1 files changed, 47 insertions, 0 deletions
diff --git a/scripts/install_prereqs.sh b/scripts/install_prereqs.sh
new file mode 100755
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--- /dev/null
+++ b/scripts/install_prereqs.sh
@@ -0,0 +1,47 @@
+# Copyright 2018 Google
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Within Travis, installs prerequisites for a build.
+
+# Examines the following configured environment variables that should be
+# specified in an env: block
+#   - PROJECT - Firebase or Firestore
+#   - METHOD - xcodebuild or cmake; default is xcodebuild
+
+if [[ -z "$METHOD" ]]; then
+  METHOD="xcodebuild"
+fi
+
+case "$PROJECT-$METHOD" in
+  *-xcodebuild)
+    bundle install
+    gem install xcpretty
+    ;;
+
+  Firestore-cmake)
+    bundle install
+    # xcpretty is helpful for the intermediate step which builds FirebaseCore
+    # using xcodebuild.
+    gem install xcpretty
+    brew outdated cmake || brew upgrade cmake
+    brew outdated go || brew upgrade go # Somehow the build for Abseil requires this.
+    ;;
+
+  *)
+    echo "Unknown project-method combo" 1>&2
+    echo "  PROJECT=$PROJECT" 1>&2
+    echo "  METHOD=$METHOD" 1>&2
+    exit 1
+    ;;
+esac