Difference between revisions of "Cmake"
From Wiki at Neela Nurseries
m (→^ To print variables in cmake) |
m (→^ To print variables in cmake) |
||
| Line 67: | Line 67: | ||
Note: I'm using cmake > 3.14 | Note: I'm using cmake > 3.14 | ||
| + | ---------- ---------- --------- --------- --------- -------- | ||
| + | |||
| + | A modified generic.cmake file, changes address one or more unset variables and solved build error on newest Zephyr work station: | ||
| + | |||
| + | <pre> | ||
| + | # SPDX-License-Identifier: Apache-2.0 | ||
| + | |||
| + | set_ifndef(CC gcc) | ||
| + | |||
| + | ## 2022-03-03 - Ted moving this cmake function call beyond locally | ||
| + | ## added variable assignements: | ||
| + | ## | ||
| + | ## find_program(CMAKE_C_COMPILER ${CROSS_COMPILE}${CC} PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH) | ||
| + | |||
| + | # | ||
| + | ## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| + | ## 2022-02-08 Reference https://cmake.org/cmake/help/latest/command/message.html | ||
| + | ## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| + | # | ||
| + | message(NOTICE "*** zztop 1 *** building with user configuration var ZEPHYR_TOOLCHAIN_VARIANT set to '${ZEPHYR_TOOLCHAIN_VARIANT}'") | ||
| + | message(NOTICE "*** zztop 2 *** internal variable CROSS_COMPILE set to '${CROSS_COMPILE}'") | ||
| + | message(NOTICE "*** zztop 3 *** internal variable TOOLCHAIN_HOME set to '${TOOLCHAIN_HOME}'") | ||
| + | |||
| + | ## 2022-03-03 THU - Not ***ing sure why we need to set these today: | ||
| + | set(ZEPHYR_TOOLCHAIN_VARIANT gnuarmemb) | ||
| + | set(GNUARMEMB_TOOLCHAIN_PATH /opt/gcc-arm-none-eabi-10.3-2021.10) | ||
| + | set(TOOLCHAIN_HOME /opt/gcc-arm-none-eabi-10.3-2021.10) | ||
| + | ## ^^^ These three cmake variable settings not sufficient, trying another based on working but different | ||
| + | ## toolchain on host ind: | ||
| + | set(CROSS_COMPILE /opt/gcc-arm-none-eabi-10.3-2021.10/bin/arm-none-eabi-) | ||
| + | ## | ||
| + | ## $ ls /opt/gcc-arm-none-eabi-10.3-2021.10/bin/arm-none-eabi-* | ||
| + | ## | ||
| + | |||
| + | message(NOTICE "*** zztop 4 *** building with user configuration var ZEPHYR_TOOLCHAIN_VARIANT set to '${ZEPHYR_TOOLCHAIN_VARIANT}'") | ||
| + | message(NOTICE "*** zztop 5 *** internal variable CROSS_COMPILE set to '${CROSS_COMPILE}'") | ||
| + | message(NOTICE "*** zztop 6 *** internal variable TOOLCHAIN_HOME set to '${TOOLCHAIN_HOME}'") | ||
| + | |||
| + | |||
| + | find_program(CMAKE_C_COMPILER ${CROSS_COMPILE}${CC} PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH) | ||
| + | |||
| + | if(CMAKE_C_COMPILER STREQUAL CMAKE_C_COMPILER-NOTFOUND) | ||
| + | message(FATAL_ERROR "Zephyr was unable to find the toolchain. Is the environment misconfigured? | ||
| + | User-configuration: | ||
| + | ZEPHYR_TOOLCHAIN_VARIANT: ${ZEPHYR_TOOLCHAIN_VARIANT} | ||
| + | Internal variables: | ||
| + | CROSS_COMPILE: ${CROSS_COMPILE} | ||
| + | TOOLCHAIN_HOME: ${TOOLCHAIN_HOME} | ||
| + | ") | ||
| + | endif() | ||
| + | |||
| + | execute_process( | ||
| + | COMMAND ${CMAKE_C_COMPILER} --version | ||
| + | RESULT_VARIABLE ret | ||
| + | OUTPUT_QUIET | ||
| + | ERROR_QUIET | ||
| + | ) | ||
| + | if(ret) | ||
| + | message(FATAL_ERROR "Executing the below command failed. Are permissions set correctly? | ||
| + | '${CMAKE_C_COMPILER} --version' | ||
| + | " | ||
| + | ) | ||
| + | endif() | ||
| + | </pre> | ||
Revision as of 23:57, 29 June 2022
Zephyr RTOS building blocks :: Device Tree Source :: Kconfig :: cmake :: `west` manifest files
2021-08-06
Starting a page for cmake notes here. Links to cmake site:
- https://cmake.org/overview/
- https://cmake.org/examples/ . . . very limited, need other resources
Longer guides:
A Nordic Semi document on `cmake` and its role in the build process of Zephyr based applications:
2021-08-17 - search for cmake / Zephyr means to add sources to a Zephyr based project:
Contents
^ To print variables in cmake
Note that the following post has a cool answer which involves a cmake macro to print all variables known to a given cmake invocation or use, and also a more simple answer to print one specific variable:
^ To Specify Source Dirs and Library Directories to Linker
^ Install latest version of cmake
^ Zephyr Threads Tutorial by Maksim Drachov
