If your project uses Travis as a CI service, you might want to know how these changes affect to your. # INSTALL_COMMAND "" )Īnd thatâs it! Simple enough right? We didnât even have to touch CMakeLists.txt! Just for funzies: Travis-CI integration # CMakeLists.txt # add generated grammar to demo binary target add_executable (test_antlr main.cpp $ pull #. Create a folder with the following structure, leaving main.cpp and CMakeLists.txt empty.With all this in hand, letâs create a simple project that links against the library: A handy macro that takes care of generating the Lexer and Parser classes and adding a compilation target antlr4cpp_generation_ and the handy variable antlr4cpp_include_dirs_ to include in your CMakeLists.txt.It also sets the useful variables ANTLR4CPP_INCLUDE_DIR (to include in your projectâs CMakeLists.txt) and ANTLR4CPP_LIBS, the directory where the compiled libraries will be stored. The ExternalProject_Add call to add antlr4cpp as an external dependency, by downloading it from GitHub and adding a compilation target.A great comment introduction explaining what a minimal CMake project should look like to link against antlr4cpp.Letâs take a moment to explore the contents of this magnificent file: cmaketargetname: Name of the target to be consumed. cmake extension included with the runtime, makes it possible to add ANTLR 4 as a dependency with minimal changes to the project. The following properties affect the CMakeDeps generator: cmakefilename: The config file generated for the current package will follow the -config.cmake pattern, so to find the package you write findpackage().That, combined with a handy file with the. Basic: ExternalProject with remoteįor those unaware, ExternalProject is a neat package from CMake that makes easy to include⦠well⦠projects from outside your project. You can get it in Debian-based distros via $ sudo apt-get install uuid-dev Compilation exampleÄ«eware: The compilation of the library takes a long time. NOTE: Under Linux, the runtime needs package uuid-dev. They are not the only ones and they both rely on the ExternalProject CMake package, but after testing several other ways these ones were the easiest to me. The next sections illustrate the two easiest ways I found to integrate it into a project. Luckily, the C++ runtime also is built using CMake, which makes the integration at least 20% less painful. ![]() In order to use the newly generated classes, we need to compile and link them against the runtime, which is obtained from the main repo. with the flag -visitor), additional classes will be created.Īs we will see later, we never actually have to invoke this command by hand. This will generate files such as MyGrammarParser.h and MyGrammarLexer.h.
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