From 2f3eee74908669e612eec74db2c2b4791d543db4 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Thu, 7 Apr 2011 17:09:05 -0400
Subject: [PATCH] XL: Consolidate compiler flag information

Factor duplicate information out of Compiler/XL-<lang>.cmake modules
into a macro in a new Compiler/XL.cmake module.  Invoke it from the
per-language files to produce the original settings.
---
 Modules/Compiler/XL-C.cmake       | 13 ++++---------
 Modules/Compiler/XL-CXX.cmake     | 13 ++++---------
 Modules/Compiler/XL-Fortran.cmake | 10 +++++-----
 Modules/Compiler/XL.cmake         | 31 +++++++++++++++++++++++++++++++
 4 files changed, 44 insertions(+), 23 deletions(-)
 create mode 100644 Modules/Compiler/XL.cmake

diff --git a/Modules/Compiler/XL-C.cmake b/Modules/Compiler/XL-C.cmake
index 8f6655762..ae869e37e 100644
--- a/Modules/Compiler/XL-C.cmake
+++ b/Modules/Compiler/XL-C.cmake
@@ -1,14 +1,9 @@
-SET(CMAKE_C_VERBOSE_FLAG "-V")
+include(Compiler/XL)
+__compiler_xl(C)
+set(CMAKE_C_FLAGS_RELEASE_INIT "${CMAKE_C_FLAGS_RELEASE_INIT} -DNDEBUG")
+set(CMAKE_C_FLAGS_MINSIZEREL_INIT "${CMAKE_C_FLAGS_MINSIZEREL_INIT} -DNDEBUG")
 
 # -qthreaded     = Ensures that all optimizations will be thread-safe
 # -qalias=noansi = Turns off type-based aliasing completely (safer optimizer)
 # -qhalt=e       = Halt on error messages (rather than just severe errors)
 SET(CMAKE_C_FLAGS_INIT "-qthreaded -qalias=noansi -qhalt=e")
-
-SET(CMAKE_C_FLAGS_DEBUG_INIT "-g")
-SET(CMAKE_C_FLAGS_RELEASE_INIT "-O -DNDEBUG")
-SET(CMAKE_C_FLAGS_MINSIZEREL_INIT "-O -DNDEBUG")
-SET(CMAKE_C_FLAGS_RELWITHDEBINFO_INIT "-g")
-
-SET(CMAKE_C_CREATE_PREPROCESSED_SOURCE "<CMAKE_C_COMPILER> <DEFINES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
-SET(CMAKE_C_CREATE_ASSEMBLY_SOURCE "<CMAKE_C_COMPILER> <DEFINES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
diff --git a/Modules/Compiler/XL-CXX.cmake b/Modules/Compiler/XL-CXX.cmake
index c4e4550dd..29c4b5e37 100644
--- a/Modules/Compiler/XL-CXX.cmake
+++ b/Modules/Compiler/XL-CXX.cmake
@@ -1,16 +1,11 @@
-SET(CMAKE_CXX_VERBOSE_FLAG "-V")
+include(Compiler/XL)
+__compiler_xl(CXX)
+set(CMAKE_CXX_FLAGS_RELEASE_INIT "${CMAKE_CXX_FLAGS_RELEASE_INIT} -DNDEBUG")
+set(CMAKE_CXX_FLAGS_MINSIZEREL_INIT "${CMAKE_CXX_FLAGS_MINSIZEREL_INIT} -DNDEBUG")
 
 # -qthreaded     = Ensures that all optimizations will be thread-safe
 # -qhalt=e       = Halt on error messages (rather than just severe errors)
 SET(CMAKE_CXX_FLAGS_INIT "-qthreaded -qhalt=e")
 
-SET(CMAKE_CXX_FLAGS_DEBUG_INIT "-g")
-SET(CMAKE_CXX_FLAGS_RELEASE_INIT "-O -DNDEBUG")
-SET(CMAKE_CXX_FLAGS_MINSIZEREL_INIT "-O -DNDEBUG")
-SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT "-g")
-
 SET(CMAKE_CXX_COMPILE_OBJECT
   "<CMAKE_CXX_COMPILER> -+ <DEFINES> <FLAGS> -o <OBJECT> -c <SOURCE>")
-
-SET(CMAKE_CXX_CREATE_PREPROCESSED_SOURCE "<CMAKE_CXX_COMPILER> <DEFINES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
-SET(CMAKE_CXX_CREATE_ASSEMBLY_SOURCE "<CMAKE_CXX_COMPILER> <DEFINES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
diff --git a/Modules/Compiler/XL-Fortran.cmake b/Modules/Compiler/XL-Fortran.cmake
index 17a3dd2dd..e6f231796 100644
--- a/Modules/Compiler/XL-Fortran.cmake
+++ b/Modules/Compiler/XL-Fortran.cmake
@@ -1,4 +1,5 @@
-SET(CMAKE_Fortran_VERBOSE_FLAG "-V")
+include(Compiler/XL)
+__compiler_xl(Fortran)
 
 SET(CMAKE_Fortran_DEFINE_FLAG "-WF,-D")
 
@@ -6,7 +7,6 @@ SET(CMAKE_Fortran_DEFINE_FLAG "-WF,-D")
 # -qhalt=e       = Halt on error messages (rather than just severe errors)
 SET(CMAKE_Fortran_FLAGS_INIT "-qthreaded -qhalt=e")
 
-SET(CMAKE_Fortran_FLAGS_DEBUG_INIT "-g")
-SET(CMAKE_Fortran_FLAGS_RELEASE_INIT "-O")
-SET(CMAKE_Fortran_FLAGS_MINSIZEREL_INIT "-O")
-SET(CMAKE_Fortran_FLAGS_RELWITHDEBINFO_INIT "-g")
+# We require updates to CMake C++ code to support preprocessing rules for Fortran.
+SET(CMAKE_Fortran_CREATE_PREPROCESSED_SOURCE)
+SET(CMAKE_Fortran_CREATE_ASSEMBLY_SOURCE)
diff --git a/Modules/Compiler/XL.cmake b/Modules/Compiler/XL.cmake
new file mode 100644
index 000000000..f5331d36c
--- /dev/null
+++ b/Modules/Compiler/XL.cmake
@@ -0,0 +1,31 @@
+
+#=============================================================================
+# Copyright 2002-2011 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+# This module is shared by multiple languages; use include blocker.
+if(__COMPILER_XL)
+  return()
+endif()
+set(__COMPILER_XL 1)
+
+macro(__compiler_xl lang)
+  # Feature flags.
+  set(CMAKE_${lang}_VERBOSE_FLAG "-V")
+
+  set(CMAKE_${lang}_FLAGS_DEBUG_INIT "-g")
+  set(CMAKE_${lang}_FLAGS_RELEASE_INIT "-O")
+  set(CMAKE_${lang}_FLAGS_MINSIZEREL_INIT "-O")
+  set(CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT "-g")
+  set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
+  set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE     "<CMAKE_${lang}_COMPILER> <DEFINES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
+endmacro()