Find: Provide global controls for the `NO_[]_PATH` call options

3 files changed, 27 insertions, 0 deletions

diff --git a/Source/cmFindBase.cxx b/Source/cmFindBase.cxx
index e590802..be7964a 100644
--- a/Source/cmFindBase.cxx
+++ b/Source/cmFindBase.cxx
@@ -67,6 +67,9 @@ bool cmFindBase::ParseArguments(std::vector<std::string> const& argsIn)
   }
   this->AlreadyInCache = false;
 
+  // Find what search path locations have been enabled/disable
+  this->SelectDefaultSearchModes();
+
   // Find the current root path mode.
   this->SelectDefaultRootPathMode();
 
diff --git a/Source/cmFindCommon.cxx b/Source/cmFindCommon.cxx
index 954558f..c6b9049 100644
--- a/Source/cmFindCommon.cxx
+++ b/Source/cmFindCommon.cxx
@@ -3,6 +3,7 @@
 #include "cmFindCommon.h"
 
 #include <algorithm>
+#include <array>
 #include <string.h>
 #include <utility>
 
@@ -144,6 +145,26 @@ void cmFindCommon::SelectDefaultMacMode()
   }
 }
 
+void cmFindCommon::SelectDefaultSearchModes()
+{
+  const std::array<std::pair<bool&, std::string>, 5> search_paths = {
+    { { this->NoPackageRootPath, "CMAKE_FIND_USE_PACAKGE_ROOT_PATH" },
+      { this->NoCMakePath, "CMAKE_FIND_USE_CMAKE_PATH" },
+      { this->NoCMakeEnvironmentPath,
+        "CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH" },
+      { this->NoSystemEnvironmentPath,
+        "CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH" },
+      { this->NoCMakeSystemPath, "CMAKE_FIND_USE_CMAKE_SYSTEM_PATH" } }
+  };
+
+  for (auto& path : search_paths) {
+    const char* def = this->Makefile->GetDefinition(path.second);
+    if (def) {
+      path.first = !cmSystemTools::IsOn(def);
+    }
+  }
+}
+
 void cmFindCommon::RerootPaths(std::vector<std::string>& paths)
 {
 #if 0
diff --git a/Source/cmFindCommon.h b/Source/cmFindCommon.h
index 89ff174..d95eeb1 100644
--- a/Source/cmFindCommon.h
+++ b/Source/cmFindCommon.h
@@ -90,6 +90,9 @@ protected:
   /** Compute the current default bundle/framework search policy.  */
   void SelectDefaultMacMode();
 
+  /** Compute the current default search modes based on global variables.  */
+  void SelectDefaultSearchModes();
+
   // Path arguments prior to path manipulation routines
   std::vector<std::string> UserHintsArgs;
   std::vector<std::string> UserGuessArgs;