From c8f399d0c78c8f6575e582378c5c0b5d16c97048 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Fri, 4 Nov 2011 19:04:35 +0000
Subject: [PATCH] build/cmake: Move all the user controllable options into
 top-level CMakeLists for consistency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143728 91177308-0d34-0410-b5e6-96231b3b80d8
---
 CMakeLists.txt                        | 33 +++++++++++++++++++++++++++
 cmake/modules/HandleLLVMOptions.cmake | 17 ++++----------
 2 files changed, 37 insertions(+), 13 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 63682487b83..ba425d34a2f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -151,6 +151,39 @@ else()
   option(LLVM_ENABLE_ASSERTIONS "Enable assertions" ON)
 endif()
 
+# Define an option controlling whether we should build for 32-bit on 64-bit
+# platforms, where supported.
+if( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
+  # TODO: support other platforms and toolchains.
+  option(LLVM_BUILD_32_BITS "Build 32 bits executables and libraries." OFF)
+endif()
+
+# Define an option controlling whether or not we include the test targets in the
+# project.
+option(LLVM_INCLUDE_TESTS "Generate build targets for the LLVM unit tests." ON)
+
+# Define the default arguments to use with 'lit', and an option for the user to
+# override.
+set(LIT_ARGS_DEFAULT "-sv")
+if (MSVC OR XCODE)
+  set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
+endif()
+set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
+
+# On Win32/Cygwin, provide an option to specify the path to the GnuWin32 tools.
+if( WIN32 AND CYGWIN )
+  set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
+endif()
+
+# On Win32 using MS tools, provide an option to set the number of parallel jobs
+# to use.
+if( MSVC_IDE AND ( MSVC90 OR MSVC10 ) )
+  # Only Visual Studio 2008 and 2010 officially supports /MP.  Visual Studio
+  # 2005 supports it but it is experimental.
+  set(LLVM_COMPILER_JOBS "0" CACHE STRING
+    "Number of parallel compiler jobs. 0 means use all processors. Default is 0.")
+endif()
+
 # All options referred to from HandleLLVMOptions have to be specified
 # BEFORE this include, otherwise options will not be correctly set on
 # first cmake run
diff --git a/cmake/modules/HandleLLVMOptions.cmake b/cmake/modules/HandleLLVMOptions.cmake
index 9dc1624f446..6788f8ec68a 100644
--- a/cmake/modules/HandleLLVMOptions.cmake
+++ b/cmake/modules/HandleLLVMOptions.cmake
@@ -1,3 +1,7 @@
+# This CMake module is responsible for interpreting the user defined LLVM_
+# options and executing the appropriate CMake commands to realize the users'
+# selections.
+
 include(AddLLVMDefinitions)
 
 if( CMAKE_COMPILER_IS_GNUCXX )
@@ -20,13 +24,6 @@ else()
   set(RUNTIME_BUILD_MODE "${CMAKE_CFG_INTDIR}")
 endif()
 
-set(LIT_ARGS_DEFAULT "-sv")
-if (MSVC OR XCODE)
-  set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
-endif()
-set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}"
-    CACHE STRING "Default options for lit")
-
 if( LLVM_ENABLE_ASSERTIONS )
   # MSVC doesn't like _DEBUG on release builds. See PR 4379.
   if( NOT MSVC )
@@ -52,9 +49,6 @@ if(WIN32)
   else(CYGWIN)
     set(LLVM_ON_WIN32 1)
     set(LLVM_ON_UNIX 0)
-
-    # This is effective only on Win32 hosts to use gnuwin32 tools.
-    set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
   endif(CYGWIN)
   set(LTDL_SHLIB_EXT ".dll")
   set(EXEEXT ".exe")
@@ -99,7 +93,6 @@ endif()
 
 if( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
   # TODO: support other platforms and toolchains.
-  option(LLVM_BUILD_32_BITS "Build 32 bits executables and libraries." OFF)
   if( LLVM_BUILD_32_BITS )
     message(STATUS "Building 32 bits executables and libraries.")
     add_llvm_definitions( -m32 )
@@ -189,5 +182,3 @@ endif( MSVC )
 add_llvm_definitions( -D__STDC_CONSTANT_MACROS )
 add_llvm_definitions( -D__STDC_FORMAT_MACROS )
 add_llvm_definitions( -D__STDC_LIMIT_MACROS )
-
-option(LLVM_INCLUDE_TESTS "Generate build targets for the LLVM unit tests." ON)