From 7c0844d2f4f98d40bc4bb7be89cc75740506db3c Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 26 Apr 2004 11:00:41 -0400
Subject: BUG#682: Adding environment variable check to FIND_PACKAGE command.

---
 Modules/FindITK.cmake           |  3 +++
 Modules/FindVTK.cmake           |  3 +++
 Source/cmFindPackageCommand.cxx | 14 ++++++++++++++
 3 files changed, 20 insertions(+)

diff --git a/Modules/FindITK.cmake b/Modules/FindITK.cmake
index 12d27c6..40c321b 100644
--- a/Modules/FindITK.cmake
+++ b/Modules/FindITK.cmake
@@ -45,6 +45,9 @@ IF(NOT ITK_DIR)
   # Look for an installation or build tree.
   #
   FIND_PATH(ITK_DIR ITKConfig.cmake
+    # Look for an environment variable ITK_DIR.
+    $ENV{ITK_DIR}
+
     # Look in places relative to the system executable search path.
     ${ITK_DIR_SEARCH}
 
diff --git a/Modules/FindVTK.cmake b/Modules/FindVTK.cmake
index d2acc9a..519815f 100644
--- a/Modules/FindVTK.cmake
+++ b/Modules/FindVTK.cmake
@@ -65,6 +65,9 @@ IF(NOT VTK_DIR)
     # Support legacy cache files.
     ${VTK_DIR_SEARCH_LEGACY}
 
+    # Look for an environment variable VTK_DIR.
+    $ENV{VTK_DIR}
+
     # Look in places relative to the system executable search path.
     ${VTK_DIR_SEARCH}
 
diff --git a/Source/cmFindPackageCommand.cxx b/Source/cmFindPackageCommand.cxx
index 3b78201..7026bc9 100644
--- a/Source/cmFindPackageCommand.cxx
+++ b/Source/cmFindPackageCommand.cxx
@@ -326,6 +326,20 @@ bool cmFindPackageCommand::FindConfig()
 //----------------------------------------------------------------------------
 std::string cmFindPackageCommand::SearchForConfig() const
 {
+  // Check the environment variable.
+  std::string env;
+  if(cmSystemTools::GetEnv(this->Variable.c_str(), env) && env.length() > 0)
+    {
+    cmSystemTools::ConvertToUnixSlashes(env);
+    std::string f = env;
+    f += "/";
+    f += this->Config;
+    if(cmSystemTools::FileExists(f.c_str()))
+      {
+      return env;
+      }
+    }
+
   // Search the build directories.
   for(std::vector<cmStdString>::const_iterator b = this->Builds.begin();
       b != this->Builds.end(); ++b)
-- 
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