add_custom_command: Move append functionality into class cmMakefile

Source/cmAddCustomCommandCommand.cxx

@@ -13,7 +13,6 @@
 #include "cmMakefile.h"
 #include "cmMessageType.h"
 #include "cmPolicies.h"
-#include "cmSourceFile.h"
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
@@ -317,14 +316,9 @@ bool cmAddCustomCommandCommand(std::vector<std::string> const& args,
 
   // Check for an append request.
   if (append) {
-    // Lookup an existing command.
-    if (cmSourceFile* sf = mf.GetSourceFileWithOutput(output[0])) {
-      if (cmCustomCommand* cc = sf->GetCustomCommand()) {
-        cc->AppendCommands(commandLines);
-        cc->AppendDepends(depends);
-        cc->AppendImplicitDepends(implicit_depends);
-        return true;
-      }
+    if (mf.AppendCustomCommandToOutput(output[0], depends, implicit_depends,
+                                       commandLines)) {
+      return true;
     }
 
     // No command for this output exists.

Source/cmMakefile.cxx

@@ -1111,6 +1111,23 @@ void cmMakefile::AddCustomCommandOldStyle(
   }
 }
 
+bool cmMakefile::AppendCustomCommandToOutput(
+  const std::string& output, const std::vector<std::string>& depends,
+  const cmImplicitDependsList& implicit_depends,
+  const cmCustomCommandLines& commandLines)
+{
+  // Lookup an existing command.
+  if (cmSourceFile* sf = this->GetSourceFileWithOutput(output)) {
+    if (cmCustomCommand* cc = sf->GetCustomCommand()) {
+      cc->AppendCommands(commandLines);
+      cc->AppendDepends(depends);
+      cc->AppendImplicitDepends(implicit_depends);
+      return true;
+    }
+  }
+  return false;
+}
+
 cmTarget* cmMakefile::AddUtilityCommand(
   const std::string& utilityName, TargetOrigin origin, bool excludeFromAll,
   const std::vector<std::string>& depends, const char* workingDirectory,

Source/cmMakefile.h

@@ -185,6 +185,10 @@ public:
                                 const std::string& source,
                                 const cmCustomCommandLines& commandLines,
                                 const char* comment);
+  bool AppendCustomCommandToOutput(
+    const std::string& output, const std::vector<std::string>& depends,
+    const cmImplicitDependsList& implicit_depends,
+    const cmCustomCommandLines& commandLines);
 
   /**
    * Add a define flag to the build.