Dimitry Andric <d...@freebsd.org> writes:
> Author: dim
> Date: Tue Sep 21 21:41:45 2010
> New Revision: 212979
> URL: http://svn.freebsd.org/changeset/base/212979
[...]
> Modified: head/gnu/lib/libobjc/Makefile
> ==============================================================================
> --- head/gnu/lib/libobjc/Makefile Tue Sep 21 21:07:46 2010
> (r212978)
> +++ head/gnu/lib/libobjc/Makefile Tue Sep 21 21:41:45 2010
> (r212979)
> @@ -16,9 +16,7 @@ SRCS= archive.c class.c encoding.c gc.c
> selector.c sendmsg.c thr.c thr-objc.c exception.c
>
> # XXX: clang cannot compile libobjc yet
> -.if ${CC:T:Mclang} == "clang"
> -CC=gcc
> -.endif
> +CC:=${CC:C/^(.*\/)?clang$/gcc/1}
How about clearing some user-defined variable together with the substitution
CLANG_FLAGS = # set to empty value
CC := ${CC:C/^(.*\/)?clang$/gcc/1}
in which user can store clang-specific flags (via src.conf), e.g.
CC = clang ${CLANG_FLAGS}
CLANG_FLAGS = -Qunused-arguments # too much noise for `make -s' build
or
CPUTYPE ?= native
CLANG_FLAGS = -mno-sse4 # don't feed as(1) unknown opcodes
Otherwise, substitution occurs too late and gcc(1) chokes on unknown
options.
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