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# cmake/modules/cxx.cmake
#
# C++ binding configuration
#
# Copyright (C) 2006 Andrew Ross
#
# 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 C++ binding configuration options
# Option to enable C++ binding
if(DEFAULT_NO_BINDINGS)
OPTION(ENABLE_cxx "Enable C++ binding" OFF)
else(DEFAULT_NO_BINDINGS)
OPTION(ENABLE_cxx "Enable C++ binding" ON)
endif(DEFAULT_NO_BINDINGS)
if(NOT PLPLOT_CXX_COMPILER_WORKS)
workaround_9220(CXX PLPLOT_CXX_COMPILER_WORKS)
if(NOT PLPLOT_CXX_COMPILER_WORKS)
message(STATUS "WARNING: no working C++ compiler so disabling C++ binding and examples.")
set(ENABLE_cxx OFF CACHE BOOL "Enable C++ binding" FORCE)
endif(NOT PLPLOT_CXX_COMPILER_WORKS)
endif(NOT PLPLOT_CXX_COMPILER_WORKS)
if(PLPLOT_CXX_COMPILER_WORKS)
# Find and check C++ compiler.
enable_language(CXX OPTIONAL)
if(NOT CMAKE_CXX_COMPILER_WORKS)
message(STATUS "No working C++ compiler found so disabling C++ binding and examples.")
set(ENABLE_cxx OFF CACHE BOOL "Enable C++ binding" FORCE)
endif(NOT CMAKE_CXX_COMPILER_WORKS)
endif(PLPLOT_CXX_COMPILER_WORKS)
if(CMAKE_CXX_COMPILER_WORKS)
# Check if "using namespace std;" works
INCLUDE(TestForNamespace)
# Check for <cmath>
INCLUDE(CheckIncludeFileCXX)
CHECK_INCLUDE_FILE_CXX(cmath HAVE_CMATH)
if(NOT MSVC)
# Need to add check for broken cmath with isnan missing (PL_BROKEN_ISNAN_CXX)
# but not for Visual C++ compilers
include(TestBrokenIsnanCXX)
endif(NOT MSVC)
# Need to add check if stdint.h can be used from c++ (PL_HAVE_CXX_STDINT_H)
INCLUDE(TestForStdintCXX)
endif(CMAKE_CXX_COMPILER_WORKS)
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