Add travis config

.travis.yml

@@ -0,0 +1,7 @@
+language: go
+
+script:
+  - make install
+  # Either `make regenerate` does not change any files or it does, in which case we print the diff and fail.
+  - (make regenerate && git ls-files --modified --deleted --others --exclude-standard | diff /dev/null -) || (git add -A && git diff -u HEAD && false)
+  - make test

Make.protobuf

@@ -35,6 +35,5 @@
 #
 #	include $(GOROOT)/src/pkg/github.com/golang/protobuf/Make.protobuf
 
-%.pb.go:	%.proto
+%.pb.go: %.proto
 	protoc --go_out=. $<
-

Makefile

@@ -29,7 +29,6 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-
 all:	install
 
 install:

proto/Makefile

@@ -35,7 +35,6 @@ install:
 test: install generate-test-pbs
 	go test
 
-
 generate-test-pbs:
 	make install
 	make -C testdata

protoc-gen-go/descriptor/Makefile

@@ -32,11 +32,13 @@
 # Not stored here, but descriptor.proto is in https://github.com/google/protobuf/
 # at src/google/protobuf/descriptor.proto
 regenerate:
-	echo WARNING! THIS RULE IS PROBABLY NOT RIGHT FOR YOUR INSTALLATION
+	@echo WARNING! THIS RULE IS PROBABLY NOT RIGHT FOR YOUR INSTALLATION
+	# The below `.bak` is a dirty hack to work around an incompatability between
+	# GNU sed and BSD sed. See http://stackoverflow.com/questions/5694228
 	cd $(HOME)/src/protobuf/src && \
 	protoc --go_out=. ./google/protobuf/descriptor.proto && \
-	sed -i 's,^package google_protobuf,package descriptor,' google/protobuf/descriptor.pb.go && \
-	cp ./google/protobuf/descriptor.pb.go $(GOPATH)/src/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.pb.go
+	sed -i.bak 's,^package google_protobuf,package descriptor,' google/protobuf/descriptor.pb.go
+	cp $(HOME)/src/protobuf/src/google/protobuf/descriptor.pb.go descriptor.pb.go
 
 restore:
 	cp descriptor.pb.golden descriptor.pb.go