Move the test for help in its own category

test/Makefile

@@ -71,13 +71,13 @@ build:
 
 .PHONY: core clean-core
 
-core: core-app core-upgrade
+core: core-app core-help core-upgrade
 
-clean-core: clean-core-app clean-core-upgrade
+clean-core: clean-core-app clean-core-help clean-core-upgrade
 
 # Core: Building applications.
 
-CORE_APP_CASES = asn1 error generate-erl generate-erl-include generate-erl-prepend help hrl hrl-recursive mib no-app no-makedep xrl xrl-include yrl yrl-include
+CORE_APP_CASES = asn1 error generate-erl generate-erl-include generate-erl-prepend hrl hrl-recursive mib no-app no-makedep xrl xrl-include yrl yrl-include
 CORE_APP_TARGETS = $(addprefix core-app-,$(CORE_APP_CASES))
 CORE_APP_CLEAN_TARGETS = $(addprefix clean-,$(CORE_APP_TARGETS))
 
@@ -486,16 +486,6 @@ core-app-generate-erl-prepend: build clean-core-app-generate-erl-prepend
 		[{module, M} = code:load_file(M) || M <- Mods], \
 		halt()"
 
-core-app-help: build clean-core-app-help
-
-	$i "Bootstrap a new OTP library named $(APP)"
-	$t mkdir $(APP)/
-	$t cp ../erlang.mk $(APP)/
-	$t $(MAKE) -C $(APP) -f erlang.mk bootstrap-lib $v
-
-	$i "Run 'make help' and check that it prints help"
-	$t test -n "`$(MAKE) -C $(APP) help` | grep Usage"
-
 core-app-hrl: build clean-core-app-hrl
 
 	$i "Bootstrap a new OTP library named $(APP)"
@@ -1332,6 +1322,21 @@ clean-core-app: $(CORE_APP_CLEAN_TARGETS)
 $(CORE_APP_CLEAN_TARGETS):
 	$t rm -rf $(APP_TO_CLEAN)/
 
+# Core: Help.
+
+core-help: build clean-core-help
+
+	$i "Bootstrap a new OTP library named $(APP)"
+	$t mkdir $(APP)/
+	$t cp ../erlang.mk $(APP)/
+	$t $(MAKE) -C $(APP) -f erlang.mk bootstrap-lib $v
+
+	$i "Run 'make help' and check that it prints help"
+	$t test -n "`$(MAKE) -C $(APP) help` | grep Usage"
+
+clean-core-help:
+	$t rm -rf $(APP_TO_CLEAN)/
+
 # Core: Erlang.mk upgrade.
 
 CORE_UPGRADE_CASES = alt-erlangmk-repo no-config custom-config renamed-config custom-build-dir