Optionally work without python
In some setups (notably server setups) you do not need that dependency.
Gracefully handle the absence of python when NO_PYTHON is defined.
Signed-off-by: Johannes E. Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/Makefile b/Makefile
index 1d3a0a4..c8ee4a4 100644
--- a/Makefile
+++ b/Makefile
@@ -58,6 +58,8 @@
# Define NO_ACCURATE_DIFF if your diff program at least sometimes misses
# a missing newline at the end of the file.
#
+# Define NO_PYTHON if you want to loose all benefits of the recursive merge.
+#
# Define COLLISION_CHECK below if you believe that SHA1's
# 1461501637330902918203684832716283019655932542976 hashes do not give you
# sufficient guarantee that no collisions between objects will ever happen.
@@ -442,6 +444,7 @@
sed -e '1s|#!.*/sh|#!$(call shq,$(SHELL_PATH))|' \
-e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
-e 's/@@NO_CURL@@/$(NO_CURL)/g' \
+ -e 's/@@NO_PYTHON@@/$(NO_PYTHON)/g' \
$@.sh >$@
chmod +x $@
@@ -521,6 +524,12 @@
### Testing rules
+# GNU make supports exporting all variables by "export" without parameters.
+# However, the environment gets quite big, and some programs have problems
+# with that.
+
+export NO_PYTHON
+
test: all
$(MAKE) -C t/ all
