Commit f10fddeb authored Apr 19, 2018 by Sebastian Bøe Committed by Anas Nashif Apr 19, 2018

cmake: toolchain: Improve error feedback when toolchain is not found



Improve the error feedback when the toolchain is not found.

Currently, for some setups, presumably primarily SDK-less setups,
users can get an error message like this for certain types of
misconfigurations:

CMake Error at zephyr/cmake/extensions.cmake:984 (message):
  No such file or directory: CMAKE_READELF: 'CMAKE_READELF-NOTFOUND'
Call Stack (most recent call first):
  zephyr/cmake/compiler/gcc.cmake:14 (assert_exists)
  zephyr/cmake/toolchain.cmake:38 (include)
  zephyr/cmake/app/boilerplate.cmake:243 (include)
  CMakeLists.txt:1 (include)

This commit will improve the error feedback to give a explanation for
what kind of failure has occured and will also dump relevant variables
to ease debugging.

This fixes #7075

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>

parent 678a6e02

cmake/compiler/gcc.cmake

+9 −1

Original line number	Diff line number	Diff line
		@@ -11,7 +11,15 @@ find_program(CMAKE_READELF ${CROSS_COMPILE}readelf PATH ${TOOLCHAIN_HOME} NO_
		find_program(CMAKE_GDB ${CROSS_COMPILE}gdb PATH ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
		find_program(CMAKE_NM ${CROSS_COMPILE}nm PATH ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)

		assert_exists(CMAKE_READELF)
		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()

		if(CONFIG_CPLUSPLUS)
		set(cplusplus_compiler ${CROSS_COMPILE}g++)

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