toppy | Overlay library | Frontend Framework library
kandi X-RAY | toppy Summary
kandi X-RAY | toppy Summary
Overlay library for Angular 7+
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QUESTION
G'day! While I have previously found solutions to my programming issues here by Googling, this is the first time I've asked a question, since I couldn't find an answer by Googling.
I'm a professional electronics engineer, but not a software engineer. My (limited) software skills are self-taught, and I particularly struggle with C programming, from lack of understanding. So please treat me as an absolute novice, and explain in simple terms what I've done wrong, and suggestions on how to fix it , if possible.
I'm compiling/linking a program for an old DOS-based PC using the Phar Lap compiler/linker suite. Several of my C modules have #include "codes.c", and I've included an extract from that header file below. Just the relevant lines in sequential order, with intermediate irrelevant lines omitted. (Incidentally, the value 'LAST_IRTYPE' is defined earlier in the file, with a value of 9.) ...ANSWER
Answered 2021-Apr-17 at 11:39My understanding of using #ifndef CODES_H / #define CODES_H is that the compiler will only parse/compile the file's contents the first time it's encountered, so any variables defined within will only be defined once, but this doesn't seem to be happening.
It is happening, but it's once per translation unit (C module), which are compiled independently from each other. You can correct this by moving the definitions of cusarIRtimes
, cucarBitsPerCode
and bIRbitsHigh
into one of your C modules, and in the include file replacing them by declarations:
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