diff options
Diffstat (limited to 'cmake/CXXFeatureCheck.cmake')
| -rw-r--r-- | cmake/CXXFeatureCheck.cmake | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/cmake/CXXFeatureCheck.cmake b/cmake/CXXFeatureCheck.cmake index 62e6741..e514826 100644 --- a/cmake/CXXFeatureCheck.cmake +++ b/cmake/CXXFeatureCheck.cmake @@ -17,6 +17,8 @@ if(__cxx_feature_check) endif() set(__cxx_feature_check INCLUDED) +option(CXXFEATURECHECK_DEBUG OFF) + function(cxx_feature_check FILE) string(TOLOWER ${FILE} FILE) string(TOUPPER ${FILE} VAR) @@ -27,18 +29,22 @@ function(cxx_feature_check FILE) return() endif() + set(FEATURE_CHECK_CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS}) if (ARGC GREATER 1) message(STATUS "Enabling additional flags: ${ARGV1}") - list(APPEND BENCHMARK_CXX_LINKER_FLAGS ${ARGV1}) + list(APPEND FEATURE_CHECK_CMAKE_FLAGS ${ARGV1}) endif() if (NOT DEFINED COMPILE_${FEATURE}) - message(STATUS "Performing Test ${FEATURE}") if(CMAKE_CROSSCOMPILING) + message(STATUS "Cross-compiling to test ${FEATURE}") try_compile(COMPILE_${FEATURE} ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/${FILE}.cpp - CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS} - LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES}) + CXX_STANDARD 11 + CXX_STANDARD_REQUIRED ON + CMAKE_FLAGS ${FEATURE_CHECK_CMAKE_FLAGS} + LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES} + OUTPUT_VARIABLE COMPILE_OUTPUT_VAR) if(COMPILE_${FEATURE}) message(WARNING "If you see build failures due to cross compilation, try setting HAVE_${VAR} to 0") @@ -47,11 +53,14 @@ function(cxx_feature_check FILE) set(RUN_${FEATURE} 1 CACHE INTERNAL "") endif() else() - message(STATUS "Performing Test ${FEATURE}") + message(STATUS "Compiling and running to test ${FEATURE}") try_run(RUN_${FEATURE} COMPILE_${FEATURE} ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/cmake/${FILE}.cpp - CMAKE_FLAGS ${BENCHMARK_CXX_LINKER_FLAGS} - LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES}) + CXX_STANDARD 11 + CXX_STANDARD_REQUIRED ON + CMAKE_FLAGS ${FEATURE_CHECK_CMAKE_FLAGS} + LINK_LIBRARIES ${BENCHMARK_CXX_LIBRARIES} + COMPILE_OUTPUT_VARIABLE COMPILE_OUTPUT_VAR) endif() endif() @@ -61,7 +70,11 @@ function(cxx_feature_check FILE) add_definitions(-DHAVE_${VAR}) else() if(NOT COMPILE_${FEATURE}) - message(STATUS "Performing Test ${FEATURE} -- failed to compile") + if(CXXFEATURECHECK_DEBUG) + message(STATUS "Performing Test ${FEATURE} -- failed to compile: ${COMPILE_OUTPUT_VAR}") + else() + message(STATUS "Performing Test ${FEATURE} -- failed to compile") + endif() else() message(STATUS "Performing Test ${FEATURE} -- compiled but failed to run") endif() |