Add two BSD-specific preprocessor macros to get additional prototypes…

…. Thanks to Netocrat.

darcs-hash:20060810203756-ac50b-21259e610fc738c6ad990d88b0af74d56d6a38f8.gz

configure.ac

@@ -208,6 +208,7 @@ if test $target_cpu = powerpc; then
    AC_DEFINE([TPUTS_KLUDGE],[1],[Evil kludge to get Power based machines to work])
 fi
 
+# Solaris-specific flags go here
 AC_MSG_CHECKING([if we are under Solaris])
 case $target_os in
 	 solaris*) 
@@ -220,6 +221,20 @@ case $target_os in
 esac
 
 
+# BSD-specific flags go here
+AC_MSG_CHECKING([if we are under BSD])
+case $target_os in
+	 *bsd*) 
+		AC_DEFINE( __BSD_VISIBLE, 1, [Macro to enable additional prototypes under BSD])
+		AC_DEFINE( _NETBSD_SOURCE, 1, [Macro to enable additional prototypes under BSD])
+		AC_MSG_RESULT(yes)
+		;;
+	*)
+		AC_MSG_RESULT(no)
+		;;
+esac
+
+
 # Set up PREFIX and related preprocessor symbols. Fish needs to know
 # where it will be installed. One of the reasons for this is so that
 # it can make sure the fish installation directory is in the path