Enable builds for macos-next kokoro. (#9706)

This enables build logic on the "macos-next" flavor of Kokoro tests.

The current runners use Big Sur with Xcode 13.2.1. This build uses cmake to configure and drive the build through Xcode. Tests are run under ctest.

kokoro/macos-next/cpp/build.sh

@@ -1,36 +1,51 @@
-#!/bin/bash -ex
+#!/bin/bash -ex -o pipefail
 #
 # Build file to set up and run tests
 
-# NOTE: in order to avoid blocking anyone, this job always succeeds for now.
-exit 0
-
-# Set up artifact output location
-: ${KOKORO_ARTIFACTS_DIR:=/tmp/kokoro_artifacts}
+#
+# Set up logging output location
+#
+: ${KOKORO_ARTIFACTS_DIR:=/tmp/protobuf_test_logs}
 : ${BUILD_LOGDIR:=$KOKORO_ARTIFACTS_DIR/logs}
 mkdir -p ${BUILD_LOGDIR}
 
+
+#
 # Change to repo root
-cd $(dirname $0)/../../..
+#
+if [[ -h /tmpfs ]] && [[ ${PWD} == /tmpfs/src ]]; then
+  # Workaround for internal Kokoro bug: b/227401944
+  cd /Volumes/BuildData/tmpfs/src/github/protobuf
+else
+  cd $(dirname $0)/../../..
+fi
 
+#
 # Update submodules
+#
 git submodule update --init --recursive
 
-# Build in a separate directory
+#
+# Configure and build in a separate directory
+#
 mkdir -p cmake/build
 cd cmake/build
 
-# Print some basic info
-xcode-select --print-path
-xcodebuild -version
-xcrun --show-sdk-path
-
-# Build everything first
 cmake -G Xcode ../.. \
-  2>&1 | tee ${BUILD_LOGDIR}/00_configure_sponge_log.log
+  2>&1 | tee ${BUILD_LOGDIR}/01_configure.log
+
+cp CMakeFiles/CMake*.log ${BUILD_LOGDIR}
+
 cmake --build . --config Debug \
-  2>&1 | tee ${BUILD_LOGDIR}/01_build_sponge_log.log
+  2>&1 | tee ${BUILD_LOGDIR}/02_build.log
 
+#
 # Run tests
+#
 ctest -C Debug --verbose --quiet \
-  --output-log ${BUILD_LOGDIR}/02_test_sponge_log.log
+  --output-log ${BUILD_LOGDIR}/03_test.log
+
+#
+# Compress outputs
+#
+gzip ${BUILD_LOGDIR}/*.log

kokoro/macos-next/cpp/continuous.cfg

@@ -7,7 +7,9 @@ timeout_mins: 1440
 # Upload logs
 action: {
   define_artifacts: {
-    regex: "protobuf/cmake/build/**/*sponge_log.log"
-    regex: "protobuf/cmake/build/**/*sponge_log.xml"
+    regex: "**/*sponge_log.log"
+    regex: "**/*sponge_log.xml"
+    regex: "logs/*.log"
+    regex: "logs/*.log.gz"
   }
 }

kokoro/macos-next/cpp/presubmit.cfg

@@ -7,7 +7,9 @@ timeout_mins: 1440
 # Upload logs
 action: {
   define_artifacts: {
-    regex: "protobuf/cmake/build/**/*sponge_log.log"
-    regex: "protobuf/cmake/build/**/*sponge_log.xml"
+    regex: "**/*sponge_log.log"
+    regex: "**/*sponge_log.xml"
+    regex: "logs/*.log"
+    regex: "logs/*.log.gz"
   }
 }