Re: configure can not determin 'HAVE_LIMITS'
Ralf Corsepius [EMAIL PROTECTED] writes: To check for C++-headers you normally have to tell the configure script to switch languages/compilers. Example: # This uses the c-compiler AC_CHECK_HEADERS([limits.h]) # This uses the c++-compiler AC_LANG_PUSH([C++]) AC_CHECK_HEADERS([limits]) AC_LANG_POP Ralf thanks! it now okay!
Re: configure can not determin 'HAVE_LIMITS'
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
Re: configure can not determin 'HAVE_LIMITS'
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? -- steven woody (id: narke) Can two friends sleep together and still love each other in the morning? - When Harry Met Sally... (1989)
Re: configure can not determin 'HAVE_LIMITS'
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]) 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. It's hard to guess what actually goes wrong without having seen your code. Ralf
Re: configure can not determin 'HAVE_LIMITS'
Ralf Corsepius [EMAIL PROTECTED] writes: 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]) 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. Note that limits is a C++ header. By default, configure scripts don't use the C++ compiler when checking for headers. Andreas. -- Andreas Schwab, SuSE Labs, [EMAIL PROTECTED] SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 And now for something completely different.
Re: configure can not determin 'HAVE_LIMITS'
Andreas Schwab [EMAIL PROTECTED] writes: Ralf Corsepius [EMAIL PROTECTED] writes: 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]) 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. Note that limits is a C++ header. By default, configure scripts don't use the C++ compiler when checking for headers. so ... what?
Re: configure can not determin 'HAVE_LIMITS'
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.
Re: configure can not determin 'HAVE_LIMITS'
On Thu, 2005-10-27 at 08:28 +0800, Steven Woody wrote: Andreas Schwab [EMAIL PROTECTED] writes: Ralf Corsepius [EMAIL PROTECTED] writes: 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]) 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. Note that limits is a C++ header. By default, configure scripts don't use the C++ compiler when checking for headers. I knew - sorry for not having mentioned this ;) so ... what? A look into the config.log your configure script produces when running, would have told you (and us). If it's really the standard c++-header limits, you want to test for, I guess you might be using the c-compiler (which fails to compile limits), instead of the c++-compiler. To test for the c++-header limits, something along these lines should work: .. AC_PROG_CXX .. AC_LANG_PUSH([C++]) AC_CHECK_HEADERS([limits]) AC_LANG_POP .. Ralf
Re: configure can not determin 'HAVE_LIMITS'
On Thu, 2005-10-27 at 08:29 +0800, Steven Woody wrote: 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? AC_CHECK_HEADER by default uses the c-compiler. To check for C++-headers you normally have to tell the configure script to switch languages/compilers. Example: # This uses the c-compiler AC_CHECK_HEADERS([limits.h]) # This uses the c++-compiler AC_LANG_PUSH([C++]) AC_CHECK_HEADERS([limits]) AC_LANG_POP Ralf
configure can not determin 'HAVE_LIMITS'
i am using autoconf/automake in my currenty project. the project also use a third-party library which comes with a header file which i should include in my own sources. but in the header file, there is something like below: #ifdef HAVE_LIMITS #include limits #else #include machine/limits.h #endif so, my code including the header will never pass compile becase HAVE_LIMITS was not set by the ./configure, hence the header will ask the machine/limits.h which however does not exist on my system. does anyone know what's the cause and gets a solution? -- steven woody (id: narke) Can two friends sleep together and still love each other in the morning? - When Harry Met Sally... (1989)
