| #******************************************************************************** |
| # Copyright (c) 2020 TU Wien/ACIN, OFFIS e.V. |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # http://www.eclipse.org/legal/epl-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 |
| # |
| # Contributors: |
| # Martin Melik Merkumians |
| # - initial API and implementation and/or initial documentation |
| # Jörg Walter - fix detection to honor C++ standard settings |
| # *******************************************************************************/ |
| cmake_policy(PUSH) |
| cmake_policy(SET CMP0067 NEW) |
| |
| include(CheckCXXSourceCompiles) |
| |
| function(TEST_NEEDED_FORTE_COMPILER_FEATURES) |
| check_cxx_source_compiles("int main() { void* p = nullptr; }" |
| NULLPTR_SUPPORTED |
| FAIL_REGEX "use of undeclared identifier 'nullptr'") |
| if(NOT NULLPTR_SUPPORTED) |
| message(WARNING "`nullptr` not supported, replacing it with 0 via precprocessor") |
| forte_add_definition("-Dnullptr=0") |
| endif() |
| |
| if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" AND |
| CMAKE_CXX_COMPILER_VERSION VERSION_LESS 11.3) |
| # gcc < 11.3 has a bug in the handling of std::variant and std::visit, |
| # incompatible with the current implementation of forte |
| message(FATAL_ERROR "At least GCC version 11.3 required!") |
| endif() |
| endfunction() |
| |
| cmake_policy(POP) |
