SDK • Re: project can't find my library source files in subdirectory (cmake issues?)

Code:

breaker@ace:~/pico$ ls -R tmp117tmp117:1_temp_result/  2_alerts/  3_set_offset/  CMakeLists.txt  pico_sdk_import.cmake  src/  tmp117_examples.txttmp117/1_temp_result:CMakeLists.txt  temp_result.ctmp117/2_alerts:CMakeLists.txt  alerts.ctmp117/3_set_offset:CMakeLists.txt  set_offset.ctmp117/src:CMakeLists.txt  tmp117.c  tmp117.h  tmp117_registers.h

Code:

# Minimum required CMake versioncmake_minimum_required(VERSION 3.21)# Pull in SDK (must be before project)include(pico_sdk_import.cmake)include(CMakePrintHelpers)project(tmp117_examples C CXX ASM)set(CMAKE_C_STANDARD 11)set(CMAKE_CXX_STANDARD 17)if (PICO_SDK_VERSION_STRING VERSION_LESS "1.3.0")    message(FATAL_ERROR "Raspberry Pi Pico SDK version 1.3.0 (or later) required. Your version is ${PICO_SDK_VERSION_STRING}")endif()# Initialize the SDKpico_sdk_init()# Add the src directory to include directories# include_directories(${PROJECT_SOURCE_DIR}/src)# message(STATUS "Include Directories: ${CMAKE_INCLUDE_PATH}")add_compile_options(        -Wall                # Enable most warning messages        -Wno-format          # int != int32_t as far as the compiler is concerned because gcc has int32_t as long int        -Wno-unused-function # we have some for the docs that aren't called        )if (CMAKE_C_COMPILER_ID STREQUAL "GNU")   add_compile_options(-Wno-maybe-uninitialized)endif()# Add the src directory to the buildadd_subdirectory(src)# Add example subdirectoriesadd_subdirectory(1_temp_result)add_subdirectory(2_alerts)add_subdirectory(3_set_offset)message(STATUS "root")message(STATUS "Pico SDK path: ${PICO_SDK_PATH}")get_property(dirs3 DIRECTORY PROPERTY INCLUDE_DIRECTORIES)get_property(dirs3 DIRECTORY src PROPERTY INCLUDE_DIRECTORIES)get_property(dirs3 DIRECTORY 1_temp_result PROPERTY INCLUDE_DIRECTORIES)foreach(dir ${dirs3})  message(STATUS "dir=${dir}")endforeach()cmake_print_variables(PROJECT_SOURCE_DIR PROJECT_BINARY_DIR)cmake_print_variables(CMAKE_INCLUDE_PATH)

Code:

# CMakeLists.txt in the src directory# Define a library named 'tmp117_functions'add_library(tmp117_functions    tmp117.c)

Code:

add_executable(temp_result        temp_result.c        )# target_compile_definitions(temp_result PRIVATE PICO_DEFAULT_I2C=0)# pull in common dependencies and additional i2c hardware supporttarget_link_libraries(temp_result PUBLIC tmp117_functions pico_stdlib hardware_i2c pico_printf)# add tmp117_functions library to target's include directoriestarget_include_directories      (temp_result PUBLIC                                 ${PROJECT_BINARY_DIR}                                 ${PROJECT_SOURCE_DIR}/src                                )# enable usb output, disable uart output# pico_enable_stdio_usb(temp_result 1)# pico_enable_stdio_uart(temp_result 0)# create map/bin/hex file etc.pico_add_extra_outputs(temp_result)# add url via pico_set_program_url# example_auto_set_url(temp_result)message(STATUS "1_temp_result")get_property(dirs1 TARGET temp_result PROPERTY INCLUDE_DIRECTORIES)get_property(dirs2 TARGET temp_result PROPERTY INTERFACE_INCLUDE_DIRECTORIES)foreach(dir ${dirs2})  message(STATUS "Interface include directory for temp_result: ${dir}")endforeach()get_property(dirs DIRECTORY PROPERTY INCLUDE_DIRECTORIES)foreach(dir ${dirs})  message(STATUS "dir='${dir}'")endforeach()cmake_print_variables(CMAKE_INCLUDE_PATH)

Code:

breaker@ace:~/pico/tmp117/build$ cd .. && rm -R build && mkdir build && cd build && cmake ..Using PICO_SDK_PATH from environment ('/usr/src/pico-sdk')PICO_SDK_PATH is /usr/src/pico-sdkDefaulting PICO_PLATFORM to rp2040 since not specified.Defaulting PICO platform compiler to pico_arm_gcc since not specified.-- Defaulting build type to 'Release' since not specified.PICO compiler is pico_arm_gcc-- The C compiler identification is GNU 13.2.1-- The CXX compiler identification is GNU 13.2.1-- The ASM compiler identification is GNU-- Found assembler: /usr/src/arm-gnu-toolchain/bin/arm-none-eabi-gcc-- Detecting C compiler ABI info-- Detecting C compiler ABI info - done-- Check for working C compiler: /usr/src/arm-gnu-toolchain/bin/arm-none-eabi-gcc - skipped-- Detecting C compile features-- Detecting C compile features - done-- Detecting CXX compiler ABI info-- Detecting CXX compiler ABI info - done-- Check for working CXX compiler: /usr/src/arm-gnu-toolchain/bin/arm-none-eabi-g++ - skipped-- Detecting CXX compile features-- Detecting CXX compile features - doneBuild type is ReleaseDefaulting PICO target board to pico since not specified.Using board configuration from /usr/src/pico-sdk/src/boards/include/boards/pico.h-- Found Python3: /usr/bin/python3.9 (found version "3.9.18") found components: Interpreter TinyUSB available at /usr/src/pico-sdk/lib/tinyusb/src/portable/raspberrypi/rp2040; enabling build support for USB.BTstack available at /usr/src/pico-sdk/lib/btstackcyw43-driver available at /usr/src/pico-sdk/lib/cyw43-driverPico W Bluetooth build support available.lwIP available at /usr/src/pico-sdk/lib/lwipmbedtls available at /usr/src/pico-sdk/lib/mbedtls-- 1_temp_result-- Interface include directory for temp_result: /home/breaker/pico/tmp117/build-- Interface include directory for temp_result: /home/breaker/pico/tmp117/src-- CMAKE_INCLUDE_PATH=""-- root-- Pico SDK path: /usr/src/pico-sdk-- PROJECT_SOURCE_DIR="/home/breaker/pico/tmp117" ; PROJECT_BINARY_DIR="/home/breaker/pico/tmp117/build"-- CMAKE_INCLUDE_PATH=""-- Configuring done-- Generating done-- Build files have been written to: /home/breaker/pico/tmp117/build

Code:

breaker@ace:~/pico/tmp117/build$ cd 1_temp_result && make[  2%] Creating directories for 'ELF2UF2Build'[  5%] No download step for 'ELF2UF2Build'[  5%] No update step for 'ELF2UF2Build'[  8%] No patch step for 'ELF2UF2Build'[  8%] Performing configure step for 'ELF2UF2Build'-- The C compiler identification is GNU 11.2.0-- The CXX compiler identification is GNU 11.2.0-- Detecting C compiler ABI info-- Detecting C compiler ABI info - done-- Check for working C compiler: /usr/bin/cc - skipped-- Detecting C compile features-- Detecting C compile features - done-- Detecting CXX compiler ABI info-- Detecting CXX compiler ABI info - done-- Check for working CXX compiler: /usr/bin/c++ - skipped-- Detecting CXX compile features-- Detecting CXX compile features - done-- Configuring done-- Generating done-- Build files have been written to: /home/breaker/pico/tmp117/build/elf2uf2[ 10%] Performing build step for 'ELF2UF2Build'[ 50%] Building CXX object CMakeFiles/elf2uf2.dir/main.cpp.o[100%] Linking CXX executable elf2uf2[100%] Built target elf2uf2[ 10%] No install step for 'ELF2UF2Build'[ 10%] Completed 'ELF2UF2Build'[ 10%] Built target ELF2UF2BuildScanning dependencies of target bs2_default[ 10%] Building ASM object pico-sdk/src/rp2_common/boot_stage2/CMakeFiles/bs2_default.dir/compile_time_choice.S.obj[ 13%] Linking ASM executable bs2_default.elf[ 13%] Built target bs2_default[ 16%] Generating bs2_default.bin[ 18%] Generating bs2_default_padded_checksummed.S[ 18%] Built target bs2_default_padded_checksummed_asm[ 21%] Building C object src/CMakeFiles/tmp117_functions.dir/tmp117.c.obj/home/breaker/pico/tmp117/src/tmp117.c:5:10: fatal error: hardware/i2c.h: No such file or directory    5 | #include "hardware/i2c.h"      |          ^~~~~~~~~~~~~~~~compilation terminated.make[2]: *** [src/CMakeFiles/tmp117_functions.dir/build.make:76: src/CMakeFiles/tmp117_functions.dir/tmp117.c.obj] Error 1make[1]: *** [CMakeFiles/Makefile2:1708: src/CMakeFiles/tmp117_functions.dir/all] Error 2make: *** [Makefile:91: all] Error 2

Code:

// tmp117.c#include "tmp117.h"#include "tmp117_registers.h"#include "hardware/i2c.h"#include "pico/printf.h"#include "pico/stdlib.h"#include "pico.h"