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ax_prog_cp_s

Synopsis

AX_PROG_CP_S

Description

Check how to make a copy by creating a symbolic link to the original - it defines the variable CP_S for further use, which you should in fact treat like it used to be with be LN_S. The actual value is assured to be either LN_S (if the filesystem supports symbolic links) or CP (if the filesystem does not know about symbolic links and you need a copy of original file to have the same text in both places). In a gnu environment it will simply set CP_S="cp -s" since the gnu "cp"-command has the "-s" flag. You shall not try to use this command on directories since it would require a "-r" in the case of a copy that is not supported explicitly here. (I’m not sure if some "cp"-commands out there would barf at usage of "-r" on a normal file).

Use CP_S to create a copy of read-only data - if your filesystem supports it then a symbolic link is created - a process that is quicker and space-saving. However, if the target fs does not support symbolic links, just copy the data. Unlike ac_prog_ln_s this macro will never fail to set the CP_S ac_subst to something that works.

Source Code

Download the latest version of ax_prog_cp_s.m4 or browse the macro’s revision history.

License

Copyright © 2008 Guido U. Draheim guidod@gmx.de

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.

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