CI: Enable Swift 5.5 Linux builds (#23)

* CI: Enable Swift 5.5 Linux builds

* Update README.md

* Don't compile symbols for Linux that are not yet available (#22)

Co-authored-by: Stephen Celis <[email protected]>

Author: davdroman

.github/workflows/ci.yml

@@ -32,10 +32,15 @@ jobs:
   linux:
     name: Ubuntu
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        swift:
+          - 5.4
+          - 5.5
     steps:
       - uses: actions/checkout@v2
       - name: Run tests
-        run: make test-linux
+        run: make test-linux-${{ matrix.swift }}
 
   windows:
     name: Windows

Makefile

@@ -4,15 +4,22 @@ PLATFORM_MAC_CATALYST = macOS,variant=Mac Catalyst
 PLATFORM_TVOS = tvOS Simulator,name=Apple TV 4K (at 1080p)
 PLATFORM_WATCHOS = watchOS Simulator,name=Apple Watch Series 4 - 44mm
 
-test-all: test-linux test-swift test-platforms
+test-all: test-linux-all test-swift test-platforms
 
-test-linux:
-	docker run \
-		--rm \
-		-v "$(PWD):$(PWD)" \
-		-w "$(PWD)" \
-		swift:5.4 \
-		bash -c 'make test-swift'
+test-linux-all: test-linux-5.4 test-linux-5.5
+
+test-linux-5.4:
+	$(call test-linux,5.4)
+
+test-linux-5.5:
+	$(call test-linux,5.5)
+
+test-linux = docker run \
+	--rm \
+	-v "$(PWD):$(PWD)" \
+	-w "$(PWD)" \
+	swift:$(1) \
+	bash -c 'make test-swift'
 
 test-swift:
 	swift test \