diff --git a/CMakeLists.txt b/CMakeLists.txt
index b728232..48dbda7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,5 +7,5 @@ add_subdirectory("vendor/sol2")
 include_directories("include")
 include_directories("vendor/sol2/include")
 
-add_executable(grbc src/main.cc src/utils.cc src/file.cc src/target_exe.cc src/platform.cc src/ninja.cc src/generator.cc src/target_lib.cc src/package.cc)
+add_executable(grbc src/main.cc src/utils.cc src/file.cc src/target_exe.cc src/platform.cc src/ninja.cc src/generator.cc src/target_lib.cc src/package.cc src/ext.cc src/ext_pkg_config.cc)
 target_link_libraries(grbc sol2 lua)
\ No newline at end of file
diff --git a/HConfig b/HConfig
index e6a3a9d..5042e3f 100644
--- a/HConfig
+++ b/HConfig
@@ -1,6 +1,35 @@
 grbc_want_version("1.0")
 grbc_load_platform("platform.hcfg")
 
+local grbc_pkg_config_ext = grbc_library(LibraryConfig.new({
+    name = "libgrbc_pkg_config",
+    language_type = LanguageType.Cpp,
+    files = {
+        grbc_file("src/ext_pkg_config.cc")
+    },
+    lib_type = LibraryType.Shared,
+
+    requirements = {},
+    compile_flags = {},
+    linker_flags = {},
+
+    include_dirs = {
+        "include",
+        "vendor/sol2/include"
+    },
+
+    package_config = PackageConfig.new({
+        name = "libgrbc_pkg_config",
+        libraries = {},
+        include_dirs = {
+            grbc_file("include"),
+            grbc_file("vendor/sol2/include")
+        },
+        compile_flags = {},
+        linker_flags = {},
+    })
+}))
+
 local grbc_lib = grbc_library(LibraryConfig.new({
     name = "libgrbc",
     language_type = LanguageType.Cpp,
@@ -15,7 +44,7 @@ local grbc_lib = grbc_library(LibraryConfig.new({
         grbc_file("src/package.cc"),
         grbc_file("src/ext.cc")
     },
-    lib_type = LibraryType.Shared,
+    lib_type = LibraryType.Static,
 
     requirements = {},
     compile_flags = {},
@@ -51,7 +80,8 @@ local grbc_exe = grbc_executable(ExecutableConfig.new({
             linker_flags = "-llua -lm -ldl"
         }),
 
-        grbc_pkg("libgrbc")
+        grbc_pkg("libgrbc"),
+        grbc_pkg("libgrbc_pkg_config")
     },
     compile_flags = {
     },
diff --git a/build.ninja b/build.ninja
index e53a4c6..8712031 100644
--- a/build.ninja
+++ b/build.ninja
@@ -40,65 +40,74 @@ rule archive
   command = rm -f $out; ar crs $out $in
   description = Creating static library $out
 
+## Compile: src/ext_pkg_config.cc ##
+
+build $builddir/src/ext_pkg_config.o: cxx src/ext_pkg_config.cc
+   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+
+## Link: libgrbc_pkg_config.so ##
+
+build $builddir/libgrbc_pkg_config.so:  link_cxx $builddir/src/ext_pkg_config.o
+  p_linker_flags =  -shared -Lbuild -Wl,-rpath,build:. 
+  p_cflags =  
+
 ## Compile: src/file.cc ##
 
 build $builddir/src/file.o: cxx src/file.cc
-   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+   p_cflags = -Iinclude -Ivendor/sol2/include 
 
 ## Compile: src/ninja.cc ##
 
 build $builddir/src/ninja.o: cxx src/ninja.cc
-   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+   p_cflags = -Iinclude -Ivendor/sol2/include 
 
 ## Compile: src/platform.cc ##
 
 build $builddir/src/platform.o: cxx src/platform.cc
-   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+   p_cflags = -Iinclude -Ivendor/sol2/include 
 
 ## Compile: src/target_exe.cc ##
 
 build $builddir/src/target_exe.o: cxx src/target_exe.cc
-   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+   p_cflags = -Iinclude -Ivendor/sol2/include 
 
 ## Compile: src/utils.cc ##
 
 build $builddir/src/utils.o: cxx src/utils.cc
-   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+   p_cflags = -Iinclude -Ivendor/sol2/include 
 
 ## Compile: src/generator.cc ##
 
 build $builddir/src/generator.o: cxx src/generator.cc
-   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+   p_cflags = -Iinclude -Ivendor/sol2/include 
 
 ## Compile: src/target_lib.cc ##
 
 build $builddir/src/target_lib.o: cxx src/target_lib.cc
-   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+   p_cflags = -Iinclude -Ivendor/sol2/include 
 
 ## Compile: src/package.cc ##
 
 build $builddir/src/package.o: cxx src/package.cc
-   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+   p_cflags = -Iinclude -Ivendor/sol2/include 
 
 ## Compile: src/ext.cc ##
 
 build $builddir/src/ext.o: cxx src/ext.cc
-   p_cflags = -fPIC -Iinclude -Ivendor/sol2/include 
+   p_cflags = -Iinclude -Ivendor/sol2/include 
 
-## Link: libgrbc.so ##
+## Link: libgrbc.a ##
 
-build $builddir/libgrbc.so:  link_cxx $builddir/src/file.o $builddir/src/ninja.o $builddir/src/platform.o $builddir/src/target_exe.o $builddir/src/utils.o $builddir/src/generator.o $builddir/src/target_lib.o $builddir/src/package.o $builddir/src/ext.o
-  p_linker_flags =  -shared -Lbuild -Wl,-rpath,build:. 
-  p_cflags =  
+build $builddir/libgrbc.a: archive $builddir/src/file.o $builddir/src/ninja.o $builddir/src/platform.o $builddir/src/target_exe.o $builddir/src/utils.o $builddir/src/generator.o $builddir/src/target_lib.o $builddir/src/package.o $builddir/src/ext.o
 
 ## Compile: src/main.cc ##
 
 build $builddir/src/main.o: cxx src/main.cc
-   p_cflags =  -Iinclude -Ivendor/sol2/include  
+   p_cflags =  -Iinclude -Ivendor/sol2/include -Iinclude -Ivendor/sol2/include  
 
 ## Link: grbc ##
 
-build $builddir/grbc:  link_cxx $builddir/src/main.o | $builddir/libgrbc.so
-  p_linker_flags = -llua -lm -ldl build/libgrbc.so  -Lbuild -Wl,-rpath,build:. 
+build $builddir/grbc:  link_cxx $builddir/src/main.o | $builddir/libgrbc.a $builddir/libgrbc_pkg_config.so
+  p_linker_flags = -llua -lm -ldl build/libgrbc.a build/libgrbc_pkg_config.so  -Lbuild -Wl,-rpath,build:. 
   p_cflags =  
 
diff --git a/compile_commands.json b/compile_commands.json
index b0c89fa..570bd36 100644
--- a/compile_commands.json
+++ b/compile_commands.json
@@ -1,506 +1,74 @@
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-    "file": "CMakeFiles/grbc.dir",
-    "output": "cmake_object_order_depends_target_grbc"
+    "directory": "/home/interfiber/dev/grbc",
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+    "file": "src/file.cc",
+    "output": "build/src/file.o"
   },
   {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "/usr/lib64/ccache/g++  -I/home/interfiber/dev/grbc/include -isystem /home/interfiber/dev/grbc/vendor/sol2/include -O2 -g -DNDEBUG -MD -MT CMakeFiles/grbc.dir/src/main.cc.o -MF CMakeFiles/grbc.dir/src/main.cc.o.d -o CMakeFiles/grbc.dir/src/main.cc.o -c /home/interfiber/dev/grbc/src/main.cc",
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-    "output": "CMakeFiles/grbc.dir/src/main.cc.o"
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+    "command": "/usr/lib64/ccache/g++ -MMD -MT build/src/ninja.o -MF build/src/ninja.o.d -fPIC -Iinclude -Ivendor/sol2/include  -c src/ninja.cc -o build/src/ninja.o",
+    "file": "src/ninja.cc",
+    "output": "build/src/ninja.o"
   },
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "/usr/lib64/ccache/g++  -I/home/interfiber/dev/grbc/include -isystem /home/interfiber/dev/grbc/vendor/sol2/include -O2 -g -DNDEBUG -MD -MT CMakeFiles/grbc.dir/src/utils.cc.o -MF CMakeFiles/grbc.dir/src/utils.cc.o.d -o CMakeFiles/grbc.dir/src/utils.cc.o -c /home/interfiber/dev/grbc/src/utils.cc",
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+    "file": "src/platform.cc",
+    "output": "build/src/platform.o"
   },
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-    "directory": "/home/interfiber/dev/grbc/build",
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+    "file": "src/target_exe.cc",
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-    "command": "",
-    "file": "vendor/sol2/CMakeFiles/ContinuousCoverage",
-    "output": "vendor/sol2/ContinuousCoverage"
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-    "command": "",
-    "file": "vendor/sol2/CMakeFiles/ContinuousMemCheck",
-    "output": "vendor/sol2/ContinuousMemCheck"
-  },
-  {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/CMakeFiles/ContinuousSubmit",
-    "output": "vendor/sol2/ContinuousSubmit"
-  },
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/CMakeFiles/edit_cache.util",
-    "output": "vendor/sol2/edit_cache"
-  },
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/CMakeFiles/rebuild_cache.util",
-    "output": "vendor/sol2/rebuild_cache"
-  },
-  {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "cd /home/interfiber/dev/grbc/build/vendor/sol2 && /usr/bin/cmake -P cmake_install.cmake",
-    "file": "vendor/sol2/all",
-    "output": "vendor/sol2/CMakeFiles/install.util"
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-    "file": "vendor/sol2/CMakeFiles/install.util",
-    "output": "vendor/sol2/install"
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "cd /home/interfiber/dev/grbc/build/vendor/sol2 && /usr/bin/cmake -DCMAKE_INSTALL_LOCAL_ONLY=1 -P cmake_install.cmake",
-    "file": "vendor/sol2/all",
-    "output": "vendor/sol2/CMakeFiles/install/local.util"
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-    "file": "vendor/sol2/all",
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-    "command": "",
-    "file": "vendor/sol2/Continuous",
-    "output": "Continuous"
-  },
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/ContinuousBuild",
-    "output": "ContinuousBuild"
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-    "file": "vendor/sol2/ContinuousConfigure",
-    "output": "ContinuousConfigure"
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-    "command": "",
-    "file": "vendor/sol2/ContinuousCoverage",
-    "output": "ContinuousCoverage"
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/ContinuousMemCheck",
-    "output": "ContinuousMemCheck"
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-    "command": "",
-    "file": "vendor/sol2/ContinuousStart",
-    "output": "ContinuousStart"
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-    "command": "",
-    "file": "vendor/sol2/ContinuousSubmit",
-    "output": "ContinuousSubmit"
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-    "file": "vendor/sol2/ExperimentalUpdate",
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-    "output": "Nightly"
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-    "command": "",
-    "file": "vendor/sol2/NightlyBuild",
-    "output": "NightlyBuild"
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/NightlyConfigure",
-    "output": "NightlyConfigure"
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/NightlyCoverage",
-    "output": "NightlyCoverage"
-  },
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/NightlyMemCheck",
-    "output": "NightlyMemCheck"
-  },
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-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/NightlyMemoryCheck",
-    "output": "NightlyMemoryCheck"
-  },
-  {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/NightlyStart",
-    "output": "NightlyStart"
-  },
-  {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/NightlySubmit",
-    "output": "NightlySubmit"
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-  {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/NightlyTest",
-    "output": "NightlyTest"
-  },
-  {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "vendor/sol2/NightlyUpdate",
-    "output": "NightlyUpdate"
-  },
-  {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "",
-    "file": "grbc",
-    "output": "all"
-  },
-  {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "/usr/bin/cmake -P /home/interfiber/dev/grbc/build/CMakeFiles/VerifyGlobs.cmake",
-    "file": "/home/interfiber/dev/grbc/build/CMakeFiles/VerifyGlobs.cmake_force",
-    "output": "/home/interfiber/dev/grbc/build/CMakeFiles/cmake.verify_globs"
-  },
-  {
-    "directory": "/home/interfiber/dev/grbc/build",
-    "command": "/usr/bin/cmake --regenerate-during-build -S/home/interfiber/dev/grbc -B/home/interfiber/dev/grbc/build",
-    "file": "/home/interfiber/dev/grbc/build/CMakeFiles/cmake.verify_globs",
-    "output": "build.ninja"
+    "directory": "/home/interfiber/dev/grbc",
+    "command": "/usr/lib64/ccache/g++  -o build/grbc build/src/main.o -llua -lm -ldl build/libgrbc.so  -Lbuild -Wl,-rpath,build:. ",
+    "file": "build/src/main.o",
+    "output": "build/grbc"
   }
 ]
diff --git a/include/grbc/ext.h b/include/grbc/ext.h
index c10d95e..ed9968b 100644
--- a/include/grbc/ext.h
+++ b/include/grbc/ext.h
@@ -1,8 +1,13 @@
 #pragma once
+#include "sol/state.hpp"
 #include <string>
 
 #define GRBC_EXT_pkg_config_NAME "GRBC_EXT_pkg_config"
 
+typedef void (*EXT_HookInit)(sol::state &lua);
+
 struct Extension {
     std::string name;
+
+    EXT_HookInit hook_init = nullptr;
 };
\ No newline at end of file
diff --git a/include/grbc/ext_pkg_config.h b/include/grbc/ext_pkg_config.h
new file mode 100644
index 0000000..bdd1b53
--- /dev/null
+++ b/include/grbc/ext_pkg_config.h
@@ -0,0 +1,7 @@
+#pragma once
+#include "grbc/ext.h"
+
+/**
+ * Get the grbc pkg-config extension
+ */
+Extension grbc_pkg_config();
\ No newline at end of file
diff --git a/include/grbc/spec.h b/include/grbc/spec.h
index 2a8f1fe..73fede5 100644
--- a/include/grbc/spec.h
+++ b/include/grbc/spec.h
@@ -1,4 +1,5 @@
 #pragma once
+#include "grbc/ext.h"
 #include <sol/table.hpp>
 #include <sol/types.hpp>
 #include <string>
@@ -222,4 +223,8 @@ std::string grbc_get_lib_extension(LibraryType lib_type);
 
 Package grbc_bake_package_config(const PackageConfig &config);
 
-Package grbc_pkg(const std::string &package_name);
\ No newline at end of file
+Package grbc_pkg(const std::string &package_name);
+
+void grbc_ext(const std::string &extension_id);
+
+void grbc_register_ext(const std::string &extension_id, const Extension &ext);
\ No newline at end of file
diff --git a/src/ext.cc b/src/ext.cc
index 976374e..77a6b3c 100644
--- a/src/ext.cc
+++ b/src/ext.cc
@@ -1 +1,5 @@
-#include "grbc/ext.h"
\ No newline at end of file
+#include "grbc/ext.h"
+
+void grbc_register_ext(const std::string &extension_id, const Extension &ext) {}
+
+void grbc_ext(const std::string &extension_id) {}
\ No newline at end of file
diff --git a/src/ext_pkg_config.cc b/src/ext_pkg_config.cc
new file mode 100644
index 0000000..48c6977
--- /dev/null
+++ b/src/ext_pkg_config.cc
@@ -0,0 +1,17 @@
+#include "grbc/ext_pkg_config.h"
+#include "grbc/ext.h"
+#include "grbc/helpers.h"
+#include "sol/state.hpp"
+
+void grbc_pkg_config_init(sol::state &state) {
+    log_msg("pkg_config extension loaded!");
+}
+
+
+Extension grbc_pkg_config() {
+    Extension ext{};
+    ext.name = GRBC_EXT_pkg_config_NAME;
+    ext.hook_init = grbc_pkg_config_init;
+
+    return ext;
+}
\ No newline at end of file
diff --git a/src/main.cc b/src/main.cc
index 4f784d3..34d2cff 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -1,3 +1,4 @@
+#include "grbc/ext_pkg_config.h"
 #include "grbc/state.h"
 #define SOL_ALL_SAFETIES_ON 1
 
@@ -99,12 +100,17 @@ int main() {
   lua.set("grbc_get_lib_extension", grbc_get_lib_extension);
   lua.set("grbc_bake_package_config", grbc_bake_package_config);
   lua.set("grbc_pkg", grbc_pkg);
+  lua.set("grbc_ext", grbc_ext);
+  lua.set("grbc_register_ext", grbc_register_ext);
 
   // Load generators
 
   GState::get().generators.push_back(
       {.name = "ninja", .func = ninja_generator});
 
+  // Load default extensions
+  grbc_register_ext(GRBC_EXT_pkg_config_NAME, grbc_pkg_config());
+
   log_msg("loading HConfig...");
 
   lua.script_file("HConfig");