CODECOMPOSER: CCS predefined variables

moshe jacobson18

Expert 2210 points

Part Number: CODECOMPOSER
Other Parts Discussed in Thread: CC1310

Tool/software:

This may be a stupid question, but.....

i'm using CCS v12.8.1 with TICLANG & sdk8.3 for CC1312

the one project (rfPacketTx_CC1312R1_LAUNCHXL_tirtos7_ticlang) i downloaded from resource compiler has the following

#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_ALIGN(rxDataEntryBuffer, 4)
static uint8_t
rxDataEntryBuffer[RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES,PAYLOAD_LENGTH,NUM_APPENDED_BYTES)];
#elif defined(__GNUC__)
static uint8_t rxDataEntryBuffer[RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES,PAYLOAD_LENGTH,NUM_APPENDED_BYTES)] __attribute__((aligned(4)));
#else
#error This compiler is not supported
#endif //defined(__TI_COMPILER_VERSION__)

As it transpires, it appears that __GNUC__ is defined.

My question is:
"Where is __GNUC__ defined???"

thanks in advance

5 months ago

0 Arthur R☑️ 5 months ago

TI__Mastermind 25030 points

Hi Moshe,

This is not a stupid question. I agree it can be confusing.

The __TI_COMPILER_VERSION__ corresponds to our old CCS compiled (as used on the CC1310), and here, if you use rfPacketRx, you can see that it is indeed defined:

The __GNUC__ defined corresponds to both our new llvm based ticlang compiler, and gcc, which is why you see it defined in your project.

Regards,

Arthur

0 moshe jacobson18 5 months ago in reply to Arthur R☑️

Expert 2210 points

Hi Arthur

Yes, i was aware of that part..but....where is the actual #define for __GNUC__ located?

0 Arthur R☑️ 5 months ago in reply to moshe jacobson18

TI__Mastermind 25030 points

Hi Moshe,

It just seems to be defined in the compiler itself: 2.6.3. Generic Compiler Pre-Defined Macro Symbols — TI Arm Clang Compiler Tools User's Guide

Regards,

Arthur

+1 moshe jacobson18 5 months ago in reply to Arthur R☑️

Expert 2210 points

Hi Arthur

Thanks for that link,,so it explains it "at compile time".

But the puzzling thing is that when working in CCS on the source file, __GNUC__ is recognised as defined which implies that there is a #define somewhere in the project properties or in ccs somewhere.

[EDIT]
i found __GNUC__ in project properties | C/C++ | |Preprocessor Include Paths, Macros etc. | Entries ...then in settings entries i clicked on CCS Built-in Compiler Settings (after having 1st clicked 'show built-in values')....so it would appear that that is the probable location!!!

Puzzle solved?

regards

moshe

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CODECOMPOSER: CCS predefined variables