# FindCheck
# ---------------
#
# Find the "Check" C unit testing framework.
#
# See https://libcheck.github.io
#
# The Debian package for this is called ``check``
#
# Targets
# ^^^^^^^
#
# If successful, the following imported targets are created.
#
# ``libcheck::check``
#
# Cache variables
# ^^^^^^^^^^^^^^^
#
# The following cache variable may also be set to assist/control the operation of this module:
#
# ``LIBCHECK_ROOT_DIR``
#  The root to search for libcheck.

set(LIBCHECK_ROOT_DIR
    "${LIBCHECK_ROOT_DIR}"
    CACHE PATH "Root to search for libcheck")

if(NOT ANDROID)
    find_package(PkgConfig QUIET)
    if(PKG_CONFIG_FOUND)
        set(_old_prefix_path "${CMAKE_PREFIX_PATH}")
        # So pkg-config uses LIBCHECK_ROOT_DIR too.
        if(LIBCHECK_ROOT_DIR)
            list(APPEND CMAKE_PREFIX_PATH ${LIBCHECK_ROOT_DIR})
        endif()
        pkg_check_modules(PC_LIBCHECK QUIET check)
        # Restore
        set(CMAKE_PREFIX_PATH "${_old_prefix_path}")
    endif()
endif()

find_path(
    LIBCHECK_INCLUDE_DIR
    NAMES check.h
    PATHS ${LIBCHECK_ROOT_DIR}
    HINTS ${PC_LIBCHECK_INCLUDE_DIRS}
    PATH_SUFFIXES include)
find_library(
    LIBCHECK_LIBRARY
    NAMES check_pic check
    PATHS ${LIBCHECK_ROOT_DIR}
    HINTS ${PC_LIBCHECK_LIBRARY_DIRS}
    PATH_SUFFIXES lib)
find_library(
    LIBCHECK_SUBUNIT_LIBRARY
    NAMES subunit
    PATHS ${LIBCHECK_ROOT_DIR}
    HINTS ${PC_LIBCHECK_LIBRARY_DIRS}
    PATH_SUFFIXES lib)
find_library(LIBCHECK_LIBRT rt)
find_library(LIBCHECK_LIBM m)

find_package(Threads QUIET)

set(_libcheck_extra_required)
if(PC_LIBCHECK_FOUND AND "${PC_LIBCHECK_LIBRARIES}" MATCHES "subunit")
    list(APPEND _libcheck_extra_required LIBCHECK_SUBUNIT_LIBRARY)
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
    Libcheck REQUIRED_VARS LIBCHECK_INCLUDE_DIR LIBCHECK_LIBRARY THREADS_FOUND)
if(LIBCHECK_FOUND)
    if(NOT TARGET libcheck::check)
        add_library(libcheck::check UNKNOWN IMPORTED)

        set_target_properties(
            libcheck::check
            PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${LIBCHECK_INCLUDE_DIR}"
                       IMPORTED_LINK_INTERFACE_LANGUAGES "C"
                       IMPORTED_LOCATION ${LIBCHECK_LIBRARY}
                       IMPORTED_LINK_INTERFACE_LIBRARIES Threads::Threads)

        # if we found librt or libm, link them.
        if(LIBCHECK_LIBRT)
            set_property(
                TARGET libcheck::check
                APPEND
                PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES "${LIBCHECK_LIBRT}")
        endif()
        if(LIBCHECK_LIBM)
            set_property(
                TARGET libcheck::check
                APPEND
                PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES "${LIBCHECK_LIBM}")
        endif()
        if(LIBCHECK_SUBUNIT_LIBRARY)
            set_property(
                TARGET libcheck::check
                APPEND
                PROPERTY IMPORTED_LINK_INTERFACE_LIBRARIES
                         "${LIBCHECK_SUBUNIT_LIBRARY}")
        endif()

    endif()
    mark_as_advanced(LIBCHECK_INCLUDE_DIR LIBCHECK_LIBRARY
                     LIBCHECK_SUBUNIT_LIBRARY)
endif()
mark_as_advanced(LIBCHECK_ROOT_DIR LIBCHECK_LIBRT LIBCHECK_LIBM)