FindSocket.cmake

# You may redistribute this program and/or modify it under the terms of
# the GNU General Public License as published by the Free Software Foundation,
# either version 3 of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This is for finding berkley socket functions
# it specifically looks for socket()

# brought from: https://raw.github.com/cjdelisle/cjdns/master/cmake/modules/FindSocket.cmake

include(CheckFunctionExists)

if(NOT SOCKET_FOUND AND NOT NO_SOCKET)
	check_function_exists(socket LIZARDFS_HAVE_SOCKET)
	if(LIZARDFS_HAVE_SOCKET)
		set(SOCKET_FOUND TRUE)
		set(SOCKET_LIBRARIES "")
	else()
		message("socket() not found, searching for library")
	endif()

	# mingw32 uses ws2_32
	# illumos uses socket
	if(NOT SOCKET_FOUND)
		find_library(SOCKET_LIBRARIES
			NAMES
			ws2_32
			socket
			PATHS
			${SOCKET_PREFIX}/
			/lib/
			)

		if(SOCKET_LIBRARIES)
			message("Socket library was found at [${SOCKET_LIBRARIES}]")
			set(SOCKET_FOUND TRUE)
			set(LIZARDFS_HAVE_SOCKET)
		elseif(Socket_FIND_REQUIRED)
			message(FATAL_ERROR "Could not find socket library, try to setup SOCKET_PREFIX accordingly")
		else()
			message("Could not find socket library, skipping because Socket_FIND_REQUIRED is not set")
		endif()
	endif()
endif()