Add test-submodules "make" target, use it in GitHub CI

.github/workflows/build-and-test.yml

@@ -40,6 +40,8 @@ jobs:
         run: |
           mkdir -p ${DYLAN}
           make install
+          ls -l ${DYLAN}/bin/
+          ldd ${DYLAN}/bin/deft
 
       - name: Exercise deft
         env:
@@ -55,3 +57,11 @@ jobs:
           ${exe} list
           ${exe} build abc-test-suite
           _build/bin/abc-test-suite
+
+      - name: Run test suite using submodules
+        env:
+          DYLAN_CATALOG: ext/pacman-catalog
+          DYLAN: dylan-root
+        run: |
+          mkdir -p ${DYLAN}
+          make test-submodules

Makefile

@@ -1,15 +1,10 @@
 # Low-tech Makefile to build and install deft.
 
 DYLAN		?= $${HOME}/dylan
-install_dir     = $(DYLAN)/install/deft
-install_bin     = $(install_dir)/bin
-install_lib     = $(install_dir)/lib
-link_target     = $(install_bin)/deft-app
-link_source     = $(DYLAN)/bin/dylan
 
 git_version := "$(shell git describe --tags --always --match 'v*')"
 
-.PHONY: build build-with-version clean install install-debug really-install remove-deft-artifacts test dist distclean
+.PHONY: build build-with-version clean install install-debug really-install remove-deft-artifacts test test-submodules dist distclean
 
 build: remove-deft-artifacts
 	OPEN_DYLAN_USER_REGISTRIES=${PWD}/registry dylan-compiler -build -unify deft-app
@@ -47,6 +42,12 @@ test: build
 	  dylan-compiler -build deft-test-suite \
 	  && DYLAN_CATALOG=ext/pacman-catalog _build/bin/deft-test-suite
 
+# Deft also needs to be buildable with submodules so that it can be built on new
+# platforms without having to manually install deps.
+test-submodules: distclean
+	dylan-compiler -build deft-test-suite \
+	  && DYLAN_CATALOG=ext/pacman-catalog _build/bin/deft-test-suite
+
 dist: distclean install
 
 # Sometimes I use deft to develop deft, so this makes sure to clean
@@ -58,7 +59,6 @@ remove-deft-artifacts:
 clean: remove-deft-artifacts
 	rm -rf _build
 	rm -rf _test
+	rm -rf *~
 
 distclean: clean
-	rm -rf $(install_dir)
-	rm -f $(link_source)