Created
July 2, 2023 00:10
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julia <--> c++ using jluna
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| Build the dockerfile | |
| inside the dockerfile, create a folder `/root/hello` and add the files | |
| `/root/hello/hello.cpp` and `/root/hello/CMakeLists.txt` | |
| Then create a directory `/root/hello/build` and run | |
| ``` | |
| cmake .. | |
| make | |
| ``` | |
| This will create a cpp executable, which you can run by | |
| ``` | |
| ./hello | |
| ``` | |
| and should print out: | |
| ``` | |
| hello from cpp | |
| [JULIA][LOG] initialization successful (1 thread(s)). | |
| hello from julia | |
| 3 | |
| ``` |
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| cmake_minimum_required(VERSION 3.1) | |
| project(hello) | |
| # set file locations | |
| set(JULIA_PATH "/usr/local/julia") | |
| set(JULIA_INCLUDE_DIRS "${JULIA_PATH}/include/julia") | |
| set(JULIA_LIBRARY "${JULIA_PATH}/lib") | |
| set(JLUNA_INCLUDE_DIRS "/root/jluna") | |
| # link to julia and jluna | |
| link_directories(${JULIA_LIBRARY}) | |
| find_package(jluna REQUIRED) | |
| add_executable(hello hello.cpp) | |
| # needs to be positition independent code | |
| target_compile_options(hello PRIVATE "-fpic") | |
| target_link_libraries(hello PUBLIC | |
| jluna | |
| julia | |
| ) | |
| target_include_directories(hello PRIVATE | |
| ${JLUNA_INCLUDE_DIRS} | |
| ${JULIA_INCLUDE_DIRS} | |
| ) | |
| target_compile_features(hello PRIVATE cxx_std_20) |
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| FROM julia | |
| ENV DEBIAN_FRONTEND noninteractive | |
| # install build tools etc | |
| RUN apt-get update && apt-get install -y --no-install-recommends git cmake build-essential g++ ca-certificates | |
| # install jluna | |
| WORKDIR /root | |
| RUN git clone https://github.com/clemapfel/jluna.git | |
| WORKDIR /root/jluna/build | |
| RUN cmake .. | |
| RUN make install | |
| WORKDIR /root |
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| #include <iostream> | |
| #include <jluna.hpp> | |
| using namespace jluna; | |
| int main(int argc, char* argv[]) | |
| { | |
| std::cout << "hello from cpp" << std::endl; | |
| initialize(); | |
| Base["println"]("hello from julia"); | |
| auto array_proxy = Main.safe_eval("return [1, 2, 3, 4]"); | |
| Int64 third = array_proxy[2]; | |
| std::cout << third << std::endl; | |
| return 0; | |
| } |
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