[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5013 Fix scripts for environments where "set -ux" carries over

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Passes make, make check and a full make doc

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[issues:#5013] Fix scripts for environments where "set -ux" carries over

Status: Started
Created: Fri Dec 16, 2016 12:18 PM UTC by Masamichi Hosoda
Last Updated: Fri Dec 16, 2016 12:18 PM UTC
Owner: Masamichi Hosoda

Fix scripts for environments where "set -ux" carries over

Normally, in Bourne shell scripts,
"set -ux" does not carry over to child processes.
However, under some conditions, it carries over to child processes.
(E.g. environment variable SHELLOPTS exists.)

If "set -ux" in smart-autogen.sh carries over to the child processes,
autoconf fails.

In order to avoid the issue,
this commit makes smart-autogen.sh and smart-configure.sh use
"set +ux" to cancel the effect of "set -ux"
just before invoking the child process.

Likewise, this commit also removes "set -e"
for avoiding "set -e" carrying over, and adds alternative error handling.

http://codereview.appspot.com/319870043

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