As tests are not really well integrated with autotools, the whole
'regress' folder is included.  The `git clean -xf regress` command is
used to remove stray files.

Also 'make distcheck' now runs tests, hence new `mkdir` calls.
---
 Makefile.am | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 2b17e07b4..e6c35a8c9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,7 +3,7 @@ SUBDIRS = compat libexec got tog gotadmin template gotwebd
 
 include $(top_builddir)/Makefile.common
 
-EXTRA_DIST = CHANGES CHANGELOG LICENCE util/got-portable-ver.sh
+EXTRA_DIST = CHANGES CHANGELOG LICENCE regress util/got-portable-ver.sh
 
 LDADD = $(LIBOBJS)
 if HOST_FREEBSD
@@ -30,6 +30,7 @@ tests: check postinstallcheck
 
 regress-cmdline:
 	(export PLATFORM=@PLATFORM@; 				\
+	mkdir -p $(top_builddir)/regress/cmdline		\
 	cd $(top_builddir)/regress/cmdline || exit $$?; 	\
 	./checkout.sh -q -r "$(GOT_TEST_ROOT)";			\
 	./update.sh -q -r "$(GOT_TEST_ROOT)";			\
@@ -63,6 +64,7 @@ regress-cmdline:
 	./cleanup.sh -q -r "$(GOT_TEST_ROOT)")
 
 regress-delta:
+	mkdir -p $(top_builddir)/regress/delta
 	$(CC) $(DEFS) $(AM_CFLAGS) $(AM_CPPFLAGS) \
 		-o $(top_builddir)/regress/delta/delta_test \
 		$(top_srcdir)/lib/bloom.c \
@@ -103,6 +105,7 @@ regress-delta:
 			$(top_builddir)/regress/delta/delta_test
 
 regress-deltify:
+	mkdir -p $(top_builddir)/regress/deltify
 	$(CC) $(DEFS) $(AM_CFLAGS) $(AM_CPPFLAGS) \
 		-o $(top_builddir)/regress/deltify/deltify_test \
 		$(top_srcdir)/lib/bloom.c \
@@ -143,6 +146,7 @@ regress-deltify:
 			$(top_builddir)/regress/deltify/deltify_test
 
 regress-fetch:
+	mkdir -p $(top_builddir)/regress/fetch
 	$(CC) $(DEFS) $(AM_CFLAGS) $(AM_CPPFLAGS) \
 		-o $(top_builddir)/regress/fetch/fetch_test \
 		$(top_srcdir)/lib/bloom.c \
@@ -185,6 +189,7 @@ regress-fetch:
 			$(top_builddir)/regress/fetch/fetch_test
 
 regress-idset:
+	mkdir -p $(top_builddir)/regress/idset
 	$(CC) $(DEFS) $(AM_CFLAGS) $(AM_CPPFLAGS) \
 		-o $(top_builddir)/regress/idset/idset_test \
 		$(top_srcdir)/lib/bloom.c \
@@ -227,6 +232,7 @@ regress-idset:
 			$(top_builddir)/regress/idset/idset_test
 
 regress-path:
+	mkdir -p $(top_builddir)/regress/path
 	$(CC) $(DEFS) $(AM_CFLAGS) $(AM_CPPFLAGS) \
 		-o $(top_builddir)/regress/path/path_test \
 		$(top_srcdir)/lib/bloom.c \
@@ -267,3 +273,6 @@ regress-path:
 		$(top_srcdir)/regress/path/path_test.c \
 		-L$(top_builddir)/compat -lopenbsd-compat $(LIBS) && \
 			$(top_builddir)/regress/path/path_test
+
+dist-hook:
+	-git clean -xf regress
-- 
2.39.2