Put git version in a file for between-release versioning.

.gitignore

@@ -32,6 +32,7 @@ aclocal.m4
 /rsync
 /stunnel-rsyncd.conf
 /shconfig
+/git-version.h
 /testdir
 /tests-dont-exist
 /testtmp

Makefile.in

@@ -99,7 +99,7 @@ rsync$(EXEEXT): $(OBJS)
 $(OBJS): $(HEADERS)
 $(CHECK_OBJS): $(HEADERS)
 tls.o xattrs.o: lib/sysxattrs.h
-options.o: latest-year.h help-rsync.h help-rsyncd.h
+options.o: latest-year.h help-rsync.h help-rsyncd.h git-version.h
 exclude.o: default-cvsignore.h
 loadparm.o: default-dont-compress.h daemon-parm.h
 
@@ -132,6 +132,12 @@ rounding.h: rounding.c rsync.h proto.h
 	fi
 	@rm -f rounding.out
 
+# While $(wildcard ...) is a GNU make idiom, at least other makes should just turn it into an
+# empty string (we need something that will vanish if we're not building a git checkout).
+# If you want an updated git version w/o GNU make, remove git-version.h after a pull.
+git-version.h: mkgitver $(wildcard $(srcdir)/.git/logs/HEAD)
+	$(srcdir)/mkgitver
+
 simd-checksum-x86_64.o: simd-checksum-x86_64.cpp
 	@$(srcdir)/cmdormsg disable-simd $(CXX) -I. $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $(srcdir)/simd-checksum-x86_64.cpp
 

mkgitver

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+srcdir=`dirname $0`
+
+if test -d "$srcdir/.git"; then
+    gitver=\"`git describe --tags`\" || exit 1
+else
+    gitver=RSYNC_VERSION
+fi
+echo "#define RSYNC_GITVER $gitver" >git-version.h

options.c

@@ -23,6 +23,7 @@
 #include "itypes.h"
 #include "ifuncs.h"
 #include "latest-year.h"
+#include "git-version.h"
 #include <popt.h>
 
 extern int module_id;
@@ -727,7 +728,7 @@ static void print_rsync_version(enum logcode f)
 	subprotocol = istring(".PR%d", SUBPROTOCOL_VERSION);
 #endif
 	rprintf(f, "%s  version %s  protocol version %d%s\n",
-		RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
+		RSYNC_NAME, RSYNC_GITVER, PROTOCOL_VERSION, subprotocol);
 
 	rprintf(f, "Copyright (C) 1996-" LATEST_YEAR " by Andrew Tridgell, Wayne Davison, and others.\n");
 	rprintf(f, "Web site: https://rsync.samba.org/\n");