Add pytest test coverage for cmakev2 build system examples that had
none.
CMakeLists.txt fixes required to enable testing:
conditional_component and plugins: added idf_build_generate_flasher_args()
since these use the low-level build API (idf_build_executable /
idf_flash_binary) which unlike idf_project_default() does not call it
automatically. Without it, flasher_args.json was missing from the build
output and pytest-embedded could not initialize the DUT.
multi_binary: both app1 and app2 were registered in the global flash
target via idf_flash_binary(...FLASH), creating a duplicate key at offset
0x10000 in the flasher_args.json generator expression and preventing the
file from being generated. Fixed by removing FLASH from app2's call so
only app1 is registered in the global flash target. idf_build_generate_flasher_args()
now produces a valid flasher_args.json with app1 as the default app binary.
The test patches the binary path to app2.bin when testing the second app.
This commit adds a new example at
examples/build_system/cmakev2/features/multi_binary to
demonstrate the cmakev2 ability to build multiple binaries in a single
CMake project.
Sudeep Mohanty