[Mesa-dev] [PATCH] configure: link against -lLLVM to determine build type

[Tom Stellard]

On Tue, Aug 13, 2013 at 05:53:52PM +0200, Maarten Lankhorst wrote:
> Fixes a build failure of 9.2 on ubuntu, because libLLVM-3.3.so is not present in /usr/lib/llvm-3.2/lib.
>

I'm trying to understand the problem here, could you give a little more
information about how Ubuntu packages LLVM?  Where are the LLVM
libraries installed and what does llvm-config --libdir --ldflags report?

-Tom

> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at canonical.com>
> ---
> diff --git a/configure.ac b/configure.ac
> index 35f6797..579d8d4 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -1870,7 +1870,18 @@ if test "x$MESA_LLVM" != x0; then
>      if test "x$with_llvm_shared_libs" = xyes; then
>          dnl We can't use $LLVM_VERSION because it has 'svn' stripped out,
>          LLVM_SO_NAME=LLVM-`$LLVM_CONFIG --version`
> -        AS_IF([test -f "$LLVM_LIBDIR/lib$LLVM_SO_NAME.so"], [llvm_have_one_so=yes])
> +
> +        AC_MSG_CHECKING([whether $LLVM_SO_NAME is a monolithic blob])
> +        save_LIBS="$LIBS"
> +        save_LDFLAGS="$LDFLAGS"
> +        LDFLAGS="$LDFLAGS $LLVM_LDFLAGS"
> +        LIBS="$LIBS -l$LLVM_SO_NAME"
> +
> +        AC_LINK_IFELSE([AC_LANG_CALL([], [LLVMInitializeCore])],
> +                           [llvm_have_one_so=yes], [llvm_have_one_so=no])
> +        LIBS="$save_LIBS"
> +        LDFLAGS="$save_LDFLAGS"
> +        AC_MSG_RESULT([$llvm_have_one_so])
>  
>          if test "x$llvm_have_one_so" = xyes; then
>              dnl LLVM was built using auto*, so there is only one shared object.
> 
> _______________________________________________
> mesa-dev mailing list
> mesa-dev at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev