| dnl -- The following is base of curl's acinclude.m4 -- |
| dnl Check for socklen_t: historically on BSD it is an int, and in |
| dnl POSIX 1g it is a type of its own, but some platforms use different |
| dnl types for the argument to getsockopt, getpeername, etc. So we |
| dnl have to test to find something that will work. |
| AC_DEFUN([AX_TYPE_SOCKLEN_T], [ |
| AC_CHECK_TYPE( |
| [socklen_t], |
| , |
| [ |
| AS_VAR_PUSHDEF([VAR],[ax_cv_socklen_t_equiv])dnl |
| AC_CACHE_CHECK( |
| [for socklen_t equivalent], |
| [VAR], |
| [ |
| #AS_CASE is not supported on <autoconf-2.60 |
| case "${host}" in |
| *-mingw*) VAR=int ;; |
| *) |
| # Systems have either "struct sockaddr *" or |
| # "void *" as the second argument to getpeername |
| for arg2 in "struct sockaddr" void; do |
| for t in int size_t unsigned long "unsigned long"; do |
| AC_COMPILE_IFELSE( |
| [AC_LANG_PROGRAM( |
| [[ |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| int getpeername (int, $arg2 *, $t *); |
| ]], |
| [[ |
| $t len; |
| getpeername(0,0,&len); |
| ]] |
| )], |
| [VAR="$t"; break] |
| ) |
| done |
| test -n "$VAR" && break |
| done |
| ;; |
| esac |
| ] |
| AS_VAR_IF( |
| [VAR], |
| [], |
| [AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])], |
| [AC_DEFINE_UNQUOTED( |
| [socklen_t], |
| [$VAR], |
| [type to use in place of socklen_t if not defined] |
| )] |
| ) |
| ) |
| ], |
| [[ |
| #include <sys/types.h> |
| #ifdef _WIN32 |
| #include <ws2tcpip.h> |
| #else |
| #include <sys/socket.h> |
| #endif |
| ]] |
| ) |
| ]) |