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cmake_minimum_required(VERSION 3.5)
project(CxxDialect)
add_executable(use_typeof use_typeof.cxx)
set_property(TARGET use_typeof PROPERTY CXX_STANDARD 98)
add_executable(use_constexpr use_constexpr.cxx)
set_property(TARGET use_constexpr PROPERTY CXX_STANDARD 11)
add_executable(CxxDialect use_constexpr_and_typeof.cxx)
set_property(TARGET CxxDialect PROPERTY CXX_STANDARD 11)
try_compile(typeof_no_extensions_works
"${CMAKE_CURRENT_BINARY_DIR}/use_typeof_test"
"${CMAKE_CURRENT_SOURCE_DIR}/use_typeof.cxx"
COMPILE_DEFINITIONS
CMAKE_FLAGS
"-DCMAKE_CXX_STANDARD=98"
"-DCMAKE_CXX_EXTENSIONS=FALSE"
OUTPUT_VARIABLE OUTPUT
)
if (typeof_no_extensions_works)
message("Use of typeof extension with extensions disabled works, but is expected to fail: ${OUTPUT}")
else()
message("Use of typeof extension with extensions disabled fails, as expected")
endif()
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