Re: [HACKERS] Off-topic: autoconf guru

On 29-Jul-99 Patrick van Kleef wrote:
> Hi Dmitry,
>
> Autoconf can do this out of the box. With the macros AC_LANG_C and
> AC_LANG_CPLUSPLUS you can switch between C and C++ compiler mode. Here
> is a small example based on the snippet you provided:

Thank you very match !!!!
It is exactly what I need for !!!

>
>
> AC_PREREQ(2.12)
> AC_INIT(configure.in)
>
> #
> # Check which C and C++ compiler to use
> #
> AC_PROG_CC
> AC_PROG_CXX
>
> #
> # The following checks are done with the C compiler
> #
> AC_LANG_C
>
> AC_CHECK_FUNC(accept)
>
>
> #
> # Now switch over to the C++ compiler for the next test
> #
> AC_LANG_CPLUSPLUS
>
> AC_MSG_CHECKING(socket size type)
> AC_TRY_COMPILE([#include <stdlib.h>
> #include <sys/types.h>
> #include <sys/socket.h>
> ],
> [int a = accept(1, (struct sockaddr *) 0, (int *) 0);],
> [AC_DEFINE(SOCKET_SIZE_TYPE, int) AC_MSG_RESULT(int)],
> [AC_DEFINE(SOCKET_SIZE_TYPE, size_t) AC_MSG_RESULT(size_t)])
>
> #
> # Switch back to C mode again
> #
> AC_LANG_C
>
> AC_OUTPUT()
>
>
> Best regards,
>
> Patrick
> --
> Patrick van Kleef
> pkleef(at)roady(dot)xs4all(dot)nl

---
Dmitry Samersoff, dms(at)wplus(dot)net, ICQ:3161705
http://devnull.wplus.net
* There will come soft rains ...