From c12a7e388d449e96107ba1eea8b8b2f2469ec20f Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 4 Feb 2008 10:04:23 -0500
Subject: [PATCH] BUG: When configuring compiler information files into the
 CMakeFiles directory in the project build tree, use IMMEDIATE option for
 CONFIGURE_FILE explicitly.  It is needed in case the user sets
 CMAKE_BACKWARDS_COMPATIBILITY to 2.0 or lower.

---
 Modules/CMakeDetermineCCompiler.cmake       | 5 +++--
 Modules/CMakeDetermineCXXCompiler.cmake     | 5 +++--
 Modules/CMakeDetermineFortranCompiler.cmake | 3 ++-
 Modules/CMakeTestCCompiler.cmake            | 2 +-
 Modules/CMakeTestCXXCompiler.cmake          | 2 +-
 5 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/Modules/CMakeDetermineCCompiler.cmake b/Modules/CMakeDetermineCCompiler.cmake
index 0f88f893e..610ec6cb0 100644
--- a/Modules/CMakeDetermineCCompiler.cmake
+++ b/Modules/CMakeDetermineCCompiler.cmake
@@ -132,7 +132,8 @@ INCLUDE(CMakeFindBinUtils)
 
 # configure variables set in this file for fast reload later on
 CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in
-               "${CMAKE_PLATFORM_ROOT_BIN}/CMakeCCompiler.cmake"
-               @ONLY)
+  "${CMAKE_PLATFORM_ROOT_BIN}/CMakeCCompiler.cmake"
+  @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
+  )
 
 SET(CMAKE_C_COMPILER_ENV_VAR "CC")
diff --git a/Modules/CMakeDetermineCXXCompiler.cmake b/Modules/CMakeDetermineCXXCompiler.cmake
index bb5ff7419..2286bfa62 100644
--- a/Modules/CMakeDetermineCXXCompiler.cmake
+++ b/Modules/CMakeDetermineCXXCompiler.cmake
@@ -142,7 +142,8 @@ INCLUDE(CMakeFindBinUtils)
 
 # configure all variables set in this file
 CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCXXCompiler.cmake.in
-               ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCXXCompiler.cmake
-               @ONLY)
+  ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCXXCompiler.cmake
+  @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
+  )
 
 SET(CMAKE_CXX_COMPILER_ENV_VAR "CXX")
diff --git a/Modules/CMakeDetermineFortranCompiler.cmake b/Modules/CMakeDetermineFortranCompiler.cmake
index 9623b6184..bb80e6fd7 100644
--- a/Modules/CMakeDetermineFortranCompiler.cmake
+++ b/Modules/CMakeDetermineFortranCompiler.cmake
@@ -136,5 +136,6 @@ INCLUDE(CMakeFindBinUtils)
 # configure variables set in this file for fast reload later on
 CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeFortranCompiler.cmake.in
   ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeFortranCompiler.cmake
-  @ONLY)
+  @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
+  )
 SET(CMAKE_Fortran_COMPILER_ENV_VAR "FC")
diff --git a/Modules/CMakeTestCCompiler.cmake b/Modules/CMakeTestCCompiler.cmake
index b3a4b0d31..4499e60e3 100644
--- a/Modules/CMakeTestCCompiler.cmake
+++ b/Modules/CMakeTestCCompiler.cmake
@@ -52,7 +52,7 @@ ELSE(NOT CMAKE_C_COMPILER_WORKS)
     CONFIGURE_FILE(
       ${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in
       ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCCompiler.cmake
-      @ONLY
+      @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
       )
   ENDIF(CMAKE_C_COMPILER_FORCED)
 ENDIF(NOT CMAKE_C_COMPILER_WORKS)
diff --git a/Modules/CMakeTestCXXCompiler.cmake b/Modules/CMakeTestCXXCompiler.cmake
index 043186bd5..9c2305f06 100644
--- a/Modules/CMakeTestCXXCompiler.cmake
+++ b/Modules/CMakeTestCXXCompiler.cmake
@@ -45,7 +45,7 @@ ELSE(NOT CMAKE_CXX_COMPILER_WORKS)
     CONFIGURE_FILE(
       ${CMAKE_ROOT}/Modules/CMakeCXXCompiler.cmake.in
       ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCXXCompiler.cmake
-      @ONLY
+      @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
       )
   ENDIF(CMAKE_CXX_COMPILER_FORCED)
 ENDIF(NOT CMAKE_CXX_COMPILER_WORKS)