Annotation For Makefile

Origin for each line in Makefile from check-in f1d16a3958:

511419642c 2019-09-16        rkeene: CPPFLAGS := -I. -DUSE_TCL_STUBS=1 -DXVFS_DEBUG $(XVFS_ADD_CPPFLAGS)
77d5262842 2019-09-16        rkeene: CFLAGS   := -fPIC -g3 -ggdb3 -Wall $(XVFS_ADD_CFLAGS)
77d5262842 2019-09-16        rkeene: LDFLAGS  := $(XVFS_ADD_LDFLAGS)
9bcf758fef 2019-05-08        rkeene: LIBS     := -ltclstub8.6
5583d77f1c 2019-09-14        rkeene: TCLSH    := tclsh
e5b6962adf 2019-05-02        rkeene: 
511419642c 2019-09-16        rkeene: all: example.so example-client-server.so
0a9369ff13 2019-05-02        rkeene: 
e90770a5a7 2019-05-02        rkeene: example.c: $(shell find example -type f) $(shell find lib -type f) xvfs.c.rvt xvfs-create Makefile
0a9369ff13 2019-05-02        rkeene: 	./xvfs-create --directory example --name example > example.c.new
0a9369ff13 2019-05-02        rkeene: 	mv example.c.new example.c
0a9369ff13 2019-05-02        rkeene: 
b8cca3a6b4 2019-05-08        rkeene: example.o: example.c xvfs-core.h xvfs-core.c Makefile
511419642c 2019-09-16        rkeene: 	$(CC) $(CPPFLAGS) -DXVFS_MODE_FLEXIBLE $(CFLAGS) -o example.o -c example.c
b8cca3a6b4 2019-05-08        rkeene: 
b8cca3a6b4 2019-05-08        rkeene: example.so: example.o Makefile
b8cca3a6b4 2019-05-08        rkeene: 	$(CC) $(CFLAGS) $(LDFLAGS) -shared -o example.so example.o $(LIBS)
b8cca3a6b4 2019-05-08        rkeene: 
511419642c 2019-09-16        rkeene: example-client.o: example.c xvfs-core.h Makefile
f1d16a3958 2019-09-17        rkeene: 	$(CC) $(CPPFLAGS) -DXVFS_MODE_FLEXIBLE $(CFLAGS) -o example-client.o -c example.c
511419642c 2019-09-16        rkeene: 
511419642c 2019-09-16        rkeene: example-server.o: xvfs-core.h xvfs-core.c Makefile
511419642c 2019-09-16        rkeene: 	$(CC) $(CPPFLAGS) -DXVFS_MODE_SERVER $(CFLAGS) -o example-server.o -c xvfs-core.c
511419642c 2019-09-16        rkeene: 
511419642c 2019-09-16        rkeene: example-client-server.so: example-client.o example-server.o Makefile
511419642c 2019-09-16        rkeene: 	$(CC) $(CFLAGS) $(LDFLAGS) -shared -o example-client-server.so example-client.o example-server.o $(LIBS)
511419642c 2019-09-16        rkeene: 
d80c88cee0 2019-09-16        rkeene: # xvfs-create-standalone is a standalone (i.e., no external dependencies
d80c88cee0 2019-09-16        rkeene: # like lib/minirivet, xvfs-core.c, etc) version of "xvfs-create"
511419642c 2019-09-16        rkeene: xvfs-create-standalone: $(shell find lib -type f) xvfs-create xvfs-core.c xvfs-core.h xvfs.c.rvt Makefile
d80c88cee0 2019-09-16        rkeene: 	rm -f xvfs-create-standalone.new xvfs-create-standalone
d80c88cee0 2019-09-16        rkeene: 	./xvfs-create --dump-tcl --remove-debug > xvfs-create-standalone.new
d80c88cee0 2019-09-16        rkeene: 	chmod +x xvfs-create-standalone.new
d80c88cee0 2019-09-16        rkeene: 	mv xvfs-create-standalone.new xvfs-create-standalone
d80c88cee0 2019-09-16        rkeene: 
511419642c 2019-09-16        rkeene: test: example.so example-client-server.so Makefile
5583d77f1c 2019-09-14        rkeene: 	rm -f __test__.tcl
511419642c 2019-09-16        rkeene: 	echo 'if {[catch { load $$::env(XVFS_SHARED_OBJECT) Xvfs_example; source //xvfs:/example/main.tcl }]} { puts stderr $$::errorInfo; exit 1 }; exit 0' > __test__.tcl
511419642c 2019-09-16        rkeene: 	XVFS_SHARED_OBJECT=./example.so $(GDB) $(TCLSH) __test__.tcl $(TCL_TEST_ARGS)
511419642c 2019-09-16        rkeene: 	XVFS_SHARED_OBJECT=./example-client-server.so $(GDB) $(TCLSH) __test__.tcl $(TCL_TEST_ARGS)
5583d77f1c 2019-09-14        rkeene: 	rm -f __test__.tcl
77d5262842 2019-09-16        rkeene: 
77d5262842 2019-09-16        rkeene: coverage:
77d5262842 2019-09-16        rkeene: 	$(MAKE) clean
77d5262842 2019-09-16        rkeene: 	$(MAKE) example.so XVFS_ADD_CFLAGS=-coverage XVFS_ADD_LDFLAGS=-coverage
10f67b2ced 2019-09-16        rkeene: 	$(MAKE) test XVFS_TEST_EXIT_ON_FAILURE=0
77d5262842 2019-09-16        rkeene: 	rm -f xvfs-test-coverage.info
77d5262842 2019-09-16        rkeene: 	lcov --capture --directory . --output-file xvfs-test-coverage.info
77d5262842 2019-09-16        rkeene: 	rm -rf xvfs-test-coverage
77d5262842 2019-09-16        rkeene: 	mkdir xvfs-test-coverage
77d5262842 2019-09-16        rkeene: 	genhtml xvfs-test-coverage.info --output-directory xvfs-test-coverage
77d5262842 2019-09-16        rkeene: 	rm -f xvfs-test-coverage.info
0a9369ff13 2019-05-02        rkeene: 
0a9369ff13 2019-05-02        rkeene: clean:
d80c88cee0 2019-09-16        rkeene: 	rm -f xvfs-create-standalone.new xvfs-create-standalone
aa32555a0a 2019-06-22        rkeene: 	rm -f example.c example.c.new
aa32555a0a 2019-06-22        rkeene: 	rm -f example.so example.o
511419642c 2019-09-16        rkeene: 	rm -f example-client.o example-server.o example-client-server.so
77d5262842 2019-09-16        rkeene: 	rm -f example.gcda example.gcno
5583d77f1c 2019-09-14        rkeene: 	rm -f __test__.tcl
77d5262842 2019-09-16        rkeene: 	rm -f xvfs-test-coverage.info
77d5262842 2019-09-16        rkeene: 	rm -rf xvfs-test-coverage
0a9369ff13 2019-05-02        rkeene: 
0a9369ff13 2019-05-02        rkeene: distclean: clean
0a9369ff13 2019-05-02        rkeene: 
77d5262842 2019-09-16        rkeene: .PHONY: all clean distclean test coverage