Set the version to 0.67.

For now, version numbers are the fraction of GNU find features
supported.

Makefile

@@ -9,13 +9,19 @@
 # the COPYING file or http://www.wtfpl.net/ for more details.       #
 #####################################################################
 
+ifeq ($(wildcard .git),)
+VERSION := 0.67
+else
+VERSION := $(shell git describe --always)
+endif
+
 CC ?= gcc
 CFLAGS ?= -g -Wall
 LDFLAGS ?=
 DEPFLAGS ?= -MD -MP -MF $(@:.o=.d)
 RM ?= rm -f
 
-LOCAL_CPPFLAGS := -D_DEFAULT_SOURCE -D_GNU_SOURCE
+LOCAL_CPPFLAGS := -D_DEFAULT_SOURCE -D_GNU_SOURCE -DBFS_VERSION=\"$(VERSION)\"
 LOCAL_CFLAGS := -std=c99
 
 ALL_CPPFLAGS = $(LOCAL_CPPFLAGS) $(CPPFLAGS)

bfs.h

@@ -18,8 +18,13 @@
 #include <sys/types.h>
 #include <time.h>
 
-#define BFS_VERSION "0.0"
-#define BFS_HOMEPAGE "https://github.com/tavianator/bfs"
+#ifndef BFS_VERSION
+#	define BFS_VERSION "0.67"
+#endif
+
+#ifndef BFS_HOMEPAGE
+#	define BFS_HOMEPAGE "https://github.com/tavianator/bfs"
+#endif
 
 /**
  * A command line expression.