make: test SERIAL for sam0 boards only if required #10840
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If SERIAL is given as environment variable to the build/make system only test/check the SERIAL if needed for certain make goals, i.e., flash, flash-only, debug and debug-server. Otherwise ignore it and simply build. fixes RIOT-OS#10367
smlng
added
Type: enhancement
cladmi
suggested changes
Jan 23, 2019
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This is not the way it should be handled. It is evaluated because PORT or FFLAGS is evaluated even when not needed and this should be removed.
When using deferred variables only, and not immediate variables, make will only evaluate the expressions when needed so when flash/debug/term will be used.
This means removing all immediate usages and export the value as it is not needed.
An effort has been started in this direction in #10440 as a split from #10342
19 tasks
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I added a tracking PR for removing useless exports and immediate evaluation. |
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closing as per @cladmi commented |
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Contribution description
If SERIAL is given as environment variable to the build/make system only
test/check the SERIAL if needed for certain make goals, i.e., flash,
flash-only, debug and debug-server. Otherwise ignore it and simply build.
Testing procedure
as described in #10367 run following command on master and with this PR
on master this will not build but fail, with this PR it builds as expected as SERIAL is not required and can be safely ignored.
Issues/PRs references
fixes #10367