Split test targets further.

Splits test into file-tests, t-exec, unit and interop-tests and their
respective dependencies.  Should allow running any set individually
without having to build the other dependencies that are not needed
for that specific test.

Makefile.in

@@ -572,14 +572,14 @@ regress/misc/kexfuzz/kexfuzz$(EXEEXT): ${MISC_KEX_FUZZ_OBJS} libssh.a
 	$(LD) -o $@ $(LDFLAGS) $(MISC_KEX_FUZZ_OBJS) \
 	    -lssh -lopenbsd-compat -lssh -lopenbsd-compat $(LIBS)
 
-regress-binaries: $(LIBCOMPAT) \
+regress-binaries: regress-prep $(LIBCOMPAT) \
 	regress/modpipe$(EXEEXT) \
 	regress/setuid-allowed$(EXEEXT) \
 	regress/netcat$(EXEEXT) \
 	regress/check-perm$(EXEEXT) \
 	regress/mkdtemp$(EXEEXT)
 
-regress-unit-binaries: $(REGRESSLIBS) \
+regress-unit-binaries: regress-prep $(REGRESSLIBS) \
 	regress/unittests/sshbuf/test_sshbuf$(EXEEXT) \
 	regress/unittests/sshkey/test_sshkey$(EXEEXT) \
 	regress/unittests/bitmap/test_bitmap$(EXEEXT) \
@@ -590,9 +590,17 @@ regress-unit-binaries: $(REGRESSLIBS) \
 	regress/unittests/utf8/test_utf8$(EXEEXT) \
 	regress/misc/kexfuzz/kexfuzz$(EXEEXT)
 
-unit: regress-unit-binaries
+tests:	file-tests t-exec interop-tests unit
 
-tests interop-tests t-exec: unit regress-prep regress-binaries $(TARGETS)
+unit: regress-unit-binaries
+	BUILDDIR=`pwd`; \
+	cd $(srcdir)/regress || exit $$?; \
+	$(MAKE) \
+		.OBJDIR="$${BUILDDIR}/regress" \
+		.CURDIR="`pwd`" \
+		$@
+
+interop-tests t-exec file-tests: regress-prep regress-binaries $(TARGETS)
 	BUILDDIR=`pwd`; \
 	TEST_SSH_SCP="$${BUILDDIR}/scp"; \
 	TEST_SSH_SSH="$${BUILDDIR}/ssh"; \

regress/Makefile

@@ -1,7 +1,11 @@
 #	$OpenBSD: Makefile,v 1.103 2019/07/16 03:21:54 dtucker Exp $
 
-REGRESS_TARGETS=	unit t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 t12 t-exec
-tests:		prep $(REGRESS_TARGETS)
+tests:		prep file-tests t-exec unit
+
+REGRESS_TARGETS=	t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 t12
+
+# File based tests
+file-tests: $(REGRESS_TARGETS)
 
 # Interop tests are not run by default
 interop interop-tests: t-exec-interop