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Date: Thu, 2 Oct 2003 17:02:58 +0300
From: Alexander Bokovoy <a.bokovoy@sam-solutions.net>
To: ALT Devel discussion list <devel@altlinux.ru>
Subject: Re: [devel] ccache support in gcc-common
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On Tue, Sep 30, 2003 at 08:58:30PM +0400, Dmitry V. Levin wrote:
> On Tue, Sep 30, 2003 at 07:48:29PM +0300, Alexander Bokovoy wrote:
> > On Tue, Sep 30, 2003 at 08:43:09PM +0400, Dmitry V. Levin wrote:
> [...]
> > > Идея красивая, осталось только её реализовать.
> > > Желающие есть?
> > в /etc/rpm/macros.d/ccache? Так я это реализую в ccache-2.3-alt1.
> 
> Это я уже понял. :)
> 
> > Или ты про %build_add_variable_expand ? 
> 
> Про него.
Пожалуйста:

%_variable_expand_list %nil
%set_variable_expand() %global _variable_expand_list %* ^
%add_variable_expand() %global _variable_expand_list %_variable_expand_list %* ^
%___pre_variable_extender() %{expand:%(echo %_variable_expand_list | \
		while read -d^ var1 var2 ; do \
			echo -e "\\tunset $var2 ||:\\\\" ; \
			echo -e "\\t%%{?$var1:export $var2=\\\"%$var1\\\"}\\\\"\
		done \
		)}

Результат работы:

$ rpm -v --define '__ccache_use 1' --define '__ccache_dir /foo/bar' --eval '
%add_variable_expand __ccache_use GCC_USE_CCACHE
%add_variable_expand __ccache_dir CCACHE_DIR
%add_variable_expand __ccache_false GCC_FALSE_CCACHE
%___pre_variable_extender'

         unset GCC_USE_CCACHE ||:\
         export GCC_USE_CCACHE="1"\
         unset CCACHE_DIR ||:\
         export CCACHE_DIR="/foo/bar"\
         unset GCC_FALSE_CCACHE ||:\
	 \

-- 
/ Alexander Bokovoy
---
QOTD:
	"I used to be an idealist, but I got mugged by reality."