build: fix version.h creation

Previous code did not retrigger a relink when version.h changed since it
didn't use a waf task.

1 files changed, 8 insertions, 1 deletions

diff --git a/version.sh b/version.sh
index a3d753da44..a9dfb69620 100755
--- a/version.sh
+++ b/version.sh
@@ -11,7 +11,10 @@ for ac_option do
     extra="-$ac_arg"
     ;;
   --versionh=*)
-    version_h="$ac_arg"
+    version_h="$(pwd)/$ac_arg"
+    ;;
+  --cwd=*)
+    cwd="$ac_arg"
     ;;
   --print)
     print=yes
@@ -24,6 +27,10 @@ for ac_option do
   esac
 done
 
+if test "$cwd" ; then
+  cd "$cwd"
+fi
+
 # Extract revision number from file used by daily tarball snapshots
 # or from "git describe" output
 git_revision=$(cat snapshot_version 2> /dev/null)