Re: unbreak boost for powerpc, powerpc64

On Sat, Dec 23, 2023 at 05:44:43PM -0500, George Koehler wrote:
> devel/boost is broken on powerpc and powerpc64, because
> <boost/fiber/detail/cpu_relax.hpp> picks the wrong asm syntax.
> This patch fixes it, ok?

ok

> The REVISION bump conflicts with tb's "boost futex diff";
> I will do REVISION= 1 if tb commits before me.
> --gkoehler

Please go ahead, I can cope.

>
> Index: Makefile
> ===================================================================
> RCS file: /cvs/ports/devel/boost/Makefile,v
> retrieving revision 1.139
> diff -u -p -r1.139 Makefile
> --- Makefile 19 Dec 2023 06:14:25 -0000 1.139
> +++ Makefile 23 Dec 2023 18:33:03 -0000
> @@ -11,6 +11,7 @@ COMMENT-md= machine-dependent libraries
> VERSION= 1.84.0
> DISTNAME= boost_${VERSION:S/./_/g}
> PKGNAME= boost-${VERSION}
> +REVISION= 0
> EPOCH = 0
> CATEGORIES= devel
> SITES= https://boostorg.jfrog.io/artifactory/main/release/${VERSION}/source/
> Index: patches/patch-boost_fiber_detail_cpu_relax_hpp
> ===================================================================
> RCS file: patches/patch-boost_fiber_detail_cpu_relax_hpp
> diff -N patches/patch-boost_fiber_detail_cpu_relax_hpp
> --- /dev/null 1 Jan 1970 00:00:00 -0000
> +++ patches/patch-boost_fiber_detail_cpu_relax_hpp 23 Dec 2023 18:33:03 -0000
> @@ -0,0 +1,15 @@
> +Fix powerpc and powerpc64, where clang defines __POWERPC__ but rejects
> +Darwin's "r27" syntax with "error: invalid operand for instruction".
> +
> +Index: boost/fiber/detail/cpu_relax.hpp
> +--- boost/fiber/detail/cpu_relax.hpp.orig
> ++++ boost/fiber/detail/cpu_relax.hpp
> +@@ -59,7 +59,7 @@ namespace detail {
> + // processors
> + // extended mnemonics (available with POWER7)
> + // yield == or 27, 27, 27
> +-# if defined(__POWERPC__) // Darwin PPC
> ++# if defined(__APPLE__) // Darwin PPC
> + # define cpu_relax() asm volatile ("or r27,r27,r27" ::: "memory");
> + # else
> + # define cpu_relax() asm volatile ("or 27,27,27" ::: "memory");