Compiler/CODECOMPOSER: CGT-C6000_8.3. C++14 Mode. Errors in libcxx/system_error. Unkonwn errors macros.

Andrey,

Thank you for attaching the project file. This helps us to reproduce the issue. Unfortunately, the TI-POSIX support was not validated with C++, so we missed this issue. I assume you want the TI-POSIX support, or maybe you want re-entrant support for errno, which is why you have /ti/posix/ccs on your include path.

If you don't need TI-POSIX support, or re-entrant support, the simplest solution it to remove /ti/posix/ccs from your include path. Simply delete the following line from your project properties include path:

${xdc_find:ti/posix/ccs:${ProjName}}

However, if you want TI-POSIX support, you can use the following fix to move past the build error. This is an unofficial fix, I am still working on the final solution and will update this thread to keep you posted. For now edit the following file in your SYS/BIOS installation:

/bios_6_73_01_01/packages/ti/posix/ccs/errno.h

Look for the following code near the middle of the file:

/*  TI toolchain check
 *
 *  TI DSP Compiler
 */
#elif defined(__TMS320C6X__)

/* include toolchain's header file */
#include <../include/errno.h>

Modify the include statement above as follows:

#include_next <errno.h>

This should resolve the build error.

You are probably interested in knowing what is going on. POSIX support is implemented from several places. The compiler, run-time library, and kernel all contribute to POSIX. When adding the kernel support for POSIX, we need to honor the contributions made by the compiler, and simply fill in the missing pieces. For example, the compiler provides errno.h with some common error codes. However, we need to add additional error codes required by the kernel. We did this by placing the TI-POSIX include path at the front of the list. In the TI-POSIX provided errno.h header file, we include the one provided by the compiler, then add the missing error codes. However, the include trick above does not work correctly with C++. Thus, the include chain was broken.

Switching to the new #include_next directive, allows us to add TI-POSIX support without breaking the include chain.

Let us know if this works for you, or if you run into more issues.

Thanks,
~Ramsey

Ramsey,

Thank you for your comprehensive reply. It helped me very much.

As fact, I don't need POSIX, I even didn't know that it is enabled :)

So, in my case I just removed posix from include path.