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# - Perform a C++ compilation test. The test passes if the given code compiles
# or fails to compile, depending on the second argument given.
#
# CXX_COMPILATION_TEST(<name> <expect_fail> <source>)
# <name> - name of the test & name of the variable to store if the test passes
# <expect_fail> - indicates whether the given C++ code should compile or not
# <source> - source code to try to compile
#
# The following variables may be set before calling this macro to
# modify the way the check is run:
#
# CMAKE_REQUIRED_FLAGS = string of compile command line flags
# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
# CMAKE_REQUIRED_INCLUDES = list of include directories
# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
# Based on CheckCXXSourceCompiles.cmake
#=============================================================================
# Copyright 2005-2009 Kitware, Inc.
# Copyright 2010 Collabora Ltd.
# @author George Kiagiadakis <george.kiagiadakis@collabora.co.uk>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# * Neither the names of Kitware, Inc., the Insight Software Consortium,
# nor the names of their contributors may be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#=============================================================================
set(CXX_COMPILATION_TESTS_SUCCEEDED "")
set(CXX_COMPILATION_TESTS_FAILED "")
macro(cxx_compilation_test _name _expect_fail _source)
if("${_name}" MATCHES "^${_name}$")
if ("${_expect_fail}" STREQUAL "SHOULD_FAIL")
set(${_name}_SHOULD_FAIL 1)
elseif("${_expect_fail}" STREQUAL "SHOULD_COMPILE")
set(${_name}_SHOULD_FAIL 0)
else()
message(FATAL_ERROR "Invalid argument passed to cxx_compilation_test()")
endif()
if(CMAKE_REQUIRED_LIBRARIES)
set(CXX_COMPILATION_TEST_ADD_LIBRARIES
"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
else()
set(CXX_COMPILATION_TEST_ADD_LIBRARIES)
endif()
if(CMAKE_REQUIRED_INCLUDES)
set(CXX_COMPILATION_TEST_ADD_INCLUDES
"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
else()
set(CXX_COMPILATION_TEST_ADD_INCLUDES)
endif()
file(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.cxx" "${_source}\n")
try_compile(${_name}_COMPILES
${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.cxx
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
CMAKE_FLAGS
"${CXX_COMPILATION_TEST_ADD_LIBRARIES}"
"${CXX_COMPILATION_TEST_ADD_INCLUDES}"
OUTPUT_VARIABLE OUTPUT)
if((${_name}_COMPILES AND NOT ${_name}_SHOULD_FAIL) OR (NOT ${_name}_COMPILES AND ${_name}_SHOULD_FAIL))
list(APPEND CXX_COMPILATION_TESTS_SUCCEEDED ${_name})
message("PASS : ${_name}")
file(APPEND ${CMAKE_BINARY_DIR}/CompilationTests.log
"C++ compilation test ${_name} succeded with the following output:\n"
"${OUTPUT}\n"
"Should fail: ${${_name}_SHOULD_FAIL}\n"
"Source file was:\n${_source}\n")
else()
message("FAIL : ${_name}")
list(APPEND CXX_COMPILATION_TESTS_FAILED ${_name})
set(CXX_COMPILATION_TESTS_HAVE_FAILURE 1)
file(APPEND ${CMAKE_BINARY_DIR}/CompilationTests.log
"C++ compilation test ${_name} failed with the following output:\n"
"${OUTPUT}\n"
"Should fail: ${${_name}_SHOULD_FAIL}\n"
"Source file was:\n${_source}\n")
endif()
endif()
endmacro()
macro(evaluate_cxx_compilation_test_results)
list(LENGTH CXX_COMPILATION_TESTS_SUCCEEDED CXX_COMPILATION_TESTS_SUCCEEDED_COUNT)
list(LENGTH CXX_COMPILATION_TESTS_FAILED CXX_COMPILATION_TESTS_FAILED_COUNT)
message("Totals: ${CXX_COMPILATION_TESTS_SUCCEEDED_COUNT} passed, ${CXX_COMPILATION_TESTS_FAILED_COUNT} failed")
if (CXX_COMPILATION_TESTS_FAILED_COUNT GREATER 0)
message(SEND_ERROR "Some tests have failed")
endif()
endmacro()
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