Backport trunk's r45715: Define MAXPATHLEN to be at least PATH_MAX, if that's defined. Python uses MAXPATHLEN-sized buffers for various output-buffers (like to realpath()), and that's correct on BSD platforms, but not Linux (which uses PATH_MAX, and does not define MAXPATHLEN.) Cursory googling suggests Linux is following a newer standard than BSD, but in cases like this, who knows. Using the greater of PATH_MAX and 1024 as a fallback for MAXPATHLEN seems to be the most portable solution.

/* Return the compiler identification, if possible. */

#include "Python.h"

#ifndef COMPILER

#ifdef __GNUC__
#define COMPILER "\n[GCC " __VERSION__ "]"
#endif

#endif /* !COMPILER */

#ifndef COMPILER

#ifdef __cplusplus
#define COMPILER "[C++]"
#else
#define COMPILER "[C]"
#endif

#endif /* !COMPILER */

const char *
Py_GetCompiler(void)
{
	return COMPILER;
}