Also add some explanation about configuring the project in the README
Previously with the default build-esp32.sh script, the build directory was
deleted and recreated so the project would always be built with default config.
Use rev-parse to get the HEAD directory instead of manually looking for
it. This method works in the main repository, worktrees and submodules.
Closes https://github.com/espressif/esp-idf/issues/4136
Changes argument parsing mechanism from argparse to a new one, that provides better support for extensions and options that are only applicable to specific subcommands,
Breaking changes:
1. All global options should go before subcommands, i.e. `idf.py build -C ~/some/project` will not work anymore, only `idf.py -C ~/some/project build` is acceptable
2. To provide multiple values to an option like `--define-cache-entry` it's necessary to repeat option many times, i.e. `idf.py -D entry1 entry2 entry3` will not work, right way is: `idf.py -D entry1 -D entry2 -D entry3`
At the moment there are 3 options like this: `--define-cache-entry` in base list and `--test-components` and `--test-exclude-components` in the unit test extensions
3. Drops `defconfig` and `bootloader-clean` subcommands
Closes https://github.com/espressif/esp-idf/issues/3570
Closes https://github.com/espressif/esp-idf/issues/3571
1. separate rom include files and linkscript to esp_rom
2. modefiy "include rom/xxx.h" to "include esp32/rom/xxx.h"
3. Forward compatible
4. update mqtt
Linker script generator produces build/esp32/esp32.common.ld from
components/esp32/ld/esp32.common.ld.in
This works fine until IDF is downgraded to V3.1 which uses components/esp32/ld/esp32.common.ld and
doesn't track build/esp32/esp32.common.ld at all.
At this point, the linker runs in the build/esp32 directory and "-T esp32.common.ld" picks up the
linker script generated .ld file, which causes mis-builds.
As reported on forums: https://esp32.com/viewtopic.php?f=13&t=9684&p=40105
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.
When IDF_PATH is not set by the user, cmake infers the same through
other means and sets it as an environment variable. However, some
sub-invocation of cmake may not see this variable as it is not set
in the parent. This change adds a custom command for exporting IDF_PATH
just before invoking ldgen so that IDF_PATH can be used in Kconfig
without any errors.
