[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5618 configure: Fix tests for compiler warning flags.

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• Description has changed:

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• assigned_to: Werner LEMBERG
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• Patch: new --> review

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[issues:#5618] configure: Fix tests for compiler warning flags.

Status: Started
Created: Sat Nov 23, 2019 09:03 PM UTC by Werner LEMBERG
Last Updated: Sun Nov 24, 2019 01:08 PM UTC
Owner: Werner LEMBERG

AC_LANG_PROGRAM ignores compiler warnings. This behaviour made the tests
always true and thus without any effect. We now add -Werror to enforce an
error in case the warning flag is not known.

To make that work it is also necessary to compile confdefs.h without
warnings; we add a hack to undefine macro PACKAGE_NAME, which gets defined
twice for historical reasons.

https://codereview.appspot.com/551210043

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