Remake
Functions
User interface

Functions

static void usage (int exit_status)
 
int main (int argc, char *argv[])
 

Detailed Description

Function Documentation

◆ main()

int main ( int  argc,
char *  argv[] 
)

This program behaves in two different ways.

  • If the environment contains the REMAKE_SOCKET variable, the client connects to this socket and sends to the server its build targets. It exits once it receives the server reply.
  • Otherwise, it creates a server that waits for build requests. It also creates a pseudo-client that requests the targets passed on the command line.

Definition at line 3053 of file remake.cpp.

3054 {
3055  std::string remakefile;
3056  string_list targets;
3057  bool literal_targets = false;
3058  bool indirect_targets = false;
3059 
3060  // Parse command-line arguments.
3061  for (int i = 1; i < argc; ++i)
3062  {
3063  std::string arg = argv[i];
3064  if (arg.empty()) usage(EXIT_FAILURE);
3065  if (literal_targets) goto new_target;
3066  if (arg == "-h" || arg == "--help") usage(EXIT_SUCCESS);
3067  if (arg == "-d")
3068  if (echo_scripts) debug.active = true;
3069  else echo_scripts = true;
3070  else if (arg == "-k" || arg =="--keep-going")
3071  keep_going = true;
3072  else if (arg == "-s" || arg == "--silent" || arg == "--quiet")
3073  show_targets = false;
3074  else if (arg == "-r")
3075  indirect_targets = true;
3076  else if (arg == "-B" || arg == "--always-make")
3077  obsolete_targets = true;
3078  else if (arg == "-f")
3079  {
3080  if (++i == argc) usage(EXIT_FAILURE);
3081  remakefile = argv[i];
3082  }
3083  else if (arg == "--")
3084  literal_targets = true;
3085  else if (arg.compare(0, 2, "-j") == 0)
3086  max_active_jobs = atoi(arg.c_str() + 2);
3087  else if (arg.compare(0, 7, "--jobs=") == 0)
3088  max_active_jobs = atoi(arg.c_str() + 7);
3089  else
3090  {
3091  if (arg[0] == '-') usage(EXIT_FAILURE);
3092  if (arg.find('=') != std::string::npos)
3093  {
3094  std::istringstream in(arg);
3095  std::string name = read_word(in);
3096  if (name.empty() || !expect_token(in, Equal)) usage(EXIT_FAILURE);
3097  read_words(in, variables[name]);
3098  continue;
3099  }
3100  new_target:
3101  targets.push_back(arg);
3102  DEBUG << "New target: " << arg << '\n';
3103  }
3104  }
3105 
3106  init_working_dir();
3108 
3109  if (indirect_targets)
3110  {
3111  load_dependencies(std::cin);
3112  string_list l;
3113  targets.swap(l);
3114  if (l.empty() && !dependencies.empty())
3115  {
3116  l.push_back(dependencies.begin()->second->targets.front());
3117  }
3118  for (string_list::const_iterator i = l.begin(),
3119  i_end = l.end(); i != i_end; ++i)
3120  {
3121  dependency_map::const_iterator j = dependencies.find(*i);
3122  if (j == dependencies.end()) continue;
3123  dependency_t const &dep = *j->second;
3124  for (string_set::const_iterator k = dep.deps.begin(),
3125  k_end = dep.deps.end(); k != k_end; ++k)
3126  {
3127  targets.push_back(normalize(*k, working_dir, working_dir));
3128  }
3129  }
3130  dependencies.clear();
3131  }
3132 
3133 #ifdef WINDOWS
3134  WSADATA wsaData;
3135  if (WSAStartup(MAKEWORD(2,2), &wsaData))
3136  {
3137  std::cerr << "Unexpected failure while initializing Windows Socket" << std::endl;
3138  return 1;
3139  }
3140 #endif
3141 
3142  // Run as client if REMAKE_SOCKET is present in the environment.
3143  if (char *sn = getenv("REMAKE_SOCKET")) client_mode(sn, targets);
3144 
3145  // Otherwise run as server.
3146  if (remakefile.empty())
3147  {
3148  remakefile = "Remakefile";
3149  init_prefix_dir();
3150  }
3152  server_mode(remakefile, targets);
3153 }
static void client_mode(char *socket_name, string_list const &targets)
Definition: remake.cpp:2934
static void load_dependencies(std::istream &in)
Definition: remake.cpp:1439
static int expect_token(std::istream &in, int mask)
Definition: remake.cpp:1076
static std::string read_word(std::istream &in, bool detect_equal=true)
Definition: remake.cpp:1122
@ Equal
Definition: remake.cpp:1062
static std::string normalize(std::string const &s, std::string const &w, std::string const &p)
Definition: remake.cpp:955
static void init_working_dir()
Definition: remake.cpp:877
static void init_prefix_dir()
Definition: remake.cpp:899
static void normalize_list(string_list &l, std::string const &w, std::string const &p)
Definition: remake.cpp:1006
static void server_mode(std::string const &remakefile, string_list const &targets)
Definition: remake.cpp:2886
static bool read_words(input_generator &in, string_list &res)
Definition: remake.cpp:1288
static void usage(int exit_status)
Definition: remake.cpp:3026
static bool keep_going
Definition: remake.cpp:667
static int max_active_jobs
Definition: remake.cpp:661
std::list< std::string > string_list
Definition: remake.cpp:471
static std::string working_dir
Definition: remake.cpp:736
static dependency_map dependencies
Definition: remake.cpp:624
static variable_map variables
Definition: remake.cpp:619
static bool obsolete_targets
Definition: remake.cpp:756
static bool show_targets
Definition: remake.cpp:721
static bool echo_scripts
Definition: remake.cpp:726
#define DEBUG
Definition: remake.cpp:817
static std::string prefix_dir
Definition: remake.cpp:741
static log debug
Definition: remake.cpp:803
string_set deps
Definition: remake.cpp:514
bool active
Definition: remake.cpp:778

◆ usage()

static void usage ( int  exit_status)
static

Display usage and exit with exit_status.

Definition at line 3026 of file remake.cpp.

3027 {
3028  std::cerr << "Usage: remake [options] [target] ...\n"
3029  "Options\n"
3030  " -B, --always-make Unconditionally make all targets.\n"
3031  " -d Echo script commands.\n"
3032  " -d -d Print lots of debugging information.\n"
3033  " -f FILE Read FILE as Remakefile.\n"
3034  " -h, --help Print this message and exit.\n"
3035  " -j[N], --jobs=[N] Allow N jobs at once; infinite jobs with no arg.\n"
3036  " -k, --keep-going Keep going when some targets cannot be made.\n"
3037  " -r Look up targets from the dependencies on stdin.\n"
3038  " -s, --silent, --quiet Do not echo targets.\n";
3039  exit(exit_status);
3040 }

Referenced by main().