cmCTestGIT: add an option to initialize submodules on update

Currently, CTest will not initialize any submodules within the already
checked out source tree. Add an option to do so. The use case for not
doing so is that some submodules may not be necessary for the current
test and keeping network usage down may be important.

1 files changed, 18 insertions, 1 deletions

diff --git a/Source/CTest/cmCTestGIT.cxx b/Source/CTest/cmCTestGIT.cxx
index da086be..9ee18e6 100644
--- a/Source/CTest/cmCTestGIT.cxx
+++ b/Source/CTest/cmCTestGIT.cxx
@@ -285,9 +285,26 @@ bool cmCTestGIT::UpdateImpl()
       }
     }
 
-  char const* git_submodule[] = {git, "submodule", "update", recursive, 0};
   OutputLogger submodule_out(this->Log, "submodule-out> ");
   OutputLogger submodule_err(this->Log, "submodule-err> ");
+
+  bool ret;
+
+  std::string init_submodules =
+    this->CTest->GetCTestConfiguration("GITInitSubmodules");
+  if (cmSystemTools::IsOn(init_submodules.c_str()))
+    {
+    char const* git_submodule_init[] = {git, "submodule", "init", 0};
+    ret = this->RunChild(git_submodule_init, &submodule_out, &submodule_err,
+                         top_dir.c_str());
+
+    if (!ret)
+      {
+      return false;
+      }
+    }
+
+  char const* git_submodule[] = {git, "submodule", "update", recursive, 0};
   return this->RunChild(git_submodule, &submodule_out, &submodule_err,
                         top_dir.c_str());
 }