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hyperrogue/mymake.cpp

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// HyperRogue: alternative build system
// This reads the file 'hyper.cpp' and compiles the cpp files it includes into separate object files, and then links them.
// Tested in Linux, should work in other systems with some changes.
// Options:
// -O2 -- optimize
// -O3 -- optimize
// -D... -- change compilation flags
// [file.cpp] -- add a module to the build (e.g. ./mymake rogueviz)
#include <string>
#include <fstream>
#include <iostream>
#include <thread>
#include <vector>
#include <sys/stat.h>
#include <unistd.h>
#include <chrono>
#include <future>
#include <functional>
using namespace std;
string opts;
string default_standard = " -std=c++11";
string standard = default_standard;
string preprocessor;
string compiler;
string linker;
string libs;
int batch_size = thread::hardware_concurrency() + 1;
void set_linux() {
preprocessor = "g++ -E";
compiler = "g++ -Wall -Wextra -Wno-maybe-uninitialized -Wno-unused-parameter -Wno-implicit-fallthrough -rdynamic -fdiagnostics-color=always -c";
linker = "g++ -rdynamic -o hyper";
opts = "-DFHS -DLINUX -I/usr/include/SDL";
libs = " savepng.o -lSDL -lSDL_ttf -lSDL_mixer -lSDL_gfx -lGLEW -lGL -lpng -rdynamic -lpthread -lz";
}
void set_mac() {
preprocessor = "g++ -E";
compiler = "g++ -march=native -W -Wall -Wextra -pedantic -Wno-unused-parameter -Wno-implicit-fallthrough -c";
linker = "g++ -o hyper";
opts = "-DMAC -I/usr/local/include";
libs = " savepng.o -L/usr/local/lib -framework AppKit -framework OpenGL -lSDL -lSDLMain -lSDL_gfx -lSDL_mixer -lSDL_ttf -lpng -lpthread -lz";
}
void set_win() {
preprocessor = "g++ -E";
compiler = "runbat bwin-g.bat -c";
linker = "runbat bwin-linker.bat";
opts = "-DFHS -DLINUX -I/usr/include/SDL";
libs = "";
standard = "";
}
void set_web() {
preprocessor = "/usr/lib/emscripten/em++ -E";
compiler = "/usr/lib/emscripten/em++ -c";
default_standard = standard = " -std=c++17";
opts = "-DISWEB=1";
linker =
"/usr/lib/emscripten/em++ -s USE_ZLIB=1 -s DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR=0 -s TOTAL_MEMORY=512MB "
"-s EXTRA_EXPORTED_RUNTIME_METHODS='[\"FS\",\"ccall\"]' "
"-s EXPORTED_FUNCTIONS=\"['_main', '_use_file']\" "
"-s DISABLE_EXCEPTION_CATCHING=0 -o mhyper.html";
libs = "";
}
vector<string> modules;
time_t get_file_time(const string s) {
struct stat attr;
if(stat(s.c_str(), &attr)) return 0;
return attr.st_mtime;
}
int optimized = 0;
string obj_dir = "mymake_files";
string setdir = "../";
int system(string cmdline) {
return system(cmdline.c_str());
}
bool file_exists(string fname) {
return access(fname.c_str(), F_OK) != -1;
}
int main(int argc, char **argv) {
#if defined(MAC)
set_mac();
#elif defined(WINDOWS)
set_win();
#else
set_linux();
#endif
for(string fname: {"Makefile.loc", "Makefile.simple", "Makefile"})
if(file_exists(fname)) {
system("make -f " + fname + " language-data.cpp autohdr.h savepng.o");
break;
}
for(int i=1; i<argc; i++) {
string s = argv[i];
if(s.substr(0, 2) == "-D") {
opts += " " + s;
obj_dir += "/";
setdir += "../";
for(char c: s)
if(!isalnum(c)) obj_dir += "_";
else obj_dir += c;
}
else if(s == "-win") {
set_win();
obj_dir += "/win";
setdir += "../";
}
else if(s == "-mac") {
set_mac();
obj_dir += "/mac";
setdir += "../";
}
else if(s == "-linux") {
set_linux();
obj_dir += "/linux";
setdir += "../";
}
else if(s == "-web") {
set_web();
modules.push_back("hyperweb");
obj_dir += "/web";
setdir += "../";
}
else if(s.substr(0, 2) == "-f") {
opts += " " + s;
obj_dir += "/";
setdir += "../";
for(char c: s)
if(!isalnum(c)) obj_dir += "_";
else obj_dir += c;
linker += " " + s;
}
else if(s == "-O2")
optimized = 2, compiler += " -O2", obj_dir += "/O2", setdir += "../";
else if(s == "-O3")
optimized = 3, compiler += " -O3", obj_dir += "/O3", setdir += "../";
else if(s.substr(0, 4) == "-std")
standard = s;
else if(s.substr(0, 2) == "-l")
linker += " " + s;
else if(s.substr(0, 2) == "-j")
batch_size = stoi(s.substr(2));
else if(s == "-I") {
opts += " " + s + " " + argv[i+1];
i++;
}
else if(s.substr(0, 2) == "-I")
opts += " " + s;
else if(s == "-rv") {
if(standard == default_standard) {
standard = "-std=c++17";
}
ifstream ifs("rogueviz/rogueviz-all.cpp");
string s;
while(getline(ifs, s)) {
if(s.substr(0, 10) == "#include \"") {
string t = s.substr(10);
t = t.substr(0, t.find(".cpp\""));
modules.push_back("rogueviz/" + t);
}
}
}
else {
if(s.size() >= 5 && s.substr(s.size() - 4) == ".cpp")
s = s.substr(0, s.size() - 4);
modules.push_back(s);
}
}
if(!optimized)
compiler += " -g3";
preprocessor += " " + standard;
compiler += " " + standard;
ifstream fs("hyper.cpp");
system("mkdir -p " + obj_dir);
ofstream fsm(obj_dir + "/hyper.cpp");
fsm << "#if REM\n#define INCLUDE(x)\n#endif\n";
string s;
while(getline(fs, s)) {
if(s.substr(0, 8) == "#include") {
string t;
bool in = false;
bool ext = false;
string iext = "";
for(char c: s) if(c == '"') in = !in; else if(!in) ; else if(c == '.') ext = !ext; else if(!ext) t += c; else iext += c;
if(iext == "h") { fsm << "#include \"" + setdir + "hyper.h\"\n"; continue; }
if(iext != "cpp") printf("unknown extension: %s\n", iext.c_str());
fsm << "INCLUDE(\"" << t << "\")\n";
continue;
}
fsm << s << "\n";
}
fsm.close();
printf("preprocessing...\n");
if(system(preprocessor + " " + opts + " "+obj_dir+"/hyper.cpp -o "+obj_dir+"/hyper.E")) { printf("preprocessing error\n"); exit(1); }
if(true) {
ifstream fs2(obj_dir+"/hyper.E");
while(getline(fs2, s)) {
if(s.substr(0, 7) == "INCLUDE") {
s = s.substr(9);
s = s.substr(0,s.size() - 2);
modules.push_back(s);
}
}
}
if(get_file_time(obj_dir + "/hyper.o") < get_file_time("hyper.cpp")) {
printf("compiling hyper...\n");
if(system(compiler + " -DREM " + opts + " " + obj_dir + "/hyper.cpp -c -o " + obj_dir + "/hyper.o")) { printf("error\n"); exit(1); }
}
string allobj = " " + obj_dir + "/hyper.o";
printf("compiling modules using batch size of %d:\n", batch_size);
int id = 0;
vector<pair<int, function<int(void)>>> tasks;
for(string m: modules) {
string src = m + ".cpp";
string m2 = m;
for(char& c: m2) if(c == '/') c = '_';
string obj = obj_dir + "/" + m2 + ".o";
time_t src_time = get_file_time(src);
if(!src_time) {
printf("file not found: %s\n", src.c_str());
exit(1);
}
time_t obj_time = get_file_time(obj);
if(src_time > obj_time) {
string cmdline = compiler + " " + opts + " " + src + " -o " + obj;
pair<int, function<int(void)>> task(id, [cmdline]() { return system(cmdline); });
tasks.push_back(task);
}
else {
printf("ok: %s\n", m.c_str());
}
allobj += " ";
allobj += obj;
id++;
}
chrono::milliseconds quantum(40);
vector<future<int>> workers(batch_size);
int tasks_amt = tasks.size();
int tasks_taken = 0, tasks_done = 0;
bool finished = tasks.empty();
while (!finished) {
for (auto & worker : workers) {
if (worker.valid()) {
if (worker.wait_for(chrono::seconds(0)) != future_status::ready) continue;
else {
int res = worker.get();
if (res) { printf("compilation error!\n"); exit(1); }
++tasks_done;
}
}
if (tasks_taken < tasks_amt) {
auto task = tasks[tasks_taken];
int mid = task.first;
function<int(void)> do_work = task.second;
printf("compiling %s... [%d/%d]\n", modules[mid].c_str(), tasks_taken+1, tasks_amt);
worker = async(launch::async, do_work);
++tasks_taken;
}
else if (tasks_done == tasks_amt) { finished = true; break; }
} this_thread::sleep_for(quantum); }
printf("linking...\n");
system(linker + allobj + libs);
return 0;
}
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