CppNumericalSolvers/Dockerfile.test at main · PatWie/CppNumericalSolvers · GitHub

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FROM ubuntu:24.04
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install -y --no-install-recommends \
    g++ cmake make pkg-config libeigen3-dev \
    && rm -rf /var/lib/apt/lists/*

# Copy the library source into the image.
COPY . /opt/cppoptlib

# Create the example project inline.
RUN mkdir -p /tmp/example
COPY <<'MAIN_CPP' /tmp/example/main.cpp
#include <cassert>
#include <cmath>
#include <iostream>

#include "Eigen/Core"
#include "cppoptlib/function.h"
#include "cppoptlib/solver/lbfgs.h"

class Quadratic : public cppoptlib::function::FunctionCRTP<
                      Quadratic, double,
                      cppoptlib::function::DifferentiabilityMode::First, 2> {
 public:
  ScalarType operator()(const VectorType &x, VectorType *grad) const {
    if (grad) *grad = Eigen::Vector2d(10 * x[0], 200 * x[1]);
    return 5 * x[0] * x[0] + 100 * x[1] * x[1] + 5;
  }
};

int main() {
  Quadratic f;
  Eigen::Vector2d x0(-10, 2);

  cppoptlib::solver::Lbfgs<Quadratic> solver;
  auto [solution, state] =
      solver.Minimize(f, cppoptlib::function::FunctionState(x0));

  constexpr double convergence_tolerance = 1e-4;
  assert(std::abs(solution.x[0]) < convergence_tolerance);
  assert(std::abs(solution.x[1]) < convergence_tolerance);
  assert(std::abs(solution.value - 5.0) < convergence_tolerance);

  std::cout << "x* = " << solution.x.transpose() << "\n";
  std::cout << "f* = " << solution.value << "\n";
  std::cout << "iterations = " << state.num_iterations << "\n";
  std::cout << "PASS\n";
  return 0;
}
MAIN_CPP

COPY <<'CMAKELISTS' /tmp/example/CMakeLists.txt
cmake_minimum_required(VERSION 3.14)
project(cppoptlib_example LANGUAGES CXX)

option(ENABLE_EXCEPTIONS "Enable C++ exceptions" ON)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

include(FetchContent)
FetchContent_Declare(cppoptlib
  SOURCE_DIR ${CPPOPTLIB_SOURCE}
)
FetchContent_MakeAvailable(cppoptlib)

find_package(Eigen3 REQUIRED NO_MODULE)

add_executable(example main.cpp)
target_link_libraries(example PRIVATE CppNumericalSolvers Eigen3::Eigen)

if(NOT ENABLE_EXCEPTIONS)
  target_compile_options(example PRIVATE -fno-exceptions)
endif()
CMAKELISTS

# ===========================================================
# Test 1: FetchContent workflow
# ===========================================================
RUN echo "=== TEST: FetchContent ===" \
    && cmake -S /tmp/example -B /tmp/build-fc \
         -DCPPOPTLIB_SOURCE=/opt/cppoptlib \
    && cmake --build /tmp/build-fc \
    && /tmp/build-fc/example \
    && rm -rf /tmp/build-fc

# ===========================================================
# Test 2: FetchContent with exceptions disabled
# ===========================================================
RUN echo "=== TEST: FetchContent (no exceptions) ===" \
    && cmake -S /tmp/example -B /tmp/build-noexcept \
         -DCPPOPTLIB_SOURCE=/opt/cppoptlib \
         -DENABLE_EXCEPTIONS=OFF \
    && cmake --build /tmp/build-noexcept \
    && /tmp/build-noexcept/example \
    && rm -rf /tmp/build-noexcept

# ===========================================================
# Test 3: CMake install + pkg-config workflow
# ===========================================================
RUN echo "=== TEST: CMake install ===" \
    && cmake -S /opt/cppoptlib -B /tmp/build-install \
         -DCMAKE_INSTALL_PREFIX=/usr/local \
         -DCppNumericalSolvers_INSTALL=ON \
    && cmake --install /tmp/build-install \
    && rm -rf /tmp/build-install

RUN echo "=== TEST: pkg-config ===" \
    && pkg-config --modversion cppoptlib \
    && pkg-config --cflags cppoptlib \
    && g++ -std=c++17 -O2 $(pkg-config --cflags cppoptlib) \
         /tmp/example/main.cpp -o /tmp/example-pkgconfig \
    && /tmp/example-pkgconfig

RUN echo "ALL TESTS PASSED"