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Support for parallel compilation (/MP) when using the VS IDE.

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Patch by Erik Olofsson!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126847 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Oscar Fuentes 2011-03-02 17:47:37 +00:00
parent a20244d1ba
commit 0dddbc3d1b
2 changed files with 41 additions and 0 deletions
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25
cmake/modules/HandleLLVMOptions.cmake
View File

@ -102,6 +102,31 @@ if( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
endif( LLVM_BUILD_32_BITS )
endif( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
message(STATUS "uno"
"dos")
if( MSVC_IDE AND ( MSVC90 OR MSVC10 ) )
# Only Visual Studio 2008 and 2010 officially supports /MP.
# Visual Studio 2005 do support it but it's experimental there.
set(LLVM_COMPILER_JOBS "0" CACHE STRING
"Number of parallel compiler jobs. 0 means use all processors. Default is 0.")
if( NOT LLVM_COMPILER_JOBS STREQUAL "1" )
if( LLVM_COMPILER_JOBS STREQUAL "0" )
add_llvm_definitions( /MP )
else()
if (MSVC10)
message(FATAL_ERROR
"Due to a bug in CMake only 0 and 1 is supported for "
"LLVM_COMPILER_JOBS when generating for Visual Studio 2010")
else()
message(STATUS "Number of parallel compiler jobs set to " ${LLVM_COMPILER_JOBS})
add_llvm_definitions( /MP${LLVM_COMPILER_JOBS} )
endif()
endif()
else()
message(STATUS "Parallel compilation disabled")
endif()
endif()
if( MSVC )
include(ChooseMSVCCRT)

16
docs/CMake.html
View File

@ -452,6 +452,22 @@
</div>
<div class="doc_subsection">
<a name="msvc">Microsoft Visual C++</a>
</div>
<div class="doc_text">
<dl>
<dt><b>LLVM_COMPILER_JOBS</b>:STRING</dt>
<dd>Specifies the maximum number of parallell compiler jobs to use
per project when building with msbuild or Visual Studio. Only supported for
Visual Studio 2008 and Visual Studio 2010 CMake generators. 0 means use all
processors. Default is 0.</dd>
</dl>
</div>
<!-- *********************************************************************** -->
<hr>