Add a version number to Cycles standalone

Now Cycles has its own versioning, that is mainly interesting for external projects, which integrate the engine.

We start with version 1.7.0. Reasons for that:

* The engine is too mature for a 1.0 release.
* We assume that Cycles inside of Blender 2.61 was version 0.1. We count upwards in 0.1 steps, therefore Cycles inside of Blender 2.77 would be 1.7.

We use a common versioning scheme here, with 3 decimals for the major, minor and patch level.

At the moment cycles --version can be used to display the version, easy to parse for external projects. The info will be added to the UI later aswell.

1 files changed, 7 insertions, 1 deletions

diff --git a/intern/cycles/app/cycles_standalone.cpp b/intern/cycles/app/cycles_standalone.cpp
index b0d49d6ee72..951e8dca677 100644
--- a/intern/cycles/app/cycles_standalone.cpp
+++ b/intern/cycles/app/cycles_standalone.cpp
@@ -32,6 +32,7 @@
 #include "util_string.h"
 #include "util_time.h"
 #include "util_transform.h"
+#include "util_version.h"
 
 #ifdef WITH_CYCLES_STANDALONE_GUI
 #include "util_view.h"
@@ -358,7 +359,7 @@ static void options_parse(int argc, const char **argv)
 
 	/* parse options */
 	ArgParse ap;
-	bool help = false, debug = false;
+	bool help = false, debug = false, version = false;
 	int verbosity = 1;
 
 	ap.options ("Usage: cycles [options] file.xml",
@@ -380,6 +381,7 @@ static void options_parse(int argc, const char **argv)
 		"--verbose %d", &verbosity, "Set verbosity of the logger",
 #endif
 		"--help", &help, "Print help message",
+		"--version", &version, "Print version number",
 		NULL);
 
 	if(ap.parse(argc, argv) < 0) {
@@ -406,6 +408,10 @@ static void options_parse(int argc, const char **argv)
 
 		exit(EXIT_SUCCESS);
 	}
+	else if(version) {
+		printf("%s\n", cycles_version_number().c_str());
+		exit(EXIT_SUCCESS);
+	}
 	else if(help || options.filepath == "") {
 		ap.usage();
 		exit(EXIT_SUCCESS);