SWIFT-634 add Swift 5.1 variants to evg (#389)

Author: kmahar

.evergreen/config.yml

@@ -412,11 +412,10 @@ axes:
         display_name: "Swift 5.0"
         variables:
            SWIFT_VERSION: "5.0.3"
-      # TODO SWIFT-634: uncomment this
-      # - id: "5.1"
-      #   display_name: "Swift 5.1"
-      #   variables:
-      #      SWIFT_VERSION: "5.1"
+      - id: "5.1"
+        display_name: "Swift 5.1"
+        variables:
+           SWIFT_VERSION: "5.1.3"
 
   - id: ssl
     display_name: SSL

.evergreen/install-dependencies.sh

@@ -4,7 +4,7 @@ set -o errexit  # Exit the script with error if any of the commands fail
 
 # variables
 PROJECT_DIRECTORY=${PROJECT_DIRECTORY:-$PWD}
-SWIFT_VERSION=${SWIFT_VERSION:-4.2.4}
+SWIFT_VERSION=${SWIFT_VERSION:-5.0.3}
 INSTALL_DIR="${PROJECT_DIRECTORY}/opt"
 BUILD_DIR="${PROJECT_DIRECTORY}/libmongoc-build"
 EVG_DIR=$(dirname $0)

.evergreen/run-atlas-tests.sh

@@ -3,7 +3,7 @@ set -o errexit  # Exit the script with error if any of the commands fail
 
 # variables
 PROJECT_DIRECTORY=${PROJECT_DIRECTORY:-$PWD}
-SWIFT_VERSION=${SWIFT_VERSION:-5.0}
+SWIFT_VERSION=${SWIFT_VERSION:-5.0.3}
 INSTALL_DIR="${PROJECT_DIRECTORY}/opt"
 OS=$(uname -s | tr '[:upper:]' '[:lower:]')
 EXTRA_FLAGS="-Xlinker -rpath -Xlinker ${INSTALL_DIR}/lib"

.evergreen/run-tests.sh

@@ -5,7 +5,7 @@ set -o errexit  # Exit the script with error if any of the commands fail
 # variables
 PROJECT_DIRECTORY=${PROJECT_DIRECTORY:-$PWD}
 MONGODB_URI=${MONGODB_URI:-"NO_URI_PROVIDED"}
-SWIFT_VERSION=${SWIFT_VERSION:-5.0}
+SWIFT_VERSION=${SWIFT_VERSION:-5.0.3}
 INSTALL_DIR="${PROJECT_DIRECTORY}/opt"
 TOPOLOGY=${TOPOLOGY:-single}
 OS=$(uname -s | tr '[:upper:]' '[:lower:]')
@@ -23,6 +23,11 @@ export SWIFTENV_ROOT="${INSTALL_DIR}/swiftenv"
 export PATH="${SWIFTENV_ROOT}/bin:$PATH"
 eval "$(swiftenv init -)"
 
+# select the latest Xcode for Swift 5.1 support on MacOS
+if [ "$OS" == "darwin" ]; then
+    sudo xcode-select -s /Applications/Xcode11.3.app
+fi
+
 # switch swift version, and run tests
 swiftenv local $SWIFT_VERSION