[linux] Driver component no longer builds (IDFGH-9375)

[higaski]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.1-dev-3296-g76433e4cb2

Operating System used.

Linux

How did you build your project?

Command line with CMake

If you are using Windows, please specify command line type.

None

What is the expected behavior?

The driver component no longer builds when setting linux as target.

What is the actual behavior?

CMake produces an error when trying to build the project

CMake Error at /home/vinci/esp/esp-idf/tools/cmake/component.cmake:479 (add_library):
  Cannot find source file:

    /home/vinci/esp/esp-idf/components/bootloader_support/src/bootloader_random_linux.c

Steps to reproduce.

1. Copy hello_world_linux_compatible
2. Add driver to requirements in main/CMakeLists.txt
   idf_component_register(SRCS "hello_world_main.c" INCLUDE_DIRS "" REQUIRES driver)
3. idf.py --preview set-target linux
4. idf.py build

Build or installation Logs.

No response

More Information.

No response

[ESP-Marius]

Hi @higaski

As mentioned here, driver is not supported for simulation. You could add the cmock driver mocks we have by adding

list(APPEND EXTRA_COMPONENT_DIRS "$ENV{IDF_PATH}/tools/mocks/driver/")

to you project CMake file, which would allow you to link the driver (mock) component.

If you describe what you are trying to achieve by linking the driver component then maybe I can suggest a better suited approach for you.

[higaski]

I just need the driver headers to not brick a x86 build, that's all.

I've previously been using a combination of the following two lines:

list(APPEND EXTRA_COMPONENT_DIRS tests $ENV{IDF_PATH}/tools/mocks/driver)

and

idf_component_register(
  ...
  REQUIRES
  driver
  ...
)

But that stopped working during the last couple of weeks. It produces the following CMake error

[0/1] Re-running CMake...-- Project is not inside a git repository, or git repository has no commits; will not use 'git describe' to determine PROJECT_VER.
-- Building ESP-IDF components for target linux
-- building DRIVER MOCKS (only SPI, I2C and GPIO driver)
-- Project sdkconfig file /home/vinci/Develop/VSCode/hello_world_linux_compatible/sdkconfig
-- building DRIVER MOCKS (only SPI, I2C and GPIO driver)
CMake Error at /home/vinci/esp/esp-idf/tools/cmake/component.cmake:313 (message):
  Include directory
  '/home/vinci/esp/esp-idf/components/driver/include/driver' is not a
  directory.
Call Stack (most recent call first):
  /home/vinci/esp/esp-idf/tools/cmake/component.cmake:481 (__component_add_include_dirs)
  /home/vinci/esp/esp-idf/tools/cmake/component.cmake:558 (idf_component_register)
  /home/vinci/esp/esp-idf/tools/mocks/driver/CMakeLists.txt:15 (idf_component_mock)


-- Configuring incomplete, errors occurred!
See also "/home/vinci/Develop/VSCode/hello_world_linux_compatible/build/CMakeFiles/CMakeOutput.log".
FAILED: build.ninja 

Probably the folder structure of the component has changed but no one thought to adjust the mock? The driver mock components CMake sets an include_dirs variable like this

set(include_dirs
    "${original_driver_dir}/include"
    "${original_driver_dir}/include/driver"
    "${CMAKE_CURRENT_SOURCE_DIR}/../hal/include"
    "${CMAKE_CURRENT_SOURCE_DIR}/../esp_hw_support/include")

But the "/include/driver" folder doesn't seem to exist at the current master?

[ESP-Marius]

You are right, someone recently reorganized the driver and broke this. We'll take a look at it.

Meanwhile, another option when building for the linux target is to make requirements dynamic depending on the target, e.g. something like:

idf_build_get_property(target IDF_TARGET)

if(${target} STREQUAL "linux")
    set(REQS "")
else()
    list(APPEND REQS driver)
endif()

idf_component_register(...
                  REQUIRES ${REQS})

Of course, this may require some changes to your component as well if you are including/calling any of the driver functions.

[Silur]

list(APPEND EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/tools/mocks/driver) still doesnt work on linux simulation even after b68b0ea
cloning a fresh copy and building the hello-world with the preview target results in the same error

[higaski]

Works for me with ESP-IDF v5.2-dev-1890-g28167ea5a3

Make sure to run idf.py --preview set-target linux before trying to build it

[Silur]

idf.py --preview set-target linux
halts with:

Cannot find source file:

    <redacted>/esp-idf/components/esp_mm/port/linux/ext_mem_layout.c

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .mpp .m .M .mm .ixx .cppm
  .ccm .cxxm .c++m .h .hh .h++ .hm .hpp .hxx .in .txx .f .F .for .f77 .f90
  .f95 .f03 .hip .ispc
Call Stack (most recent call first):

AFAIK there is no esp_mm mock?

[ESP-Marius]

Still works for me as well. Can you provide a bit more details what you are doing?

E.g. which hello world example? Linux or the normal one? Any modifications other than what you mentioned?