Simplify build

A few notes:

  - Do not use cmake.  It uses a different library name.
  - Skip all and use install target, which builds only the bare minimum
    that will be installed into $PREFIX.

Jenkinsfile

@@ -0,0 +1,36 @@
+pipeline {
+  agent {
+    docker {
+      image 'harmonyone/harmony-jenkins-agent:latest'
+    }
+
+  }
+  stages {
+    stage('Build & Install') {
+      steps {
+        sh '''
+          rm -rf destdir
+          install -d destdir/usr/local/include
+          install -d destdir/usr/local/lib
+          make PREFIX=`pwd`/destdir/usr/local install
+        '''
+      }
+    }
+    stage('Package') {
+      steps {
+        sh '''
+          find destdir/usr/local -depth | \\
+            sed -n \'s@^destdir/usr/local/@@p\' | \\
+            tr \'\\n\' \'\\0\' | \\
+            (cd destdir/usr/local && exec cpio -o0 -Hnewc -v) | \\
+            xz -9 > mcl.cpio.xz
+        '''
+      }
+    }
+    stage('Save Build') {
+      steps {
+        archiveArtifacts '**'
+      }
+    }
+  }
+}