[Mesa-dev] [PATCH] configure: Strip LLVMX86Asm* dependencies.

[Nicolai Hähnle]

On 04.12.2016 11:34, Gustaw Smolarczyk wrote:
> They are picked automatically by the provided llvm-config flags, but are
> not needed.
>
> Fixes loading radv through a vulkan loader.
>
> Cc: 13.0 <mesa-stable at lists.freedesktop.org>
> ---
>
> It's work-around for:
> https://lists.freedesktop.org/archives/mesa-dev/2016-October/130765.html
>
> Since there are other people than me dealing with this issue, might
> as well propose a patch that work-arounds it for me for these other
> people to benefit from.
>
> It's my first patch to the stable release, I hope I did it right.

Are you sure that these libs really aren't needed anywhere? Consider 
llvmpipe (and gallivm stuff more generally). I agree that radv doesn't 
need them.

Nicolai

>
>  configure.ac | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/configure.ac b/configure.ac
> index f62bc61e50..9d191edd97 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -2493,6 +2493,13 @@ if test "x$HAVE_RADEON_VULKAN" = "xyes"; then
>      radeon_llvm_check "radv" "3" "9" "0"
>  fi
>
> +strip_unwanted_llvm_libs() {
> +    # Use \> (marks the end of the word)
> +    echo `$1` | sed \
> +	-e 's/-lLLVMX86AsmPrinter\>//g' \
> +	-e 's/-lLLVMX86AsmParser\>//g'
> +}
> +
>  dnl Set LLVM_LIBS - This is done after the driver configuration so
>  dnl that drivers can add additional components to LLVM_COMPONENTS.
>  dnl Previously, gallium drivers were updating LLVM_LIBS directly
> @@ -2505,7 +2512,7 @@ if test "x$MESA_LLVM" != x0; then
>      if ! $LLVM_CONFIG --libs ${LLVM_COMPONENTS} >/dev/null; then
>         AC_MSG_ERROR([Calling ${LLVM_CONFIG} failed])
>      fi
> -    LLVM_LIBS="`$LLVM_CONFIG --libs ${LLVM_COMPONENTS}`"
> +    LLVM_LIBS=`strip_unwanted_llvm_libs "$LLVM_CONFIG --libs ${LLVM_COMPONENTS}"`
>
>      dnl llvm-config may not give the right answer when llvm is a built as a
>      dnl single shared library, so we must work the library name out for
>