introduce git-based versioning

MSCP_BUILD_VERSION (`git describe --tags --dirty --match "v*"`) is
passed through include/mscp_version.h.in and cmake.

When git is failed, use VERSION file instead (for building from
source tar balls that excludes .git).

1 files changed, 2 insertions, 8 deletions

diff --git a/src/main.c b/src/main.c
index 7035215..17d147b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -11,18 +11,12 @@
 #include <pthread.h>
 
 #include <mscp.h>
+#include <mscp_version.h>
 #include <util.h>
 
 
-#ifndef _VERSION /* passed through cmake */
-#define VERSION "(unknown)"
-#else
-#define VERSION _VERSION
-#endif
-
-
 void usage(bool print_help) {
-	printf("mscp v" VERSION ": copy files over multiple ssh connections\n"
+	printf("mscp " MSCP_BUILD_VERSION ": copy files over multiple ssh connections\n"
 	       "\n"
 	       "Usage: mscp [vqDHdNh] [-n nr_conns] [-m coremask] [-u max_startups]\n"
 	       "            [-s min_chunk_sz] [-S max_chunk_sz] [-a nr_ahead] [-b buf_sz]\n"