On 2012-09-08 10:35, O. Hartmann wrote:
On 09/07/12 19:07, Brooks Davis wrote:
...
FWIW, picking up clang etc from /usr/local should be mostly harmless
during the early build stage. You're actual world will be built with
the cross clang.
... means, the resulting WORLD and KERNEL is then build by the
LLVM/CLANG that is residing in /usr/obj/...?
Yes. This is done so you can build an updated version of the system
compiler during the cross-tools stage, and then build the rest of the
world with this updated compiler.
But what is with PORTS I build later? They definitely pick up the
"wrong" clang/clang++.
If your search path has /usr/local/bin before /usr/bin, it will
obviously always pick up the ports-compiled clang, whatever version that
is.
If some other ports explicitly require clang 3.1, there should be a
mechanism to specifically invoke that version, instead of whatever the
first "clang" executable in the search path is.
For now, I think the best solution is to use the following (admittedly
rather kludgy) fragment in /etc/make.conf:
.if ${.CURDIR:M/usr/src*} || ${.CURDIR:M/usr/obj*}
CC=clang
CXX=clang++
CPP=clang-cpp
.else
CC=/usr/bin/clang
CXX=/usr/bin/clang++
CPP=/usr/bin/clang-cpp
.endif
Or alternatively:
.if ${.CURDIR:M/usr/ports*}
CC=/usr/bin/clang
CXX=/usr/bin/clang++
CPP=/usr/bin/clang-cpp
.else
CC=clang
CXX=clang++
CPP=clang-cpp
.endif
You're probably looking for WITH_CLANG_EXTRAS.
I already have that option enabled in my /etc/src.conf. But
unfortunately, a tool called "llvm-config" and sibblings weren't
installed, they get installed only with /usr/ports/devel/llvm[-devel].
This is on purpose, at least for now. The base system should only
contain the clang compiler proper, and none of the LLVM libraries. The
WITH_CLANG_EXTRAS option is just for getting a few tools that could be
handy, but should not be used by 99% of the users out there.
If you want the whole llvm and/or clang shebang, including the shared
libraries, just install the port. You can use the lang/clang-devel port
if you want to try out the bleeding edge version. AFAIK Brooks updates
it regularly.
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