******************************************************************************** conan test conan-center-index/recipes/tomlplusplus/all/test_package/conanfile.py tomlplusplus/2.5.0@ --profile=/home/conan/w/BuildSingleReference/51843/6b941c03-0a30-47cc-bbcf-baff67ed8f38/profile.txt ******************************************************************************** Auto detecting your dev setup to initialize the default profile (/home/conan/w/BuildSingleReference/.conan/profiles/default) CC and CXX: clang, clang++ Found clang 10.0 clang>=8, using the major as version Default settings os=Linux os_build=Linux arch=x86_64 arch_build=x86_64 compiler=clang compiler.version=10 compiler.libcxx=libstdc++ build_type=Release *** You can change them in /home/conan/w/BuildSingleReference/.conan/profiles/default *** *** Or override with -s compiler='other' -s ...s*** Configuration: [settings] arch=x86_64 build_type=Release compiler=clang compiler.libcxx=libstdc++ compiler.version=10 os=Linux [options] [build_requires] [env] tomlplusplus/2.5.0 (test package): Installing package Requirements tomlplusplus/2.5.0 from local cache - Cache Packages tomlplusplus/2.5.0:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Download Installing (downloading, building) binaries... tomlplusplus/2.5.0: Retrieving package 5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 from remote 'c3i_PR-7350' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz tomlplusplus/2.5.0: Package installed 5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 tomlplusplus/2.5.0: Downloaded package revision d0fa74f277ae2785016cc441418ad043 [HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK [HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK tomlplusplus/2.5.0 (test package): Generator txt created conanbuildinfo.txt tomlplusplus/2.5.0 (test package): Generator cmake created conanbuildinfo.cmake tomlplusplus/2.5.0 (test package): Aggregating env generators tomlplusplus/2.5.0 (test package): Generated conaninfo.txt tomlplusplus/2.5.0 (test package): Generated graphinfo Using lockfile: '/home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/build/1dd1761c1e2948d56b55443f1683af533b2c533d/conan.lock' Using cached profile from lockfile [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not found [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK tomlplusplus/2.5.0 (test package): Calling build() ----Running------ > cd '/home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/build/1dd1761c1e2948d56b55443f1683af533b2c533d' && cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE="Release" -DCONAN_IN_LOCAL_CACHE="OFF" -DCONAN_COMPILER="clang" -DCONAN_COMPILER_VERSION="10" -DCONAN_CXX_FLAGS="-m64" -DCONAN_SHARED_LINKER_FLAGS="-m64" -DCONAN_C_FLAGS="-m64" -DCONAN_LIBCXX="libstdc++" -DCMAKE_INSTALL_PREFIX="/home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/build/1dd1761c1e2948d56b55443f1683af533b2c533d/package" -DCMAKE_INSTALL_BINDIR="bin" -DCMAKE_INSTALL_SBINDIR="bin" -DCMAKE_INSTALL_LIBEXECDIR="bin" -DCMAKE_INSTALL_LIBDIR="lib" -DCMAKE_INSTALL_INCLUDEDIR="include" -DCMAKE_INSTALL_OLDINCLUDEDIR="include" -DCMAKE_INSTALL_DATAROOTDIR="share" -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY="ON" -DCONAN_EXPORTED="1" -Wno-dev '/home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package' ----------------- -- The C compiler identification is Clang 10.0.1 -- The CXX compiler identification is Clang 10.0.1 -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working C compiler: /usr/bin/clang - skipped -- Detecting C compile features -- Detecting C compile features - done -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Check for working CXX compiler: /usr/bin/clang++ - skipped -- Detecting CXX compile features -- Detecting CXX compile features - done -- Conan: called by CMake conan helper -- Conan: Adjusting output directories -- Conan: Using cmake global configuration -- Conan: Adjusting default RPATHs Conan policies -- Conan: Adjusting language standard -- Conan: Compiler Clang>=8, checking major version 10 -- Conan: Checking correct version: 10 -- Conan: C++ stdlib: libstdc++ -- Configuring done -- Generating done -- Build files have been written to: /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/build/1dd1761c1e2948d56b55443f1683af533b2c533d ----Running------ > cmake --build '/home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/build/1dd1761c1e2948d56b55443f1683af533b2c533d' '--' '-j3' ----------------- Scanning dependencies of target test_package Scanning dependencies of target test_package_multi [ 25%] Building CXX object CMakeFiles/test_package.dir/test_package.cpp.o [ 50%] Building CXX object CMakeFiles/test_package_multi.dir/test_package_multi.cpp.o CMakeFiles/test_package_multi.dir/build.make:81: recipe for target 'CMakeFiles/test_package_multi.dir/test_package_multi.cpp.o' failed CMakeFiles/Makefile2:96: recipe for target 'CMakeFiles/test_package_multi.dir/all' failed [ 75%] Linking CXX executable bin/test_package [ 75%] Built target test_package Makefile:102: recipe for target 'all' failed CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY CMAKE_INSTALL_BINDIR CMAKE_INSTALL_DATAROOTDIR CMAKE_INSTALL_INCLUDEDIR CMAKE_INSTALL_LIBDIR CMAKE_INSTALL_LIBEXECDIR CMAKE_INSTALL_OLDINCLUDEDIR CMAKE_INSTALL_SBINDIR In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:13: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:438:3: error: toml++ requires C++17 or higher. For a TOML library supporting C++11 see https://github.com/ToruNiina/toml11 #error toml++ requires C++17 or higher. For a TOML library supporting C++11 see https://github.com/ToruNiina/toml11 ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:768:1: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_DISABLE_WARNINGS; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:95:3: note: expanded from macro 'TOML_DISABLE_WARNINGS' TOML_PUSH_WARNINGS; \ ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:63:21: note: expanded from macro 'TOML_PUSH_WARNINGS' static_assert(true) ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:779:1: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_ENABLE_WARNINGS; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:99:34: note: expanded from macro 'TOML_ENABLE_WARNINGS' #define TOML_ENABLE_WARNINGS TOML_POP_WARNINGS ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:92:21: note: expanded from macro 'TOML_POP_WARNINGS' static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:15:1: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_PUSH_WARNINGS; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:63:21: note: expanded from macro 'TOML_PUSH_WARNINGS' static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:16:1: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_DISABLE_SPAM_WARNINGS; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:88:21: note: expanded from macro 'TOML_DISABLE_SPAM_WARNINGS' static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:13:1: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_DISABLE_WARNINGS; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:95:3: note: expanded from macro 'TOML_DISABLE_WARNINGS' TOML_PUSH_WARNINGS; \ ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:63:21: note: expanded from macro 'TOML_PUSH_WARNINGS' static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:31:1: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_ENABLE_WARNINGS; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:99:34: note: expanded from macro 'TOML_ENABLE_WARNINGS' #define TOML_ENABLE_WARNINGS TOML_POP_WARNINGS ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:92:21: note: expanded from macro 'TOML_POP_WARNINGS' static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:81:23: error: no namespace named 'string_view_literals' in namespace 'std'; did you mean 'string_literals'? using namespace std::string_view_literals; ~~~~~^~~~~~~~~~~~~~~~~~~~ string_literals /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/bits/basic_string.h:6668:20: note: namespace 'string_literals' defined here inline namespace string_literals ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:101:27: error: no type named 'string_view' in namespace 'std' using string_view = std::string_view; ~~~~~^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:110:2: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_ABI_NAMESPACE_BOOL(TOML_HAS_CUSTOM_OPTIONAL_TYPE, custopt, stdopt); ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:736:46: note: expanded from macro 'TOML_ABI_NAMESPACE_BOOL' #define TOML_ABI_NAMESPACE_BOOL(cond, T, F) TOML_ABI_NAMESPACE_START(TOML_CONCAT(TOML_EVAL_BOOL_, cond)(T, F)) ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:735:84: note: expanded from macro 'TOML_ABI_NAMESPACE_START' #define TOML_ABI_NAMESPACE_START(name) inline namespace name { static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:112:2: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_ABI_NAMESPACE_END; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:737:56: note: expanded from macro 'TOML_ABI_NAMESPACE_END' #define TOML_ABI_NAMESPACE_END } static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:145:2: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_ABI_NAMESPACE_BOOL(TOML_EXCEPTIONS, ex, noex); ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:736:46: note: expanded from macro 'TOML_ABI_NAMESPACE_BOOL' #define TOML_ABI_NAMESPACE_BOOL(cond, T, F) TOML_ABI_NAMESPACE_START(TOML_CONCAT(TOML_EVAL_BOOL_, cond)(T, F)) ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:735:84: note: expanded from macro 'TOML_ABI_NAMESPACE_START' #define TOML_ABI_NAMESPACE_START(name) inline namespace name { static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:151:2: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_ABI_NAMESPACE_END; // TOML_EXCEPTIONS ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:737:56: note: expanded from macro 'TOML_ABI_NAMESPACE_END' #define TOML_ABI_NAMESPACE_END } static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:162:3: warning: inline variables are a C++17 extension [-Wc++17-extensions] inline constexpr bool is_one_of = (false || ... || std::is_same_v); ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:162:59: error: no template named 'is_same_v' in namespace 'std'; did you mean 'is_same'? inline constexpr bool is_one_of = (false || ... || std::is_same_v); ~~~~~^~~~~~~~~ is_same /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/type_traits:1503:12: note: 'is_same' declared here struct is_same ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:162:74: error: expected '(' for function-style cast or type construction inline constexpr bool is_one_of = (false || ... || std::is_same_v); ~~~~~~~~~~~~~~~~~~~~^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:165:3: warning: inline variables are a C++17 extension [-Wc++17-extensions] inline constexpr bool is_cvref = std::is_reference_v || std::is_const_v || std::is_volatile_v; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:165:41: error: no template named 'is_reference_v' in namespace 'std'; did you mean 'is_reference'? inline constexpr bool is_cvref = std::is_reference_v || std::is_const_v || std::is_volatile_v; ~~~~~^~~~~~~~~~~~~~ is_reference /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/type_traits:580:12: note: 'is_reference' declared here struct is_reference ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:165:59: error: expected '(' for function-style cast or type construction inline constexpr bool is_cvref = std::is_reference_v || std::is_const_v || std::is_volatile_v; ~~~~~~~~~~~~~~~~~~~~~~ ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:165:67: error: no template named 'is_const_v' in namespace 'std'; did you mean 'is_const'? inline constexpr bool is_cvref = std::is_reference_v || std::is_const_v || std::is_volatile_v; ~~~~~^~~~~~~~~~ is_const /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/type_traits:655:12: note: 'is_const' declared here struct is_const ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:165:81: error: expected '(' for function-style cast or type construction inline constexpr bool is_cvref = std::is_reference_v || std::is_const_v || std::is_volatile_v; ~~~~~~~~~~~~~~~~~~ ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:165:89: error: no template named 'is_volatile_v' in namespace 'std'; did you mean 'is_volatile'? inline constexpr bool is_cvref = std::is_reference_v || std::is_const_v || std::is_volatile_v; ~~~~~^~~~~~~~~~~~~ is_volatile /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/type_traits:664:12: note: 'is_volatile' declared here struct is_volatile ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:165:105: error: expected '(' for function-style cast or type construction inline constexpr bool is_cvref = std::is_reference_v || std::is_const_v || std::is_volatile_v; ~~~~~~~~~~~~~~~~~~~~~^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:168:3: warning: inline variables are a C++17 extension [-Wc++17-extensions] inline constexpr bool is_wide_string = is_one_of< ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:172:9: error: no member named 'wstring_view' in namespace 'std' std::wstring_view, ~~~~~^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:177:3: warning: inline variables are a C++17 extension [-Wc++17-extensions] inline constexpr bool dependent_false = false; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:187:3: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_ABI_NAMESPACE_BOOL(TOML_EXCEPTIONS, ex, noex); ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:736:46: note: expanded from macro 'TOML_ABI_NAMESPACE_BOOL' #define TOML_ABI_NAMESPACE_BOOL(cond, T, F) TOML_ABI_NAMESPACE_START(TOML_CONCAT(TOML_EVAL_BOOL_, cond)(T, F)) ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:735:84: note: expanded from macro 'TOML_ABI_NAMESPACE_START' #define TOML_ABI_NAMESPACE_START(name) inline namespace name { static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:189:3: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_ABI_NAMESPACE_END; // TOML_EXCEPTIONS ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:737:56: note: expanded from macro 'TOML_ABI_NAMESPACE_END' #define TOML_ABI_NAMESPACE_END } static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:202:1: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_NAMESPACE_END; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:733:53: note: expanded from macro 'TOML_NAMESPACE_END' #define TOML_NAMESPACE_END } static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:244:24: error: no template named 'optional' in namespace 'std' using optional = std::optional; ~~~~~^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:286:24: error: C++ requires a type specifier for all declarations template inserter(T&&) -> inserter; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:288:1: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] TOML_NAMESPACE_END; ^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_preprocessor.h:733:53: note: expanded from macro 'TOML_NAMESPACE_END' #define TOML_NAMESPACE_END } static_assert(true) ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:326:42: error: no template named 'is_same_v' in namespace 'std'; did you mean 'is_same'? static constexpr bool is_native = std::is_same_v; ~~~~~^~~~~~~~~ is_same /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/type_traits:1503:12: note: 'is_same' declared here struct is_same ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:326:67: error: expected '(' for function-style cast or type construction static constexpr bool is_native = std::is_same_v; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:385:48: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] static_assert(value_traits::is_native); ^ , "" /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:385:16: error: static_assert expression is not an integral constant expression static_assert(value_traits::is_native); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:386:48: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] static_assert(value_traits::is_signed); ^ , "" /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:387:74: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] static_assert(value_traits::is_losslessly_convertible_to_native); ^ , "" /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:388:59: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] static_assert(value_traits::can_represent_native); ^ , "" /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:389:69: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] static_assert(value_traits::can_partially_represent_native); ^ , "" /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:403:42: error: no template named 'is_same_v' in namespace 'std'; did you mean 'is_same'? static constexpr bool is_native = std::is_same_v; ~~~~~^~~~~~~~~ is_same /usr/bin/../lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/type_traits:1503:12: note: 'is_same' declared here struct is_same ^ In file included from /home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/test_package_multi.cpp:1: In file included from /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml.h:18: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:403:67: error: expected '(' for function-style cast or type construction static constexpr bool is_native = std::is_same_v; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/toml++/toml_common.h:444:47: warning: static_assert with no message is a C++17 extension [-Wc++17-extensions] static_assert(value_traits::is_native); ^ , "" fatal error: too many errors emitted, stopping now [-ferror-limit=] 24 warnings and 20 errors generated. make[2]: *** [CMakeFiles/test_package_multi.dir/test_package_multi.cpp.o] Error 1 make[1]: *** [CMakeFiles/test_package_multi.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... make: *** [all] Error 2 tomlplusplus/2.5.0: WARN: Lib folder doesn't exist, can't collect libraries: /home/conan/w/BuildSingleReference/.conan/data/tomlplusplus/2.5.0/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/lib ERROR: tomlplusplus/2.5.0 (test package): Error in build() method, line 18 cmake.build() ConanException: Error 2 while executing cmake --build '/home/conan/w/BuildSingleReference/conan-center-index/recipes/tomlplusplus/all/test_package/build/1dd1761c1e2948d56b55443f1683af533b2c533d' '--' '-j3'