Allow KTX_VERSION_FULL to be overridden

cmake/version.cmake

@@ -108,8 +108,10 @@ function(generate_version _var )
     set(${_var} "${KTX_VERSION}" PARENT_SCOPE)
 endfunction()
 
-# Get latest tag
-git_describe_raw(KTX_VERSION_FULL --abbrev=0 --match v[0-9]*)
+# Get latest tag from git if not passed to cmake
+if(NOT KTX_VERSION_FULL)
+    git_describe_raw(KTX_VERSION_FULL --abbrev=0 --match v[0-9]*)
+endif()
 #message("KTX full version: ${KTX_VERSION_FULL}")
 
 # generate_version(TOKTX_VERSION tools/toktx)
@@ -174,15 +176,15 @@ function( create_version_header dest_path target )
         add_custom_command(
             OUTPUT ${version_h_output}
             # On Windows this command has to be invoked by a shell in order to work
-            COMMAND ${BASH_EXECUTABLE} -c "\"scripts/mkversion\" \"-o\" \"version.h\" \"${dest_path}\""
+            COMMAND ${BASH_EXECUTABLE} -c "\"scripts/mkversion\" \"-v\" \"${KTX_VERSION_FULL}\" \"-o\" \"version.h\" \"${dest_path}\""
             WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
             COMMENT "Generate ${version_h_output}"
             VERBATIM
         )
     else()
         add_custom_command(
             OUTPUT ${version_h_output}
-            COMMAND scripts/mkversion -o version.h ${dest_path}
+            COMMAND scripts/mkversion -v ${KTX_VERSION_FULL} -o version.h ${dest_path}
             WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
             COMMENT "Generate ${version_h_output}"
             VERBATIM

scripts/mkversion

@@ -89,7 +89,10 @@ function setfile() {
 
 # Figure out the object name and write its version file.
 function writeversion() {
-  genversion $1
+  # Extract version from git if it is not passed via command line
+  if [-z "$VN"]; then
+    genversion $1
+  fi
   local vfp;
   if [ -z "$1" ]; then
     vfp=$VF
@@ -107,14 +110,14 @@ function writeversion() {
 }
 
 function usage() {
-    echo "Usage: $0 [-a] [-f] [-n] [-o <outfile>] [<object>]"
+    echo "Usage: $0 [-a] [-f] [-n] [-v version] [-o <outfile>] [<object>]"
     exit 1
 }
 
 force=0
 dry_run=0
 write_all=0;
-args=$(getopt afno: $*)
+args=$(getopt afnv:o: $*)
 
 set -- $args
 for i; do
@@ -125,6 +128,7 @@ for i; do
         shift;;
     -n) dry_run=1;
         shift;;
+    -v) VN=$2; shift; shift;;
     -o) VF=$2; shift; shift;;
     --) shift; break;;
   esac