ADD: CLI calls clang++.

lib/Compiler.cpp

@@ -21,7 +21,7 @@ namespace wg
   {
   }
 
-  void Compiler::gen()
+  void Compiler::gen(std::filesystem::path obj)
   {
     auto target_triple = llvm::sys::getDefaultTargetTriple();
     llvm::InitializeAllTargetInfos();
@@ -53,7 +53,7 @@ namespace wg
     m_module->setDataLayout(target_machine->createDataLayout());
     m_module->setTargetTriple(target_triple);
 
-    auto filename = "output.o";
+    auto filename = obj.string();
     std::error_code ec;
 
     llvm::raw_fd_ostream dest(filename, ec, llvm::sys::fs::OF_None);
@@ -71,9 +71,6 @@ namespace wg
     pass.run(*m_module);
 
     dest.flush();
-    m_module->print(llvm::errs(), nullptr);
-
-
   }
 
   llvm::Value* Compiler::compile(std::shared_ptr<Node> node)

lib/Compiler.hpp

@@ -17,7 +17,7 @@ namespace wg
     explicit Compiler();
     virtual ~Compiler();
 
-    void gen();
+    void gen(std::filesystem::path obj);
 
     llvm::Value* compile(std::shared_ptr<Node> node);
   private:

src/main.cpp

@@ -1,22 +1,29 @@
 #include <iostream>
 #include <fstream>
-
+#include <getopt.h>
 #include <Lexer.hpp>
 #include <Parser.hpp>
 #include <Compiler.hpp>
 
-int main(int argc, char** argv)
+std::filesystem::path name_to_obj(std::string const& path)
 {
-  if (argc < 2)
-    {
-      return -1;
+  return std::filesystem::path(path).stem().string() + ".o";
 }
 
+void load(std::string const& path)
+{
   std::string source;
 
   // Get Sources
   {
-    std::ifstream file {argv[1]};
+    std::ifstream file {path};
+
+    if (!file)
+      {
+        std::cerr << "unknown file '"<< path <<"'" << std::endl;
+        exit(-1);
+      }
+
     std::string line;
 
     while (std::getline(file, line))
@@ -35,7 +42,70 @@ int main(int argc, char** argv)
 
   wg::Compiler compiler;
   compiler.compile(ast);
-  compiler.gen();
+  compiler.gen(name_to_obj(path));
+}
+
+int main(int argc, char** argv)
+{
+  std::filesystem::path output_path = "a.out";
+
+  while (true)
+    {
+      static struct option options[] = {
+        {"help", no_argument, 0, 'h'},
+        {"output", required_argument, 0, 'o'},
+        {0, 0, 0, 0}
+      };
+
+      int option_index = 0;
+
+      int c = getopt_long(argc, argv, "ho:",
+                          options, &option_index);
+      if (c == -1)
+        {
+          break;
+        }
+
+      switch (c)
+        {
+        case 'h': {
+          std::cout << "Usage: wongoc [OPTIONS] <sources>" << std::endl;
+          std::cout << "OPTIONS" << std::endl;
+
+          std::cout << "\t" << "-h, --help," <<
+            "\t" << "show this message" << std::endl;
+          std::cout << "\t" << "-o, --output," <<
+            "\t" << "set the output binary name" << std::endl;
+
+          exit(0);
+        } break;
+
+        case 'o': {
+          output_path = std::filesystem::path(optarg);
+        } break;
+
+        default: break;
+        }
+    }
+
+  if (optind < argc)
+    {
+      while (optind < argc)
+        {
+          load(argv[optind]);
+          auto objname = name_to_obj(argv[optind]).string();
+
+          std::stringstream ss;
+          ss << "clang++" << " -o " << output_path << " ";
+          ss << objname;
+
+          system(ss.str().c_str());
+
+          std::filesystem::remove(objname);
+
+          optind++;
+        }
+    }
 
   return 0;
 }