Unknown CMake command "pico_generate_pio_header" about pico-examples

[jackcampbell19]

For the next person who run into this issue here is an example of the other lines you need:

cmake_minimum_required(VERSION 3.12)
include(pico_sdk_import.cmake)

project(stepper_prog VERSION 1.0.0)

add_executable(stepper_prog)

target_sources(stepper_prog PRIVATE source.c)
target_link_libraries(stepper_prog PRIVATE pico_stdlib hardware_pio)

pico_sdk_init()

pico_generate_pio_header(stepper_prog ${CMAKE_CURRENT_LIST_DIR}/stepper.pio)

pico_add_extra_outputs(stepper_prog)

[jackcampbell19]

For the next person who run into this issue here is an example of the other lines you need:

This is all explained in Chapter 8 of https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf ?

@lurch Given the odd phrasing of your reply you are either:

1. Asking the question Is this explained in https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf? to which the answer is: Yes! It is, specifically pages 30-31 :)
2. Or you are trying to be snarky. Clearly multiple people have been "led astray" (as the original poster puts it) by the Pico C/C++ SDK Documentation and I had personally been looking for an example to help me understand the full picture. Perhaps in the future you could phrase your replies in a more helpful way, such as Full documentation for setting up a project can be found in Chapter 8 of https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf.

[kilograham]

What steps did you use to try to build; what was the full output?

[rwcooper33]

Here is what I did. $ mkdir build $ cd build $ pwd /home/rwcooper/pico/pico-examples/pio/hello_pio/build $ cmake .. -- The C compiler identification is GNU 8.3.0 -- The CXX compiler identification is GNU 8.3.0 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done CMake Error at CMakeLists.txt:3 (pico_generate_pio_header): Unknown CMake command "pico_generate_pio_header". CMake Warning (dev) in CMakeLists.txt: No cmake_minimum_required command is present. A line of code such as cmake_minimum_required(VERSION 3.13) should be added at the top of the file. The version specified may be lower if you wish to support older CMake versions for this project. For more information run "cmake --help-policy CMP0000". This warning is for project developers. Use -Wno-dev to suppress it.

…

-- Configuring incomplete, errors occurred! See also "/home/rwcooper/pico/pico-examples/pio/hello_pio/build/CMakeFiles/CMakeOutput.log".

On Jan 23, 2021, at 6:37 PM, Graham Sanderson ***@***.***> wrote: What steps did you use to try to build; what was the full output? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#10 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ASSLXUSXUYLWQY6URUJLWNTS3NTT7ANCNFSM4WQDAECA>.

[rwcooper33]

I realize what I did wrong. I was following the instructions on pages 33 and 34 of the Pico C/C++ SDK document and was led astray. The CMakeFiles.txt at this level is not complete. In order to make it work the way I was doing it I would have to add additional instructions to the CMakeFiles.txt. Perhaps the real issue is with the instructions on pages 33 and 34.

[lurch]

For the next person who run into this issue here is an example of the other lines you need:

This is all explained in Chapter 8 of https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf ?