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# cmake/modules/xwin.cmake
#
# Copyright (C) 2006 Alan W. Irwin
#
# This file is part of PLplot.
#
# PLplot is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; version 2 of the License.
#
# PLplot 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 Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with the file PLplot; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
# Module for determining all configuration variables related to the xwin
# device driver.
# The following variables are set/modified:
# PLD_xwin - ON means the xwin device is enabled.
# xwin_COMPILE_FLAGS - individual COMPILE_FLAGS required to compile xwin
# device.
# xwin_LINK_FLAGS - individual LINK_FLAGS for dynamic xwin device.
# DRIVERS_LINK_FLAGS - list of LINK_FLAGS for all static devices.
# HAVE_PTHREAD - ON means use pthreads with xwin driver.
# PLPLOT_MUTEX_RECURSIVE - Portable definition for PTHREAD_MUTEX_RECURSIVE
if(PLD_xwin)
if(X11_FOUND)
set(xwin_COMPILE_FLAGS "${X11_COMPILE_FLAGS}")
# N.B. X11_LIBRARY_DIR is used internally by FindX11.cmake but not
# documented for external use so we may have to replace this
# some day by the appropriate
# "GET_FILENAME_COMPONENT(X11_LIBRARY_DIR ??? PATH)" logic.
# But this works for now....
set(xwin_LINK_FLAGS "-L${X11_LIBRARY_DIR} ${X11_LIBRARIES}")
option(HAVE_PTHREAD "Use pthreads with the xwin driver" OFF)
if(HAVE_PTHREAD)
find_package(Threads)
if(CMAKE_USE_PTHREADS_INIT)
set(xwin_LINK_FLAGS ${xwin_LINK_FLAGS} ${CMAKE_THREAD_LIBS_INIT})
if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
set(PLPLOT_MUTEX_RECURSIVE "PTHREAD_MUTEX_RECURSIVE_NP")
else(CMAKE_SYSTEM_NAME STREQUAL "Linux")
set(PLPLOT_MUTEX_RECURSIVE "PTHREAD_MUTEX_RECURSIVE")
endif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
else(CMAKE_USE_PTHREADS_INIT)
# I am being super-careful here to follow the autotools model. In
# fact, it is possible other thread systems will work as well as
# pthreads. So something to investigate for later.
set(HAVE_PTHREAD OFF)
endif(CMAKE_USE_PTHREADS_INIT)
endif(HAVE_PTHREAD)
set(DRIVERS_LINK_FLAGS ${DRIVERS_LINK_FLAGS} ${xwin_LINK_FLAGS})
else(X11_FOUND)
set(PLD_xwin OFF CACHE BOOL "Enable xwin device" FORCE)
endif(X11_FOUND)
endif(PLD_xwin)
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