How to use framework in pet project

[DmitryShipilov]

Hi there! I want just use this header only library. I've created dir, cloned RESTinio repo and trying to complete my CMake. I can't resolve my link errors bounded with fmt and http-parser. Could you tell, what should I write in CMake?

Project tree: -- RESTinio-0.6.14 (downloaded as archive) -- main.cpp -- CMakeListsts.txt

CmakeListst.txt contains:

cmake_minimum_required(VERSION 3.21) project(MyTests)

set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_BUILD_TYPE debug) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")

set (Sources main.cpp )

add_subdirectory(restinio-0.6.14/dev)

add_executable(MyTest ${Sources})

include_directories(MyTest restinio-0.6.14/dev) include_directories(MyTest restinio-0.6.14/dev/asio/include) include_directories(MyTest restinio-0.6.14/dev/fmt/include) include_directories(MyTest restinio-0.6.14/dev/nodejs/http_parser)

main.cpp contains:

include <restinio/all.hpp>

int main() { using namespace restinio; restinio::run( restinio::on_this_thread() .port(8080) .address("localhost") .request_handler([](auto req) { return req->create_response().set_body("Hello, World!").done(); })); return 0; }

[eao197]

Hi!

http_parser isn't header-only dependency, it has to be compiled to static library.

To use header-only version of fmtlib you have to specify FMT_HEADER_ONLY symbol (see this issue).

[DmitryShipilov]

Could you show minimal correct CMakeLists.txt with RESTinio library usage? I really frustrated with my desperate attempts to make it work

[eao197]

I'm not a CMake user, but it seems that in your case the minimal CMakeLists.txt could be as that:

cmake_minimum_required(VERSION 3.19)

project(restinio_example)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

set(RESTINIO_USE_BOOST_ASIO "none")

add_subdirectory(restinio-0.6.14/dev/restinio)
add_subdirectory(restinio-0.6.14/dev/fmt)
add_subdirectory(restinio-0.6.14/dev/nodejs/http_parser)

add_executable(restinio_hello main.cpp)

target_include_directories(restinio_hello PRIVATE restinio-0.6.14/dev/asio/include)

target_link_libraries(restinio_hello PRIVATE
    restinio::restinio
    fmt::fmt-header-only)

set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads)
if(Threads_FOUND)
    target_link_libraries(restinio_hello PRIVATE Threads::Threads)
endif()

if(WIN32)
    target_link_libraries(restinio_hello PRIVATE wsock32 ws2_32)
endif()

The directory structure:

example/
` restinio-0.6.14/
  `- dev/
     `- ...
`- main.cpp
`- CMakeLists.txt

But it seems that CMake will build fmtlib anyway.

[DmitryShipilov]

You are my hero!