some bug fixes

src/CompileStep.cc

 	}
 
 	BBVariables &vars = variables();
-	std::vector<std::string> flags;
 
 	auto pkgsIt = vars.find("pkgs");
 	if (pkgsIt != vars.end()) {
-		for (auto &flag: pkgsIt->second) {
-			flags.push_back(flag);
-		}
+		toolchain::getPkgConfigFlags(pkgsIt->second, flags_);
 	}
 
 	std::string cflagsName;
 	auto cflagsIt = vars.find(cflagsName);
 	if (cflagsIt != vars.end()) {
 		for (auto &flag: cflagsIt->second) {
-			flags.push_back(flag);
+			flags_.push_back(flag);
 		}
 	}
 

src/build.cc

 #include "BBParser.h"
 #include "CompileStep.h"
 #include "LinkStep.h"
+#include "logger.h"
 
 static std::string extension(const std::string &path) {
 	size_t idx = path.find_last_of('.');
 		const std::string &dir, const std::string &name,
 		const BBVariables &variables, std::vector<std::unique_ptr<DepNode>> &deps) {
 	std::string path = dir + "/" + name;
-	sys::FileInfo info = sys::fileInfo(path);
+	sys::FileInfo info;
+	try {
+		info = sys::fileInfo(path);
+	} catch (std::exception &ex) {
+		logger::log(ex.what());
+		return;
+	}
 
 	if (info.isDir) {
 		// May or may not need to copy variables

src/main.cc

 		return 0;
 	}
 
+	sys::mkdirp(outDir);
+
 	{
 		std::ofstream f(outDir + "/compile_commands.json");
 		compdb::Writer writer(f);