[Mesa-dev] [PATCH] automake: Honor (GL|GLU|OSMESA)_LIB from environment

[Dan Nicholson]

On Jun 1, 2012 12:13 PM, "Brad King" <brad.king at kitware.com> wrote:
>
> Teach 'configure' to read the default GL_LIB, GLU_LIB, and OSMESA_LIB
> values from the environment.  This allows one to mangle the library
> names (without also mangling the symbol names) to make them distinct
> from other GL libraries on the system.
> ---
>
> On 06/01/2012 10:06 AM, Brian Paul wrote:
> > You should transition to using autoconf
>
> One feature I used in the pure-make build system was to create a custom
> configs/current to set GL_LIB, GLU_LIB, and OSMESA_LIB to have a "Mesa"
> prefix.  This helps ensure that VTK both builds and runs against my
> nightly Mesa build regardless of what other "GL" libraries appear in
> the dynamic loader's search path.  With this patch I can run
>
>  $ GL_LIB=MesaGL GLU_LIB=MesaGLU OSMESA_LIB=MesaOSMesa ./autogen.sh ...
>
> to build with custom library names.  Please review.
>
> Thanks,
> -Brad
>
>  configure.ac |   17 ++++++++++-------
>  1 file changed, 10 insertions(+), 7 deletions(-)
>
> diff --git a/configure.ac b/configure.ac
> index 9fb8149..7f6ba96 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -355,6 +355,12 @@ else
>         LIB_EXTENSION='so' ;;
>     esac
>  fi
> +AC_ARG_VAR([GL_LIB],[name of GL library @<:@default=GL@:>@])
> +AC_ARG_VAR([GLU_LIB],[name of GLU library @<:@default=GLU@:>@])
> +AC_ARG_VAR([OSMESA_LIB],[name of OSMesa library @<:@default=OSMesa@:>@])
> +GL_LIB="${GL_LIB-GL}"
> +GLU_LIB="${GLU_LIB-GLU}"
> +OSMESA_LIB="${OSMESA_LIB-OSMesa}"

I don't think this part is necessary. AC_ARG_VAR does this already. The
rest makes sense though.

Dan
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