Re: git: fa7309cb976e - main - lang/clover: Restrict llvm to max version 16

Emmanuel Vadot <manu@FreeBSD.org> writes:

>     While here clean up a bit the USES=llvm for mesa port, we already set noexport
>     in mesa-dri/Makefile.common so no need to set it in all the ports.
[...]
> diff --git a/graphics/mesa-dri/Makefile b/graphics/mesa-dri/Makefile
> index e309b1adf75f..4e79e3ef500c 100644
> --- a/graphics/mesa-dri/Makefile
> +++ b/graphics/mesa-dri/Makefile
> @@ -8,7 +8,7 @@ WWW=		https://www.mesa3d.org/
>  
>  LIB_DEPENDS+=	libglapi.so:graphics/mesa-libs
>  
> -USES+=		llvm:lib,noexport
> +USES+=		llvm:lib

USES=llvm from Makefile.common has no effect due to bug 199603.
For example, poudriere build now has the following noise:

  sh: /usr/local/llvm15/bin/clang: not found
  make: "/usr/ports/Mk/Uses/compiler.mk" line 80: warning: "/usr/local/llvm15/bin/clang --version" returned non-zero status
  make: "/usr/ports/Mk/Uses/compiler.mk" line 128: warning: "/usr/local/llvm15/bin/clang++ -### /dev/null 2>&1" returned non-zero status

breaks WITH_LTO build (via make.conf or Makefile.local) on FreeBSD 13.2:

  llvm-ar: error: src/c11/impl/libmesa_util_c11.a: Opaque pointers are only supported in -opaque-pointers mode (Producer: 'LLVM15.0.7' Reader: 'LLVM 14.0.5')
  llvm-ar: error: src/util/libmesa_util_sse41.a: Opaque pointers are only supported in -opaque-pointers mode (Producer: 'LLVM15.0.7' Reader: 'LLVM 14.0.5')
  llvm-ar: error: src/util/libxmlconfig.a: Opaque pointers are only supported in -opaque-pointers mode (Producer: 'LLVM15.0.7' Reader: 'LLVM 14.0.5')
  llvm-ar: error: src/util/libmesa_util.a: Opaque pointers are only supported in -opaque-pointers mode (Producer: 'LLVM15.0.7' Reader: 'LLVM 14.0.5')
  [...]

and may pessimize WITH_CCACHE_BUILD due to absolute path in CC/CXX.