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Osman Zakir via llvm-dev

2018-Dec-11 20:43 UTC

[llvm-dev] Using LLD to link against third-party libraries? How?

In my code here https://github.com/DragonOsman/currency_converter , I used C++17
and managed to get it to work (though I'm only using
std::map::insert_or_assign() from C++17).  And I'm using Windows, so I
shouldn't use LDFLAGS or CXXFLAGS as environment variables.  I'll use
them directly on the compiler command line instead.  The libraries I need to
link against are C:/boost_1_68_0/stage/lib/libboost_system-vc141-mt-x64-1_68.lib
and C:/Jinja2Cpp/install_x64/lib/static/jinja2cpp.lib.

I tried to build it with this flag:
"
clang++ -std=c++17 -Wall -pedantic
-D_SILENCE_CXX17_ADAPTOR_TYPEDEFS_DEPRECATION_WARNING
-Dvariant_CONFIG_SELECT_VARIANT=variant_VARIANT_NONSTD
-D_SILENCE_CXX17_ALLOCATOR_VOID_DEPRECATION_WARNING -D_CRT_SECURE_NO_WARNINGS
-D_WINSOCK_DEPRECATED_NO_WARNINGS -D_WIN32 -D_WIN32_WINDOWS -D_NDEBUG
-fexceptions -IC:/Jinja2Cpp/install_x64/include -IC:/json/single_include
-IC:/boost_1_68_0
-LC:/boost_1_68_0/stage/lib/libboost_system-vc141-mt-x64-1_68.lib
-LC:/Jinja2Cpp/install_x64/lib/static/jinja2cpp.lib currency_converter.cpp -o
currency_converter.exe
"
And I got these warnings and errors from LLD:

"
lld-link: warning:
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o: locally defined
symbol imported: __std_terminate (defined in libvcruntime.lib(ehhelpers.obj))
[LNK4217]
lld-link: error: undefined symbol: "public: __cdecl
jinja2::Template::Template(class jinja2::TemplateEnv *)" (??0Template at
jinja2@@QEAA at PEAVTemplateEnv@1@@Z)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
lld-link: error: undefined symbol: "public: class
nonstd::expected_lite::expected<void, class
jinja2::ErrorInfoTpl<char>> __cdecl
jinja2::Template::LoadFromFile(class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>> const
&)" (?LoadFromFile at Template@jinja2@@QEAA?AV?$expected at
XV?$ErrorInfoTpl at D@jinja2@@@expected_lite at nonstd@@AEBV?$basic_string at
DU?$char_traits at D@std@@V?$allocator at D@2@@std@@@Z)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
lld-link: error: undefined symbol: "public: class
std::basic_string<char, struct std::char_traits<char>, class
std::allocator<char>> __cdecl jinja2::Template::RenderAsString(class
std::unordered_map<class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>>, class
jinja2::Value, struct std::hash<class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>>>, struct
std::equal_to<class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>>>, class
std::allocator<struct std::pair<class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>> const, class
jinja2::Value>>> const &)" (?RenderAsString at
Template@jinja2@@QEAA?AV?$basic_string at DU?$char_traits at D@std@@V?$allocator
at D@2@@std@@AEBV?$unordered_map at V?$basic_string at DU?$char_traits at
D@std@@V?$allocator at D@2@@std@@VValue at jinja2@@U?$hash at V?$basic_string at
DU?$char_traits at D@std@@V?$allocator at D@2@@std@@@2 at U?$equal_to at
V?$basic_string at DU?$char_traits at D@std@@V?$allocator at D@2@@std@@@2 at
V?$allocator at U?$pair@$$CBV?$basic_string at DU?$char_traits at
D@std@@V?$allocator at D@2@@std@@VValue at
jinja2@@@std@@@2@@4@@Z)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
lld-link: error: undefined symbol: "public: __cdecl
jinja2::Template::~Template(void)" (??1Template at jinja2@@QEAA at
XZ)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("int `void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct basic_string_view<char, struct
std::char_traits<char>>::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)'::`1'::dtor$114" (?dtor$114@?0???$handle_request at
U?$basic_string_body at DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$allocator at D@std@@AEAUsend_lambda at
server_session@@@@YAXV?$basic_string_view at DU?$char_traits at
D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$basic_fields at V?$allocator
at D@std@@@234@@http at beast@1 at AEAUsend_lambda@server_session@@PEBD3 at
Z@4HA))
lld-link: warning:
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o: locally defined
symbol imported: _CxxThrowException (defined in libvcruntime.lib(throw.obj))
[LNK4217]
lld-link: error: undefined symbol: "class boost::system::error_category
const & __cdecl boost::system::detail::system_category_ncx(void)"
(?system_category_ncx at detail@system at boost@@YAAEBVerror_category at
23@XZ)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("class
boost::system::error_category const & __cdecl
boost::system::system_category(void)" (?system_category at
system@boost@@YAAEBVerror_category at 12@XZ))
lld-link: warning:
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o: locally defined
symbol imported: __RTDynamicCast (defined in libvcruntime.lib(rtti.obj))
[LNK4217]
lld-link: error: undefined symbol: "class boost::system::error_category
const & __cdecl boost::system::detail::generic_category_ncx(void)"
(?generic_category_ncx at detail@system at boost@@YAAEBVerror_category at
23@XZ)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("class
boost::system::error_category const & __cdecl
boost::system::generic_category(void)" (?generic_category at
system@boost@@YAAEBVerror_category at 12@XZ))clang++: error: linker command failed with exit code 1 (use -v to see
invocation)
"
[https://avatars0.githubusercontent.com/u/18173932?s=400&v=4]<https://github.com/DragonOsman/currency_converter>

GitHub - DragonOsman/currency_converter: Application for Computer Science
course<https://github.com/DragonOsman/currency_converter>
Google Maps + Currency Converter Web Application. Application for Computer
Science course. This is a currency converter web application with the frontend
and a backend.
github.com



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Osman Zakir via llvm-dev

2018-Dec-11 22:08 UTC

head link

[llvm-dev] Using LLD to link against third-party libraries? How?

@blubee blubeeme<mailto:gurenchan at gmail.com> So what do you think?  Got
any ideas?
________________________________
From: Osman Zakir <osmanzakir90 at hotmail.com>
Sent: Wednesday, December 12, 2018 1:43 AM
To: llvm-dev at lists.llvm.org
Subject: Re: [llvm-dev] Using LLD to link against third-party libraries? How?

In my code here https://github.com/DragonOsman/currency_converter , I used C++17
and managed to get it to work (though I'm only using
std::map::insert_or_assign() from C++17).  And I'm using Windows, so I
shouldn't use LDFLAGS or CXXFLAGS as environment variables.  I'll use
them directly on the compiler command line instead.  The libraries I need to
link against are C:/boost_1_68_0/stage/lib/libboost_system-vc141-mt-x64-1_68.lib
and C:/Jinja2Cpp/install_x64/lib/static/jinja2cpp.lib.

I tried to build it with this flag:
"
clang++ -std=c++17 -Wall -pedantic
-D_SILENCE_CXX17_ADAPTOR_TYPEDEFS_DEPRECATION_WARNING
-Dvariant_CONFIG_SELECT_VARIANT=variant_VARIANT_NONSTD
-D_SILENCE_CXX17_ALLOCATOR_VOID_DEPRECATION_WARNING -D_CRT_SECURE_NO_WARNINGS
-D_WINSOCK_DEPRECATED_NO_WARNINGS -D_WIN32 -D_WIN32_WINDOWS -D_NDEBUG
-fexceptions -IC:/Jinja2Cpp/install_x64/include -IC:/json/single_include
-IC:/boost_1_68_0
-LC:/boost_1_68_0/stage/lib/libboost_system-vc141-mt-x64-1_68.lib
-LC:/Jinja2Cpp/install_x64/lib/static/jinja2cpp.lib currency_converter.cpp -o
currency_converter.exe
"
And I got these warnings and errors from LLD:

"
lld-link: warning:
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o: locally defined
symbol imported: __std_terminate (defined in libvcruntime.lib(ehhelpers.obj))
[LNK4217]
lld-link: error: undefined symbol: "public: __cdecl
jinja2::Template::Template(class jinja2::TemplateEnv *)" (??0Template at
jinja2@@QEAA at PEAVTemplateEnv@1@@Z)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
lld-link: error: undefined symbol: "public: class
nonstd::expected_lite::expected<void, class
jinja2::ErrorInfoTpl<char>> __cdecl
jinja2::Template::LoadFromFile(class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>> const
&)" (?LoadFromFile at Template@jinja2@@QEAA?AV?$expected at
XV?$ErrorInfoTpl at D@jinja2@@@expected_lite at nonstd@@AEBV?$basic_string at
DU?$char_traits at D@std@@V?$allocator at D@2@@std@@@Z)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
lld-link: error: undefined symbol: "public: class
std::basic_string<char, struct std::char_traits<char>, class
std::allocator<char>> __cdecl jinja2::Template::RenderAsString(class
std::unordered_map<class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>>, class
jinja2::Value, struct std::hash<class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>>>, struct
std::equal_to<class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>>>, class
std::allocator<struct std::pair<class std::basic_string<char, struct
std::char_traits<char>, class std::allocator<char>> const, class
jinja2::Value>>> const &)" (?RenderAsString at
Template@jinja2@@QEAA?AV?$basic_string at DU?$char_traits at D@std@@V?$allocator
at D@2@@std@@AEBV?$unordered_map at V?$basic_string at DU?$char_traits at
D@std@@V?$allocator at D@2@@std@@VValue at jinja2@@U?$hash at V?$basic_string at
DU?$char_traits at D@std@@V?$allocator at D@2@@std@@@2 at U?$equal_to at
V?$basic_string at DU?$char_traits at D@std@@V?$allocator at D@2@@std@@@2 at
V?$allocator at U?$pair@$$CBV?$basic_string at DU?$char_traits at
D@std@@V?$allocator at D@2@@std@@VValue at
jinja2@@@std@@@2@@4@@Z)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
lld-link: error: undefined symbol: "public: __cdecl
jinja2::Template::~Template(void)" (??1Template at jinja2@@QEAA at
XZ)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct boost::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)" (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_session@@@@YAXV?$basic_string_view at
DU?$char_traits at D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at
DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z))
>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("int `void
__cdecl handle_request<struct boost::beast::http::basic_string_body<char,
struct std::char_traits<char>, class std::allocator<char>>, class
std::allocator<char>, struct server_session::send_lambda &>(class
boost::basic_string_view<char, struct std::char_traits<char>>,
struct basic_string_view<char, struct
std::char_traits<char>>::beast::http::message<1, struct
boost::beast::http::basic_string_body<char, struct
std::char_traits<char>, class std::allocator<char>>, class
boost::beast::http::basic_fields<class std::allocator<char>>>
&&, struct server_session::send_lambda &, char const *, char const
*)'::`1'::dtor$114" (?dtor$114@?0???$handle_request at
U?$basic_string_body at DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$allocator at D@std@@AEAUsend_lambda at
server_session@@@@YAXV?$basic_string_view at DU?$char_traits at
D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?$basic_fields at V?$allocator
at D@std@@@234@@http at beast@1 at AEAUsend_lambda@server_session@@PEBD3 at
Z@4HA))
lld-link: warning:
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o: locally defined
symbol imported: _CxxThrowException (defined in libvcruntime.lib(throw.obj))
[LNK4217]
lld-link: error: undefined symbol: "class boost::system::error_category
const & __cdecl boost::system::detail::system_category_ncx(void)"
(?system_category_ncx at detail@system at boost@@YAAEBVerror_category at
23@XZ)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("class
boost::system::error_category const & __cdecl
boost::system::system_category(void)" (?system_category at
system@boost@@YAAEBVerror_category at 12@XZ))
lld-link: warning:
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o: locally defined
symbol imported: __RTDynamicCast (defined in libvcruntime.lib(rtti.obj))
[LNK4217]
lld-link: error: undefined symbol: "class boost::system::error_category
const & __cdecl boost::system::detail::generic_category_ncx(void)"
(?generic_category_ncx at detail@system at boost@@YAAEBVerror_category at
23@XZ)>>> referenced by
C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("class
boost::system::error_category const & __cdecl
boost::system::generic_category(void)" (?generic_category at
system@boost@@YAAEBVerror_category at 12@XZ))clang++: error: linker command failed with exit code 1 (use -v to see
invocation)
"
[https://avatars0.githubusercontent.com/u/18173932?s=400&v=4]<https://github.com/DragonOsman/currency_converter>

GitHub - DragonOsman/currency_converter: Application for Computer Science
course<https://github.com/DragonOsman/currency_converter>
Google Maps + Currency Converter Web Application. Application for Computer
Science course. This is a currency converter web application with the frontend
and a backend.
github.com



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David Greene via llvm-dev

2018-Dec-11 22:30 UTC

head link

[llvm-dev] Using LLD to link against third-party libraries? How?

Are you linking with a C++ compiler?  A lot of those missing symbols
look like they come from the C++ standard library.

                          -David

Osman Zakir via llvm-dev <llvm-dev at lists.llvm.org> writes:
> @blubee blubeeme So what do you think? Got any ideas?
> ----------------------------------------------------------------------
> From: Osman Zakir <osmanzakir90 at hotmail.com>
> Sent: Wednesday, December 12, 2018 1:43 AM
> To: llvm-dev at lists.llvm.org
> Subject: Re: [llvm-dev] Using LLD to link against third-party
> libraries? How? 
> In my code here https://github.com/DragonOsman/currency_converter , I
> used C++17 and managed to get it to work (though I'm only using
> std::map::insert_or_assign() from C++17). And I'm using Windows, so I
> shouldn't use LDFLAGS or CXXFLAGS as environment variables. I'll
use
> them directly on the compiler command line instead. The libraries I
> need to link against are
> C:/boost_1_68_0/stage/lib/libboost_system-vc141-mt-x64-1_68.lib and
> C:/Jinja2Cpp/install_x64/lib/static/jinja2cpp.lib.
>
> I tried to build it with this flag:
> "
> clang++ -std=c++17 -Wall -pedantic -
> D_SILENCE_CXX17_ADAPTOR_TYPEDEFS_DEPRECATION_WARNING -
> Dvariant_CONFIG_SELECT_VARIANT=variant_VARIANT_NONSTD -
> D_SILENCE_CXX17_ALLOCATOR_VOID_DEPRECATION_WARNING -
> D_CRT_SECURE_NO_WARNINGS -D_WINSOCK_DEPRECATED_NO_WARNINGS -D_WIN32 -
> D_WIN32_WINDOWS -D_NDEBUG -fexceptions -
> IC:/Jinja2Cpp/install_x64/include -IC:/json/single_include -
> IC:/boost_1_68_0 -
> LC:/boost_1_68_0/stage/lib/libboost_system-vc141-mt-x64-1_68.lib -
> LC:/Jinja2Cpp/install_x64/lib/static/jinja2cpp.lib
> currency_converter.cpp -o currency_converter.exe
> "
> And I got these warnings and errors from LLD:
>
> " 
> lld-link: warning:
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o: locally
> defined symbol imported: __std_terminate (defined in libvcruntime.lib
> (ehhelpers.obj)) [LNK4217]
> lld-link: error: undefined symbol: "public: __cdecl
> jinja2::Template::Template(class jinja2::TemplateEnv *)"
> (??0Template at jinja2@@QEAA at PEAVTemplateEnv@1@@Z)
>>>> referenced by
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void _
> _cdecl handle_request<struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> std::allocator<char>, struct server_session::send_lambda
&>(class
> boost::basic_string_view<char, struct std::char_traits<char>>,
struct
> boost::beast::http::message<1, struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> boost::beast::http::basic_fields<class
std::allocator<char>>> &&,
> struct server_session::send_lambda &, char const *, char const *)"
> (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?
> $allocator at D@std@@AEAUsend_lambda at
server_session@@@@YAXV?$basic_string_
> view at DU?$char_traits at
D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_
> body at DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_
> fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z)
> )
>  
> lld-link: error: undefined symbol: "public: class
> nonstd::expected_lite::expected<void, class
> jinja2::ErrorInfoTpl<char>> __cdecl jinja2::Template::LoadFromFile
> (class std::basic_string<char, struct std::char_traits<char>,
class
> std::allocator<char>> const &)"
> (?LoadFromFile at Template@jinja2@@QEAA?AV?$expected at XV?$ErrorInfoTpl at
D@jinja2@@@expected_
> lite at nonstd@@AEBV?$basic_string at DU?$char_traits at
D@std@@V?$allocator at D@2@@std@@@Z)
>  
>>>> referenced by
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void _
> _cdecl handle_request<struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> std::allocator<char>, struct server_session::send_lambda
&>(class
> boost::basic_string_view<char, struct std::char_traits<char>>,
struct
> boost::beast::http::message<1, struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> boost::beast::http::basic_fields<class
std::allocator<char>>> &&,
> struct server_session::send_lambda &, char const *, char const *)"
> (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?
> $allocator at D@std@@AEAUsend_lambda at
server_session@@@@YAXV?$basic_string_
> view at DU?$char_traits at
D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_
> body at DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_
> fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z)
> )
>  
> lld-link: error: undefined symbol: "public: class
> std::basic_string<char, struct std::char_traits<char>, class
> std::allocator<char>> __cdecl
jinja2::Template::RenderAsString(class
> std::unordered_map<class std::basic_string<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> jinja2::Value, struct std::hash<class std::basic_string<char, struct
> std::char_traits<char>, class std::allocator<char>>>,
struct
> std::equal_to<class std::basic_string<char, struct
> std::char_traits<char>, class std::allocator<char>>>,
class
> std::allocator<struct std::pair<class std::basic_string<char,
struct
> std::char_traits<char>, class std::allocator<char>> const,
class
> jinja2::Value>>> const &)"
> (?RenderAsString at Template@jinja2@@QEAA?AV?$basic_string at
DU?$char_traits at D@std@@V?
> $allocator at D@2@@std@@AEBV?$unordered_map at V?$basic_string at
DU?$char_traits at D@std@@V?
> $allocator at D@2@@std@@VValue at jinja2@@U?$hash at V?$basic_string at
DU?$char_traits at D@std@@V?
> $allocator at D@2@@std@@@2 at U?$equal_to at V?$basic_string at
DU?$char_traits at D@std@@V?
> $allocator at D@2@@std@@@2 at V?$allocator at U?$pair@$$CBV?$basic_string
at DU?$char_
> traits at D@std@@V?$allocator at D@2@@std@@VValue at
jinja2@@@std@@@2@@4@@Z)
>>>> referenced by
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void _
> _cdecl handle_request<struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> std::allocator<char>, struct server_session::send_lambda
&>(class
> boost::basic_string_view<char, struct std::char_traits<char>>,
struct
> boost::beast::http::message<1, struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> boost::beast::http::basic_fields<class
std::allocator<char>>> &&,
> struct server_session::send_lambda &, char const *, char const *)"
> (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?
> $allocator at D@std@@AEAUsend_lambda at
server_session@@@@YAXV?$basic_string_
> view at DU?$char_traits at
D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_
> body at DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_
> fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z)
> )
>>>> referenced by
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void _
> _cdecl handle_request<struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> std::allocator<char>, struct server_session::send_lambda
&>(class
> boost::basic_string_view<char, struct std::char_traits<char>>,
struct
> boost::beast::http::message<1, struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> boost::beast::http::basic_fields<class
std::allocator<char>>> &&,
> struct server_session::send_lambda &, char const *, char const *)"
> (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?
> $allocator at D@std@@AEAUsend_lambda at
server_session@@@@YAXV?$basic_string_
> view at DU?$char_traits at
D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_
> body at DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_
> fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z)
> )
>  
> lld-link: error: undefined symbol: "public: __cdecl
> jinja2::Template::~Template(void)" (??1Template at jinja2@@QEAA at
XZ)
>>>> referenced by
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("void _
> _cdecl handle_request<struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> std::allocator<char>, struct server_session::send_lambda
&>(class
> boost::basic_string_view<char, struct std::char_traits<char>>,
struct
> boost::beast::http::message<1, struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> boost::beast::http::basic_fields<class
std::allocator<char>>> &&,
> struct server_session::send_lambda &, char const *, char const *)"
> (??$handle_request at U?$basic_string_body at DU?$char_traits at
D@std@@V?$allocator at D@2@@http at beast@boost@@V?
> $allocator at D@std@@AEAUsend_lambda at
server_session@@@@YAXV?$basic_string_
> view at DU?$char_traits at
D@std@@@boost@@$$QEAU?$message@$00U?$basic_string_
> body at DU?$char_traits at D@std@@V?$allocator at D@2@@http at
beast@boost@@V?$basic_
> fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_session@@PEBD3 at Z)
> )
>>>> referenced by
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("int
> `void __cdecl handle_request<struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> std::allocator<char>, struct server_session::send_lambda
&>(class
> boost::basic_string_view<char, struct std::char_traits<char>>,
struct
> basic_string_view<char, struct
> std::char_traits<char>>::beast::http::message<1, struct
> boost::beast::http::basic_string_body<char, struct
> std::char_traits<char>, class std::allocator<char>>, class
> boost::beast::http::basic_fields<class
std::allocator<char>>> &&,
> struct server_session::send_lambda &, char const *, char const
*)'::
> `1'::dtor$114"
> (?dtor$114@?0???$handle_request at U?$basic_string_body at DU?$char_traits
at D@std@@V?
> $allocator at D@2@@http at beast@boost@@V?$allocator at
D@std@@AEAUsend_lambda at server_
> session@@@@YAXV?$basic_string_view at DU?$char_traits at
D@std@@@boost@@$$QEAU?
> $message@$00U?$basic_string_body at DU?$char_traits at D@std@@V?$allocator
at D@2@@http at beast@boost@@V?
> $basic_fields at V?$allocator at D@std@@@234@@http at beast@1 at
AEAUsend_lambda@server_
> session@@PEBD3 at Z@4HA))
>  
> lld-link: warning:
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o: locally
> defined symbol imported: _CxxThrowException (defined in
> libvcruntime.lib(throw.obj)) [LNK4217]
> lld-link: error: undefined symbol: "class
> boost::system::error_category const & __cdecl
> boost::system::detail::system_category_ncx(void)"
> (?system_category_ncx at detail@system at boost@@YAAEBVerror_category at
23@XZ)
>>>> referenced by
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("class
> boost::system::error_category const & __cdecl
> boost::system::system_category(void)"
> (?system_category at system@boost@@YAAEBVerror_category at 12@XZ))
>  
> lld-link: warning:
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o: locally
> defined symbol imported: __RTDynamicCast (defined in libvcruntime.lib
> (rtti.obj)) [LNK4217]
> lld-link: error: undefined symbol: "class
> boost::system::error_category const & __cdecl
> boost::system::detail::generic_category_ncx(void)"
> (?generic_category_ncx at detail@system at boost@@YAAEBVerror_category at
23@XZ)
>  
>>>> referenced by
> C:\Users\Osman\AppData\Local\Temp\currency_converter-264ae1.o:("class
> boost::system::error_category const & __cdecl
> boost::system::generic_category(void)"
> (?generic_category at system@boost@@YAAEBVerror_category at 12@XZ))
> clang++: error: linker command failed with exit code 1 (use -v to see
> invocation)
> "
>
>                                                                      
>  * GitHub - DragonOsman/currency_converter: Application for Computer 
>    Science course                                                    
>    Google Maps + Currency Converter Web Application. Application for 
>    Computer Science course. This is a currency converter web         
>    application with the frontend and a backend.                      
>    github.com                                                        
>                                                                      
> *
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev

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