Using both c stdio and zephyr stdio

RE: Using both c stdio and zephyr stdio

nateyoung — Mon, 18 Apr 2022 04:29:16 GMT

Hi, the fix I found was to set

CONFIG_NEWLIB_LIBC=y in proj.conf to enable use of the non-minimal c functionality. Although I ended up not needing this functionality. Thank you for the help.

RE: Using both c stdio and zephyr stdio

Susheel Nuguru — Mon, 04 Apr 2022 12:27:35 GMT

Those libraries seems to be outside the scope our solutions so I am guessing that you need to install/include this library from other sources. I can see that MinGW or GLFW might have these libraries included. Once you have install them,

RE: Using both c stdio and zephyr stdio

nateyoung — Wed, 30 Mar 2022 19:20:29 GMT

Hello, thank you for the reply. I have looked into your suggestion. Do you mean to follow the application_development example and import the dr_wav.h external library or import the C stdio.h as an external library? I have tried both but am not sure where to point the src_dir because in the case of dr_wav.h there is no other source, and in the case of the C standard lib I am not sure where to find the actual definitions in the toolchain.

RE: Using both c stdio and zephyr stdio

Susheel Nuguru — Mon, 28 Mar 2022 10:44:38 GMT

These seems like linker error. So most likely the compiler found the declarations from your C files, but is not able to find the definitions of those while linking.
Check the example \zephyr\samples\application_development\external_lib and check the CMakeLists.txt file. You will have to use add_library to import external library and not just the header files.