From a603250a132d3a38428b6c3e2f425c1a0b2c3878 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 29 Nov 2011 15:17:06 -0500
Subject: [PATCH] Load platform files that need to know the ABI when possible

Load platform files named in CMAKE_<lang>_ABI_FILES for each language
once the ABI sizeof(void*) is known.  During the first configuration
this is after the test for working compiler and ABI detection checks.
During later configurations the ABI information is immediately available
because it has been saved in CMake<lang>Compiler.cmake.
---
 Modules/CMakeCInformation.cmake        | 6 ++++++
 Modules/CMakeCXXInformation.cmake      | 6 ++++++
 Modules/CMakeFortranInformation.cmake  | 6 ++++++
 Modules/CMakeTestCCompiler.cmake       | 6 ++++++
 Modules/CMakeTestCXXCompiler.cmake     | 6 ++++++
 Modules/CMakeTestFortranCompiler.cmake | 6 ++++++
 Source/cmDocumentVariables.cxx         | 2 ++
 7 files changed, 38 insertions(+)

diff --git a/Modules/CMakeCInformation.cmake b/Modules/CMakeCInformation.cmake
index 9285fefb2..6b5efba9d 100644
--- a/Modules/CMakeCInformation.cmake
+++ b/Modules/CMakeCInformation.cmake
@@ -68,6 +68,12 @@ IF (NOT _INCLUDED_FILE)
   INCLUDE(Platform/${CMAKE_SYSTEM_NAME} OPTIONAL)
 ENDIF (NOT _INCLUDED_FILE)
 
+IF(CMAKE_C_SIZEOF_DATA_PTR)
+  FOREACH(f ${CMAKE_C_ABI_FILES})
+    INCLUDE(${f})
+  ENDFOREACH()
+  UNSET(CMAKE_C_ABI_FILES)
+ENDIF()
 
 # This should be included before the _INIT variables are
 # used to initialize the cache.  Since the rule variables 
diff --git a/Modules/CMakeCXXInformation.cmake b/Modules/CMakeCXXInformation.cmake
index 620de634e..b97a69c3b 100644
--- a/Modules/CMakeCXXInformation.cmake
+++ b/Modules/CMakeCXXInformation.cmake
@@ -67,6 +67,12 @@ IF (NOT _INCLUDED_FILE)
   INCLUDE(Platform/${CMAKE_SYSTEM_NAME} OPTIONAL)
 ENDIF (NOT _INCLUDED_FILE)
 
+IF(CMAKE_CXX_SIZEOF_DATA_PTR)
+  FOREACH(f ${CMAKE_CXX_ABI_FILES})
+    INCLUDE(${f})
+  ENDFOREACH()
+  UNSET(CMAKE_CXX_ABI_FILES)
+ENDIF()
 
 # This should be included before the _INIT variables are
 # used to initialize the cache.  Since the rule variables 
diff --git a/Modules/CMakeFortranInformation.cmake b/Modules/CMakeFortranInformation.cmake
index dc15e556e..aed1fd2df 100644
--- a/Modules/CMakeFortranInformation.cmake
+++ b/Modules/CMakeFortranInformation.cmake
@@ -44,6 +44,12 @@ IF (NOT _INCLUDED_FILE)
   INCLUDE(Platform/${CMAKE_SYSTEM_NAME} OPTIONAL)
 ENDIF (NOT _INCLUDED_FILE)
 
+IF(CMAKE_Fortran_SIZEOF_DATA_PTR)
+  FOREACH(f ${CMAKE_Fortran_ABI_FILES})
+    INCLUDE(${f})
+  ENDFOREACH()
+  UNSET(CMAKE_Fortran_ABI_FILES)
+ENDIF()
 
 # This should be included before the _INIT variables are
 # used to initialize the cache.  Since the rule variables 
diff --git a/Modules/CMakeTestCCompiler.cmake b/Modules/CMakeTestCCompiler.cmake
index 038c2fd47..4d4e35fcc 100644
--- a/Modules/CMakeTestCCompiler.cmake
+++ b/Modules/CMakeTestCCompiler.cmake
@@ -76,5 +76,11 @@ ELSE(NOT CMAKE_C_COMPILER_WORKS)
       )
     INCLUDE(${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCCompiler.cmake)
   ENDIF(CMAKE_C_COMPILER_FORCED)
+  IF(CMAKE_C_SIZEOF_DATA_PTR)
+    FOREACH(f ${CMAKE_C_ABI_FILES})
+      INCLUDE(${f})
+    ENDFOREACH()
+    UNSET(CMAKE_C_ABI_FILES)
+  ENDIF()
 ENDIF(NOT CMAKE_C_COMPILER_WORKS)
 
diff --git a/Modules/CMakeTestCXXCompiler.cmake b/Modules/CMakeTestCXXCompiler.cmake
index c1a3b3a10..494add371 100644
--- a/Modules/CMakeTestCXXCompiler.cmake
+++ b/Modules/CMakeTestCXXCompiler.cmake
@@ -69,4 +69,10 @@ ELSE(NOT CMAKE_CXX_COMPILER_WORKS)
       )
     INCLUDE(${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCXXCompiler.cmake)
   ENDIF(CMAKE_CXX_COMPILER_FORCED)
+  IF(CMAKE_CXX_SIZEOF_DATA_PTR)
+    FOREACH(f ${CMAKE_CXX_ABI_FILES})
+      INCLUDE(${f})
+    ENDFOREACH()
+    UNSET(CMAKE_CXX_ABI_FILES)
+  ENDIF()
 ENDIF(NOT CMAKE_CXX_COMPILER_WORKS)
diff --git a/Modules/CMakeTestFortranCompiler.cmake b/Modules/CMakeTestFortranCompiler.cmake
index 33f62eb50..b4dcea634 100644
--- a/Modules/CMakeTestFortranCompiler.cmake
+++ b/Modules/CMakeTestFortranCompiler.cmake
@@ -92,4 +92,10 @@ ELSE(NOT CMAKE_Fortran_COMPILER_WORKS)
       )
     INCLUDE(${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeFortranCompiler.cmake)
   ENDIF(CMAKE_Fortran_COMPILER_FORCED)
+  IF(CMAKE_Fortran_SIZEOF_DATA_PTR)
+    FOREACH(f ${CMAKE_Fortran_ABI_FILES})
+      INCLUDE(${f})
+    ENDFOREACH()
+    UNSET(CMAKE_Fortran_ABI_FILES)
+  ENDIF()
 ENDIF(NOT CMAKE_Fortran_COMPILER_WORKS)
diff --git a/Source/cmDocumentVariables.cxx b/Source/cmDocumentVariables.cxx
index ed303c9c6..7da07f846 100644
--- a/Source/cmDocumentVariables.cxx
+++ b/Source/cmDocumentVariables.cxx
@@ -1515,6 +1515,8 @@ void cmDocumentVariables::DefineVariables(cmake* cm)
                      cmProperty::VARIABLE,0,0);
   cm->DefineProperty("CMAKE_<LANG>_COMPILER_ID_RUN",
                      cmProperty::VARIABLE,0,0);
+  cm->DefineProperty("CMAKE_<LANG>_ABI_FILES",
+                     cmProperty::VARIABLE,0,0);
   cm->DefineProperty("CMAKE_<LANG>_CREATE_ASSEMBLY_SOURCE",
                      cmProperty::VARIABLE,0,0);
   cm->DefineProperty("CMAKE_<LANG>_CREATE_PREPROCESSED_SOURCE",