ci: verify pkg-config files actually work (#30)

Change the CI builds to verify the pkg-config files we create actually
work. Some improvements in the `.*ignore` files.

1 files changed, 36 insertions, 0 deletions

diff --git a/ci/test-install/spanner/Makefile b/ci/test-install/spanner/Makefile
new file mode 100644
index 0000000000..74bf292ce6
--- /dev/null
+++ b/ci/test-install/spanner/Makefile
@@ -0,0 +1,36 @@
+# Copyright 2019 Google LLC
+#
+# 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.
+
+# A simple Makefile to test the `install` target.
+#
+# This is not intended to be a demonstration of how to write good Makefiles,
+# nor is it a general solution on how to build Makefiles for google-cloud-cpp.
+# It is simply a minimal file to test the installed pkg-config support files.
+
+# The CXX, CXXFLAGS and CXXLD variables are hard-coded. These values work for
+# our tests, but applications would typically make them configurable parameters.
+CXX=g++ -std=c++11
+CXXLD=$(CXX)
+
+all: main
+
+# Configuration variables to compile and link against the library.
+PROTOS     := googleapis_cpp_spanner_protos
+CXXFLAGS   := $(shell pkg-config $(PROTOS) --cflags)
+CXXLDFLAGS := $(shell pkg-config $(PROTOS) --libs-only-L)
+LIBS       := $(shell pkg-config $(PROTOS) --libs-only-l)
+
+# A target using the Google Cloud Storage C++ client library.
+main: main.cc
+	$(CXXLD) $(CXXFLAGS) $(CXXFLAGS) $(CXXLDFLAGS) -o $@ $^ $(LIBS)