Merge topic 'project-include'

7d19b3091d Release note for CMAKE_PROJECT_INCLUDE variable
dda0190458 project: Add variable CMAKE_PROJECT_INCLUDE
390f14a244 Test ProjectInclude: Add NONE to avoid enabling languages

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3155

1 files changed, 31 insertions, 11 deletions

diff --git a/Source/cmProjectCommand.cxx b/Source/cmProjectCommand.cxx
index 2fe9fe8..de5d1ed 100644
--- a/Source/cmProjectCommand.cxx
+++ b/Source/cmProjectCommand.cxx
@@ -319,21 +319,41 @@ bool cmProjectCommand::InitialPass(std::vector<std::string> const& args,
     languages.emplace_back("CXX");
   }
   this->Makefile->EnableLanguage(languages, false);
-  std::string extraInclude = "CMAKE_PROJECT_" + projectName + "_INCLUDE";
-  const char* include = this->Makefile->GetDefinition(extraInclude);
-  if (include) {
-    bool readit = this->Makefile->ReadDependentFile(include);
-    if (!readit && !cmSystemTools::GetFatalErrorOccured()) {
-      std::string m = "could not find file:\n"
-                      "  ";
-      m += include;
-      this->SetError(m);
-      return false;
-    }
+
+  if (!this->IncludeByVariable("CMAKE_PROJECT_INCLUDE")) {
+    return false;
+  }
+
+  if (!this->IncludeByVariable("CMAKE_PROJECT_" + projectName + "_INCLUDE")) {
+    return false;
   }
+
   return true;
 }
 
+bool cmProjectCommand::IncludeByVariable(const std::string& variable)
+{
+  const char* include = this->Makefile->GetDefinition(variable);
+  if (!include) {
+    return true;
+  }
+
+  const bool readit = this->Makefile->ReadDependentFile(include);
+  if (readit) {
+    return true;
+  }
+
+  if (cmSystemTools::GetFatalErrorOccured()) {
+    return true;
+  }
+
+  std::string m = "could not find file:\n"
+                  "  ";
+  m += include;
+  this->SetError(m);
+  return false;
+}
+
 void cmProjectCommand::TopLevelCMakeVarCondSet(const char* const name,
                                                const char* const value)
 {