Adding in-process crash dumping library and crash uploader

src/platform/crash/Makefile

Index: src/platform/crash/Makefile
diff --git a/src/platform/crash/Makefile b/src/platform/crash/Makefile
index 714e1d0d993ad0c1a386671adb595afdc3c7b671..06679f91297a53e81cb81e6ee59c4566582697c1 100644
--- a/src/platform/crash/Makefile
+++ b/src/platform/crash/Makefile
@@ -3,20 +3,28 @@
 # found in the LICENSE file.
 
 CRASH_BIN = crash_reporter
+CRASH_LIB = libcrash_dumper.so
 CRASH_OBJS = system_logging.o user_collector.o
 TEST_OBJS = $(CRASH_OBJS) system_logging_mock.o
 TEST_BINS = user_collector_test
 
 LIBS = -lbase -lpthread -lgflags -lrt -lmetrics
+
 TEST_LIBS = $(LIBS) -lgtest -lgmock
-INCLUDE_DIRS = -I..
+INCLUDE_DIRS = -I.. -I$(SYSROOT)/usr/include/google-breakpad
 LIB_DIRS =
 
-all: $(CRASH_BIN)
+# We need -fPIC for linking objects into shared objects.
+CXXFLAGS += -fPIC -Wall -Werror
+
+all: $(CRASH_BIN) $(CRASH_LIB)
 
 $(CRASH_BIN): crash_reporter.o $(CRASH_OBJS)
 	$(CXX) $(CXXFLAGS) $(LIB_DIRS) $^ $(LIBS) -o $@
 
+$(CRASH_LIB): crash_dumper.o
+	$(CXX) -shared -lbreakpad_client $^ -o $@
+
 tests: $(TEST_BINS)
 
 user_collector_test: user_collector_test.o $(TEST_OBJS)
@@ -26,4 +34,4 @@ user_collector_test: user_collector_test.o $(TEST_OBJS)
 	$(CXX) $(CXXFLAGS) $(INCLUDE_DIRS) -c $< -o $@
 
 clean:
-	rm -rf *.o $(CRASH_BIN) $(TEST_BINS)
+	rm -rf *.o $(CRASH_BIN) $(TEST_BINS) $(CRASH_LIB)