-add_definitions( -D__STDC_CONSTANT_MACROS -m32 )
-
-set( CMAKE_EXE_LINKER_FLAGS "-m32 ${CMAKE_EXE_LINKER_FLAGS}" )
-set( CMAKE_LINK_LIBRARY_FLAG "-m32 ${CMAKE_LINK_LIBRARY_FLAG}" )
+add_definitions( -D__STDC_CONSTANT_MACROS )
+
+set(LLVM_PLO_FLAGS "" CACHE
+ STRING "Flags for creating partially linked objects.")
+
+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_definitions( -m32 )
+ list(APPEND CMAKE_EXE_LINKER_FLAGS -m32)
+ list(APPEND CMAKE_SHARED_LINKER_FLAGS -m32)
+ set( LLVM_PLO_FLAGS -melf_i386 ${LLVM_PLO_FLAGS} )
+ endif( LLVM_BUILD_32_BITS )
+endif( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )