Use Base.@kwdef to automatically provide a kwarg constructor for the GitVersionInfo struct with default values

Author: DilumAluthge

base/version_git.sh

@@ -4,17 +4,17 @@
 # This file collects git info and create a julia file with the GIT_VERSION_INFO struct
 
 echo "# This file was autogenerated in base/version_git.sh"
-echo "struct GitVersionInfo"
-echo "    commit::String"
-echo "    commit_short::String"
-echo "    branch::String"
-echo "    build_number::Int"
-echo "    date_string::String"
-echo "    tagged_commit::Bool"
-echo "    fork_master_distance::Int"
-echo "    fork_master_timestamp::Float64"
-echo "    build_system_commit::String"
-echo "    build_system_commit_short::String"
+echo "Base.@kwdef struct GitVersionInfo"
+echo "    commit::String = \"\""
+echo "    commit_short::String = \"\""
+echo "    branch::String = \"\""
+echo "    build_number::Int = 0"
+echo "    date_string::String = \"\""
+echo "    tagged_commit::Bool = true"
+echo "    fork_master_distance::Int = 0"
+echo "    fork_master_timestamp::Float64 = 0"
+echo "    build_system_commit::String = \"\""
+echo "    build_system_commit_short::String = \"\""
 echo "end"
 echo ""
 
@@ -24,7 +24,7 @@ cd $1
 if [  "$#" = "2"  -a "$2" = "NO_GIT" ]; then
     # this comment is used in base/Makefile to distinguish boilerplate
     echo "# Default output if git is not available."
-    echo "const GIT_VERSION_INFO = GitVersionInfo(\"\" ,\"\" ,\"\" ,0 ,\"\" ,true ,0 ,0.)"
+    echo "const GIT_VERSION_INFO = GitVersionInfo()"
     exit 0
 fi
 # Collect temporary variables