diff --git a/oi/OIGenerator.cpp b/oi/OIGenerator.cpp
index a31f63f3..d98e7b82 100644
--- a/oi/OIGenerator.cpp
+++ b/oi/OIGenerator.cpp
@@ -193,9 +193,8 @@ int OIGenerator::generate(fs::path& primaryObject, SymbolService& symbols) {
   OICompiler::Config compilerConfig{};
   compilerConfig.usePIC = pic;
 
-  auto features =
-      config::processConfigFiles(std::vector<fs::path>{configFilePath},
-                                 featuresMap, compilerConfig, generatorConfig);
+  auto features = config::processConfigFiles(configFilePaths, featuresMap,
+                                             compilerConfig, generatorConfig);
   if (!features) {
     LOG(ERROR) << "failed to process config file";
     return -1;
diff --git a/oi/OIGenerator.h b/oi/OIGenerator.h
index cc9a32ab..dd38384d 100644
--- a/oi/OIGenerator.h
+++ b/oi/OIGenerator.h
@@ -17,6 +17,7 @@
 #pragma once
 
 #include <filesystem>
+#include <vector>
 
 #include "oi/DrgnUtils.h"
 #include "oi/OICodeGen.h"
@@ -31,8 +32,8 @@ class OIGenerator {
   void setOutputPath(fs::path _outputPath) {
     outputPath = std::move(_outputPath);
   }
-  void setConfigFilePath(fs::path _configFilePath) {
-    configFilePath = std::move(_configFilePath);
+  void setConfigFilePaths(std::vector<fs::path> _configFilePaths) {
+    configFilePaths = std::move(_configFilePaths);
   }
   void setSourceFileDumpPath(fs::path _sourceFileDumpPath) {
     sourceFileDumpPath = std::move(_sourceFileDumpPath);
@@ -46,7 +47,7 @@ class OIGenerator {
 
  private:
   std::filesystem::path outputPath;
-  std::filesystem::path configFilePath;
+  std::vector<std::filesystem::path> configFilePaths;
   std::filesystem::path sourceFileDumpPath;
   bool failIfNothingGenerated = false;
   bool pic = false;
diff --git a/tools/OILGen.cpp b/tools/OILGen.cpp
index d2671ce6..6e84dfa8 100644
--- a/tools/OILGen.cpp
+++ b/tools/OILGen.cpp
@@ -20,6 +20,7 @@
 #include <cstdlib>
 #include <filesystem>
 #include <iostream>
+#include <vector>
 
 #include "oi/OICodeGen.h"
 #include "oi/OIGenerator.h"
@@ -61,7 +62,7 @@ int main(int argc, char* argv[]) {
   FLAGS_stderrthreshold = 0;
 
   fs::path outputPath = "a.o";
-  fs::path configFilePath = "/usr/local/share/oi/base.oid.toml";
+  std::vector<fs::path> configFilePaths;
   fs::path sourceFileDumpPath = "";
   bool exitCode = false;
   bool pic = false;
@@ -77,7 +78,7 @@ int main(int argc, char* argv[]) {
         outputPath = optarg;
         break;
       case 'c':
-        configFilePath = optarg;
+        configFilePaths.emplace_back(optarg);
         break;
       case 'd':
         google::LogToStderr();
@@ -114,7 +115,7 @@ int main(int argc, char* argv[]) {
   OIGenerator oigen;
 
   oigen.setOutputPath(std::move(outputPath));
-  oigen.setConfigFilePath(std::move(configFilePath));
+  oigen.setConfigFilePaths(std::move(configFilePaths));
   oigen.setSourceFileDumpPath(sourceFileDumpPath);
   oigen.setFailIfNothingGenerated(exitCode);
   oigen.setUsePIC(pic);