Print any evaluated 'elseif'/'else' commands in trace mode (#13220)

In trace mode ('--trace'), any 'elseif' or 'else' commands that are
evaluated as part of a conditional block will be printed.  Previously,
only the opening 'if' command of a conditional block was printed.

1 files changed, 13 insertions, 0 deletions

diff --git a/Source/cmIfCommand.cxx b/Source/cmIfCommand.cxx
index 4eed477284..ffc0f35b89 100644
--- a/Source/cmIfCommand.cxx
+++ b/Source/cmIfCommand.cxx
@@ -74,6 +74,13 @@ IsFunctionBlocked(const cmListFileFunction& lff,
           {
           this->IsBlocking = this->HasRun;
           this->HasRun = true;
+
+          // if trace is enabled, print a (trivially) evaluated "else"
+          // statement
+          if(!this->IsBlocking && mf.GetCMakeInstance()->GetTrace())
+            {
+            mf.PrintCommandTrace(this->Functions[c]);
+            }
           }
         else if (scopeDepth == 0 && !cmSystemTools::Strucmp
                  (this->Functions[c].Name.c_str(),"elseif"))
@@ -88,6 +95,12 @@ IsFunctionBlocked(const cmListFileFunction& lff,
             cmMakefileCall stack_manager(&mf, this->Functions[c], status);
             static_cast<void>(stack_manager);
 
+            // if trace is enabled, print the evaluated "elseif" statement
+            if(mf.GetCMakeInstance()->GetTrace())
+              {
+              mf.PrintCommandTrace(this->Functions[c]);
+              }
+
             std::string errorString;
 
             std::vector<std::string> expandedArguments;