Ricardo Cadime helped us work out another check for the ## preprocessor

#ifdef CINIT

#undef CINIT

#endif

#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus)

/*

 * Figure out if we can use the ## operator, which is supported by ISO/ANSI C

 * and C++. Some compilers support it without setting __STDC__ or __cplusplus

 * so we need to carefully check for them too. We don't use configure-checks

 * for these since we want these headers to remain generic and working for all

 * platforms.

 */

#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) || \

  defined(__HP_aCC)

#define CINIT(name,type,number) CURLOPT_ ## name = CURLOPTTYPE_ ## type + number

#else

/* The macro "##" is ISO C, we assume pre-ISO C doesn't support it. */