diff --git a/.gitignore b/.gitignore
index 7852578e..d1705523 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 .idea
 spec/run.out*
-*.xcodeproj/project.xcworkspace
-*.xcodeproj/xcuserdata
+*.xcodeproj
+*.xcodeproj
diff --git a/tree_sitter.gyp b/tree_sitter.gyp
new file mode 100644
index 00000000..f77b4476
--- /dev/null
+++ b/tree_sitter.gyp
@@ -0,0 +1,56 @@
+{
+  'targets': [
+    {
+      'target_name': 'tree_sitter',
+      'type': 'static_library',
+      'include_dirs': [
+        'include',
+        'src/compiler',
+        'src/runtime',
+      ],
+      'sources': [
+        '<!@(find include src -name "*.h" -or -name "*.cpp")',
+      ],
+    },
+    {
+      'target_name': 'compiler_specs',
+      'type': 'executable',
+      'dependencies': ['tree_sitter'],
+      'include_dirs': [
+        'include',
+        'externals/bandit',
+        'src/compiler',
+      ],
+      'sources': [
+        '<!@(ls spec/*.h spec/*.cpp)',
+        '<!@(find spec/compiler -name "*.h" -or -name "*.cpp")',
+        '<!@(find examples/grammars -name "*.hpp")',
+      ],
+    },
+    {
+      'target_name': 'runtime_specs',
+      'type': 'executable',
+      'dependencies': ['tree_sitter'],
+      'include_dirs': [
+        'include',
+        'externals/bandit',
+        'src/runtime',
+
+        # TODO - make separate spec helpers for runtime and compiler specs
+        'src/compiler',
+      ],
+      'sources': [
+        '<!@(ls spec/*.h spec/*.cpp)',
+        '<!@(find spec/runtime -name "*.h" -or -name "*.cpp")',
+        '<!@(find examples/parsers -name "*.c")',
+      ],
+    },
+  ],
+  'target_defaults': {
+    'xcode_settings': {
+      'ALWAYS_SEARCH_USER_PATHS': 'NO',
+      'CLANG_CXX_LANGUAGE_STANDARD': 'c++0x',
+      'CLANG_CXX_LIBRARY': 'libc++',
+    },
+  },
+}
diff --git a/tree_sitter.xcodeproj/project.pbxproj b/tree_sitter.xcodeproj/project.pbxproj
deleted file mode 100644
index 197ef2e0..00000000
--- a/tree_sitter.xcodeproj/project.pbxproj
+++ /dev/null
@@ -1,994 +0,0 @@
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-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-		12FD40CE185EEB5E0041A84E /* Build configuration list for PBXNativeTarget "runtime_specs" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				12FD40CF185EEB5E0041A84E /* Debug */,
-				12FD40D0185EEB5E0041A84E /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-/* End XCConfigurationList section */
-	};
-	rootObject = 12E716FA181D010E0051A649 /* Project object */;
-}
diff --git a/tree_sitter.xcodeproj/xcshareddata/xcschemes/compiler_specs.xcscheme b/tree_sitter.xcodeproj/xcshareddata/xcschemes/compiler_specs.xcscheme
deleted file mode 100644
index 9ad6bf79..00000000
--- a/tree_sitter.xcodeproj/xcshareddata/xcschemes/compiler_specs.xcscheme
+++ /dev/null
@@ -1,93 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0500"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "12E71793181D02A80051A649"
-               BuildableName = "compiler_specs"
-               BlueprintName = "compiler_specs"
-               ReferencedContainer = "container:tree_sitter.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      buildConfiguration = "Debug">
-      <Testables>
-      </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "12E71793181D02A80051A649"
-            BuildableName = "compiler_specs"
-            BlueprintName = "compiler_specs"
-            ReferencedContainer = "container:tree_sitter.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-   </TestAction>
-   <LaunchAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Debug"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      allowLocationSimulation = "YES">
-      <BuildableProductRunnable>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "12E71793181D02A80051A649"
-            BuildableName = "compiler_specs"
-            BlueprintName = "compiler_specs"
-            ReferencedContainer = "container:tree_sitter.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-      <EnvironmentVariables>
-         <EnvironmentVariable
-            key = "TREESITTER_DIR"
-            value = "$(SRCROOT)"
-            isEnabled = "YES">
-         </EnvironmentVariable>
-      </EnvironmentVariables>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Release"
-      debugDocumentVersioning = "YES">
-      <BuildableProductRunnable>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "12E71793181D02A80051A649"
-            BuildableName = "compiler_specs"
-            BlueprintName = "compiler_specs"
-            ReferencedContainer = "container:tree_sitter.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>
diff --git a/tree_sitter.xcodeproj/xcshareddata/xcschemes/runtime_specs.xcscheme b/tree_sitter.xcodeproj/xcshareddata/xcschemes/runtime_specs.xcscheme
deleted file mode 100644
index 4ff61d86..00000000
--- a/tree_sitter.xcodeproj/xcshareddata/xcschemes/runtime_specs.xcscheme
+++ /dev/null
@@ -1,86 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0500"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "12FD40B1185EEB5E0041A84E"
-               BuildableName = "runtime_specs"
-               BlueprintName = "runtime_specs"
-               ReferencedContainer = "container:tree_sitter.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      buildConfiguration = "Debug">
-      <Testables>
-      </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "12FD40B1185EEB5E0041A84E"
-            BuildableName = "runtime_specs"
-            BlueprintName = "runtime_specs"
-            ReferencedContainer = "container:tree_sitter.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-   </TestAction>
-   <LaunchAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Debug"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      allowLocationSimulation = "YES">
-      <BuildableProductRunnable>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "12FD40B1185EEB5E0041A84E"
-            BuildableName = "runtime_specs"
-            BlueprintName = "runtime_specs"
-            ReferencedContainer = "container:tree_sitter.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Release"
-      debugDocumentVersioning = "YES">
-      <BuildableProductRunnable>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "12FD40B1185EEB5E0041A84E"
-            BuildableName = "runtime_specs"
-            BlueprintName = "runtime_specs"
-            ReferencedContainer = "container:tree_sitter.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>
diff --git a/tree_sitter.xcodeproj/xcshareddata/xcschemes/tree_sitter.xcscheme b/tree_sitter.xcodeproj/xcshareddata/xcschemes/tree_sitter.xcscheme
deleted file mode 100644
index ce14ada7..00000000
--- a/tree_sitter.xcodeproj/xcshareddata/xcschemes/tree_sitter.xcscheme
+++ /dev/null
@@ -1,59 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0500"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "123E84FC18C31596002BF4FB"
-               BuildableName = "libtree_sitter.a"
-               BlueprintName = "tree_sitter"
-               ReferencedContainer = "container:tree_sitter.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      buildConfiguration = "Debug">
-      <Testables>
-      </Testables>
-   </TestAction>
-   <LaunchAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Debug"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      allowLocationSimulation = "YES">
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Release"
-      debugDocumentVersioning = "YES">
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>