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Top Forums UNIX for Dummies Questions & Answers Make - two target produced by one recipe Post 302488853 by ybelenky on Tuesday 18th of January 2011 03:07:19 PM
Old 01-18-2011
Make - two target produced by one recipe

Suppose executable X produces files A and B from nothing, Y produces C from A, Z produces D from B, and my final goal is to produce C and D. I wrote the following makefile:

.PHONY: all
all: C D

C: A
Y A
D: B
Z B
A B:
X
This makefile seems to reflect all dependencies, as it should be. However if I delete A and B, then X will be executed twice.

How do I fix this file so that it still reflects all dependencies, but in any case executes X only once?

Thanks in advance
 

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ACTDIAG(1)						      General Commands Manual							ACTDIAG(1)

NAME
actdiag - generate activity-diagram image file from spec-text file. SYNOPSIS
actdiag [options] files DESCRIPTION
This manual page documents briefly the actdiag commands. actdiag is a program that generate activity-diagram image file from spec-text file. OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. For a complete description, see the Info files. -h, --help show this help message and exit -a, --antialias Pass diagram image to anti-alias filter -c FILE, --config=FILE read configurations from FILE -o FILE write diagram to FILE -f FONT, --font=FONT use FONT to draw diagram -s, ----separate Separate diagram images for each group (SVG only) -T TYPE Output diagram as TYPE format SEE ALSO
The programs are documented fully by http://tk0miya.bitbucket.org/actdiag/build/html/index.html AUTHOR
actdiag was written by Takeshi Komiya <i.tkomiya@gmail.com> This manual page was written by Kouhei Maeda <mkouhei@palmtb.net>, for the Debian project (and may be used by others). June 5, 2011 ACTDIAG(1)
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