Hmm. Interesting problem. The "realpath(3C)" documentation specifically references PATH_MAX:
> NAME > realpath - return the canonicalized absolute pathname > > SYNOPSIS > #include <limits.h> > #include <stdlib.h> > char *realpath(const char *path, char *resolved_path); > [...] > ERRORS > [...] > ENAMETOOLONG > A component of a path name exceeded NAME_MAX characters, or an > entire path name exceeded PATH_MAX characters. and the code in question is only compiled in if "realpath" is known to be in the library. And, yes, I know about the extended GNU doc: > BUGS > Never use this function. It is broken by design since it is impossible > to determine a suitable size for the output buffer. According to POSIX > a buffer of size PATH_MAX suffices, but PATH_MAX need not be a defined > constant, and may have to be obtained using pathconf(). And asking > pathconf() does not really help, since on the one hand POSIX warns that > the result of pathconf() may be huge and unsuitable for mallocing mem- > ory. And on the other hand pathconf() may return -1 to signify that > PATH_MAX is not bounded. but since no viable alternative is suggested, it leaves one in a difficult spot. Especially since virtually all "normal" paths are under a few hundred bytes and PATH_MAX is typically 1024. If someone wants to promote an "realnpath" call, I'd be a happy camper :). Anyway, I'll replace "PATH_MAX" with "MAXPATHLEN" and now define it thus: #ifndef MAXPATHLEN # ifdef PATH_MAX # define MAXPATHLEN PATH_MAX # else # define MAXPATHLEN 4096 # endif #else # if defined(PATH_MAX) && (PATH_MAX > MAXPATHLEN) # undef MAXPATHLEN # define MAXPATHLEN PATH_MAX # endif #endif Ugly stuff.... Thank you. Regards, Bruce On Monday 25 July 2005 09:29 am, Michael Banck wrote: > Package: autogen > Severity: important > Version: 5.7-4 > Tags: patch > > Sorry, I should have checked this before filing the last bug. Due to a > PATH_MAX occurance in autoopts/load.c, autogen FTBFS: > > gcc -DHAVE_CONFIG_H -I. -I. -I.. -I.. -I../autoopts -O2 -MT libopts.lo > -MD -MP -MF .deps/libopts.Tpo -c libopts.c -fPIC -DPIC -o > .libs/libopts.o > In file included from libopts.c:15: > load.c: In function 'optionMakePath': > load.c:225: error: 'PATH_MAX' undeclared (first use in this function) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
