Multi-source

C

Standard way

• Linking extern variables in C

MyLib.c:

int Variable;

MyLib.h:

extern int Variable;

main.c:

#include "MyLib.h"
int main(void)
{
   Variable = 10;
   printf("%d\n", Variable);
   return 0;
}

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• Organizing Code Files in C and C++
• Style and Program Organization
• C tutorial-Organization
• winmerge

Simple way (proposed by Th.P.)

• Place c code inside files with names like spi_cpp.h

• #include spi_cpp.h inside the (main).cpp
• .h files are not compiled as individual files
• Compiler 'sees' a single source file
• Compilers today are fast, so usually no problem with compile time