Ralf Corsepius <[EMAIL PROTECTED]> writes: > On Wed, 2005-10-26 at 21:52 +0800, Steven Woody wrote: >> Stepan Kasal <[EMAIL PROTECTED]> writes: >> >> > Hello, >> > >> > On Tue, Oct 25, 2005 at 10:23:55PM +0800, Steven Woody wrote: >> >> #ifdef HAVE_LIMITS >> > >> > add line >> > >> > AC_CHECK_HEADERS([limits]) >> > >> > to configure.ac (or configure.in). >> > >> > HTH, >> > Stepan Kasal >> >> thanks. but still got problem. if i say, AC_CHECK_HEADERS([limits]) as you >> pointed, the the configure script will complain and the HAVE_LIMITS veriable >> would't be set because my system (Linux) only get limits.h instead of >> 'limits'. >> >> so to make 'configure' happy, i changed to AC_CHECK_HEADERS([limits.h]), this >> time, 'configure' feels happy and HAVE_LIMITS_H is set properly. but the >> third-party headers used in my project requires a HAVE_LIMITS that is still >> not >> set. >> >> my current solution is add the below line into 'config.h.in': >> >> #define HAVE_LIMITS 1 >> >> but i think this is not a decent way. any thinking? > > You seem to be confused and are outsmarting yourself ;) > > limits.h is a POSIX header. On linux it is supplied by GCC. > > So if you want to check for "limits", you should use > AC_CHECK_HEADERS([limits]) >
but could you explain why AC_CHECK_HEADERS([limits]) failed but AC_CHECK_HEADERS([limits.h]) success? > If this fails, something else is broken and you will have to > investigate. It could be a bug inside of "limits", it could be problem > elsewhere inside of your configure script, or could be a problem with > your include paths. >
