On 13 Apr 2010, at 00:22, Ian Lance Taylor wrote:
IainS <develo...@sandoe-acoustics.co.uk> writes:
yeah .. we use it in Darwin's dsymutil spec.
%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
%{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
%{gdwarf-2:%{!gstabs*:%{!g0: dsymutil %{o*:%*}%{!
o:a.out}}}}}}}}}}}}"
%{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}\n"
if you put "-lm" on the c/l dsymutil doesn't get called.
Note that in the specs language the %{.XXX: ...} is matched against
the filename passed to the gcc driver. It doesn't know the source
language of a .o file. So if you are linking, and passing .o files,
then this approach won't work.
well, my first question to myself was 'why are there not ".o" and ".a"
in the list?' ;))
There are two aspects to this ...
1/ the fact that this is probably not the right thing to do in that
spec - easily solved by deleting it..
2/ The weird effect where putting -lm on the c/l causes the
substitution to fail - which hints at a deeper problem.
FWIW I couldn't (quickly) find any other spec using that syntax - so
perhaps it's not important.
cheers,
Iain
