Christopher Collins created MYNEWT-323:
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Summary: Newt - Build options precedence hierarchy
Key: MYNEWT-323
URL: https://issues.apache.org/jira/browse/MYNEWT-323
Project: Mynewt
Issue Type: Bug
Components: t, Newt
Reporter: Christopher Collins
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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