Support building and testing multiple targets at once

Specifying multiple targets can be done by setting the
environment variable to a semi-colon delimited list of
targets.

Author: Bryant Mairs

ci/install.sh

@@ -12,23 +12,26 @@ main() {
 
     # Builds for iOS are done on OSX, but require the specific target to be
     # installed.
-    case $TARGET in
-        aarch64-apple-ios)
-            rustup target install aarch64-apple-ios
-            ;;
-        armv7-apple-ios)
-            rustup target install armv7-apple-ios
-            ;;
-        armv7s-apple-ios)
-            rustup target install armv7s-apple-ios
-            ;;
-        i386-apple-ios)
-            rustup target install i386-apple-ios
-            ;;
-        x86_64-apple-ios)
-            rustup target install x86_64-apple-ios
-            ;;
-    esac
+    IFS=';' read -ra TARGET_ARRAY <<< "$TARGET"
+    for t in "${TARGET_ARRAY[@]}"; do
+        case $t in
+            aarch64-apple-ios)
+                    rustup target install aarch64-apple-ios
+                    ;;
+            armv7-apple-ios)
+                    rustup target install armv7-apple-ios
+                    ;;
+            armv7s-apple-ios)
+                    rustup target install armv7s-apple-ios
+                    ;;
+            i386-apple-ios)
+                    rustup target install i386-apple-ios
+                    ;;
+            x86_64-apple-ios)
+                    rustup target install x86_64-apple-ios
+                    ;;
+        esac
+    done
 
     # This fetches latest stable release
     local tag=$(git ls-remote --tags --refs --exit-code https://github.com/japaric/cross \

ci/script.sh

@@ -8,17 +8,20 @@ main() {
         export RUSTFLAGS=--cfg=travis
     fi
 
-    # Build debug and release targets
-    cross build --target $TARGET
-    cross build --target $TARGET --release
+    IFS=';' read -ra TARGET_ARRAY <<< "$TARGET"
+    for t in "${TARGET_ARRAY[@]}"; do
+	# Build debug and release targets
+	cross build --target $t
+	cross build --target $t --release
 
-    if [ ! -z $DISABLE_TESTS ]; then
-        return
-    fi
+	if [ ! -z $DISABLE_TESTS ]; then
+	    continue
+	fi
 
-    # Run tests on debug and release targets.
-    cross test --target $TARGET
-    cross test --target $TARGET --release
+	# Run tests on debug and release targets.
+	cross test --target $t
+	cross test --target $t --release
+    done
 }
 
 # we don't run the "test phase" when doing deploys