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https://issues.apache.org/jira/browse/MYNEWT-323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christopher Collins resolved MYNEWT-323.
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Resolution: Fixed
Assignee: Christopher Collins
Precedence is defined as specified in the ticket description. This feature
applies to the following package settings:
* cflags
* aflags
* lflags
> Newt - Build options precedence hierarchy
> -----------------------------------------
>
> Key: MYNEWT-323
> URL: https://issues.apache.org/jira/browse/MYNEWT-323
> Project: Mynewt
> Issue Type: Bug
> Components: Newt
> Reporter: Christopher Collins
> Assignee: Christopher Collins
> Fix For: v0_10_0
>
>
> When two packages specify conflicting build options, it is undefined which
> one takes effect. Worse, if two packages specify conflicting cflags (e.g.,
> "-DLOG_LEVEL=0" and "-DLOG_LEVEL=1"), gcc reports an error and aborts the
> build.
> We should enforce a well-defined precedence hierarchy. I'm thinking
> something like this (lowest priority first):
> * Library
> * BSP
> * App
> * Target
> In the case of conflicting options, newt should discard all but the highest
> priority. Newt would need to do some simple parsing of cflags to identity
> conflicts.
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