Actually, scratch that suggestion. Maybe something like:
#ifdef MSG_MAXIOVLEN
#define ENET_BUFFER_MAXIMUM MSG_MAXIOVLEN
#endif
If MSG_MAXIOVLEN is not defined, then ENET_BUFFER_MAXIMUM needs to be left
undefined. In theory this should handle that, presuming the platform
only defines
MSG_MAXIOVLEN via a preprocessor macro - since I don't think any
platform really
does otherwise. This can be put somewhere in enet/unix.h
Lee
Lee Salzman wrote:
You can try just doing: #define ENET_BUFFER_MAXIMUM MSG_MAXIOVLEN
Lee
Andrew Fenn wrote:
Thanks, this was really helpful. I am now just stuck on this function..
AC_EGREP_HEADER(MSG_MAXIOVLEN, socket.h,
AC_DEFINE(ENET_BUFFER_MAXIMUM, [MSG_MAXIOVLEN]))
I need something to search through an include file "socket.h", find
MSG_MAXIOVLEN and return true or false.
I've been searching but I couldn't find anything.
Regards,
Andrew
On Wed, Oct 15, 2008 at 2:41 PM, Christian Ehrlicher
<[EMAIL PROTECTED]> wrote:
Von: "Eric Noulard"
2008/10/15 Andrew Fenn
Does cmake have replacement functions for the following?
AC_CHECK_MEMBER(struct msghdr.msg_flags,
[AC_DEFINE(HAS_MSGHDR_FLAGS)], , [#include <sys/socket.h>])
CHECK_FUNCTION_EXISTS(socklen_t HAS_SOCKLEN_T)
AC_CHECK_TYPE(socklen_t, [AC_DEFINE(HAS_SOCKLEN_T)], ,
#include <sys/types.h>
#include <sys/socket.h>
)
AC_EGREP_HEADER(MSG_MAXIOVLEN, /usr/include/sys/socket.h,
AC_DEFINE(ENET_BUFFER_MAXIMUM, [MSG_MAXIOVLEN]))
AC_EGREP_HEADER(MSG_MAXIOVLEN, socket.h,
AC_DEFINE(ENET_BUFFER_MAXIMUM, [MSG_MAXIOVLEN]))
May be you can look at:
http://www.cmake.org/Wiki/CMake:How_To_Write_Platform_Checks
CHECK_INCLUDE_FILES
CHECK_FUNCTION_EXISTS
CHECK_SYMBOL_EXISTS
CHECK_LIBRARY_EXISTS
I did not find equivalent of
AC_CHECK_MEMBER
but may be it exists and I don't know it.
KDE is using an own Macro for this:
http://websvn.kde.org/trunk/KDE/kdelibs/cmake/modules/CheckStructMember.cmake
Christian
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