Does any one try to build a cpp target?

[ReverseJay]

i download antlr4-cpp-runtime-4.11.1 then use cmake to create LIBANTLR4.sln, build antlr4_static with cpp17 Debug/Release, and i got two antlr4-runtime-static.lib, then i copy all files in runtime/src to include file, all static library to lib file, then set my project's configuration:
C/C++ -- General -- Additional Include Directories $(SolutionDir)include
C/C++ -- Code Generation --Runtime Library /MTd
Linker -- General -- Additional Library Directories $(SolutionDir)lib
Linker -- Input -- Additional Dependencies antlr4-runtime-static.lib

And I put #define ANTLR4CPP_STATIC on my main.cpp
After that, i write a simple g4 file

grammar MyOwnLanguage;

program : INT*;

CallFunc    : '->';
INT : NoZeroDigit Digit+ | Digit;
fragment
NoZeroDigit: [1-9];
fragment
Digit   : [0-9];

COMMENT : '#' .*? '\n' ->skip;
WS  : [ \t\r\n]->skip;

then put -Dlanguage=Cpp in command, finally i got a bunch of c files
so my main.cpp is down below

#include <iostream>

#define ANTLR4CPP_STATIC

#include <antlr4-runtime.h>
#include "MyOwnLanguageLexer.h"
#include "MyOwnLanguageParser.h"
#include "SimpleAnalyzer.h"
using namespace antlr4;

int main()
{
	ANTLRInputStream input("12 215");
	MyOwnLanguageLexer lexer(&input);
	CommonTokenStream tokens(&lexer);
	MyOwnLanguageParser parser(&tokens);
	tree::ParseTree* tree = parser.program();
	SimpleAnalyzer listener;
	tree::ParseTreeWalker::DEFAULT.walk(&listener, tree);
	std::cout << "Hello antlr4" << std::endl;
}

when compile I got link errors

1>------ Build started: Project: TestAntlr, Configuration: Debug x64 ------
1>main.cpp
1>main.obj : error LNK2019: unresolved external symbol "public: __cdecl MyOwnLanguageLexer::MyOwnLanguageLexer(class antlr4::CharStream *)" (??0MyOwnLanguageLexer@@QEAA@PEAVCharStream@antlr4@@@Z) referenced in function main
1>main.obj : error LNK2019: unresolved external symbol "public: virtual __cdecl MyOwnLanguageLexer::~MyOwnLanguageLexer(void)" (??1MyOwnLanguageLexer@@UEAA@XZ) referenced in function main
1>main.obj : error LNK2019: unresolved external symbol "public: __cdecl MyOwnLanguageParser::MyOwnLanguageParser(class antlr4::TokenStream *)" (??0MyOwnLanguageParser@@QEAA@PEAVTokenStream@antlr4@@@Z) referenced in function main
1>main.obj : error LNK2019: unresolved external symbol "public: virtual __cdecl MyOwnLanguageParser::~MyOwnLanguageParser(void)" (??1MyOwnLanguageParser@@UEAA@XZ) referenced in function main
1>main.obj : error LNK2019: unresolved external symbol "public: class MyOwnLanguageParser::ProgramContext * __cdecl MyOwnLanguageParser::program(void)" (?program@MyOwnLanguageParser@@QEAAPEAVProgramContext@1@XZ) referenced in function main
1>C:\Users\Jay\Desktop\TestAntlr\x64\Debug\TestAntlr.exe : fatal error LNK1120: 5 unresolved externals
1>Done building project "TestAntlr.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

which confused me.
Any suggestions?

[kaby76]

It looks like it's not compiling the generated code and linking it in with your test program. In Visual Studio, you need to add MyOwnLanguageParser.cpp and MyOwnLnaguageLexer.cpp to your project in the Solution Explorer. Right-click on the project, the select in the context menu "Add", and "Add existing".