The Linux build was broken after IDF flash API was updated without updating
the Linux stub library in the example. This commit updates the spi_flash stub
library such that:
- The API now matches same API as IDF's spi_flash component
- Links the stub_esp32 library to pull in basic types and defines
Example linux build of the example demonstrates "esp32" and "spi_flash" stub
libraries (roughly analogous to "esp_system" and "spi_flash" components).
This commit moves the "flash_ops.c" file to the "spi_flash" stub library as it
is a flash related funciton.
Also renamed the header to "esp_flash.h" (in order to match current header name
in IDF). This is a prerequisite to fixing the linux build of this example.
The build-esp32p4.sh and run-esp32p4.sh scripts are not symbolic links to the
base scripts, leading to a "permission denied" error. This commit changes their
types to symbolic links, in line with the other targets.
This updates the minimal supported version of CMake to 3.16, which in turn enables us to use more CMake features and have a cleaner build system.
This is the version that provides most new features and also the one we use in our latest docker image for CI.
After refactoring the target components (e.g. esp32) no longer contained any real functionality.
What remained in these components have been moved elsewhere and the component itself deleted from the
build system.
This commit updates the visibility of various header files and cleans up
some unnecessary inclusions. Also, this commit removes certain header
include paths which were maintained for backward compatibility.
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.
GCC prefixes underscore on symbol names on macOS, and so the set
undefined symbol `-u app_main` won't work. However, this is unecessary,
as the source file that defines it is specified directly to the
executable, and not through a static library.
Closes https://github.com/espressif/esp-idf/issues/4168
