Add support for OCLint static checker.

Makefile.am

@@ -7,6 +7,14 @@ AM_DISTCHECK_CONFIGURE_FLAGS = --enable-compile-warnings=distcheck --enable-exam
 # non-Automake defines
 CPPCHECK_FLAGS = --enable=all --template=gcc --force # -j8 disables unused function checking.
 CLANG_SCAN_BUILD = scan-build
+BEAR = bear
+OCLINT_JCD = oclint-json-compilation-database
+OCLINT_OPTIONS = -enable-global-analysis -max-priority-2=1000 -max-priority-3=1000 \
+	-rc LONG_LINE=160 \
+	-rc LONG_VARIABLE_NAME=40 \
+	-rc SHORT_VARIABLE_NAME=1 \
+	-rc MINIMUM_CASES_IN_SWITCH=2
+
 .PHONY:	VERSION
 
 VERSION:
@@ -29,7 +37,7 @@ version.h:	VERSION
 	@rm -f version.h.new
 
 clean-local:
-	@rm -rf version.h VERSION cov-int mosh-coverity.txz
+	@rm -rf version.h VERSION cov-int mosh-coverity.txz compile_commands.json
 
 # Linters and static checkers, for development only.  Not included in
 # build dependencies, and outside of Automake processing.
@@ -47,6 +55,15 @@ cov-build:
 	cov-build --dir cov-int $(MAKE) check TESTS=
 	tar -caf mosh-coverity.txz cov-int
 
+# These two rules are for Bear + OCLint.
+# Don't *run* the tests, prediction-unicode.test generates arguments
+# with illegal UTF-8 that make Bear unhappy.
+compile_commands.json:
+	$(MAKE) clean
+	bear $(MAKE) check TESTS=
+oclint: compile_commands.json
+	$(OCLINT_JCD) -e src/protobufs -- $(OCLINT_OPTIONS)
+
 # Clang's scan-build static checker.
 scan-build:
 	$(MAKE) clean