Csanyi Pal wrote:
I shall use methods you adviced to me for OS X using:
#ifdef __APPLE__
// get a list of the directories the program might be in
// NSSearchPathForDirectoriesInDomains()
// append your program name to each directory in turn
// [NSString-stringByAppendingPathComponent:]
// check each to see if the program is there
// [NSFileManager-isExecutableFileAtPath:]
#endif /* __APPLE__ */
Please Csanyi (and everybody else) *NEVER* use #ifdef __APPLE__ to
check whether you are using Apple's Cocoa implementation. The feature
test macro __APPLE__ just tells you that you are compiling on an Apple
machine (and in fact OS X, it was not defined in Classic Mac OS).
However, it does not mean that the GNUstep extensions are not
available; you could either be compiling with the GNUstep extensions
(the apple-apple-apple configuration of GNUstep) or with a full
GNUstep installation (gnu-gnu-gnu configuration) on OS X.
If you do not explicitly import the GNUstep extensions (in which case
you can assume presence of the extensions of course), a better way of
checking their presence is
#ifdef __GNUSTEP_BASE_VERSION__
or
#ifdef __GNUSTEP_GUI_VERSION__
depending on whether it is a Foundation or AppKit class extension.
Wolfgang
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