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Re: specs question.

From: Ian Lance Taylor <iant at google dot com>
To: IainS <developer at sandoe-acoustics dot co dot uk>
Cc: GCC Development <gcc at gcc dot gnu dot org>
Date: Mon, 12 Apr 2010 16:22:04 -0700
Subject: Re: specs question.
References: <6807833B-8AB9-468B-9936-09025C700DF7@sandoe-acoustics.co.uk> <mcrsk701f7u.fsf@dhcp-172-17-9-151.mtv.corp.google.com> <DAC85AB3-3F05-481C-AB57-A563BC3E6230@sandoe-acoustics.co.uk>

IainS <developer@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.

Ian

Follow-Ups:
- Re: specs question.
  - From: IainS
- Re: specs question.
  - From: IainS

References:
- specs question.
  - From: IainS
- Re: specs question.
  - From: Ian Lance Taylor
- Re: specs question.
  - From: IainS

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