diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9ca46da5c1f08..6ece20e7139ad 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,8 +15,13 @@ jobs:
 
     steps:
     - uses: actions/checkout@v1
-    - name: Run a multi-line script
+    - name: Build Linux installable archive
       run: ./ci-linux.sh
+    - name: Upload Linux installable archive
+      uses: actions/upload-artifact@v1
+      with:
+        name: linux-installable
+        path: ../swiftwasm-linux.tar.gz
 
   macos_build:
     timeout-minutes: 0
@@ -24,5 +29,42 @@ jobs:
 
     steps:
     - uses: actions/checkout@v1
-    - name: Run a multi-line script
+    - name: Build macOS installable archive
       run: ./ci-mac.sh
+    - name: Upload macOS installable archive
+      uses: actions/upload-artifact@v1
+      with:
+        name: macos-installable
+        path: ../swiftwasm-mac.tar.gz
+
+  package:
+    name: Build SwiftWasm packages
+    needs:
+    - linux_build
+    - macos_build
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Download installable Linux archive
+        uses: actions/download-artifact@v1
+        with:
+          name: linux-installable
+      - name: Download installable macOS archive
+        uses: actions/download-artifact@v1
+        with:
+          name: macos-installable
+      - name: Build the packages
+        shell: bash
+        run: |
+          git clone https://github.com/swiftwasm/swiftwasm-package-sdk.git
+          cd swiftwasm-package-sdk
+          ./download-prebuilts.sh
+
+          cp ../linux-installable/swiftwasm-linux.tar.gz prebuilt/swiftwasm.tar.gz
+          cp ../macos-installable/swiftwasm-mac.tar.gz prebuilt/swiftwasm-mac.tar.gz
+          ./build-packages.sh
+
+          cd output
+          tar xf swiftwasm-sdk-linux.tar.xz
+
+          cd swiftwasm-sdk
+          ./swiftwasm example/hello.swift hello.wasm
diff --git a/build-linux.sh b/build-linux.sh
index 285a5b05a3c9c..30285c85a2dc9 100755
--- a/build-linux.sh
+++ b/build-linux.sh
@@ -16,7 +16,7 @@ export sourcedir=$PWD/..
   --install-destdir="$sourcedir/install" \
   --install-prefix="/opt/swiftwasm-sdk" \
   --install-swift \
-  --installable-package="$sourcedir/swiftwasm.tar.gz" \
+  --installable-package="$sourcedir/swiftwasm-linux.tar.gz" \
   --llvm-targets-to-build "X86;WebAssembly" \
   --stdlib-deployment-targets "wasm-wasm32" \
   --wasm-icu-data "todo-icu-data" \
diff --git a/stdlib/private/StdlibUnittest/SymbolLookup.swift b/stdlib/private/StdlibUnittest/SymbolLookup.swift
index 2e9c627487a4f..6967c11327e0e 100644
--- a/stdlib/private/StdlibUnittest/SymbolLookup.swift
+++ b/stdlib/private/StdlibUnittest/SymbolLookup.swift
@@ -12,7 +12,7 @@
 
 #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
   import Darwin
-#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
+#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku) || os(Wasm)
   import Glibc
 #elseif os(Windows)
   import MSVCRT
@@ -23,7 +23,7 @@
 
 #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
   let RTLD_DEFAULT = UnsafeMutableRawPointer(bitPattern: -2)
-#elseif os(Linux)
+#elseif os(Linux) || os(Wasm)
   let RTLD_DEFAULT = UnsafeMutableRawPointer(bitPattern: 0)
 #elseif os(Android)
   #if arch(arm) || arch(i386)
@@ -43,6 +43,8 @@ public func pointerToSwiftCoreSymbol(name: String) -> UnsafeMutableRawPointer? {
 #if os(Windows)
   return unsafeBitCast(GetProcAddress(hStdlibCore, name),
                        to: UnsafeMutableRawPointer?.self)
+#elseif os(Wasm)
+  fatalError("\(#function) is not supported on WebAssembly")
 #else
   return dlsym(RTLD_DEFAULT, name)
 #endif