Add comments

src/main.cpp

@@ -57,6 +57,7 @@ struct CompileOutput {
     std::string obj_string;
 };
 
+/// @brief Compiles the contents from the given filename and returns output as strings
 std::optional<CompileOutput> compile(std::string_view in_filename) {
     std::string out{ read_file(in_filename) };
 
@@ -154,6 +155,7 @@ std::optional<CompileOutput> compile(std::string_view in_filename) {
     };
 }
 
+/// @brief Executes a given command and returns the output as std::string
 std::string exec(const char* cmd) {
     std::array<char, 128> buffer;
     std::string result;
@@ -168,7 +170,6 @@ std::string exec(const char* cmd) {
 }
 
 /// @brief Discovers the path of a given library using POSIX-util "whereis"
-/// @param libname 
 /// @return path to the library, empty string if nothing was found
 std::string find_lib(std::string libname) {
     std::string cmd = "whereis " + libname;