diff --git a/.eslintignore b/.eslintignore
new file mode 100644
index 0000000..9c595a6
--- /dev/null
+++ b/.eslintignore
@@ -0,0 +1 @@
+temp
diff --git a/lib/build.js b/lib/build.js
index f8f1fe4..ff534d5 100644
--- a/lib/build.js
+++ b/lib/build.js
@@ -1,4 +1,4 @@
-import { arch, platform, targets } from './system.js';
+import { platform, targets } from './system.js';
 import chipo from 'child-process-promise';
 import chalk from 'chalk';
 import { localPath } from './places.js';
@@ -10,6 +10,7 @@ import { version } from '../package.json';
 
 const buildPath = path.resolve(__dirname, '../temp');
 const patchesPath = path.resolve(__dirname, '../patches');
+const windows = platform === 'win32';
 
 async function main () {
   for (const nodeVersion in patchesJson) {
@@ -25,7 +26,29 @@ async function main () {
         [ 'reset', '--hard', nodeVersion ],
         { stdio: 'inherit', cwd: buildPath + '/node' });
 
-      // const patches = patchesJson[nodeVersion];
+      const patches = patchesJson[nodeVersion];
+      for (const patch of patches) {
+        console.log(`> ${chalk.yellow('Applying patch')} ${patch}`);
+        const patchPath = path.join(patchesPath, patch);
+        await chipo.spawn('patch',
+          [ '-p1', '-i', patchPath ],
+          { stdio: 'inherit', cwd: buildPath + '/node' });
+
+        const args = [];
+        if (windows) {
+          throw new Error('Not implemented TODO');
+        } else {
+          const cpu = { x86: 'ia32', x64: 'x64',
+            armv6: 'arm', armv7: 'arm' }[target];
+          args.push('--dest-cpu', cpu);
+          await chipo.spawn('./configure', args,
+            { stdio: 'inherit', cwd: buildPath + '/node' });
+          await chipo.spawn('make',
+            { stdio: 'inherit', cwd: buildPath + '/node' });
+        }
+
+        // TODO place to ~/.pkg-cache
+      }
     }
   }
 }
diff --git a/lib/system.js b/lib/system.js
index ec3cdc5..9484551 100644
--- a/lib/system.js
+++ b/lib/system.js
@@ -23,7 +23,7 @@ function getArch () {
 
 function getTargets () {
   // TODO x64, x86 from 'x64'?
-  return getArch();
+  return [ getArch() ];
 }
 
 export const abi = getAbi();