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explicit fs tests, no c++ separate test

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This commit is contained in:
qPCR4vir 2019-12-08 18:32:47 +01:00
parent 538c91ebcf
commit f0fa70d51c
2 changed files with 93 additions and 63 deletions
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1
CMakeLists.txt
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@ -32,6 +32,7 @@ project(nana VERSION 1.7.2
add_library(nana)
add_library(nana::nana ALIAS nana)
target_compile_features(nana PUBLIC cxx_std_17)
# set(CMAKE_CXX_STANDARD 17)
# need after cxx_std_14 or cxx_std_17 ??
target_compile_features(nana

155
build/cmake/select_filesystem.cmake
View File

@ -55,8 +55,6 @@ else()
endif()
check_include_file_cxx (filesystem NANA_HAVE_FILESYSTEM)
check_include_file_cxx (experimental/filesystem NANA_HAVE_EXP_FILESYSTEM)
if (NANA_HAVE_FILESYSTEM)
message (STATUS "C++ Filesystem header: <filesystem>")
set (TEST_FS_LIB ON)
@ -67,21 +65,24 @@ else()
std::filesystem::path p{\"\tmp/\"};
throw std::filesystem::filesystem_error(\"Empty file name!\", std::make_error_code(std::errc::invalid_argument));
}")
elseif (NANA_HAVE_EXP_FILESYSTEM)
message (STATUS "C++ Filesystem header: <experimental/filesystem>")
set (TEST_FS_LIB ON)
set (CXXSTD_FS_TEST_SOURCE
"#include <experimental/filesystem>
int main()
{
std::experimental::filesystem::path p{\"/tmp/\"};
throw std::experimental::filesystem::filesystem_error(\"Empty file name!\", std::make_error_code(std::errc::invalid_argument));
}")
else ()
message (WARNING "No std::filesystem include file found: nana::filesystem will be used.
Set NANA_CMAKE_NANA_FILESYSTEM_FORCE to ON to avoid this warning.")
target_compile_definitions(nana PUBLIC STD_FILESYSTEM_NOT_SUPPORTED)
set (TEST_FS_LIB OFF)
else()
check_include_file_cxx (experimental/filesystem NANA_HAVE_EXP_FILESYSTEM)
if (NANA_HAVE_EXP_FILESYSTEM)
message (STATUS "C++ Filesystem header: <experimental/filesystem>")
set (TEST_FS_LIB ON)
set (CXXSTD_FS_TEST_SOURCE
"#include <experimental/filesystem>
int main()
{
std::experimental::filesystem::path p{\"/tmp/\"};
throw std::experimental::filesystem::filesystem_error(\"Empty file name!\", std::make_error_code(std::errc::invalid_argument));
}")
else ()
message (WARNING "No std::filesystem include file found: nana::filesystem will be used.
Set NANA_CMAKE_NANA_FILESYSTEM_FORCE to ON to avoid this warning.")
target_compile_definitions(nana PUBLIC STD_FILESYSTEM_NOT_SUPPORTED)
set (TEST_FS_LIB OFF)
endif ()
endif ()
if (TEST_FS_LIB)
@ -94,56 +95,84 @@ else()
set (CMAKE_REQUIRED_INCLUDES ${CMAKE_INCLUDE_PATH})
set (CMAKE_REQUIRED_FLAGS ${CMAKE_CXX_FLAGS})
set (CMAKE_REQUIRED_FLAGS_ORIGINAL ${CMAKE_REQUIRED_FLAGS})
set (CXXSTD_TEST_SOURCE
"#if !defined (__cplusplus) || (__cplusplus < 201703L)
#error NOCXX17
#endif
int main() {}")
check_cxx_source_compiles ("${CXXSTD_TEST_SOURCE}" CXX17_BUILTIN)
if (CXX17_BUILTIN)
message (STATUS "C++ Standard-17 support: builtin")
else ()
set (CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS_ORIGINAL} -std=c++17")
check_cxx_source_compiles ("${CXXSTD_TEST_SOURCE}" CXX17_FLAG)
if (CXX17_FLAG)
message (STATUS "C++ Standard-17 support: via -std=c++17")
else ()
message (WARNING "nana requires C++17??, but your compiler does not support it.")
endif ()
endif ()
set (CMAKE_REQUIRED_LIBRARIES_ORIGINAL ${CMAKE_REQUIRED_LIBRARIES})
check_cxx_source_compiles ("${CXXSTD_TEST_SOURCE}" C++17FS_FLAG)
if (C++17FS_FLAG)
# c++: builtin
set (CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS_ORIGINAL}")
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_ORIGINAL})
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" CXXBuiltIn_FS_BuiltIn)
if (CXXBuiltIn_FS_BuiltIn)
message (STATUS "C++ Filesystem library: builtin")
else ()
set (C++17FS_LIB "")
foreach (_LIB stdc++fs)
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_ORIGINAL} ${_LIB})
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" C++17FS_LIB-l${_LIB})
message (STATUS "C++ Filesystem library: testing -l${_LIB}")
if (C++17FS_LIB-l${_LIB})
target_link_libraries (nana PUBLIC ${_LIB})
message (STATUS "C++ Filesystem library: via -l${_LIB}")
set (C++17FS_LIB ${_LIB})
break ()
endif ()
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_ORIGINAL})
endforeach ()
else()
set (CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES_ORIGINAL} stdc++fs")
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" CXXBuiltIn_FS_stdcppfs)
if (CXXBuiltIn_FS_stdcppfs)
message (STATUS "C++ Filesystem library: stdc++fs")
target_link_libraries (nana PUBLIC stdc++fs)
else()
set (CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES_ORIGINAL} c++fs")
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" CXXBuiltIn_FS_cppfs)
if (CXXBuiltIn_FS_cppfs)
message (STATUS "C++ Filesystem library: c++fs")
target_link_libraries (nana PUBLIC c++fs)
else()
if (C++17FS_LIB)
message (STATUS "C++ Filesystem library: via -l${C++17FS_LIB}")
else ()
message (WARNING "No std::filesystem library found: nana::filesystem will be used.
Set NANA_CMAKE_NANA_FILESYSTEM_FORCE to ON to avoid this warning.")
target_compile_definitions(nana PUBLIC STD_FILESYSTEM_NOT_SUPPORTED)
endif ()
# c++: -std=c++17
set (CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS_ORIGINAL} -std=c++17")
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_ORIGINAL})
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" CXX_std__cpp17_FS_BuiltIn)
if (CXX_std__cpp17_FS_BuiltIn)
message (STATUS "C++: -std=c++17; Filesystem library: builtin")
else()
set (CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES_ORIGINAL} stdc++fs")
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" CXX_std__cpp17_FS_stdcppfs)
if (CXX_std__cpp17_FS_stdcppfs)
message (STATUS "C++: -std=c++17; Filesystem library: stdc++fs")
target_link_libraries (nana PUBLIC stdc++fs)
else()
set (CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES_ORIGINAL} c++fs")
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" CXX_std__cpp17_FS_cppfs)
if (CXX_std__cpp17_FS_cppfs)
message (STATUS "C++: -std=c++17; Filesystem library: c++fs")
target_link_libraries (nana PUBLIC c++fs)
else()
# c++: /std:c++17
set (CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS_ORIGINAL} /std:c++17")
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_ORIGINAL})
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" CXX_std_cpp17_FS_BuiltIn)
if (CXX_std_cpp17_FS_BuiltIn)
message (STATUS "C++: /std:c++17; Filesystem library: builtin")
else()
set (CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES_ORIGINAL} stdc++fs")
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" CXX_std_cpp17_FS_stdcppfs)
if (CXX_std_cpp17_FS_stdcppfs)
message (STATUS "C++: /std:c++17; Filesystem library: stdc++fs")
target_link_libraries (nana PUBLIC stdc++fs)
else()
set (CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES_ORIGINAL} c++fs")
check_cxx_source_compiles ("${CXXSTD_FS_TEST_SOURCE}" CXX_std_cpp17_FS_cppfs)
if (CXX_std_cpp17_FS_cppfs)
message (STATUS "C++: /std:c++17; Filesystem library: c++fs")
target_link_libraries (nana PUBLIC c++fs)
else ()
message (WARNING "No std::filesystem library found: nana::filesystem will be used.
Set NANA_CMAKE_NANA_FILESYSTEM_FORCE to ON to avoid this warning.")
target_compile_definitions(nana PUBLIC STD_FILESYSTEM_NOT_SUPPORTED)
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES_ORIGINAL})
endif ()
endif ()
endif()
endif ()
endif ()
endif ()
endif ()
endif ()
endif ()
endif ()
endif ()
endif (TEST_FS_LIB)
endif ()