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cmake: Fix psram workaround compiler flag application

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Previously, this compiler flag was not being applied
regardless of CONFIG_SPIRAM_CACHE_WORKAROUND setting.

Explanation: add_compile_options() only applies to
source files added after the function is run, or in
subdirectories added after the function is run. In
this case, no new source files were being added after
this function was run.
This commit is contained in:
Angus Gratton
2019-02-22 12:20:11 +11:00
committed by bot
parent 3952d25a99
commit da390618c2
7 changed files with 30 additions and 26 deletions
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docs/en/api-guides/build-system.rst
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@@ -614,6 +614,7 @@ $(COMPONENT_LIBRARY) for the project make process to link into the app binary.
(Actually, even this is not strictly necessary - if the COMPONENT_ADD_LDFLAGS variable
is overridden then the component can instruct the linker to link other binaries instead.)
.. note:: When using an external build process with PSRAM, remember to add ``-mfix-esp32-psram-cache-issue`` to the C compiler arguments. See :ref:`CONFIG_SPIRAM_CACHE_WORKAROUND` for details of this flag.
.. _esp-idf-template: https://github.com/espressif/esp-idf-template
.. _GNU Make Manual: https://www.gnu.org/software/make/manual/make.html