mmc-utils: Change version string to git hash

Since mmc-utils versioning has always been 0.1 and changes are not
made frequently and formal releases do not happen, packaged versions
are just pulled from git anyway, using the git hash for version is
probably the best idea for now.

Signed-off-by: Christian Loehle <cloehle@hyperstone.com>
Link: https://lore.kernel.org/r/28623fa7390242e9b003a44016c0235f@hyperstone.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Makefile

@@ -1,6 +1,7 @@
 CC ?= gcc
+GIT_VERSION := "$(shell git describe --abbrev=6 --always --tags)"
 AM_CFLAGS = -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2
-CFLAGS ?= -g -O2
+CFLAGS ?= -g -O2 -DVERSION=\"$(GIT_VERSION)\"
 objects = \
 	mmc.o \
 	mmc_cmds.o \

mmc.c

@@ -26,8 +26,6 @@
 
 #include "mmc_cmds.h"
 
-#define MMC_VERSION	"0.1"
-
 #define BASIC_HELP 0
 #define ADVANCED_HELP 1
 
@@ -319,7 +317,7 @@ static void help(char *np)
 
 	printf("\n\t%s help|--help|-h\n\t\tShow the help.\n",np);
 	printf("\n\t%s <cmd> --help\n\t\tShow detailed help for a command or subset of commands.\n",np);
-	printf("\n%s\n", MMC_VERSION);
+	printf("\n%s\n", VERSION);
 }
 
 static int split_command(char *cmd, char ***commands)
@@ -500,7 +498,7 @@ static int parse_args(int argc, char **argv,
 	}
 
 	if(helprequested){
-		printf("\n%s\n", MMC_VERSION);
+		printf("\n%s\n", VERSION);
 		return 0;
 	}