Add options to limit non-PHONY target prefixes

To help catch writing into the source directory, allow the build to
specify a list of valid prefixes that non-PHONY targets may have.

Change-Id: I90c9eb384557030a7635d8a2715aaba37bef87bf

1 files changed, 49 insertions, 0 deletions

diff --git a/testcase/writable.sh b/testcase/writable.sh
new file mode 100644
index 0000000..457f4e3
--- /dev/null
+++ b/testcase/writable.sh
@@ -0,0 +1,49 @@
+#!/bin/bash
+#
+# Copyright 2018 Google Inc. All rights reserved
+#
+# 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.
+
+set -u
+
+mk="$@"
+
+cat <<EOF > Makefile
+test: out/foo.o
+test2:
+out/foo.o: foo.c foo.h test2
+	@echo "END"
+foo.c:
+	@exit 0
+foo.h: foo.c
+
+.PHONY: test test2
+EOF
+
+# TODO: test implicit outputs
+
+if echo "${mk}" | grep -qv "kati"; then
+  # Make doesn't support these warnings, so write the expected output.
+  echo 'Makefile:6: warning: writing to readonly directory: "foo.c"'
+  echo 'Makefile:7: warning: writing to readonly directory: "foo.h"'
+  echo 'END'
+else
+  ${mk} --writable=out/ 2>&1
+fi
+
+if echo "${mk}" | grep -qv "kati"; then
+  # Make doesn't support these warnings, so write the expected output.
+  echo 'Makefile:6: *** writing to readonly directory: "foo.c"'
+else
+  ${mk} --writable=out/ --werror_writable 2>&1
+fi