Adds several resolutions around endianess

[Sazerac4]

I dug a little deeper into how endianess works and I propose some modifications, tell me what you think.

Endianess detection at compile time

Concerning endianess, this can be detected in two ways

• C23 standard
• Compilers features ( GCC, clang, ...)
  • check it : echo | gcc -dM -E - | grep ENDIAN or echo | clang -dM -E - | grep ENDIAN

We can see example to check endianess here:

• project "littlefs" embedded filesystem (line 170)
• example 1

If not detected, throw an error to force the user to set it. The user will therefore be able to control the endianess depending on the unsupported compiler or standard he use.

Use build-in "swap" function when available

I added a way to detect the header byteswap.h with __has_include. It is maybe not used by all compilers, it is worth it ?
TriceReverse16 and TriceReverse32 can use the appropiate build-in when available and use C implementation if not found. More implementation can be done.
The user can stil defined custom TRICE_HTOTS, TRICE_HTOTL and TRICE_TTOHS if no option at all

Notes:

I removed macros swap option. When using "static inline" functions, the compiler will do the same job as a macros. I do some tests on godbolt. Of course, optimisation level change the behavior but user can set it and use other compiler option to force inlining if needed with TRICE_INLINE.

When searching to support endianess, i found this information that give some compilers names used for embedded systems. Supported compilers and tools:

• Clang ( Clang is considered to be a production quality C )
• GNU Compiler Collection (GCC): Open-source and widely used for various architectures.
• ARM Compiler: Specifically designed for ARM architecture.
• IAR Embedded Workbench: Offers optimization features and real-time debugging.
• Keil MDK: Integrated development environment for ARM-based microcontrollers.
• TI Code Composer Studio: Integrated environment for Texas Instruments' microcontrollers.
• Microchip XC Compiler: Used for PIC microcontrollers.
• Green Hills Software Compiler: Known for high-performance embedded systems.

I didn't found if all of them are supported "BYTE_ORDER" variants but it can be a good to check if possible and add the support if it is possible. Otherwise the user need to defined what is needed.

[rokath]

Good work!