build-system-toy/main.cxx

#include "command_builder.h"

// TODO(samjaffe): This function should perform a check to see if the
// the buildfile actually needs to be recompiled.
int compile_build_system() {
  std::cout << "Generating Build System..." << std::endl;
  // TODO(samjaffe): Magic constant for compiler
  auto cmd = build::command_builder("clang++", 1)
             // TODO(samjaffe): Detect the correct build source file
             << build::version::cxx17 << "build.cxx"
             << "-o"
             << "./build";
  int const rc = cmd.execute();
  if (rc) {
    std::cout << "Completed with errors, aborting" << std::endl;
  } else {
    std::cout << "Done!" << std::endl;
  }
  return rc;
}

int run_build_system(int const argc, char const * const argv[]) {
  std::vector<char const *> arguments(argv + 1, argv + argc);
  std::cout << "Building... ";
  // TODO(samjaffe): Magic constant
  auto cmd = build::command_builder("./build") << arguments;
  int const rc = cmd.execute();
  if (rc) {
    std::cout << "Build failed!" << std::endl;
  } else {
    std::cout << "Success!" << std::endl;
  }
  return rc;
}

int main(int argc, char const * const argv[]) {
  if (int rc = compile_build_system()) { return rc; }
  return run_build_system(argc, argv);
}