[Mesa-dev] [PATCH 1/2] configure.ac: enable LLVM by default

[Andy Furniss]

Marek Olšák wrote:
> OpenSUSE is (was?) shipping r300g with LLVM disabled. Can you believe it?
> Poor users with SWTCL chipsets... and bad reputation for us too.
> ---
>   configure.ac |    4 ++--
>   1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/configure.ac b/configure.ac
> index 8989c2b..8e9f73f 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -1687,10 +1687,10 @@ dnl Gallium LLVM
>   dnl
>   AC_ARG_ENABLE([gallium-llvm],
>       [AS_HELP_STRING([--enable-gallium-llvm],
> -        [build gallium LLVM support @<:@default=disabled@:>@])],
> +        [build gallium LLVM support @<:@default=enabled@:>@])],
>       [enable_gallium_llvm="$enableval"],
>       [enable_gallium_llvm=auto])
> -if test "x$enable_gallium_llvm" = xyes; then
> +if test "x$enable_gallium_llvm" != xno; then
>       if test "x$LLVM_CONFIG" != xno; then
>   	LLVM_VERSION=`$LLVM_CONFIG --version`
>   	LLVM_CFLAGS=`$LLVM_CONFIG --cppflags`

Not that it really affects me as for r600g I can  --disable-gallium-r300 
enable_gallium_llvm=no

but I notice llvm doesn't behave like mesa/xorg usually does in that 
following the xorg modular developers guide, setting

--prefix=
ACLOCAL
PKG_CONFIG_PATH

to a non standard xorg location doesn't work with llvm - it still tries 
to build/link against /usr/lib.

This fails on boxes I have with really old xorg.

If this is intentional then fair enough.
ISTR getting llvm to build against the "right" xorg in the past, but 
think it took a lot of messing around (the detail I can't recall).