Building and Usage

How to build and integrate Condy in your project.

Direct Header-Only Usage

Condy is a header-only library. You can use it by simply including the header file in your project.
Make sure liburing (≥2.3) is installed on your system.

#include <condy.hpp>

Compile your code:

c++ main.cpp -std=c++20 -luring -I/path/to/condy    

Using Condy as a Submodule

You can add Condy to your project via Git submodule:

git submodule add https://github.com/wokron/condy.git third_party/condy

In your CMakeLists.txt:

add_subdirectory(third_party/condy)
add_executable(my_app src/main.cpp)
target_link_libraries(my_app PRIVATE condy)

Note

• C++20 is required for coroutine support.
• Condy depends on liburing ≥ 2.3.
• Both GCC and Clang compilers are supported.
• By default, Condy downloads and links liburing via FetchContent (CONDY_LINK_LIBURING=ON). Set CONDY_LINK_LIBURING_VERSION to use a specific liburing version, e.g. -DCONDY_LINK_LIBURING_VERSION=2.15.
• To link against the system liburing, set CONDY_LINK_LIBURING=OFF and install liburing manually.

Using Condy via FetchContent

Alternatively, you can add Condy with FetchContent:

include(FetchContent)
FetchContent_Declare(
    condy
    GIT_REPOSITORY https://github.com/wokron/condy.git
    GIT_TAG v1.9  # Change to the tag you want
)
FetchContent_MakeAvailable(condy)
add_executable(my_app src/main.cpp)
target_link_libraries(my_app PRIVATE condy)

Building Examples / Benchmarks / Tests

Condy provides CMake options to build examples, benchmarks, and tests:

cmake -B build -S . \
    -DCONDY_BUILD_EXAMPLES=ON \
    -DCONDY_BUILD_BENCHMARKS=ON \
    -DCONDY_BUILD_TESTS=ON \
    -DCMAKE_BUILD_TYPE=Release
cmake --build build -j$(nproc)

After building:

• Run all tests:

ctest --test-dir build

• Run example programs:

./build/examples/link-cp from.bin to.bin

C++20 Module Support

Condy provides an optional C++20 module interface as an alternative to #include <condy.hpp>.

import condy;

Requirements

• CMake 3.28+ with Ninja generator
• GCC 14+ or Clang 16+

Building the Example

cmake -B build -S . -G Ninja \
    -DCONDY_BUILD_MODULE=ON \
    -DCONDY_BUILD_EXAMPLES=ON
ninja -C build module-hello
 
./build/examples/module-hello
# Hello, Condy (via module)!

Using in Your Project

The module target is condy_module:

set(CONDY_BUILD_MODULE ON)
add_subdirectory(third_party/condy)
add_executable(my_app src/main.cpp)
target_link_libraries(my_app PRIVATE condy_module)

Version Compatibility

Condy supports liburing ≥ 2.3. When building with a specific version of liburing, Condy assumes that all related interfaces provided by that version are already supported by your Linux kernel.

Note

If your kernel version is older than the liburing version you are using, some features may not be available at runtime, even if compilation succeeds.
For best compatibility and feature support, it is recommended to use a Linux kernel version that matches or exceeds the requirements of your chosen liburing version.