On Wed, 10 Jul 2019, Sébastien Hinderer wrote:
Dear all,
I'd need to compute the absolute path of srcdir in a portable way (it's
okay if it includes symlinks).
Currently I use
abssrcdir=$(cd "${srcdir}"; echo $PWD)
which seems to work fine.
Is that considered portable enough?
It appears that $PWD is a shell extension, so I don't think so. Even
the shell syntax being used to execute the external command is not
very portable. In addition to that, if the cd "${srcdir}" fails, it
would then capture the wrong directory.
This syntax is proven to be portable and reliable:
abssrcdir="`cd $srcdir && pwd`"
Bob
--
Bob Friesenhahn
bfriesen@xxxxxxxxxxxxxxxxxxx, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
Public Key, http://www.simplesystems.org/users/bfriesen/public-key.txt
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