Failure building the zephyr\tests\subsys\cpp\libcxx project

[awe-devasc]

Not finding the STL include files ... this is the build error message:
/zephyr/tests/subsys/cpp/libcxx/src/main.cpp:7:10: fatal error: array: No such file or directory
7 | #include
| ^~~~~~~
compilation terminated.

ARM gnu eabi installed and the STL files are there ...
in the directory ... C:\gnu_arm_embedded\arm-none-eabi\include\c++\10.3.1
Any advice as to how to get this test working would be much appreciated.

[stephanosio]

It looks like you are trying to build tests/subsys/cpp/libcxx manually (i.e. not via twister).

zephyr/tests/subsys/cpp/libcxx/testcase.yaml

Lines 5 to 13 in 6112840

	cpp.libcxx.newlib:
	filter: TOOLCHAIN_HAS_NEWLIB == 1
	toolchain_exclude: xcc
	min_flash: 54
	tags: cpp
	extra_configs:
	- CONFIG_NEWLIB_LIBC=y
	- CONFIG_NEWLIB_LIBC_NANO=n
	- CONFIG_EXCEPTIONS=y

In that case, you need to make sure that the correct configs are set:
-DCONFIG_NEWLIB_LIBC=y
-DCONFIG_NEWLIB_LIBC_NANO=n
-DCONFIG_EXCEPTIONS=y

[awe-devasc]

Thank you this all makes sense ... and it worked ...
I have not yet explored twister ...
What would be the correct procedure for using twister with this particular example ?
Thanks for all your help and advice
Andrew

[stephanosio]

What would be the correct procedure for using twister with this particular example ?

You can try the following from the top of the Zephyr source tree:

scripts/twister -v -N -p [BOARD NAME] -T tests/subsys/cpp/libcxx

e.g. with qemu_cortex_m3:

scripts/twister -v -N -p qemu_cortex_m3 -T tests/subsys/cpp/libcxx