Remove build date from banner for releases

In support for reproducible builds, see
https://wiki.debian.org/ReproducibleBuilds

Fixes Debian bug #834316.

Change-Id: Id81ec72a87bf6dd99abfd2a0ae074658111bc9a3
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3866
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>

src/Makefile.am

@@ -38,7 +38,7 @@ noinst_HEADERS = \
 	hello.h \
 	openocd.h
 
-libopenocd_la_CPPFLAGS = -DPKGBLDDATE=\"`date +%F-%R`\"
+libopenocd_la_CPPFLAGS =
 
 # banner output includes RELSTR appended to $VERSION from the configure script
 # guess-rev.sh returns either a repository version ID or "-snapshot"
@@ -48,6 +48,7 @@ libopenocd_la_CPPFLAGS += -DGITVERSION=\"\"
 else
 libopenocd_la_CPPFLAGS += -DRELSTR=\"`$(top_srcdir)/guess-rev.sh $(top_srcdir)`\"
 libopenocd_la_CPPFLAGS += -DGITVERSION=\"`cd $(top_srcdir) && git describe`\"
+libopenocd_la_CPPFLAGS += -DPKGBLDDATE=\"`date +%F-%R`\"
 endif
 
 # add default CPPFLAGS

src/openocd.c

@@ -45,8 +45,13 @@
 #include <strings.h>
 #endif
 
+#ifdef PKGBLDDATE
 #define OPENOCD_VERSION	\
 	"Open On-Chip Debugger " VERSION RELSTR " (" PKGBLDDATE ")"
+#else
+#define OPENOCD_VERSION	\
+	"Open On-Chip Debugger " VERSION RELSTR
+#endif
 
 static const char openocd_startup_tcl[] = {
 #include "startup_tcl.inc"