Provide appcontroller with version information

Change-Id: Ibe6c8ddcde55a8055100dbceb146c62bd94f9539
Reviewed-by: Rainer Keller <[email protected]>

Author: Rainer-Keller

appcontroller.pro

@@ -15,3 +15,22 @@ android {
     target.path = $$[INSTALL_ROOT]/usr/bin
 }
 INSTALLS+=target
+
+# Find out git hash
+unix:system(which git):HAS_GIT=TRUE
+win32:system(where git.exe):HAS_GIT=TRUE
+contains(HAS_GIT, TRUE) {
+    GIT_HASH=$$system(git log -1 --format=%H)
+    !system(git diff-index --quiet HEAD): GIT_HASH="$$GIT_HASH-dirty"
+    GIT_VERSION=$$system(git describe --tags --exact-match)
+    isEmpty(GIT_VERSION) : GIT_VERSION="unknown"
+} else {
+    GIT_HASH="unknown"
+    GIT_VERSION="unknown"
+}
+
+isEmpty(GIT_VERSION) : error("No suitable tag found")
+isEmpty(GIT_HASH) : error("No hash available")
+
+DEFINES+="GIT_HASH=\\\"$$GIT_HASH\\\""
+DEFINES+="GIT_VERSION=\\\"$$GIT_VERSION\\\""

main.cpp

@@ -254,6 +254,9 @@ int main(int argc, char **argv)
                   return 1;
         } else if (arg == "--print-debug") {
             config.flags |= Config::PrintDebugMessages;
+        } else if (arg == "--version") {
+            printf("Appcontroller version: " GIT_VERSION "\nGit revision: " GIT_HASH "\n");
+            return 0;
         } else {
             args.prepend(arg);
             break;