From 5042581f4384cbeb19b769e8443ff4da7d322790 Mon Sep 17 00:00:00 2001
From: Bill Hoffman <bill.hoffman@kitware.com>
Date: Wed, 15 Feb 2006 21:26:47 -0500
Subject: ENH: better algorithm for looking for make and gcc on msys and mingw

---
 Modules/CMakeMSYSFindMake.cmake           |  6 +++++-
 Modules/CMakeMinGWFindMake.cmake          |  6 ++++--
 Source/cmGlobalMSYSMakefileGenerator.cxx  | 21 +++++++++------------
 Source/cmGlobalMinGWMakefileGenerator.cxx | 21 +++++++++------------
 4 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/Modules/CMakeMSYSFindMake.cmake b/Modules/CMakeMSYSFindMake.cmake
index 83bd111..5a9a342 100644
--- a/Modules/CMakeMSYSFindMake.cmake
+++ b/Modules/CMakeMSYSFindMake.cmake
@@ -1,2 +1,6 @@
-FIND_PROGRAM(CMAKE_MAKE_PROGRAM make PATHS c:/msys/1.0/bin /msys/1.0/bin)
+FIND_PROGRAM(CMAKE_MAKE_PROGRAM make 
+  PATHS 
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\MSYS-1.0_is1;Inno Setup: App Path]/bin"
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\MinGW;InstallLocation]/bin"
+  c:/msys/1.0/bin /msys/1.0/bin)
 MARK_AS_ADVANCED(CMAKE_MAKE_PROGRAM)
diff --git a/Modules/CMakeMinGWFindMake.cmake b/Modules/CMakeMinGWFindMake.cmake
index 42d1624..2ad0298 100644
--- a/Modules/CMakeMinGWFindMake.cmake
+++ b/Modules/CMakeMinGWFindMake.cmake
@@ -1,8 +1,10 @@
-FIND_PROGRAM(CMAKE_MAKE_PROGRAM mingw32-make.exe PATHS c:/MinGW/bin /MinGW/bin)
+FIND_PROGRAM(CMAKE_MAKE_PROGRAM mingw32-make.exe PATHS
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\MinGW;InstallLocation]/bin" 
+  c:/MinGW/bin /MinGW/bin)
 FIND_PROGRAM(CMAKE_SH sh.exe )
-MARK_AS_ADVANCED(CMAKE_MAKE_PROGRAM CMAKE_SH)
 IF(CMAKE_SH)
   MESSAGE(FATAL_ERROR "sh.exe was found in your PATH, here:\n${CMAKE_SH}\nFor MinGW make to work correctly sh.exe must NOT be in your path.\nRun cmake from a shell that does not have sh.exe in your PATH.\nIf you want to use a UNIX shell, then use MSYS Makefiles.\n")
   SET(CMAKE_MAKE_PROGRAM NOTFOUND)
 ENDIF(CMAKE_SH)
 
+MARK_AS_ADVANCED(CMAKE_MAKE_PROGRAM CMAKE_SH)
diff --git a/Source/cmGlobalMSYSMakefileGenerator.cxx b/Source/cmGlobalMSYSMakefileGenerator.cxx
index 5c106d6..fdae0b9 100644
--- a/Source/cmGlobalMSYSMakefileGenerator.cxx
+++ b/Source/cmGlobalMSYSMakefileGenerator.cxx
@@ -32,24 +32,21 @@ void cmGlobalMSYSMakefileGenerator::EnableLanguage(std::vector<std::string>const
   std::string makeProgram = mf->GetRequiredDefinition("CMAKE_MAKE_PROGRAM");
   std::vector<std::string> locations;
   locations.push_back(cmSystemTools::GetProgramPath(makeProgram.c_str()));
-  locations.push_back("c:/mingw/bin");
   locations.push_back("/mingw/bin");
   locations.push_back("/msys/1.0/bin");
+  locations.push_back("c:/mingw/bin");
   locations.push_back("C:/msys/1.0/bin");
+  std::string tgcc = cmSystemTools::FindProgram("gcc", locations);
   std::string gcc = "gcc.exe";
+  if(tgcc.size())
+    {
+    gcc = tgcc;
+    }
+  std::string tgxx = cmSystemTools::FindProgram("g++", locations);
   std::string gxx = "g++.exe";
-  std::string slash = "/";
-  for(std::vector<std::string>::iterator i = locations.begin();
-      i != locations.end(); ++i)
+  if(tgxx.size())
     {
-    std::string tgcc = *i + slash + gcc;
-    std::string tgxx = *i + slash + gxx;
-    if(cmSystemTools::FileExists(tgcc.c_str()))
-      {
-      gcc = tgcc;
-      gxx = tgxx;
-      break;
-      }
+    gxx = tgxx;
     }
   mf->AddDefinition("CMAKE_GENERATOR_CC", gcc.c_str());
   mf->AddDefinition("CMAKE_GENERATOR_CXX", gxx.c_str());
diff --git a/Source/cmGlobalMinGWMakefileGenerator.cxx b/Source/cmGlobalMinGWMakefileGenerator.cxx
index 1472458..8af608b 100644
--- a/Source/cmGlobalMinGWMakefileGenerator.cxx
+++ b/Source/cmGlobalMinGWMakefileGenerator.cxx
@@ -32,22 +32,19 @@ void cmGlobalMinGWMakefileGenerator::EnableLanguage(std::vector<std::string>cons
   std::string makeProgram = mf->GetRequiredDefinition("CMAKE_MAKE_PROGRAM");
   std::vector<std::string> locations;
   locations.push_back(cmSystemTools::GetProgramPath(makeProgram.c_str()));
-  locations.push_back("c:/mingw/bin");
   locations.push_back("/mingw/bin");
+  locations.push_back("c:/mingw/bin");
+  std::string tgcc = cmSystemTools::FindProgram("gcc", locations);
   std::string gcc = "gcc.exe";
+  if(tgcc.size())
+    {
+    gcc = tgcc;
+    }
+  std::string tgxx = cmSystemTools::FindProgram("g++", locations);
   std::string gxx = "g++.exe";
-  std::string slash = "/";
-  for(std::vector<std::string>::iterator i = locations.begin();
-      i != locations.end(); ++i)
+  if(tgxx.size())
     {
-    std::string tgcc = *i + slash + gcc;
-    std::string tgxx = *i + slash + gxx;
-    if(cmSystemTools::FileExists(tgcc.c_str()))
-      {
-      gcc = tgcc;
-      gxx = tgxx;
-      break;
-      }
+    gxx = tgxx;
     }
   mf->AddDefinition("CMAKE_GENERATOR_CC", gcc.c_str());
   mf->AddDefinition("CMAKE_GENERATOR_CXX", gxx.c_str());
-- 
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