[PATCH 1/2] maint.mk: handle missing git with more grace

[Peter Rosin]

* top/maint.mk (no-submodule-changes, public-submodule-commit): Quietly
proceed if git is not present.

Copyright-paperwork-exempt: yes
Signed-off-by: Peter Rosin <address@hidden>
---
 top/maint.mk |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/top/maint.mk b/top/maint.mk
index ea44ece..8afac72 100644
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -1370,7 +1370,8 @@ endef
 
 .PHONY: no-submodule-changes
 no-submodule-changes:
-       $(AM_V_GEN)if test -d $(srcdir)/.git; then                      \
+       $(AM_V_GEN)if test -d $(srcdir)/.git                            \
+               && git --version >& /dev/null; then                     \
          diff=$$(cd $(srcdir) && git submodule -q foreach              \
                  git diff-index --name-only HEAD)                      \
            || exit 1;                                                  \
@@ -1388,7 +1389,8 @@ submodule-checks ?= no-submodule-changes 
public-submodule-commit
 # cannot be built from a fresh clone.
 .PHONY: public-submodule-commit
 public-submodule-commit:
-       $(AM_V_GEN)if test -d $(srcdir)/.git; then                      \
+       $(AM_V_GEN)if test -d $(srcdir)/.git                            \
+               && git --version >& /dev/null; then                     \
          cd $(srcdir) &&                                               \
          git submodule --quiet foreach test '$$(git rev-parse $$sha1)' \
              = '$$(git merge-base origin $$sha1)'                      \
-- 
1.7.9