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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.
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// 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 <vector>
#include <sys/stat.h>
#include <unistd.h>
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using namespace std;
string opts = "-DFHS -DLINUX -DWHATEVER -I/usr/include/SDL";
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string standard = " -std=c++11";
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string preprocessor =
"g++ " + opts + " -E";
string compiler =
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"g++ " + opts + " -Wall -Wextra -Wno-maybe-uninitialized -Wno-missing-field-initializers -Wno-unused-parameter -Wno-implicit-fallthrough -rdynamic -fdiagnostics-color=always -c";
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string linker =
"g++ -rdynamic -o hyper";
string libs = " savepng-loc.o -lSDL -lSDL_ttf -lSDL_mixer -lSDL_gfx -lGLEW -lGL -lpng -rdynamic -lpthread";
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;
}
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int main(int argc, char **argv) {
for(string fname: {"Makefile.loc", "Makefile.simple", "Makefile"})
if(file_exists(fname))
system("make -f " + fname + " language-data.cpp autohdr.h savepng-loc.o");
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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(c == '=' || c == '-' || c == '/') obj_dir += "_";
else obj_dir += c;
}
else if(s == "-O2")
optimized = 2, compiler += " -O2", obj_dir += "/O2", setdir += "../";
else if(s == "-O3")
optimized = 3, compiler += " -O3", obj_dir += "/O3", setdir += "../";
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else if(s.substr(0, 4) == "-std")
standard = s;
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else modules.push_back(s);
}
if(!optimized)
compiler += " -g3";
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compiler += " " + standard;
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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);
fsm << "INCLUDE(___" << t << ")\n";
continue;
}
fsm << s << "\n";
}
fsm.close();
printf("preprocessing...\n");
if(system(preprocessor + " "+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(11);
s = s.substr(0,s.size() - 1);
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 " + obj_dir + "/hyper.cpp -c -o " + obj_dir + "/hyper.o")) { printf("error\n"); exit(1); }
}
string allobj = " " + obj_dir + "/hyper.o";
int id = 0;
for(string m: modules) {
id++;
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());
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exit(1);
}
time_t obj_time = get_file_time(obj);
if(src_time > obj_time) {
printf("compiling %s... [%d/%d]\n", m.c_str(), id, int(modules.size()));
if(system(compiler + " " + src + " -o " + obj)) { printf("error\n"); exit(1); }
}
else {
printf("ok: %s\n", m.c_str());
}
allobj += " ";
allobj += obj;
}
printf("linking...\n");
system(linker + allobj + libs);
return 0;
}