1 files changed, 35 insertions, 0 deletions
diff --git a/client/cpp/dotd.sh b/client/cpp/dotd.sh
new file mode 100755
index 0000000..989d928
--- /dev/null
+++ b/client/cpp/dotd.sh
@@ -0,0 +1,35 @@
+#!/bin/bash
+#
+# dotd.sh
+#
+# Generate .d Makefile fragments, so we can use #include statements in source
+# for dependency info.  Adapted from the GNU make manual:
+#
+# http://www.gnu.org/software/make/manual/html_node/Automatic-Prerequisites.html
+#
+# We are putting this in shell, so we just have 'sed in bash'.  Not an unholy
+# mix of 'sed in bash in Make'.
+
+set -o nounset
+set -o pipefail
+set -o errexit
+
+# Munge gcc -MM output into .d files.
+main() {
+  if [ ! -d _tmp ]; then mkdir _tmp; fi
+  local basename=$1
+  local dotd=$2  # .d output name
+  shift 2  # rest of args are gcc invocation
+
+  rm --verbose -f $dotd  # in case of failure?
+
+  # Execute the gcc -MM invocation.
+  #
+  # Change
+  #   rappor_sim.o: rappor.sim.cc
+  # to
+  #   _tmp/rappor_sim.o _tmp/rappor_sim.d : rappor.sim.cc
+  "$@" | sed "s|\($basename\).o|_tmp/\1.o _tmp/\1.d |" > $dotd
+}
+
+main "$@"