[llvm-commits] [polly] r153439 - /polly/trunk/CMakeLists.txt

[Tobias Grosser]

On 03/26/2012 05:16 PM, Hongbin Zheng wrote:
> Author: ether
> Date: Mon Mar 26 10:16:29 2012
> New Revision: 153439
>
> URL: http://llvm.org/viewvc/llvm-project?rev=153439&view=rev
> Log:
> Out-of-tree build: Load the configuration of the installed llvm.
>
> Modified:
>      polly/trunk/CMakeLists.txt
>
> Modified: polly/trunk/CMakeLists.txt
> URL: http://llvm.org/viewvc/llvm-project/polly/trunk/CMakeLists.txt?rev=153439&r1=153438&r2=153439&view=diff
> ==============================================================================
> --- polly/trunk/CMakeLists.txt (original)
> +++ polly/trunk/CMakeLists.txt Mon Mar 26 10:16:29 2012
> @@ -20,23 +20,8 @@
>     # Add the llvm header path.
>     include_directories(${LLVM_INSTALL_ROOT}/include/)
>
> -  # Get the system librarys that will link into LLVM.
> -  function(get_system_libs return_var)
> -    # Returns in `return_var' a list of system libraries used by LLVM.
> -    if( NOT MSVC )
> -      if( MINGW )
> -        set(system_libs ${system_libs} imagehlp psapi)
> -      elseif( CMAKE_HOST_UNIX )
> -        if( HAVE_LIBDL )
> -          set(system_libs ${system_libs} ${CMAKE_DL_LIBS})
> -        endif()
> -        if( LLVM_ENABLE_THREADS AND HAVE_LIBPTHREAD )
> -          set(system_libs ${system_libs} pthread)
> -        endif()
> -      endif( MINGW )
> -    endif( NOT MSVC )
> -    set(${return_var} ${system_libs} PARENT_SCOPE)
> -  endfunction(get_system_libs)
> +  # Load the configuration of the installed llvm.
> +  include(${LLVM_INSTALL_ROOT}/share/llvm/cmake/LLVMConfig.cmake)

This file is not installed, if LLVM is build with autoconf.

What about parsing the output of 'lli -version' to get the information 
that you need?

$lli -version
LLVM (http://llvm.org/):
   LLVM version 3.1svn
   DEBUG build with assertions.
   Built Mar 16 2012 (11:26:54).
   Default target: x86_64-unknown-linux-gnu
   Host CPU: corei7

Or even better; Why don't we just execute a trivial LLVM-IR file with an 
x86_64 triple with lli. If it works, we can use it. Otherwise not.

Cheers
Tobi