104 lines
2.7 KiB
Markdown
104 lines
2.7 KiB
Markdown
# Dropshell Build
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A Docker-based build system for creating statically-linked C++ executables using Alpine Linux and musl libc.
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## Overview
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This repository provides a comprehensive C++ development environment with:
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1. **dropshell-build-base**: A base image with C++ toolchain and libraries
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2. **dropshell-build**: Multi-stage Docker build system for C++ projects
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3. **Test projects**: Sample applications demonstrating the build system
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## Features
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### Libraries Available
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The base image includes statically-linked versions of:
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- **Web Framework**: Drogon with async HTTP capabilities
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- **Database Support**: PostgreSQL (libpq), MySQL/MariaDB, SQLite3
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- **HTTP Clients**:
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- Custom Drogon-based HTTP utilities (see `ipdemo`)
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- CPR (C++ Requests) library for simplified HTTP requests
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- **Networking**: cURL, c-ares, OpenSSL
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- **JSON**: nlohmann/json, jsoncpp
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- **Compression**: zlib, zstd, lzma
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- **Logging**: spdlog, fmt
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- **Utilities**: ccache, mold linker
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### HTTP Client Options
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Two HTTP client approaches are available:
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1. **Drogon HTTP Utilities** (see `tests/ipdemo/src/http_utils.hpp`):
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```cpp
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auto response = http_get("example.com", "/api/endpoint", true, 10.0);
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if (response.success && response.status_code == 200) {
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std::cout << response.body << std::endl;
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}
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```
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2. **CPR Library** (C++ Requests):
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```cpp
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#include <cpr/cpr.h>
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cpr::Response r = cpr::Get(cpr::Url{"https://example.com/api"});
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if (r.status_code == 200) {
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std::cout << r.text << std::endl;
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}
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```
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To use CPR in your CMakeLists.txt with proper static linking:
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```cmake
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find_package(nlohmann_json REQUIRED)
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# CPR static linking setup
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add_library(cpr::cpr_static STATIC IMPORTED)
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set_target_properties(cpr::cpr_static PROPERTIES
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IMPORTED_LOCATION "/usr/local/lib/libcpr.a"
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INTERFACE_INCLUDE_DIRECTORIES "/usr/local/include"
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INTERFACE_LINK_LIBRARIES "/usr/local/lib/libcurl.a;/usr/local/lib64/libssl.a;/usr/local/lib64/libcrypto.a;/usr/lib/libz.a;/usr/lib/libzstd.a;lzma;dl"
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)
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target_link_libraries(${PROJECT_NAME} PRIVATE
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nlohmann_json::nlohmann_json
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cpr::cpr_static)
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```
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## Quick Start
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### Building the Base Image
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```bash
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cd build-base
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./build.sh
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```
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### Building a Project
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```bash
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./build.sh
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```
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### Testing
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```bash
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./test.sh
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```
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## Project Structure
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### Test Projects
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- **ipdemo**: Demonstrates Drogon HTTP utilities and JSON processing
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- **test_libs**: Tests all available libraries (fmt, spdlog, SQLite3, etc.)
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- **cprdemo**: Example using CPR library for HTTP requests
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### Environment Variables
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- `CMAKE_BUILD_TYPE`: "Debug" or "Release" (default: Debug)
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- `PROJECT`: Project name to build (default: ipdemo)
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## Installation
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