Makefile: add option to build and test libgit-rs and libgit-rs-sys

Add libgitrs, libgitrs-sys, libgitrs-test, and libgitrs-sys-test targets
to their respective Makefiles so they can be built and tested without
having to run cargo build/test.

Add environment variable, INCLUDE_LIBGIT_RS, that when set,
automatically builds and tests libgit-rs and libgit-rs-sys when `make
all` is ran.

Signed-off-by: Calvin Wan <[email protected]>
Signed-off-by: Josh Steadmon <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: calvin-wan-google

Makefile

@@ -3870,6 +3870,22 @@ build-unit-tests: $(UNIT_TEST_PROGS)
 unit-tests: $(UNIT_TEST_PROGS) t/helper/test-tool$X
 	$(MAKE) -C t/ unit-tests
 
+.PHONY: libgitrs-sys
+libgitrs-sys:
+	$(QUIET)(\
+		cd contrib/libgit-rs/libgit-sys && \
+		cargo build \
+	)
+.PHONY: libgitrs
+libgitrs:
+	$(QUIET)(\
+		cd contrib/libgit-rs && \
+		cargo build \
+	)
+ifdef INCLUDE_LIBGIT_RS
+all:: libgitrs
+endif
+
 contrib/libgit-rs/libgit-sys/partial_symbol_export.o: contrib/libgit-rs/libgit-sys/public_symbol_export.o libgit.a reftable/libreftable.a xdiff/lib.a
 	$(LD) -r $^ -o $@
 

t/Makefile

@@ -169,3 +169,19 @@ perf:
 
 .PHONY: pre-clean $(T) aggregate-results clean valgrind perf \
 	check-chainlint clean-chainlint test-chainlint $(UNIT_TESTS)
+
+.PHONY: libgitrs-sys-test
+libgitrs-sys-test:
+	$(QUIET)(\
+		cd ../contrib/libgit-rs/libgit-sys && \
+		cargo test \
+	)
+.PHONY: libgitrs-test
+libgitrs-test:
+	$(QUIET)(\
+		cd ../contrib/libgit-rs && \
+		cargo test \
+	)
+ifdef INCLUDE_LIBGIT_RS
+all:: libgitrs-sys-test libgitrs-test
+endif