From 6f50a04cc1c4584472f850e06daad7ae20af45c4 Mon Sep 17 00:00:00 2001
From: Alex Neundorf <neundorf@kde.org>
Date: Sun, 23 Sep 2012 18:40:40 +0200
Subject: exports: define a CMAKE_FIND_PACKAGE_NAME var set by find_package()

This way the name of the searched package can be accessed in find-modules,
config-files and more importantly in generated target export files.
This is now used when a target export file detects that a required
target does not exist.

Alex
---
 Source/cmExportFileGenerator.cxx | 9 ++++++++-
 Source/cmFindPackageCommand.cxx  | 2 ++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/Source/cmExportFileGenerator.cxx b/Source/cmExportFileGenerator.cxx
index 5d95668..8dffae4 100644
--- a/Source/cmExportFileGenerator.cxx
+++ b/Source/cmExportFileGenerator.cxx
@@ -389,8 +389,15 @@ void cmExportFileGenerator::GenerateMissingTargetsCheckCode(std::ostream& os,
   for(unsigned int i=0; i<missingTargets.size(); ++i)
     {
     os << "IF(NOT TARGET \"" << missingTargets[i] << "\" )\n"
-       << "  MESSAGE(FATAL_ERROR \"Required imported target \\\""
+       << "  IF(CMAKE_FIND_PACKAGE_NAME)\n"
+       << "    SET( ${CMAKE_FIND_PACKAGE_NAME}_FOUND FALSE)\n"
+       << "    SET( ${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE "
+       << "\"Required imported target \\\"" << missingTargets[i]
+       << "\\\" not found ! \")\n"
+       << "  ELSE()\n"
+       << "    MESSAGE(FATAL_ERROR \"Required imported target \\\""
        << missingTargets[i] << "\\\" not found ! \")\n"
+       << "  ENDIF()\n"
        << "ENDIF()\n";
     }
   os << "\n";
diff --git a/Source/cmFindPackageCommand.cxx b/Source/cmFindPackageCommand.cxx
index c20941a..470ceca 100644
--- a/Source/cmFindPackageCommand.cxx
+++ b/Source/cmFindPackageCommand.cxx
@@ -840,6 +840,8 @@ bool cmFindPackageCommand
 //----------------------------------------------------------------------------
 void cmFindPackageCommand::SetModuleVariables(const std::string& components)
 {
+  this->AddFindDefinition("CMAKE_FIND_PACKAGE_NAME", this->Name.c_str());
+
   // Store the list of components.
   std::string components_var = this->Name + "_FIND_COMPONENTS";
   this->AddFindDefinition(components_var.c_str(), components.c_str());
-- 
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