Clean up TEST_TOR_BINARY so test-stem can have better dependencies

Fix #18240.  This version of the bug first appeared in
0.2.8.2-alpha.  0.2.8.1-alpha and earlier had a different bug.

Based on a patch from cypherpunks.

Makefile.am

@@ -19,9 +19,9 @@ AM_CFLAGS = @TOR_SYSTEMD_CFLAGS@
 SHELL = @SHELL@
 
 if COVERAGE_ENABLED
-TESTING_TOR_BINARY="$(top_builddir)/src/or/tor-cov"
+TESTING_TOR_BINARY=$(top_builddir)/src/or/tor-cov$(EXEEXT)
 else
-TESTING_TOR_BINARY="$(top_builddir)/src/or/tor"
+TESTING_TOR_BINARY=$(top_builddir)/src/or/tor$(EXEEXT)
 endif
 
 include src/include.am
@@ -93,7 +93,7 @@ need-chutney-path:
 
 # Note that test-network requires a copy of Chutney in $CHUTNEY_PATH.
 # Chutney can be cloned from https://git.torproject.org/chutney.git .
-test-network: need-chutney-path all
+test-network: need-chutney-path $(TESTING_TOR_BINARY) src/tools/tor-gencert
 	$(top_srcdir)/src/test/test-network.sh $(TEST_NETWORK_FLAGS)
 
 # Run all available tests using automake's test-driver
@@ -101,7 +101,7 @@ test-network: need-chutney-path all
 # some IPv6 tests will fail without an IPv6 DNS server (see #16971 and #17011)
 # only run mixed tests if we have a tor-stable binary
 # see #17015 for autodetection of different tor versions
-test-network-all: need-chutney-path all test-driver
+test-network-all: need-chutney-path test-driver $(TESTING_TOR_BINARY) src/tools/tor-gencert
 	mkdir -p $(TEST_NETWORK_ALL_LOG_DIR)
 	@flavors="$(TEST_CHUTNEY_FLAVORS)"; \
 	if ping6 -q -o ::1 >/dev/null 2>&1; then \
@@ -134,11 +134,11 @@ need-stem-path:
 		exit 1; \
 	fi
 
-test-stem: need-stem-path all
-	@$(PYTHON) "$$STEM_SOURCE_DIR"/run_tests.py --tor $(TESTING_TOR_BINARY) --all --log notice --target RUN_ALL;
+test-stem: need-stem-path $(TESTING_TOR_BINARY)
+	@$(PYTHON) "$$STEM_SOURCE_DIR"/run_tests.py --tor "$(TESTING_TOR_BINARY)" --all --log notice --target RUN_ALL;
 
-test-stem-full: need-stem-path all
-	@$(PYTHON) "$$STEM_SOURCE_DIR"/run_tests.py --tor $(TESTING_TOR_BINARY) --all --log notice --target RUN_ALL,ONLINE -v;
+test-stem-full: need-stem-path $(TESTING_TOR_BINARY)
+	@$(PYTHON) "$$STEM_SOURCE_DIR"/run_tests.py --tor "$(TESTING_TOR_BINARY)" --all --log notice --target RUN_ALL,ONLINE -v;
 
 test-full: need-stem-path need-chutney-path check test-network test-stem
 

changes/bug18240

@@ -0,0 +1,5 @@
+  o Minor bugfixes (build):
+    - Make the test-stem and test-network targets depend only on the
+      tor binary to be tested. Previously, they depended on "make all".
+      Fixes bug 18240; bugfix on 0.2.8.2-alpha.
+      Based on a patch from "cypherpunks".