# Define DEFAULT_HELP_FORMAT to "man", "info" or "html"
# (defaults to "man") if you want to have a different default when
# "git help" is called without a parameter specifying the format.
+#
+# Define TEST_GIT_INDEX_VERSION to 2, 3 or 4 to run the test suite
+# with a different indexfile format version. If it isn't set the index
+# file format used is index-v[23].
GIT-VERSION-FILE: FORCE
@$(SHELL_PATH) ./GIT-VERSION-GEN
ifdef GIT_PERF_MAKE_OPTS
@echo GIT_PERF_MAKE_OPTS=\''$(subst ','\'',$(subst ','\'',$(GIT_PERF_MAKE_OPTS)))'\' >>$@
endif
+ifdef TEST_GIT_INDEX_VERSION
+ @echo TEST_GIT_INDEX_VERSION=\''$(subst ','\'',$(subst ','\'',$(TEST_GIT_INDEX_VERSION)))'\' >>$@
+endif
### Detect Python interpreter path changes
ifndef NO_PYTHON
export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
export EDITOR
+if test -n "${TEST_GIT_INDEX_VERSION:+isset}"
+then
+ GIT_INDEX_VERSION="$TEST_GIT_INDEX_VERSION"
+ export GIT_INDEX_VERSION
+fi
+
# Add libc MALLOC and MALLOC_PERTURB test
# only if we are not executing the test with valgrind
if expr " $GIT_TEST_OPTS " : ".* --valgrind " >/dev/null ||