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21 id D642768055; Wed, 18 Apr 2012 18:40:42 +0300 (EEST)
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22 From: Tomi Ollila <tomi.ollila@iki.fi>
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23 To: David Bremner <david@tethera.net>,
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24 Felipe Contreras <felipe.contreras@gmail.com>
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25 Subject: Re: [PATCH] vim: simplify build
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26 In-Reply-To: <871unlgk7h.fsf@zancas.localnet>
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27 References: <1334751115-7216-1-git-send-email-felipe.contreras@gmail.com>
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28 <m2ty0hxk0p.fsf@guru.guru-group.fi>
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29 <CAMP44s3wmEnP=iMQY0gvNKPNAQnMVgCGmkqqaD+L3Fd8nhnMGQ@mail.gmail.com>
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30 <871unlgk7h.fsf@zancas.localnet>
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36 Date: Wed, 18 Apr 2012 18:40:42 +0300
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55 On Wed, Apr 18 2012, David Bremner <david@tethera.net> wrote:
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57 > Felipe Contreras <felipe.contreras@gmail.com> writes:
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58 >>> If this is not an issue, then LGTM.
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60 >> I don't know, I have always used $(PWD), unless anybody else prefers
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61 >> $(CURDIR), I'll push that.
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63 > I think CURDIR is better; if only because it is the standard (GNU) make
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64 > way of doing things [1]. I'm not sure if there is a functional
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65 > difference or not. At least CURDIR definitely works with make -C [2]
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67 I read some web pages and then did an experiment; GNU make (v 3.77+)
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68 has builtin variable $(CURDIR). $(PWD) gets value from environment:
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70 doing the following:
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72 $ cat > foo.mk <<EOF
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74 pwd=`pwd`; echo $pwd
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78 $ PWD= make -f foo.mk
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79 pwd=`pwd`; echo $pwd
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86 $ make -C too -f foo.mk
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87 make: Entering directory `/home/too'
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88 pwd=`pwd`; echo $pwd
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94 make: Leaving directory `/home/too'
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97 So, most portable option would be using pwd=`pwd`; echo $pwd
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98 construct in the makefile. Next option would be using $(CURDIR)
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99 and it works with -C (and with original bourne shell which does
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100 not manage $PWD). That is GNU make (v 3.77+) spesific but the makefiles
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101 use GNU make constructs elsewhere too.
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109 > [1]: http://www.gnu.org/software/make/manual/make.html#Recursion
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110 > [2]: http://www.gnu.org/software/make/manual/make.html#Options-Summary
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111 > _______________________________________________
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112 > notmuch mailing list
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113 > notmuch@notmuchmail.org
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114 > http://notmuchmail.org/mailman/listinfo/notmuch
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