[PATCH] Better options in Makefile

[Pavel Roskin <proski@gnu.org>]

Hello!

This patch allows to enable collision check and subsecond time
resolution by uncommenting one line.  Also, the corresponding comments
have been improved.

Signed-off-by: Pavel Roskin <proski@gnu.org>

--- a/Makefile
+++ b/Makefile
@@ -1,13 +1,18 @@
-# -DCOLLISION_CHECK if you believe that SHA1's
+# Define COLLISION_CHECK if you believe that SHA1's
 # 1461501637330902918203684832716283019655932542976 hashes do not give you
-# enough guarantees about no collisions between objects ever hapenning.
-#
-# -DNSEC if you want git to care about sub-second file mtimes and ctimes.
-# Note that you need some new glibc (at least >2.2.4) for this, and it will
+# sufficient guarantee the no collisions between objects will ever happen.
+
+# DEFINES += -DCOLLISION_CHECK
+
+# Define NSEC if you want git to care about sub-second file mtimes and ctimes.
+# Note that you will need recent glibc (at least 2.2.4) for this, and it will
 # BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely randomly
 # break unless your underlying filesystem supports those sub-second times
 # (my ext3 doesn't).
-CFLAGS=-g -O3 -Wall
+
+# DEFINES += -DNSEC
+
+CFLAGS=-g -O3 -Wall $(DEFINES)
 
 CC=gcc
 AR=ar


-- 
Regards,
Pavel Roskin