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| author | Hong Xu <hong@topbug.net> | 2019-07-07 22:47:06 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2019-07-26 19:09:28 (GMT) |
| commit | 72fcadb007261f8e1883040d7dc5643e3555aa45 (patch) | |
| tree | 0a7f2ab77a257930351375e04a61223149f74bdc /Tests/CMakeOnly | |
| parent | 93f10f06b3b86085a180e5259f653646e1705baf (diff) | |
| download | CMake-72fcadb007261f8e1883040d7dc5643e3555aa45.zip CMake-72fcadb007261f8e1883040d7dc5643e3555aa45.tar.gz CMake-72fcadb007261f8e1883040d7dc5643e3555aa45.tar.bz2 | |
CheckCXXSymbolExists: Make C++-syntax symbols work on more compilers
On some compilers the syntax `#ifndef std::fopen` will always lead to
compilation error. Avoid generating it in the check.
Diffstat (limited to 'Tests/CMakeOnly')
| -rw-r--r-- | Tests/CMakeOnly/CheckCXXSymbolExists/CMakeLists.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Tests/CMakeOnly/CheckCXXSymbolExists/CMakeLists.txt b/Tests/CMakeOnly/CheckCXXSymbolExists/CMakeLists.txt index f058c19..2028a13 100644 --- a/Tests/CMakeOnly/CheckCXXSymbolExists/CMakeLists.txt +++ b/Tests/CMakeOnly/CheckCXXSymbolExists/CMakeLists.txt @@ -49,6 +49,15 @@ else () message(STATUS "errno found in <cerrno>") endif () +check_cxx_symbol_exists("std::fopen" "cstdio" CSE_RESULT_FOPEN) +if (NOT CSE_RESULT_FOPEN) + if(NOT ("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xMSVC" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 13.10)) + message(SEND_ERROR "CheckCXXSymbolExists did not find std::fopen in <cstdio>") + endif() +else() + message(STATUS "std::fopen found in <cstdio>") +endif() + if (CMAKE_COMPILER_IS_GNUCXX) string(APPEND CMAKE_CXX_FLAGS " -O3") unset(CSE_RESULT_O3 CACHE) @@ -60,3 +69,8 @@ if (CMAKE_COMPILER_IS_GNUCXX) message(SEND_ERROR "CheckCXXSymbolExists reported a nonexistent symbol as existing with optimization -O3") endif () endif () + +check_cxx_symbol_exists("std::non_existent_function_for_symbol_test<int*>" "algorithm" CSE_RESULT_NON_SYMBOL) +if (CSE_RESULT_NON_SYMBOL) + message(SEND_ERROR "CheckCXXSymbolExists reported a nonexistent symbol.") +endif() |